（三十二）c#Winform自定义控件-表格
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前提
入行已经7,8年了，一直想做一套漂亮点的自定义控件，于是就有了本系列文章。
GitHub：https://github.com/kwwwvagaa/NetWinformControl
码云：https://gitee.com/kwwwvagaa/net_winform_custom_control.git
如果觉得写的还行，请点个 star 支持一下吧
欢迎前来交流探讨： 企鹅群568015492 idkey=6e08741ef16fe53bf0314c1c9e336c4f626047943a8b76bac062361bab6b4f8d">
目录
https://www.cnblogs.com/bfyx/p/11364884.html
准备工作
表格控件将拆分为2部分，1：行元素控件，2：列表控件
为了具有更好的扩展性，更加的open，使用接口对行元素进行约束，当行样式或功能不满足你的需求的时候，可以自定义一个行元素，实现接口控件，然后将类型指定给列表控件即可
表格控件用到了分页控件，如果你还没有对分页控件进行了解，请移步查看
开始
定义一些辅助东西
public class DataGridViewCellEntity
{
public string Title { get; set; }
public int Width { get; set; }
public System.Windows.Forms.SizeType WidthType { get; set; } }
public class DataGridViewEventArgs : EventArgs
{
public Control CellControl { get; set; }
public int CellIndex { get; set; }
public int RowIndex { get; set; } }
[Serializable]
[ComVisible(true)]
public delegate void DataGridViewEventHandler(object sender, DataGridViewEventArgs e);
public class DataGridViewColumnEntity
{
public string HeadText { get; set; }
public int Width { get; set; }
public System.Windows.Forms.SizeType WidthType { get; set; }
public string DataField { get; set; }
public Func<object, string> Format { get; set; }
}
定义行接口
public interface IDataGridViewRow
{
/// <summary>
/// CheckBox选中事件
/// </summary>
event DataGridViewEventHandler CheckBoxChangeEvent;
/// <summary>
/// 点击单元格事件
/// </summary>
event DataGridViewEventHandler CellClick;
/// <summary>
/// 数据源改变事件
/// </summary>
event DataGridViewEventHandler SourceChanged;
/// <summary>
/// 列参数，用于创建列数和宽度
/// </summary>
List<DataGridViewColumnEntity> Columns { get; set; }
bool IsShowCheckBox { get; set; }
/// <summary>
/// 是否选中
/// </summary>
bool IsChecked { get; set; } /// <summary>
/// 数据源
/// </summary>
object DataSource { get; set; }
/// <summary>
/// 添加单元格元素，仅做添加控件操作，不做数据绑定，数据绑定使用BindingCells
/// </summary>
void ReloadCells();
/// <summary>
/// 绑定数据到Cell
/// </summary>
/// <param name="intIndex">cell下标</param>
/// <returns>返回true则表示已处理过，否则将进行默认绑定（通常只针对有Text值的控件）</returns>
void BindingCellData();
/// <summary>
/// 设置选中状态，通常为设置颜色即可
/// </summary>
/// <param name="blnSelected">是否选中</param>
void SetSelect(bool blnSelected);
}
创建行控件
添加一个用户控件，命名UCDataGridViewRow，实现接口IDataGridViewRow
属性
#region 属性
public event DataGridViewEventHandler CheckBoxChangeEvent; public event DataGridViewEventHandler CellClick; public event DataGridViewEventHandler SourceChanged; public List<DataGridViewColumnEntity> Columns
{
get;
set;
} public object DataSource
{
get;
set;
} public bool IsShowCheckBox
{
get;
set;
}
private bool m_isChecked;
public bool IsChecked
{
get
{
return m_isChecked;
} set
{
if (m_isChecked != value)
{
m_isChecked = value;
(this.panCells.Controls.Find("check", false)[] as UCCheckBox).Checked = value;
}
}
} #endregion
实现接口
public void BindingCellData()
{
for (int i = ; i < Columns.Count; i++)
{
DataGridViewColumnEntity com = Columns[i];
var cs = this.panCells.Controls.Find("lbl_" + com.DataField, false);
if (cs != null && cs.Length > )
{
var pro = DataSource.GetType().GetProperty(com.DataField);
if (pro != null)
{
var value = pro.GetValue(DataSource, null);
if (com.Format != null)
{
cs[].Text = com.Format(value);
}
else
{
cs[].Text = value.ToStringExt();
}
}
}
}
} public void SetSelect(bool blnSelected)
{
if (blnSelected)
{
this.BackColor = Color.FromArgb(, , );
}
else
{
this.BackColor = Color.Transparent;
}
} public void ReloadCells()
{
try
{
ControlHelper.FreezeControl(this, true);
this.panCells.Controls.Clear();
this.panCells.ColumnStyles.Clear(); int intColumnsCount = Columns.Count();
if (Columns != null && intColumnsCount > )
{
if (IsShowCheckBox)
{
intColumnsCount++;
}
this.panCells.ColumnCount = intColumnsCount;
for (int i = ; i < intColumnsCount; i++)
{
Control c = null;
if (i == && IsShowCheckBox)
{
this.panCells.ColumnStyles.Add(new System.Windows.Forms.ColumnStyle(SizeType.Absolute, 30F)); UCCheckBox box = new UCCheckBox();
box.Name = "check";
box.TextValue = "";
box.Size = new Size(, );
box.Dock = DockStyle.Fill;
box.CheckedChangeEvent += (a, b) =>
{
IsChecked = box.Checked;
if (CheckBoxChangeEvent != null)
{
CheckBoxChangeEvent(a, new DataGridViewEventArgs()
{
CellControl = box,
CellIndex =
});
}
};
c = box;
}
else
{
var item = Columns[i - (IsShowCheckBox ? : )];
this.panCells.ColumnStyles.Add(new System.Windows.Forms.ColumnStyle(item.WidthType, item.Width)); Label lbl = new Label();
lbl.Tag = i - (IsShowCheckBox ? : );
lbl.Name = "lbl_" + item.DataField;
lbl.Font = new Font("微软雅黑", );
lbl.ForeColor = Color.Black;
lbl.AutoSize = false;
lbl.Dock = DockStyle.Fill;
lbl.TextAlign = ContentAlignment.MiddleCenter;
lbl.MouseDown += (a, b) =>
{
Item_MouseDown(a, b);
};
c = lbl;
}
this.panCells.Controls.Add(c, i, );
} }
}
finally
{
ControlHelper.FreezeControl(this, false);
}
}
节点选中事件
void Item_MouseDown(object sender, MouseEventArgs e)
{
if (CellClick != null)
{
CellClick(sender, new DataGridViewEventArgs()
{
CellControl = this,
CellIndex = (sender as Control).Tag.ToInt()
});
}
}
完整的代码
// 版权所有 黄正辉 交流群：568015492 QQ：623128629
// 文件名称：UCDataGridViewRow.cs
// 创建日期：2019-08-15 15:59:31
// 功能描述：DataGridView
// 项目地址：https://gitee.com/kwwwvagaa/net_winform_custom_control
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Drawing;
using System.Data;
using System.Linq;
using System.Text;
using System.Windows.Forms; namespace HZH_Controls.Controls
{
[ToolboxItem(false)]
public partial class UCDataGridViewRow : UserControl, IDataGridViewRow
{ #region 属性
public event DataGridViewEventHandler CheckBoxChangeEvent; public event DataGridViewEventHandler CellClick; public event DataGridViewEventHandler SourceChanged; public List<DataGridViewColumnEntity> Columns
{
get;
set;
} public object DataSource
{
get;
set;
} public bool IsShowCheckBox
{
get;
set;
}
private bool m_isChecked;
public bool IsChecked
{
get
{
return m_isChecked;
} set
{
if (m_isChecked != value)
{
m_isChecked = value;
(this.panCells.Controls.Find("check", false)[] as UCCheckBox).Checked = value;
}
}
} #endregion public UCDataGridViewRow()
{
InitializeComponent();
} public void BindingCellData()
{
for (int i = ; i < Columns.Count; i++)
{
DataGridViewColumnEntity com = Columns[i];
var cs = this.panCells.Controls.Find("lbl_" + com.DataField, false);
if (cs != null && cs.Length > )
{
var pro = DataSource.GetType().GetProperty(com.DataField);
if (pro != null)
{
var value = pro.GetValue(DataSource, null);
if (com.Format != null)
{
cs[].Text = com.Format(value);
}
else
{
cs[].Text = value.ToStringExt();
}
}
}
}
} void Item_MouseDown(object sender, MouseEventArgs e)
{
if (CellClick != null)
{
CellClick(sender, new DataGridViewEventArgs()
{
CellControl = this,
CellIndex = (sender as Control).Tag.ToInt()
});
}
} public void SetSelect(bool blnSelected)
{
if (blnSelected)
{
this.BackColor = Color.FromArgb(, , );
}
else
{
this.BackColor = Color.Transparent;
}
} public void ReloadCells()
{
try
{
ControlHelper.FreezeControl(this, true);
this.panCells.Controls.Clear();
this.panCells.ColumnStyles.Clear(); int intColumnsCount = Columns.Count();
if (Columns != null && intColumnsCount > )
{
if (IsShowCheckBox)
{
intColumnsCount++;
}
this.panCells.ColumnCount = intColumnsCount;
for (int i = ; i < intColumnsCount; i++)
{
Control c = null;
if (i == && IsShowCheckBox)
{
this.panCells.ColumnStyles.Add(new System.Windows.Forms.ColumnStyle(SizeType.Absolute, 30F)); UCCheckBox box = new UCCheckBox();
box.Name = "check";
box.TextValue = "";
box.Size = new Size(, );
box.Dock = DockStyle.Fill;
box.CheckedChangeEvent += (a, b) =>
{
IsChecked = box.Checked;
if (CheckBoxChangeEvent != null)
{
CheckBoxChangeEvent(a, new DataGridViewEventArgs()
{
CellControl = box,
CellIndex =
});
}
};
c = box;
}
else
{
var item = Columns[i - (IsShowCheckBox ? : )];
this.panCells.ColumnStyles.Add(new System.Windows.Forms.ColumnStyle(item.WidthType, item.Width)); Label lbl = new Label();
lbl.Tag = i - (IsShowCheckBox ? : );
lbl.Name = "lbl_" + item.DataField;
lbl.Font = new Font("微软雅黑", );
lbl.ForeColor = Color.Black;
lbl.AutoSize = false;
lbl.Dock = DockStyle.Fill;
lbl.TextAlign = ContentAlignment.MiddleCenter;
lbl.MouseDown += (a, b) =>
{
Item_MouseDown(a, b);
};
c = lbl;
}
this.panCells.Controls.Add(c, i, );
} }
}
finally
{
ControlHelper.FreezeControl(this, false);
}
} }
}
namespace HZH_Controls.Controls
{
partial class UCDataGridViewRow
{
/// <summary>
/// 必需的设计器变量。
/// </summary>
private System.ComponentModel.IContainer components = null; /// <summary>
/// 清理所有正在使用的资源。
/// </summary>
/// <param name="disposing">如果应释放托管资源，为 true；否则为 false。</param>
protected override void Dispose(bool disposing)
{
if (disposing && (components != null))
{
components.Dispose();
}
base.Dispose(disposing);
} #region 组件设计器生成的代码 /// <summary>
/// 设计器支持所需的方法 - 不要
/// 使用代码编辑器修改此方法的内容。
/// </summary>
private void InitializeComponent()
{
this.ucSplitLine_H1 = new HZH_Controls.Controls.UCSplitLine_H();
this.panCells = new System.Windows.Forms.TableLayoutPanel();
this.SuspendLayout();
//
// ucSplitLine_H1
//
this.ucSplitLine_H1.BackColor = System.Drawing.Color.FromArgb(((int)(((byte)()))), ((int)(((byte)()))), ((int)(((byte)()))));
this.ucSplitLine_H1.Dock = System.Windows.Forms.DockStyle.Bottom;
this.ucSplitLine_H1.Location = new System.Drawing.Point(, );
this.ucSplitLine_H1.Name = "ucSplitLine_H1";
this.ucSplitLine_H1.Size = new System.Drawing.Size(, );
this.ucSplitLine_H1.TabIndex = ;
this.ucSplitLine_H1.TabStop = false;
//
// panCells
//
this.panCells.ColumnCount = ;
this.panCells.ColumnStyles.Add(new System.Windows.Forms.ColumnStyle(System.Windows.Forms.SizeType.Percent, 100F));
this.panCells.ColumnStyles.Add(new System.Windows.Forms.ColumnStyle(System.Windows.Forms.SizeType.Absolute, 20F));
this.panCells.Dock = System.Windows.Forms.DockStyle.Fill;
this.panCells.Location = new System.Drawing.Point(, );
this.panCells.Name = "panCells";
this.panCells.RowCount = ;
this.panCells.RowStyles.Add(new System.Windows.Forms.RowStyle(System.Windows.Forms.SizeType.Percent, 100F));
this.panCells.RowStyles.Add(new System.Windows.Forms.RowStyle(System.Windows.Forms.SizeType.Absolute, 20F));
this.panCells.Size = new System.Drawing.Size(, );
this.panCells.TabIndex = ;
//
// UCDataGridViewItem
//
this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.None;
this.BackColor = System.Drawing.Color.White;
this.Controls.Add(this.panCells);
this.Controls.Add(this.ucSplitLine_H1);
this.Name = "UCDataGridViewItem";
this.Size = new System.Drawing.Size(, );
this.ResumeLayout(false); } #endregion private UCSplitLine_H ucSplitLine_H1;
private System.Windows.Forms.TableLayoutPanel panCells;
}
}
接下来就是列表控件了
添加一个用户控件，命名UCDataGridView
属性
#region 属性
private Font m_headFont = new Font("微软雅黑", 12F);
/// <summary>
/// 标题字体
/// </summary>
[Description("标题字体"), Category("自定义")]
public Font HeadFont
{
get { return m_headFont; }
set { m_headFont = value; }
}
private Color m_headTextColor = Color.Black;
/// <summary>
/// 标题字体颜色
/// </summary>
[Description("标题文字颜色"), Category("自定义")]
public Color HeadTextColor
{
get { return m_headTextColor; }
set { m_headTextColor = value; }
} private bool m_isShowHead = true;
/// <summary>
/// 是否显示标题
/// </summary>
[Description("是否显示标题"), Category("自定义")]
public bool IsShowHead
{
get { return m_isShowHead; }
set
{
m_isShowHead = value;
panHead.Visible = value;
if (m_page != null)
{
ResetShowCount();
m_page.PageSize = m_showCount;
}
}
}
private int m_headHeight = ;
/// <summary>
/// 标题高度
/// </summary>
[Description("标题高度"), Category("自定义")]
public int HeadHeight
{
get { return m_headHeight; }
set
{
m_headHeight = value;
panHead.Height = value;
}
} private bool m_isShowCheckBox = false;
/// <summary>
/// 是否显示复选框
/// </summary>
[Description("是否显示选择框"), Category("自定义")]
public bool IsShowCheckBox
{
get { return m_isShowCheckBox; }
set
{
if (value != m_isShowCheckBox)
{
m_isShowCheckBox = value;
LoadColumns();
}
}
} private int m_rowHeight = ;
/// <summary>
/// 行高
/// </summary>
[Description("数据行高"), Category("自定义")]
public int RowHeight
{
get { return m_rowHeight; }
set { m_rowHeight = value; }
} private int m_showCount = ;
/// <summary>
///
/// </summary>
[Description("可显示个数"), Category("自定义")]
public int ShowCount
{
get { return m_showCount; }
private set
{
m_showCount = value;
if (m_page != null)
{
m_page.PageSize = value;
}
}
} private List<DataGridViewColumnEntity> m_columns;
/// <summary>
/// 列
/// </summary>
[Description("列"), Category("自定义")]
public List<DataGridViewColumnEntity> Columns
{
get { return m_columns; }
set
{
m_columns = value;
LoadColumns();
}
} private object m_dataSource;
/// <summary>
/// 数据源,支持列表或table，如果使用翻页控件，请使用翻页控件的DataSource
/// </summary>
[Description("数据源,支持列表或table，如果使用翻页控件，请使用翻页控件的DataSource"), Category("自定义")]
public object DataSource
{
get { return m_dataSource; }
set
{
if (value == null)
return;
if (!(m_dataSource is DataTable) && (!typeof(IList).IsAssignableFrom(value.GetType())))
{
throw new Exception("数据源不是有效的数据类型，请使用Datatable或列表");
} m_dataSource = value;
ReloadSource();
}
} public List<IDataGridViewRow> Rows { get; private set; } private Type m_rowType = typeof(UCDataGridViewRow);
/// <summary>
/// 行元素类型，默认UCDataGridViewItem
/// </summary>
[Description("行控件类型，默认UCDataGridViewRow，如果不满足请自定义行控件实现接口IDataGridViewRow"), Category("自定义")]
public Type RowType
{
get { return m_rowType; }
set
{
if (value == null)
return;
if (!typeof(IDataGridViewRow).IsAssignableFrom(value) || !value.IsSubclassOf(typeof(Control)))
throw new Exception("行控件没有实现IDataGridViewRow接口");
m_rowType = value;
}
}
IDataGridViewRow m_selectRow = null;
/// <summary>
/// 选中的节点
/// </summary>
[Description("选中行"), Category("自定义")]
public IDataGridViewRow SelectRow
{
get { return m_selectRow; }
private set { m_selectRow = value; }
} /// <summary>
/// 选中的行，如果显示CheckBox，则以CheckBox选中为准
/// </summary>
[Description("选中的行，如果显示CheckBox，则以CheckBox选中为准"), Category("自定义")]
public List<IDataGridViewRow> SelectRows
{
get
{
if (m_isShowCheckBox)
{
return Rows.FindAll(p => p.IsChecked);
}
else
return new List<IDataGridViewRow>() { m_selectRow };
}
} private UCPagerControlBase m_page = null;
/// <summary>
/// 翻页控件
/// </summary>
[Description("翻页控件，如果UCPagerControl不满足你的需求，请自定义翻页控件并继承UCPagerControlBase"), Category("自定义")]
public UCPagerControlBase Page
{
get { return m_page; }
set
{
m_page = value;
if (value != null)
{
if (!typeof(IPageControl).IsAssignableFrom(value.GetType()) || !value.GetType().IsSubclassOf(typeof(UCPagerControlBase)))
throw new Exception("翻页控件没有继承UCPagerControlBase");
panPage.Visible = value != null;
m_page.ShowSourceChanged += page_ShowSourceChanged;
m_page.Dock = DockStyle.Fill;
this.panPage.Controls.Clear();
this.panPage.Controls.Add(m_page);
ResetShowCount();
m_page.PageSize = ShowCount;
this.DataSource = m_page.GetCurrentSource();
}
else
{
m_page = null;
}
}
} void page_ShowSourceChanged(object currentSource)
{
this.DataSource = currentSource;
} #region 事件
[Description("选中标题选择框事件"), Category("自定义")]
public EventHandler HeadCheckBoxChangeEvent;
[Description("标题点击事件"), Category("自定义")]
public EventHandler HeadColumnClickEvent;
[Description("项点击事件"), Category("自定义")]
public event DataGridViewEventHandler ItemClick;
[Description("数据源改变事件"), Category("自定义")]
public event DataGridViewEventHandler SourceChanged;
#endregion
#endregion
一些私有的方法
#region 私有方法
#region 加载column
/// <summary>
/// 功能描述:加载column
/// 作 者:HZH
/// 创建日期:2019-08-08 17:51:50
/// 任务编号:POS
/// </summary>
private void LoadColumns()
{
try
{
if (DesignMode)
{ return; } ControlHelper.FreezeControl(this.panHead, true);
this.panColumns.Controls.Clear();
this.panColumns.ColumnStyles.Clear(); if (m_columns != null && m_columns.Count() > )
{
int intColumnsCount = m_columns.Count();
if (m_isShowCheckBox)
{
intColumnsCount++;
}
this.panColumns.ColumnCount = intColumnsCount;
for (int i = ; i < intColumnsCount; i++)
{
Control c = null;
if (i == && m_isShowCheckBox)
{
this.panColumns.ColumnStyles.Add(new System.Windows.Forms.ColumnStyle(SizeType.Absolute, 30F)); UCCheckBox box = new UCCheckBox();
box.TextValue = "";
box.Size = new Size(, );
box.CheckedChangeEvent += (a, b) =>
{
Rows.ForEach(p => p.IsChecked = box.Checked);
if (HeadCheckBoxChangeEvent != null)
{
HeadCheckBoxChangeEvent(a, b);
}
};
c = box;
}
else
{
var item = m_columns[i - (m_isShowCheckBox ? : )];
this.panColumns.ColumnStyles.Add(new System.Windows.Forms.ColumnStyle(item.WidthType, item.Width));
Label lbl = new Label();
lbl.Name = "dgvColumns_" + i;
lbl.Text = item.HeadText;
lbl.Font = m_headFont;
lbl.ForeColor = m_headTextColor;
lbl.TextAlign = ContentAlignment.MiddleCenter;
lbl.AutoSize = false;
lbl.Dock = DockStyle.Fill;
lbl.MouseDown += (a, b) =>
{
if (HeadColumnClickEvent != null)
{
HeadColumnClickEvent(a, b);
}
};
c = lbl;
}
this.panColumns.Controls.Add(c, i, );
} }
}
finally
{
ControlHelper.FreezeControl(this.panHead, false);
}
}
#endregion /// <summary>
/// 功能描述:获取显示个数
/// 作 者:HZH
/// 创建日期:2019-03-05 10:02:58
/// 任务编号:POS
/// </summary>
/// <returns>返回值</returns>
private void ResetShowCount()
{
if (DesignMode)
{ return; }
ShowCount = this.panRow.Height / (m_rowHeight);
int intCha = this.panRow.Height % (m_rowHeight);
m_rowHeight += intCha / ShowCount;
}
#endregion
几个事件
#region 事件
void RowSourceChanged(object sender, DataGridViewEventArgs e)
{
if (SourceChanged != null)
SourceChanged(sender, e);
}
private void SetSelectRow(Control item, DataGridViewEventArgs e)
{
try
{
ControlHelper.FreezeControl(this, true);
if (item == null)
return;
if (item.Visible == false)
return;
this.FindForm().ActiveControl = this;
this.FindForm().ActiveControl = item;
if (m_selectRow != null)
{
if (m_selectRow == item)
return;
m_selectRow.SetSelect(false);
}
m_selectRow = item as IDataGridViewRow;
m_selectRow.SetSelect(true);
if (ItemClick != null)
{
ItemClick(item, e);
}
if (this.panRow.Controls.Count > )
{
if (item.Location.Y < )
{
this.panRow.AutoScrollPosition = new Point(, Math.Abs(this.panRow.Controls[this.panRow.Controls.Count - ].Location.Y) + item.Location.Y);
}
else if (item.Location.Y + m_rowHeight > this.panRow.Height)
{
this.panRow.AutoScrollPosition = new Point(, Math.Abs(this.panRow.AutoScrollPosition.Y) + item.Location.Y - this.panRow.Height + m_rowHeight);
}
}
}
finally
{
ControlHelper.FreezeControl(this, false);
}
}
private void UCDataGridView_Resize(object sender, EventArgs e)
{
ResetShowCount();
ReloadSource();
}
#endregion
对外公开的函数
#region 公共函数
/// <summary>
/// 刷新数据
/// </summary>
public void ReloadSource()
{
if (DesignMode)
{ return; }
try
{
if (m_columns == null || m_columns.Count <= )
return; ControlHelper.FreezeControl(this.panRow, true);
this.panRow.Controls.Clear();
Rows = new List<IDataGridViewRow>();
if (m_dataSource != null)
{
int intIndex = ;
Control lastItem = null; int intSourceCount = ;
if (m_dataSource is DataTable)
{
intSourceCount = (m_dataSource as DataTable).Rows.Count;
}
else if (typeof(IList).IsAssignableFrom(m_dataSource.GetType()))
{
intSourceCount = (m_dataSource as IList).Count;
} foreach (Control item in this.panRow.Controls)
{ if (intIndex >= intSourceCount)
{
item.Visible = false;
}
else
{
var row = (item as IDataGridViewRow);
row.IsShowCheckBox = m_isShowCheckBox;
if (m_dataSource is DataTable)
{
row.DataSource = (m_dataSource as DataTable).Rows[intIndex];
}
else
{
row.DataSource = (m_dataSource as IList)[intIndex];
}
row.BindingCellData();
item.Height = m_rowHeight;
item.Visible = true;
item.BringToFront();
if (lastItem == null)
lastItem = item;
Rows.Add(row);
}
intIndex++;
} if (intIndex < intSourceCount)
{
for (int i = intIndex; i < intSourceCount; i++)
{
IDataGridViewRow row = (IDataGridViewRow)Activator.CreateInstance(m_rowType);
if (m_dataSource is DataTable)
{
row.DataSource = (m_dataSource as DataTable).Rows[i];
}
else
{
row.DataSource = (m_dataSource as IList)[i];
}
row.Columns = m_columns;
List<Control> lstCells = new List<Control>();
row.IsShowCheckBox = m_isShowCheckBox;
row.ReloadCells();
row.BindingCellData(); Control rowControl = (row as Control);
rowControl.Height = m_rowHeight;
this.panRow.Controls.Add(rowControl);
rowControl.Dock = DockStyle.Top;
row.CellClick += (a, b) => { SetSelectRow(rowControl, b); };
row.CheckBoxChangeEvent += (a, b) => { SetSelectRow(rowControl, b); };
row.SourceChanged += RowSourceChanged;
rowControl.BringToFront();
Rows.Add(row); if (lastItem == null)
lastItem = rowControl;
}
}
if (lastItem != null && intSourceCount == m_showCount)
{
lastItem.Height = this.panRow.Height - (m_showCount - ) * m_rowHeight;
}
}
}
finally
{
ControlHelper.FreezeControl(this.panRow, false);
}
} /// <summary>
/// 快捷键
/// </summary>
/// <param name="msg"></param>
/// <param name="keyData"></param>
/// <returns></returns>
protected override bool ProcessCmdKey(ref Message msg, Keys keyData)
{
if (keyData == Keys.Up)
{
Previous();
}
else if (keyData == Keys.Down)
{
Next();
}
else if (keyData == Keys.Home)
{
First();
}
else if (keyData == Keys.End)
{
End();
}
return base.ProcessCmdKey(ref msg, keyData);
}
/// <summary>
/// 选中第一个
/// </summary>
public void First()
{
if (Rows == null || Rows.Count <= )
return;
Control c = null;
c = (Rows[] as Control);
SetSelectRow(c, new DataGridViewEventArgs() { RowIndex = });
}
/// <summary>
/// 选中上一个
/// </summary>
public void Previous()
{
if (Rows == null || Rows.Count <= )
return;
Control c = null; int index = Rows.IndexOf(m_selectRow);
if (index - >= )
{
c = (Rows[index - ] as Control);
SetSelectRow(c, new DataGridViewEventArgs() { RowIndex = index - });
}
}
/// <summary>
/// 选中下一个
/// </summary>
public void Next()
{
if (Rows == null || Rows.Count <= )
return;
Control c = null; int index = Rows.IndexOf(m_selectRow);
if (index + < Rows.Count)
{
c = (Rows[index + ] as Control);
SetSelectRow(c, new DataGridViewEventArgs() { RowIndex = index + });
}
}
/// <summary>
/// 选中最后一个
/// </summary>
public void End()
{
if (Rows == null || Rows.Count <= )
return;
Control c = null;
c = (Rows[Rows.Count - ] as Control);
SetSelectRow(c, new DataGridViewEventArgs() { RowIndex = Rows.Count - });
} #endregion
完整代码
// 版权所有 黄正辉 交流群：568015492 QQ：623128629
// 文件名称：UCDataGridView.cs
// 创建日期：2019-08-15 15:59:25
// 功能描述：DataGridView
// 项目地址：https://gitee.com/kwwwvagaa/net_winform_custom_control
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Drawing;
using System.Data;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Collections; namespace HZH_Controls.Controls
{
public partial class UCDataGridView : UserControl
{
#region 属性
private Font m_headFont = new Font("微软雅黑", 12F);
/// <summary>
/// 标题字体
/// </summary>
[Description("标题字体"), Category("自定义")]
public Font HeadFont
{
get { return m_headFont; }
set { m_headFont = value; }
}
private Color m_headTextColor = Color.Black;
/// <summary>
/// 标题字体颜色
/// </summary>
[Description("标题文字颜色"), Category("自定义")]
public Color HeadTextColor
{
get { return m_headTextColor; }
set { m_headTextColor = value; }
} private bool m_isShowHead = true;
/// <summary>
/// 是否显示标题
/// </summary>
[Description("是否显示标题"), Category("自定义")]
public bool IsShowHead
{
get { return m_isShowHead; }
set
{
m_isShowHead = value;
panHead.Visible = value;
if (m_page != null)
{
ResetShowCount();
m_page.PageSize = m_showCount;
}
}
}
private int m_headHeight = ;
/// <summary>
/// 标题高度
/// </summary>
[Description("标题高度"), Category("自定义")]
public int HeadHeight
{
get { return m_headHeight; }
set
{
m_headHeight = value;
panHead.Height = value;
}
} private bool m_isShowCheckBox = false;
/// <summary>
/// 是否显示复选框
/// </summary>
[Description("是否显示选择框"), Category("自定义")]
public bool IsShowCheckBox
{
get { return m_isShowCheckBox; }
set
{
if (value != m_isShowCheckBox)
{
m_isShowCheckBox = value;
LoadColumns();
}
}
} private int m_rowHeight = ;
/// <summary>
/// 行高
/// </summary>
[Description("数据行高"), Category("自定义")]
public int RowHeight
{
get { return m_rowHeight; }
set { m_rowHeight = value; }
} private int m_showCount = ;
/// <summary>
///
/// </summary>
[Description("可显示个数"), Category("自定义")]
public int ShowCount
{
get { return m_showCount; }
private set
{
m_showCount = value;
if (m_page != null)
{
m_page.PageSize = value;
}
}
} private List<DataGridViewColumnEntity> m_columns;
/// <summary>
/// 列
/// </summary>
[Description("列"), Category("自定义")]
public List<DataGridViewColumnEntity> Columns
{
get { return m_columns; }
set
{
m_columns = value;
LoadColumns();
}
} private object m_dataSource;
/// <summary>
/// 数据源,支持列表或table，如果使用翻页控件，请使用翻页控件的DataSource
/// </summary>
[Description("数据源,支持列表或table，如果使用翻页控件，请使用翻页控件的DataSource"), Category("自定义")]
public object DataSource
{
get { return m_dataSource; }
set
{
if (value == null)
return;
if (!(m_dataSource is DataTable) && (!typeof(IList).IsAssignableFrom(value.GetType())))
{
throw new Exception("数据源不是有效的数据类型，请使用Datatable或列表");
} m_dataSource = value;
ReloadSource();
}
} public List<IDataGridViewRow> Rows { get; private set; } private Type m_rowType = typeof(UCDataGridViewRow);
/// <summary>
/// 行元素类型，默认UCDataGridViewItem
/// </summary>
[Description("行控件类型，默认UCDataGridViewRow，如果不满足请自定义行控件实现接口IDataGridViewRow"), Category("自定义")]
public Type RowType
{
get { return m_rowType; }
set
{
if (value == null)
return;
if (!typeof(IDataGridViewRow).IsAssignableFrom(value) || !value.IsSubclassOf(typeof(Control)))
throw new Exception("行控件没有实现IDataGridViewRow接口");
m_rowType = value;
}
}
IDataGridViewRow m_selectRow = null;
/// <summary>
/// 选中的节点
/// </summary>
[Description("选中行"), Category("自定义")]
public IDataGridViewRow SelectRow
{
get { return m_selectRow; }
private set { m_selectRow = value; }
} /// <summary>
/// 选中的行，如果显示CheckBox，则以CheckBox选中为准
/// </summary>
[Description("选中的行，如果显示CheckBox，则以CheckBox选中为准"), Category("自定义")]
public List<IDataGridViewRow> SelectRows
{
get
{
if (m_isShowCheckBox)
{
return Rows.FindAll(p => p.IsChecked);
}
else
return new List<IDataGridViewRow>() { m_selectRow };
}
} private UCPagerControlBase m_page = null;
/// <summary>
/// 翻页控件
/// </summary>
[Description("翻页控件，如果UCPagerControl不满足你的需求，请自定义翻页控件并继承UCPagerControlBase"), Category("自定义")]
public UCPagerControlBase Page
{
get { return m_page; }
set
{
m_page = value;
if (value != null)
{
if (!typeof(IPageControl).IsAssignableFrom(value.GetType()) || !value.GetType().IsSubclassOf(typeof(UCPagerControlBase)))
throw new Exception("翻页控件没有继承UCPagerControlBase");
panPage.Visible = value != null;
m_page.ShowSourceChanged += page_ShowSourceChanged;
m_page.Dock = DockStyle.Fill;
this.panPage.Controls.Clear();
this.panPage.Controls.Add(m_page);
ResetShowCount();
m_page.PageSize = ShowCount;
this.DataSource = m_page.GetCurrentSource();
}
else
{
m_page = null;
}
}
} void page_ShowSourceChanged(object currentSource)
{
this.DataSource = currentSource;
} #region 事件
[Description("选中标题选择框事件"), Category("自定义")]
public EventHandler HeadCheckBoxChangeEvent;
[Description("标题点击事件"), Category("自定义")]
public EventHandler HeadColumnClickEvent;
[Description("项点击事件"), Category("自定义")]
public event DataGridViewEventHandler ItemClick;
[Description("数据源改变事件"), Category("自定义")]
public event DataGridViewEventHandler SourceChanged;
#endregion
#endregion public UCDataGridView()
{
InitializeComponent();
} #region 私有方法
#region 加载column
/// <summary>
/// 功能描述:加载column
/// 作 者:HZH
/// 创建日期:2019-08-08 17:51:50
/// 任务编号:POS
/// </summary>
private void LoadColumns()
{
try
{
if (DesignMode)
{ return; } ControlHelper.FreezeControl(this.panHead, true);
this.panColumns.Controls.Clear();
this.panColumns.ColumnStyles.Clear(); if (m_columns != null && m_columns.Count() > )
{
int intColumnsCount = m_columns.Count();
if (m_isShowCheckBox)
{
intColumnsCount++;
}
this.panColumns.ColumnCount = intColumnsCount;
for (int i = ; i < intColumnsCount; i++)
{
Control c = null;
if (i == && m_isShowCheckBox)
{
this.panColumns.ColumnStyles.Add(new System.Windows.Forms.ColumnStyle(SizeType.Absolute, 30F)); UCCheckBox box = new UCCheckBox();
box.TextValue = "";
box.Size = new Size(, );
box.CheckedChangeEvent += (a, b) =>
{
Rows.ForEach(p => p.IsChecked = box.Checked);
if (HeadCheckBoxChangeEvent != null)
{
HeadCheckBoxChangeEvent(a, b);
}
};
c = box;
}
else
{
var item = m_columns[i - (m_isShowCheckBox ? : )];
this.panColumns.ColumnStyles.Add(new System.Windows.Forms.ColumnStyle(item.WidthType, item.Width));
Label lbl = new Label();
lbl.Name = "dgvColumns_" + i;
lbl.Text = item.HeadText;
lbl.Font = m_headFont;
lbl.ForeColor = m_headTextColor;
lbl.TextAlign = ContentAlignment.MiddleCenter;
lbl.AutoSize = false;
lbl.Dock = DockStyle.Fill;
lbl.MouseDown += (a, b) =>
{
if (HeadColumnClickEvent != null)
{
HeadColumnClickEvent(a, b);
}
};
c = lbl;
}
this.panColumns.Controls.Add(c, i, );
} }
}
finally
{
ControlHelper.FreezeControl(this.panHead, false);
}
}
#endregion /// <summary>
/// 功能描述:获取显示个数
/// 作 者:HZH
/// 创建日期:2019-03-05 10:02:58
/// 任务编号:POS
/// </summary>
/// <returns>返回值</returns>
private void ResetShowCount()
{
if (DesignMode)
{ return; }
ShowCount = this.panRow.Height / (m_rowHeight);
int intCha = this.panRow.Height % (m_rowHeight);
m_rowHeight += intCha / ShowCount;
}
#endregion #region 公共函数
/// <summary>
/// 刷新数据
/// </summary>
public void ReloadSource()
{
if (DesignMode)
{ return; }
try
{
if (m_columns == null || m_columns.Count <= )
return; ControlHelper.FreezeControl(this.panRow, true);
this.panRow.Controls.Clear();
Rows = new List<IDataGridViewRow>();
if (m_dataSource != null)
{
int intIndex = ;
Control lastItem = null; int intSourceCount = ;
if (m_dataSource is DataTable)
{
intSourceCount = (m_dataSource as DataTable).Rows.Count;
}
else if (typeof(IList).IsAssignableFrom(m_dataSource.GetType()))
{
intSourceCount = (m_dataSource as IList).Count;
} foreach (Control item in this.panRow.Controls)
{ if (intIndex >= intSourceCount)
{
item.Visible = false;
}
else
{
var row = (item as IDataGridViewRow);
row.IsShowCheckBox = m_isShowCheckBox;
if (m_dataSource is DataTable)
{
row.DataSource = (m_dataSource as DataTable).Rows[intIndex];
}
else
{
row.DataSource = (m_dataSource as IList)[intIndex];
}
row.BindingCellData();
item.Height = m_rowHeight;
item.Visible = true;
item.BringToFront();
if (lastItem == null)
lastItem = item;
Rows.Add(row);
}
intIndex++;
} if (intIndex < intSourceCount)
{
for (int i = intIndex; i < intSourceCount; i++)
{
IDataGridViewRow row = (IDataGridViewRow)Activator.CreateInstance(m_rowType);
if (m_dataSource is DataTable)
{
row.DataSource = (m_dataSource as DataTable).Rows[i];
}
else
{
row.DataSource = (m_dataSource as IList)[i];
}
row.Columns = m_columns;
List<Control> lstCells = new List<Control>();
row.IsShowCheckBox = m_isShowCheckBox;
row.ReloadCells();
row.BindingCellData(); Control rowControl = (row as Control);
rowControl.Height = m_rowHeight;
this.panRow.Controls.Add(rowControl);
rowControl.Dock = DockStyle.Top;
row.CellClick += (a, b) => { SetSelectRow(rowControl, b); };
row.CheckBoxChangeEvent += (a, b) => { SetSelectRow(rowControl, b); };
row.SourceChanged += RowSourceChanged;
rowControl.BringToFront();
Rows.Add(row); if (lastItem == null)
lastItem = rowControl;
}
}
if (lastItem != null && intSourceCount == m_showCount)
{
lastItem.Height = this.panRow.Height - (m_showCount - ) * m_rowHeight;
}
}
}
finally
{
ControlHelper.FreezeControl(this.panRow, false);
}
} /// <summary>
/// 快捷键
/// </summary>
/// <param name="msg"></param>
/// <param name="keyData"></param>
/// <returns></returns>
protected override bool ProcessCmdKey(ref Message msg, Keys keyData)
{
if (keyData == Keys.Up)
{
Previous();
}
else if (keyData == Keys.Down)
{
Next();
}
else if (keyData == Keys.Home)
{
First();
}
else if (keyData == Keys.End)
{
End();
}
return base.ProcessCmdKey(ref msg, keyData);
}
/// <summary>
/// 选中第一个
/// </summary>
public void First()
{
if (Rows == null || Rows.Count <= )
return;
Control c = null;
c = (Rows[] as Control);
SetSelectRow(c, new DataGridViewEventArgs() { RowIndex = });
}
/// <summary>
/// 选中上一个
/// </summary>
public void Previous()
{
if (Rows == null || Rows.Count <= )
return;
Control c = null; int index = Rows.IndexOf(m_selectRow);
if (index - >= )
{
c = (Rows[index - ] as Control);
SetSelectRow(c, new DataGridViewEventArgs() { RowIndex = index - });
}
}
/// <summary>
/// 选中下一个
/// </summary>
public void Next()
{
if (Rows == null || Rows.Count <= )
return;
Control c = null; int index = Rows.IndexOf(m_selectRow);
if (index + < Rows.Count)
{
c = (Rows[index + ] as Control);
SetSelectRow(c, new DataGridViewEventArgs() { RowIndex = index + });
}
}
/// <summary>
/// 选中最后一个
/// </summary>
public void End()
{
if (Rows == null || Rows.Count <= )
return;
Control c = null;
c = (Rows[Rows.Count - ] as Control);
SetSelectRow(c, new DataGridViewEventArgs() { RowIndex = Rows.Count - });
} #endregion #region 事件
void RowSourceChanged(object sender, DataGridViewEventArgs e)
{
if (SourceChanged != null)
SourceChanged(sender, e);
}
private void SetSelectRow(Control item, DataGridViewEventArgs e)
{
try
{
ControlHelper.FreezeControl(this, true);
if (item == null)
return;
if (item.Visible == false)
return;
this.FindForm().ActiveControl = this;
this.FindForm().ActiveControl = item;
if (m_selectRow != null)
{
if (m_selectRow == item)
return;
m_selectRow.SetSelect(false);
}
m_selectRow = item as IDataGridViewRow;
m_selectRow.SetSelect(true);
if (ItemClick != null)
{
ItemClick(item, e);
}
if (this.panRow.Controls.Count > )
{
if (item.Location.Y < )
{
this.panRow.AutoScrollPosition = new Point(, Math.Abs(this.panRow.Controls[this.panRow.Controls.Count - ].Location.Y) + item.Location.Y);
}
else if (item.Location.Y + m_rowHeight > this.panRow.Height)
{
this.panRow.AutoScrollPosition = new Point(, Math.Abs(this.panRow.AutoScrollPosition.Y) + item.Location.Y - this.panRow.Height + m_rowHeight);
}
}
}
finally
{
ControlHelper.FreezeControl(this, false);
}
}
private void UCDataGridView_Resize(object sender, EventArgs e)
{
ResetShowCount();
ReloadSource();
}
#endregion
}
}
namespace HZH_Controls.Controls
{
partial class UCDataGridView
{
/// <summary>
/// 必需的设计器变量。
/// </summary>
private System.ComponentModel.IContainer components = null; /// <summary>
/// 清理所有正在使用的资源。
/// </summary>
/// <param name="disposing">如果应释放托管资源，为 true；否则为 false。</param>
protected override void Dispose(bool disposing)
{
if (disposing && (components != null))
{
components.Dispose();
}
base.Dispose(disposing);
} #region 组件设计器生成的代码 /// <summary>
/// 设计器支持所需的方法 - 不要
/// 使用代码编辑器修改此方法的内容。
/// </summary>
private void InitializeComponent()
{
this.panHead = new System.Windows.Forms.Panel();
this.panColumns = new System.Windows.Forms.TableLayoutPanel();
this.ucSplitLine_H1 = new HZH_Controls.Controls.UCSplitLine_H();
this.panRow = new System.Windows.Forms.Panel();
this.panPage = new System.Windows.Forms.Panel();
this.panHead.SuspendLayout();
this.SuspendLayout();
//
// panHead
//
this.panHead.Controls.Add(this.panColumns);
this.panHead.Controls.Add(this.ucSplitLine_H1);
this.panHead.Dock = System.Windows.Forms.DockStyle.Top;
this.panHead.Location = new System.Drawing.Point(, );
this.panHead.Name = "panHead";
this.panHead.Size = new System.Drawing.Size(, );
this.panHead.TabIndex = ;
//
// panColumns
//
this.panColumns.ColumnCount = ;
this.panColumns.ColumnStyles.Add(new System.Windows.Forms.ColumnStyle(System.Windows.Forms.SizeType.Percent, 100F));
this.panColumns.Dock = System.Windows.Forms.DockStyle.Fill;
this.panColumns.Location = new System.Drawing.Point(, );
this.panColumns.Name = "panColumns";
this.panColumns.RowCount = ;
this.panColumns.RowStyles.Add(new System.Windows.Forms.RowStyle(System.Windows.Forms.SizeType.Percent, 100F));
this.panColumns.RowStyles.Add(new System.Windows.Forms.RowStyle(System.Windows.Forms.SizeType.Absolute, 20F));
this.panColumns.Size = new System.Drawing.Size(, );
this.panColumns.TabIndex = ;
//
// ucSplitLine_H1
//
this.ucSplitLine_H1.BackColor = System.Drawing.Color.FromArgb(((int)(((byte)()))), ((int)(((byte)()))), ((int)(((byte)()))));
this.ucSplitLine_H1.Dock = System.Windows.Forms.DockStyle.Bottom;
this.ucSplitLine_H1.Location = new System.Drawing.Point(, );
this.ucSplitLine_H1.Name = "ucSplitLine_H1";
this.ucSplitLine_H1.Size = new System.Drawing.Size(, );
this.ucSplitLine_H1.TabIndex = ;
this.ucSplitLine_H1.TabStop = false;
//
// panRow
//
this.panRow.AutoScroll = true;
this.panRow.Dock = System.Windows.Forms.DockStyle.Fill;
this.panRow.Location = new System.Drawing.Point(, );
this.panRow.Name = "panRow";
this.panRow.Size = new System.Drawing.Size(, );
this.panRow.TabIndex = ;
//
// panPage
//
this.panPage.Dock = System.Windows.Forms.DockStyle.Bottom;
this.panPage.Location = new System.Drawing.Point(, );
this.panPage.Name = "panPage";
this.panPage.Size = new System.Drawing.Size(, );
this.panPage.TabIndex = ;
this.panPage.Visible = false;
//
// UCDataGridView
//
this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.None;
this.BackColor = System.Drawing.Color.White;
this.Controls.Add(this.panRow);
this.Controls.Add(this.panPage);
this.Controls.Add(this.panHead);
this.Name = "UCDataGridView";
this.Size = new System.Drawing.Size(, );
this.Resize += new System.EventHandler(this.UCDataGridView_Resize);
this.panHead.ResumeLayout(false);
this.ResumeLayout(false); } #endregion private System.Windows.Forms.Panel panHead;
private System.Windows.Forms.TableLayoutPanel panColumns;
private UCSplitLine_H ucSplitLine_H1;
private System.Windows.Forms.Panel panRow;
private System.Windows.Forms.Panel panPage; }
}
如果你仔细看，你会发现行我用了类型进行传入，当你需要更丰富的行内容的时候，可以自定义行控件，然后通过RowType属性传入
分页控件我使用了分页控件基类UCPagerControlBase，这样做的好处就是你同样可以扩展分页控件
用处及效果
调用示例
List<DataGridViewColumnEntity> lstCulumns = new List<DataGridViewColumnEntity>();
lstCulumns.Add(new DataGridViewColumnEntity() { DataField = "ID", HeadText = "编号", Width = , WidthType = SizeType.Absolute });
lstCulumns.Add(new DataGridViewColumnEntity() { DataField = "Name", HeadText = "姓名", Width = , WidthType = SizeType.Percent });
lstCulumns.Add(new DataGridViewColumnEntity() { DataField = "Age", HeadText = "年龄", Width = , WidthType = SizeType.Percent });
lstCulumns.Add(new DataGridViewColumnEntity() { DataField = "Birthday", HeadText = "生日", Width = , WidthType = SizeType.Percent, Format = (a) => { return ((DateTime)a).ToString("yyyy-MM-dd"); } });
lstCulumns.Add(new DataGridViewColumnEntity() { DataField = "Sex", HeadText = "性别", Width = , WidthType = SizeType.Percent, Format = (a) => { return ((int)a) == ? "女" : "男"; } });
this.ucDataGridView1.Columns = lstCulumns;
this.ucDataGridView1.IsShowCheckBox = true;
List<object> lstSource = new List<object>();
for (int i = ; i < ; i++)
{
TestModel model = new TestModel()
{
ID = i.ToString(),
Age = * i,
Name = "姓名——" + i,
Birthday = DateTime.Now.AddYears(-),
Sex = i %
};
lstSource.Add(model);
} var page = new UCPagerControl2();
page.DataSource = lstSource;
this.ucDataGridView1.Page = page;
this.ucDataGridView1.First();
如果使用分页控件，则将数据源指定给分页控件，否则直接指定给表格控件数据源
最后的话
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