高分求助，如何在windows form 的 datagrid 上实现双击事件？

namespace DataGridDoubleClick
{
using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data; public class Form1 : System.Windows.Forms.Form
{
private System.Windows.Forms.DataGrid dataGrid1;
private DataSet myDataSet;
DateTime gridMouseDownTime;
    private System.Windows.Forms.Label label1;

private System.ComponentModel.Container components = null; public Form1()
{
InitializeComponent();
gridMouseDownTime = DateTime.Now;
SetUp();
} private void SetUp()
{
// 用2个Table和1和Relation创建DataSet
MakeDataSet();
// 数据绑定
dataGrid1.SetDataBinding(myDataSet, "Customers"); //添加样式
AddCustomDataTableStyle();
} private void MakeDataSet()
{
// 创建DataSet.
myDataSet = new DataSet("myDataSet");

// 创建2个DataTables.
DataTable tCust = new DataTable("Customers");

// 创建两个列，并添加到第一个表
DataColumn cCustID = new DataColumn("custID");
DataColumn cCustName = new DataColumn("custName");
DataColumn cCurrent = new DataColumn("custCity");
tCust.Columns.Add(cCustID);
tCust.Columns.Add(cCustName);
tCust.Columns.Add(cCurrent); // 把tables添加到DataSet.
myDataSet.Tables.Add(tCust);


/* 计算tables.对每个客户，创建DataRow变量 */
DataRow newRow1;

// 添加记录到 Customers Table.
for(int i = 1; i < 4; i++)
{
newRow1 = tCust.NewRow();
newRow1["custID"] = (100*i).ToString();
tCust.Rows.Add(newRow1);
} tCust.Rows[0]["custName"] = "【孟宪会之精彩世界】";
tCust.Rows[1]["custName"] = "net_lover";
tCust.Rows[2]["custName"] = "http://xml.sz.luohuedu.net/";
tCust.Rows[0]["custCity"] = "北京";
tCust.Rows[1]["custCity"] = "上海";
tCust.Rows[2]["custCity"] = "河南";
} private void AddCustomDataTableStyle()
{
DataGridTableStyle ts1 = new DataGridTableStyle();
ts1.MappingName = "Customers";
// 设置属性
ts1.AlternatingBackColor = Color.LightGray; // 添加Textbox列样式，以便我们捕捉鼠标事件
DataGridTextBoxColumn TextCol = new DataGridTextBoxColumn();
TextCol.MappingName = "custID";
TextCol.HeaderText = "序号";
TextCol.Width = 100; //添加事件处理器
TextCol.TextBox.MouseDown += new MouseEventHandler(TextBoxMouseDownHandler);
TextCol.TextBox.DoubleClick += new EventHandler(TextBoxDoubleClickHandler);
ts1.GridColumnStyles.Add(TextCol); TextCol = new DataGridTextBoxColumn();
TextCol.MappingName = "custName";
TextCol.HeaderText = "姓名";
TextCol.Width = 100;
//添加事件处理器
TextCol.TextBox.MouseDown += new MouseEventHandler(TextBoxMouseDownHandler);
TextCol.TextBox.DoubleClick += new EventHandler(TextBoxDoubleClickHandler);
ts1.GridColumnStyles.Add(TextCol); TextCol = new DataGridTextBoxColumn();
TextCol.MappingName = "custCity";
TextCol.HeaderText = "地址";
TextCol.Width = 100;
//添加事件处理器
TextCol.TextBox.MouseDown += new MouseEventHandler(TextBoxMouseDownHandler);
TextCol.TextBox.DoubleClick += new EventHandler(TextBoxDoubleClickHandler);
ts1.GridColumnStyles.Add(TextCol);

dataGrid1.TableStyles.Add(ts1);

} protected override void Dispose( bool disposing )
{
if( disposing )
{
if (components != null)
{
components.Dispose();
}
}
base.Dispose( disposing );
} #region Windows Form Designer generated code
private void InitializeComponent()
{
      this.dataGrid1 = new System.Windows.Forms.DataGrid();
      this.label1 = new System.Windows.Forms.Label();
      ((System.ComponentModel.ISupportInitialize)(this.dataGrid1)).BeginInit();
      this.SuspendLayout();
      //
      // dataGrid1
      //
      this.dataGrid1.CaptionBackColor = System.Drawing.SystemColors.Info;
      this.dataGrid1.CaptionForeColor = System.Drawing.SystemColors.WindowText;
      this.dataGrid1.CaptionVisible = false;
      this.dataGrid1.DataMember = "";
      this.dataGrid1.HeaderForeColor = System.Drawing.SystemColors.ControlText;
      this.dataGrid1.Location = new System.Drawing.Point(11, 9);
      this.dataGrid1.Name = "dataGrid1";
      this.dataGrid1.Size = new System.Drawing.Size(368, 144);
      this.dataGrid1.TabIndex = 0;
      this.dataGrid1.MouseDown += new System.Windows.Forms.MouseEventHandler(this.dataGrid1_MouseDown);
      //
      // label1
      //
      this.label1.Location = new System.Drawing.Point(4, 166);
      this.label1.Name = "label1";
      this.label1.Size = new System.Drawing.Size(383, 23);
      this.label1.TabIndex = 1;
      this.label1.TextAlign = System.Drawing.ContentAlignment.MiddleCenter;
      this.label1.Click += new System.EventHandler(this.Form1_Click);
      //
      // Form1
      //
      this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
      this.ClientSize = new System.Drawing.Size(387, 201);
      this.Controls.AddRange(new System.Windows.Forms.Control[] {
                                                                  this.label1,
                                                                  this.dataGrid1});
      this.Name = "Form1";
      this.Text = "鼠标双击事件的例子";
      ((System.ComponentModel.ISupportInitialize)(this.dataGrid1)).EndInit();
      this.ResumeLayout(false);    }
#endregion [STAThread]
static void Main()
{
Application.Run(new Form1());
} private void TextBoxDoubleClickHandler(object sender, EventArgs e)
{
MessageBox.Show("双击事件发生。鼠标双击到的值："+((TextBox)sender).Text.ToString());
} private void TextBoxMouseDownHandler(object sender, MouseEventArgs e)
{
if(DateTime.Now < gridMouseDownTime.AddMilliseconds(SystemInformation.DoubleClickTime))
{
  MessageBox.Show("双击事件发生。鼠标双击到的值："+((TextBox)sender).Text.ToString());
}
label1.Text = "TextBox 鼠标按下了。  ";
} private void dataGrid1_MouseDown(object sender, System.Windows.Forms.MouseEventArgs e)
{
gridMouseDownTime = DateTime.Now;
label1.Text = "DataGrid1 鼠标按下了。  ";
}    private void Form1_Click(object sender, System.EventArgs e)
    {
      label1.Text="";
    }
    private void label1_Click(object sender, System.EventArgs e)
    {
      label1.Text="";
    }
}
}

theNull好强，居然这么多个颗星星（还五颜六色的)，第一次见...

http://dev.csdn.net/develop/article/44/44698.shtm

using System;
using System.ComponentModel;
using System.Data;
using System.Windows;
using System.Windows.Forms;
namespace DataGridDoubleClick
{
/// <summary>
/// cls_GridDblClick 的摘要说明。
/// </summary>
public class cls_GridDblClick
{
DataTable _Dt;
DataGrid _Dg;
public delegate void Grid_DoubleClick(object sender, MouseEventArgs e);
public event Grid_DoubleClick _DoubleClick;
public cls_GridDblClick()
{
} public cls_GridDblClick(DataGrid _SourceGrid, DataTable _SourceTable)
{
_Dt = _SourceTable;
_Dg = _SourceGrid;
} public DataTable _SourceTable
{
get
{
return _Dt;
}
set
{
_Dt = _SourceTable;
}
} public DataGrid _SourceGrid
{
get
{
return _Dg;
}
set
{
_Dg = _SourceGrid;
}
} public void Test()
{
DataGridTextBoxColumn _tb;// = new DataGridTextBoxColumn(); System.Windows.Forms.DataGridTableStyle _ts = new DataGridTableStyle(); _Dg.DataSource = _Dt; _ts.MappingName = _Dt.TableName; for(int i = 0; i <= _Dt.Columns.Count - 1; i++)
{
_tb = new DataGridTextBoxColumn(); _tb.TextBox.MouseDown +=new MouseEventHandler(TextBox_MouseDown); _tb.HeaderText = _Dt.Columns[i].ColumnName;

_tb.MappingName = _Dt.Columns[i].ColumnName; _ts.GridColumnStyles.Add(_tb);
} _Dg.TableStyles.Add(_ts);
} private void TextBox_MouseDown(object sender, MouseEventArgs e)
{
if(e.Button == MouseButtons.Left & e.Clicks == 2)
{
MouseEventArgs _e = new MouseEventArgs(MouseButtons.Left, 2, e.X ,e.Y,1) ; _DoubleClick(_Dg, _e);
}
}
}
}

实现这个东西,比较麻烦,以前我也找过这方面的资料,写了一大堆的代码才实现的:)private DateTime mousedowntime;
private void dataGrid1_MouseDown(object sender, System.Windows.Forms.MouseEventArgs e)
{
this.mousedowntime=System.DateTime.Now;
DataGrid myGrid = (DataGrid) sender;
System.Windows.Forms.DataGrid.HitTestInfo hti;
hti = myGrid.HitTest(e.X, e.Y); switch (hti.Type)
{
case System.Windows.Forms.DataGrid.HitTestType.None :
// message += "the background.";
break;
case System.Windows.Forms.DataGrid.HitTestType.Cell :
// message += "cell at row " + hti.Row + ", col " + hti.Column;
break;
case System.Windows.Forms.DataGrid.HitTestType.RowHeader: break;
} }

5.47 How can I make my last column wide enough to exactly occupy all the client area of the datagrid?     If you have added a TableStyle for your grid, then the code below should set the right column width to be the empty space from a button click. If you need to dynamically do this in response to the user sizing other columns, then there may be more work. But if you only need to do it at the end of your Form_Load, then this code might be sufficient. It assumes your datasource is a datatable. You can download a sample project (C#, VB).

private void button1_Click(object sender, System.EventArgs e)

{

     int numCols = ((DataTable)(dataGrid1.DataSource)).Columns.Count;

     //the fudge -4 is for the grid borders

     int targetWidth = dataGrid1.ClientSize.Width - SystemInformation.VerticalScrollBarWidth - 4;

     int runningWidthUsed = this.dataGrid1.TableStyles["customers"].RowHeaderWidth;



     for(int i = 0; i < numCols - 1; ++i)

          runningWidthUsed += this.dataGrid1.TableStyles["customers"].GridColumnStyles[i].Width;

     if(runningWidthUsed < targetWidth)

          this.dataGrid1.TableStyles["customers"].GridColumnStyles[numCols - 1].Width = targetWidth - runningWidthUsed;

}

调试易

高分求助，如何在windows form 的 datagrid 上实现双击事件？

解决方案 »