如已绑定过数据源: DataTable dt = (dataGridView1.DataSource as DataTable) 如未绑定过数据源: public DataTable GetDgvToTable(DataGridView dgv) { DataTable dt = new DataTable(); // 列强制转换 for (int count = 0; count < dgv.Columns.Count; count++) { DataColumn dc = new DataC…

public static DataTable ToDataTable(this DataGridView dataGridView, string tableName = null) { DataGridView dgv = dataGridView; DataTable table = new DataTable(tableName); ; iCol < dgv.Columns.Count; iCol++) { table.Columns.Add(dgv.Columns[iCol].Name…

1. 将DataTable 绑定到BindingSource 2. 将BindingSource绑定到DataGridView 3. DataGridView修改完要从Datatable取值时,同步过去时,BindingSource和DataGridView两个都要执行EndEdit() 例程: public partial class Form1 : Form { DataTable mTable = new DataTable(); BindingSource mbs = new Bindi…

DataGridView 属性 AllowUserToAddRows = false…

DataTable dt2 =  GetDgvToTable(Form_CY_ProjectRequirements_D);    MessageBox.Show( dt2.Rows.Count.ToString()); //// protected  DataTable GetDgvToTable(DataGridView dgv)        {            DataTable dt = new DataTable();            for (int count = 0…

如已绑定过数据源: DataTable dt = (dataGridView1.DataSource as DataTable) 如未绑定过数据源: public DataTable GetDgvToTable(DataGridView dgv) { DataTable dt = new DataTable(); // 列强制转换 for (int count = 0; count < dgv.Columns.Count; count++) { DataColumn dc = new DataC…

一  需求介绍 一般像枚举类型的数据,我们在数据库里存储着诸如(1.2.3.4-)或者("001"."002"."003"-)此类,但是界面上我们想要显示的是具体的文本内容,以便用户理解使用.所以在从数据库中加载出来的数据 DataTable 绑定到 DataGridView 上时,就需要其中一些枚举列采用下拉框,并绑定对应的枚举数据源. 二  具体实现 首先,如果 DataGridView 的 AutoGenerateColumns 为 tru…

我们都知道WinForm DataGridView控件支持数据绑定,使用方法很简单,只需将DataSource属性指定到相应的数据源即可,但需注意数据源必须支持IListSource类型,这里说的是支持,而不是实现,是因为他既可以是实现了IListSource的类型,也可以是实现了IList的类型,例如:List类型,DataTable类型等,这里就不一一列举了,今天我主要实现的功能如标题所描述的:实现WinForm DataGridView控件支持叠加数据绑定,或者说是附加数据功能,什么意思呢…

Summary: Disable sorting after clicking DataGridView columnheader,Prevent databound DataGridView from sorting while editing! Problem:I have a databound DataGridView in a WinForms which the user may have sorted by a column. The problem is this: after…

从DataGridView或DataTable导出Excel文件,为了按照数据类型设置单元格格式,导出Excel时速度都比较慢,一直找不到好的办法. 最后从外文网站上找到解决办法,使用ws.get_Range(excelRange, Type.Missing).Value2方法批量设置单元格的值.详细代码如下: public void DataToExcelFast(DataGridView dgv, string fName) { try { Excel.Application excel =…

using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Text; using System.Windows.Forms; using System.Collections; namespace TechnologyProject.项目管理.加计扣除.ERP导入 { public partia…

导出excel我用的是nuget 的NPOI,直接在项目中添加的,引用到项目中,下面是截图: 下面我把ExcelHelper贴出来 public static class ExcelHelper { public static void ExportToExcel(DataTable dt) { ExportToExcelData(dt); } public static DataTable ToDataTable(this DataGridView myDGV) { DataTable dt…

DataGridViewCheckBoxColumn dtCheck = new DataGridViewCheckBoxColumn(); dtCheck.DataPropertyName = "check"; dtCheck.HeaderText = ""; dataGridView1.Columns.Add(dtCheck); dataGridView1.DataSource = DataTable; 以上代码 是在DataGridView中添加复选框 pri…

一.DataGridView数据转成DataTable 1.已绑定过数据源:DataTable dt = (dataGridView1.DataSource as DataTable) 2.未绑定过数据源:public DataTable GetDgvToTable(DataGridView dgv){DataTable dt = new DataTable(); // 列强制转换for (int count = 0; count < dgv.Columns.Count; count++){Da…

1.datagridview 日期列排序 private void Form1_Load(object sender, EventArgs e) { //方法1 dataGridView1.ColumnHeaderMouseClick += tempView_ColumnHeaderMouseClick; DataTable dt = Create(); dataGridView1.DataSource = dt; //方法2 dataGridView2.SortCompare += dataG…

使用方法 /* DataTable dt= DBUtility.DB.FromSql(sql).ToDataTable(); DataGridViewAddSumRow sumRow = new DataGridViewAddSumRow(); sumRow.Xh_field = "xuhao"; sumRow.DgvName = this.dataGridView1; sumRow.dataTableName = dt; sumRow.begin(); */ using System…

DataGridViewTextBoxColumn dgv_IDY = new DataGridViewTextBoxColumn(); dgv_IDY.Visible = false; dgv_IDY.HeaderText = "IDY"; dgv_IDY.Name = "IDY"; DataGridViewTextBoxColumn dgv_IDT = new DataGridViewTextBoxColumn(); dgv_IDT.Visible = fals…

困境 网上有很多解决方法,可是很多读者照做并不生效.追究其原因,问题出现在许多博主没有搞清楚DataGridView绑定与当前触发事件的关系. 复现 private void Frm_Load(object sender, EventArgs e) { datagridview.AutoGenerateColumns = false; DataTable dataTable = new DataTable(); for (int i = 1; i <= 7; i++) { dataTable.C…

winform手动绑定数据后,点击列标题不能实现自动排序,苦苦寻找方法,发现下面的是可行的. //建立DataTable将当前dataGridView中的数据读进DataTable中 public DataTable dvtodt(DataGridView dv) { DataTable dt = new DataTable(); DataColumn dc; ; i < dv.Columns.Count; i++) { dc = new DataColumn(); dc.ColumnName…

/// <summary> /// Export DataSet into Excel /// </summary> /// <param name="sender"></param> /// <param name="e"></param> private void Form3_Load(object sender, EventArgs e) { //Create an Emplyee Dat…