C#基本语法<三>_WindowsFrom
winform
在windows form开发过程中还是有很多坑需要注意，包括一些重要代码记不得，在这个文件中进行汇总更新。
命名规则
- M结尾表示model
- A结尾表示消息
- Object表示 ,底层接口
- Presenter表示，逻辑类
- Transaction表示，具体逻辑
- View表示界面接口
- Helper：表示静态函数
- Statements：表示字符串
- E表示enum
- ~BTN按钮
- 私有变量m_
- 获得Get
- 建立Build
- 生成Generate
- listbox 为 LB
一个项目体验
using System;
using System.Windows.Forms;
namespace AerationSystem
{
static class Program
{
/// <summary>
/// 应用程序的主入口点。
/// </summary>
[STAThread]
static void Main()
{
Application.EnableVisualStyles();
Application.SetCompatibleTextRenderingDefault(false);
GetAllFrom getform = new GetAllFrom();
getform.MakeLoginForm();
getform.login.ShowDialog();
if(getform.login.DialogResult==DialogResult.OK)
{
getform.MakeAllForm();
Application.Run(getform.currentMain);
//Application.Run(new Form1());
}
}
}
}
public class XMLHelper
{
/// <summary>
/// 读取多行同一标签属性
/// </summary>
/// <param name="filename">地址</param>
/// <param name="nodeflag">标签</param>
/// <param name="strflag">属性</param>
/// <returns>多行同一标签属性</returns>
public static string[] ReadMultipleTagOneAttribute(string filename,string nodeflag, string strflag)
{
try
{
XmlDocument xl = new XmlDocument();
xl.Load(filename);
XmlNodeList xnl = xl.GetElementsByTagName("appSettings")[0].ChildNodes;
List<string> vs = new List<string>();
foreach (XmlNode cn in xnl)
{
if (cn.Name.Equals(nodeflag))
{
vs.Add(cn.Attributes.GetNamedItem(strflag).Value);
}
}
return vs.ToArray();
}
catch (Exception ex)
{
Console.WriteLine(ex.StackTrace + ex.Message);
}
return null;
}
/// <summary>
/// 读取同一标签多个属性,如果有多个同标签则返回null
/// </summary>
/// <param name="filename">地址</param>
/// <param name="nodeflag">标签</param>
/// <param name="strflag">多个属性</param>
/// <returns>多个属性值</returns>
public static string[] ReadMultipleAttributeOneTag(string filename, string nodeflag, string[] strflag)
{
try
{
XmlDocument xl = new XmlDocument();
xl.Load(filename);
XmlNodeList xnl = xl.GetElementsByTagName("appSettings")[0].ChildNodes;
List<string> vs = new List<string>();
int tagcount = 0;
foreach (XmlNode cn in xnl)
{
if (cn.Name.Equals(nodeflag))
{
foreach (string s in strflag)
{
vs.Add(cn.Attributes.GetNamedItem(s).Value);
}
tagcount++;
}
}
if (tagcount > 1)
{
throw new Exception("出现多个相同标签");
}
return vs.ToArray();
}
catch (Exception ex)
{
Console.WriteLine(ex.StackTrace + ex.Message);
}
return null;
}
}
public class SQLDatabaseHelper
{
/// <summary>
/// 返回多个表
/// </summary>
/// <param name="dbname">数据库URL</param>
/// <param name="sqlstr">执行语句</param>
/// <returns></returns>
public static DataSet QueryDs(String dbname, String sqlstr)
{
OleDbConnection Connection = new OleDbConnection(dbname);
try
{
Connection.Open();
OleDbDataAdapter oleDbAdapter = new OleDbDataAdapter(sqlstr, Connection);
DataSet ds = new DataSet();
oleDbAdapter.Fill(ds);
return ds;
}
catch (Exception ex)
{
Console.WriteLine("打开数据库连接异常:" + ex.Message + "\r\n");
}
finally
{
Connection.Close();
}
return null;
}
/// <summary>
/// 执行语句返会受影响函数
/// </summary>
/// <param name="dbname">数据库URL</param>
/// <param name="sqlstr">执行语句</param>
/// <returns></returns>
public static int Execute(String dbname, String sqlstr)
{
OleDbConnection Connection = new OleDbConnection(dbname);
try
{
Connection.Open();
OleDbCommand oleDbCommand = new OleDbCommand(sqlstr, Connection);
return oleDbCommand.ExecuteNonQuery();
}
catch (Exception ex)
{
Console.WriteLine(ex.Message);
}
finally
{
Connection.Close();
}
return 0;
}
/// <summary>
/// 执行多条语句
/// </summary>
/// <param name="dbname">数据库url</param>
/// <param name="sqlstrs">受影响的行数</param>
/// <returns></returns>
public static int ExecuteAll(string dbname, string[] sqlstrs)
{
int count = 0;
foreach (string s in sqlstrs)
{
count = count + Execute(dbname, s);
}
return count;
}
/// <summary>
/// 返回表
/// </summary>
/// <param name="dbname">数据库URL</param>
/// <param name="sqlstr">执行语句</param>
/// <returns>受影响行数</returns>
public static DataTable QueryDt(String dbname, String sqlstr)
{
OleDbConnection Connection = new OleDbConnection(dbname);
try
{
Connection.Open();
OleDbDataAdapter oleDbAdapter = new OleDbDataAdapter(sqlstr, Connection);
OleDbCommandBuilder oleDbBuilder = new OleDbCommandBuilder(oleDbAdapter);
DataSet ds = new DataSet();
oleDbAdapter.Fill(ds);
return ds.Tables[0];
}
catch (Exception ex)
{
Console.WriteLine(ex.Message);
}
finally
{
Connection.Close();
}
return null;
}
}
private UserM rowtoUserM(DataRow dr)
{
if (dr == null) return null;
UserM user = new UserM();
if (!DBNull.Value.Equals(dr["name"])) user.name = dr["name"].ToString();
if (!DBNull.Value.Equals(dr["password"])) user.password = dr["password"].ToString();
if (!DBNull.Value.Equals(dr["active"])) user.active = dr["active"].ToString();
if (!DBNull.Value.Equals(dr["caption"])) user.caption = dr["caption"].ToString();
if (!DBNull.Value.Equals(dr["pri"])) user.pri = dr["pri"].ToString();
return user;
}
private SQLDataBaseM strToSqlDatabase(string str)
{
string catalog, server, username, userpassword;
Match mt = Regex.Match(str, @"server=\w+\.\w+\.\w+\.\w+\,?(\w+)?");
if (!mt.Success)
{
return null;
}
server = mt.Value.Substring(7);
mt = Regex.Match(str, @"id=\w+");
if (!mt.Success)
{
return null;
}
username = mt.Value.Substring(3);
mt = Regex.Match(str, @"password=\w+@?\w+");
if (!mt.Success)
{
return null;
}
userpassword = mt.Value.Substring(9);
mt = Regex.Match(str, @"catalog=\w+");
if (!mt.Success)
{
return null;
}
catalog = mt.Value.Substring(8);
return new SQLDataBaseM(server, catalog, username, userpassword);
}
public class SQLStatements
{
/// <summary>
/// 通过pointcode获得point
/// </summary>
public static string GetPointByCodeStr = "select * from TB_MeasurePoint where MPointCode='{0}'";
public static string GetUserByNameAndPasswordStr = "SELECT * FROM TB_User where name='{0}' and password='{1}'";
public static string GetAllFactoryAreaStr = "select distinct BizType from TB_MeasurePoint where active = '启用'";
public static string GetAllpointTypesStr = "select distinct SignalType from TB_MeasurePoint where active = '启用'";
public static string GetAllEquipmentTypesStr = "select distinct scdtype from TB_MeasurePoint where active = '启用'";
/// <summary>
/// 获得钱100个point的值
/// </summary>
public static string GetTop100PintsByWhereStr = "select top 100 * from TB_MeasurePoint where {0} AND ParmValue > -9999 order by measuredt desc";
/// <summary>
/// 通过约束获得measurepoint
/// </summary>
public static string GetPintsByWhereStr = "select * from TB_MeasurePoint where {0} order by measuredt desc";
/// <summary>
/// 获得前100个数据
/// </summary>
public static string GetPartlyParasWhereStr = "select top 100 * from tb_mp_{0} where {1} AND ParmValue > -9999 order by measuredt desc";
/// <summary>
/// 查询数据获得翻页效果，第一个是code，第二个是（页数-1）*100，第三个是约束
/// </summary>
public static string GetParasWhereByPageStr = " select top 100 * from tb_mp_{0} where ItemID not in (select top {1} ItemID from tb_mp_{2} where {3} AND ParmValue > -9999 order by measuredt desc ) AND {4} AND ParmValue > -9999 order by measuredt desc ";
/// <summary>
/// 数量，最大值，最小值，平均值
/// </summary>
public static string GetCountMaxMinAvgParaStr = "SELECT COUNT(ParmValue), MAX(ParmValue),MIN(ParmValue),AVG(ParmValue) FROM TB_MP_{0} where {1} AND ParmValue > -9999";
/// <summary>
/// 将点位变成对应数据写到历史数据里
/// </summary>
public static string GetSpeciPointsByWhereStr = "select MPOINTID,MPOINTCODE,PARMNAME,ISNULL(ParmName, '未知') +'['+MPOINTCODE+']' as 测量点,alarmmax as 超标上限,alarmmin as 超标下限,forcemax as 纵轴上限,forcemin as 纵轴下限,spanrange as 量程,rate,SignalType,Unit,NumTail,biztype,scdtype,morder from TB_MeasurePoint where {0} AND ParmValue > -9999 order by measuredt desc";
/// <summary>
/// 获得point的第二个值
/// </summary>
public static string GetSecondValueByCodeStr = "select top 2 ParmValue from tb_mp_{0} where ParmValue > -9999 order by measuredt desc";
/// <summary>
/// 获得点的最新的数据时间
/// </summary>
public static string GetLastDateTimeByCodeStr = "select top 1 measuredt from tb_mp_{0} where ParmValue > -9999 order by measuredt desc";
public static string GetPointDataByCodeStr = "select * from tb_mp_{0} where {1} AND ParmValue > -9999 order by measuredt desc";
}
DateTime.Now.ToString("yyyy/MM/dd HH:mm:ss");
public void GenerateReportTable(SearchConstrainA sca)
{
if (sca != null)
{
string startpath = Application.StartupPath + "\\日报表\\";
if (!Directory.Exists(startpath))
{
Directory.CreateDirectory(startpath);
}
startpath = startpath + "" + sca.reporttime.ToString() + sca.PumpType.ToString()+".xls";
ExcelHelper.CopyExcel(startpath);
DataTable dt = database.GetDataFromSC(sca);
if (dt == null)
{
allFrom.form.ShowMessageBox(sca.reporttime + "没有数据");
return;
}
allFrom.form.ShowMessageBox("写入参数", ExcelHelper.FillExcel(dt, startpath, sca));
}
}
using System;
using System.Collections.Generic;
using System.Data;
using System.Linq;
using System.Runtime.InteropServices;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
namespace PunchReport
{
public class ExcelHelper
{
public static void CopyExcel(string targetpath)
{
Excel.Application xApp = new Excel.ApplicationClass();
xApp.WindowState = Excel.XlWindowState.xlMinimized;
xApp.DisplayAlerts = false;
xApp.Visible = false;
object MissingValue = Type.Missing;
Excel.Workbook xBook = xApp.Workbooks._Open(@"" + Application.StartupPath + "\\report.xls",
MissingValue, MissingValue, MissingValue, MissingValue
, MissingValue, MissingValue, MissingValue, MissingValue
, MissingValue, MissingValue, MissingValue, MissingValue);
xBook._SaveAs(@"" + targetpath, MissingValue, MissingValue, MissingValue, MissingValue, MissingValue, Excel.XlSaveAsAccessMode.xlNoChange, MissingValue, MissingValue, MissingValue, MissingValue);
xBook = null;
xApp.Quit();
Kill(xApp);
xApp = null;
}
public static bool FillExcel(DataTable dt, string targetpath,SearchConstrainA sca)
{
if (dt == null && dt.Rows.Count < 0) return false;
object MissingValue = Type.Missing;
Excel.Application xApp = new Excel.ApplicationClass();
Excel.Workbook xBook;
xApp.WindowState = Excel.XlWindowState.xlMinimized;
xApp.DisplayAlerts = false;
xApp.Visible = false;
try
{
xBook = xApp.Workbooks._Open(@"" + targetpath,
MissingValue, MissingValue, MissingValue, MissingValue
, MissingValue, MissingValue, MissingValue, MissingValue
, MissingValue, MissingValue, MissingValue, MissingValue);
Excel.Worksheet xSheet = (Excel.Worksheet)xBook.Sheets["统计表"];
Excel.Range tilterng = xSheet.get_Range("A1", MissingValue);
tilterng.Value2 = sca.PumpType.ToString() + "日报表";
Excel.Range tmprng = xSheet.get_Range("A2", MissingValue);
tmprng.Value2 = "报表日期: " + DateTime.Parse(sca.reporttime).ToString("yyyy年MM月dd日");
for (int j = 0; j < dt.Rows.Count; j++)
{
for (int i = 0; i < 4; i++)
{
tmprng = xSheet.get_Range(getColName("A", i) + (4 + j).ToString(), MissingValue);
bool a = true;
if (tmprng.HasFormula.Equals(a))
{
continue;
}
else
{
tmprng.Value2 = dt.Rows[j][i].ToString();
}
}
}
xBook.Save();
return true;
}
catch (Exception ex)
{
BackLogHelper.LogWrite(ex.StackTrace + ex.Message);
return false;
}
finally
{
xBook = null;
xApp.Quit();
Kill(xApp);
xApp = null;
}
}
private static string getColName(string strTemp, int inc)
{
int i = strTemp.Length;
char[] ca = new char[i];
ca = strTemp.ToCharArray();
int w = i - 1;
int AddResult = (int)ca[w];
AddResult += inc;
if (AddResult >= 91)//需要进一
{
ca[w] = (char)(AddResult - 91 + 65);
if (w > 0)
{
ca[w - 1] = (char)((int)ca[w - 1] + 1);
strTemp = ca[w - 1].ToString() + ca[w].ToString();
}
else
{
strTemp = "A" + ca[w].ToString();
}
}
else
{
strTemp = "";
ca[w] = (char)(AddResult);
while (w >= 0)
{
strTemp = ca[w].ToString() + strTemp;
w--;
}
}
return strTemp;
}
[DllImport("User32.dll", CharSet = CharSet.Auto)]
public static extern int GetWindowThreadProcessId(IntPtr hwnd, out int ID);
public static void Kill(Excel.Application xlapp)
{
try
{
IntPtr app = new IntPtr(xlapp.Hwnd); //得到这个句柄，具体作用是得到这块内存入口
int processid = 0;
GetWindowThreadProcessId(app, out processid); //得到本进程唯一标志k
System.Diagnostics.Process p = System.Diagnostics.Process.GetProcessById(processid);
p.Kill(); //关闭进程k
}
catch
{ }
}
}
}
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
namespace PunchReport
{
public class BackLogHelper
{
public static void LogWrite(String memo)
{
try
{
StreamWriter sr;
//String filename = DateTime.Now.ToShortDateString() + ".txt";
String filename = DateTime.Now.ToString("yyyy-MM-dd") + ".txt";
if (!Directory.Exists(Application.StartupPath + "\\logs\\log\\"))
{
Directory.CreateDirectory(Application.StartupPath + "\\logs\\log\\");
}
if (!File.Exists(Application.StartupPath + "\\logs\\log\\" + filename))
{
sr = File.CreateText(Application.StartupPath + "\\logs\\log\\" + filename);
sr.Close();
}
sr = File.AppendText(Application.StartupPath + "\\logs\\log\\" + filename);
sr.WriteLine(memo);
sr.Close();
}
catch (System.Exception ex)
{
Console.WriteLine("写入日志异常:" + ex);
}
}
}
}
<?xml version="1.0" encoding="utf-8" ?>
<configuration>
<startup>
<supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.6.1" />
</startup>
<appSettings>
<add key = "SQLName" value="EIP_PRD_JSXJ"/>
<add key = "SQLIP" value="127.0.0.1"/>
<add key = "UserID" value="sa"/>
<add key="SearchTable" value="KQview"/>
<add key="Remove" value="巡检A组,巡检B组"/>
</appSettings>
</configuration>
string sqlname = ConfigurationManager.AppSettings["SQLName"].ToString();
string sqlip = ConfigurationManager.AppSettings["SQLIP"].ToString();
string userid = ConfigurationManager.AppSettings["UserID"].ToString();
string userpassword = ConfigurationManager.AppSettings["UserPassword"].ToString();
string removesstr= ConfigurationManager.AppSettings["Remove"].ToString();
自定义控件
Screen.PrimaryScreen.WorkingArea.Width;获取桌面宽度，hight高度
this.size程序宽度
base.Invalidate(this.MenuRect)重绘矩形区域
this.FormBorderStyle = FormBorderStyle.None;无边框
this.SetStyle(
ControlStyles.AllPaintingInWmPaint |
ControlStyles.OptimizedDoubleBuffer |
ControlStyles.ResizeRedraw |
ControlStyles.Selectable |
ControlStyles.ContainerControl |
ControlStyles.UserPaint, true);
this.SetStyle(ControlStyles.Opaque, false);
this.UpdateStyles();
绘制控件样式Graphics g = e.Graphics;获取画布，如果是创建的使用完后要注销
FormWindowState.Maximized窗口状态
FormStartPosition.CenterParent窗体开启位置
继承form的重载类中WndProc有窗体循环，在该循环中提前捕获消息进行拦截。
设置背景图片 totalpic.ImageLocation = System.Windows.Forms.Application.StartupPath + "\img\" + comboBox2.Text.ToString() + ".jpg";
使得panel1不可见的时候panel2填满panel1的区域，让panel1的dock设置为top，panel2的dock设置为fill。
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