检测Win Form Datagrid点击cell值的代码，from msdn。

protected void dataGrid1_MouseDown(object sender, MouseEventArgs e){ 
    // Use the HitTest method to get a HitTestInfo object. 
    System.Windows.Forms.DataGrid.HitTestInfo hi;    
    DataGrid grid = (DataGrid) sender; 
    hi=grid.HitTest(e.X, e.Y); 
    // Test if the clicked area was a cell. 
    if(hi.Type==DataGrid.HitTestType.Cell ) { 
       // If it's a cell, get the GridTable and CurrencyManager of the 
       // clicked table.          
       DataGridTableStyle dgt = dataGrid1.TableStyles[0];      
       CurrencyManager myCurrencyManager =  
       (CurrencyManager)this.BindingContext 
       [myDataSet.Tables[dataGrid1.DataMember]]; 
       // Get the Rectangle of the clicked cell. 
       Rectangle cellRect; 
       cellRect=grid.GetCellBounds(hi.Row, hi.Column); 
       // Get the clicked DataGridTextBoxColumn. 
       DataGridTextBoxColumn gridCol = 
       (DataGridTextBoxColumn) dgt.GridColumnStyles[hi.Column]; 
       // Insert code to edit the value. 
        
    } 
 }

 
想想MS也真够莫名其妙的了，本来一句话可以完的东西，非要搞得这么复杂。