最近在开发一个项目时,要求某一列只能够输入数字，其它的字符都不接受,Microsoft 没有提供这个功能，只能自己用代码实现，在网上找了一下，大多数都在输入完成后才验证的。这样不爽，我这个代码可以在输入进就屏蔽了非数字的字符。主要是在 EditingControlShowing事件中完成 。看代码: public  DataGridViewTextBoxEditingControl CellEdit = null; // 声明 一个 CellEdit   private void datagridyf_EditingControlShowing(object sender, DataGridViewEditingControlShowingEventArgs e)         {                     CellEdit = (DataGridViewTextBoxEditingControl)e.Control; // 赋值             CellEdit.SelectAll();             CellEdit.KeyPress += Cells_KeyPress; // 绑定到事件          }   // 自定义事件         private void Cells_KeyPress(object sender, KeyPressEventArgs e)         {             if (datagridyf.CurrentCellAddress.X == 2) // 判断当前列是不是要控制的列 我是控制的索引值为2的  列(即第三列)             {                 if ((Convert.ToInt32(e.KeyChar) < 48 || Convert.ToInt32(e.KeyChar) > 57) && Convert.ToInt32(e.KeyChar) != 46 && Convert.ToInt32(e.KeyChar) != 8 && Convert.ToInt32(e.KeyChar) != 13)                 {                     e.Handled = true;  // 输入非法就屏蔽                 }                 else                 {                     if ((Convert.ToInt32(e.KeyChar) == 46) && (txtjg.Text.IndexOf(".") != -1))                     {                         e.Handled = true;                     }                 }             }         } 下面是在输入完成后才验证的 这个主要是在 CellValidating事件中完成  private void datagridyf_CellValidating(object sender, DataGridViewCellValidatingEventArgs e)         {             if (e.ColumnIndex == datagridyf.Columns["Pric"].Index )             {                 datagridyf.Rows [e.RowIndex].ErrorText ="";                 int NewVal=0;                 if (!int.TryParse (e.FormattedValue.ToString (),out NewVal ) || NewVal <0)                 {                     e.Cancel=true ;                     datagridyf.Rows [e.RowIndex].ErrorText ="价格列只能输入数字";                     return ;                 }             }         }  下面是VB.NET版本（） Dim WithEvents CellEdit As New DataGridViewTextBoxEditingControl     Private Sub dgvXXX_EditingControlShowing(ByVal sender As Object, ByVal e As System.Windows.Forms.DataGridViewEditingControlShowingEventArgs) Handles dgvXXX.EditingControlShowing         CellEdit = CType(e.Control, DataGridViewTextBoxEditingControl)         CellEdit.SelectAll()         AddHandler CellEdit.KeyPress, AddressOf Cells_KeyPress            End Sub     ' Defect fixing for BEACQ00000345   - EdwardGuo     Private Sub Cells_KeyPress(ByVal sender As Object, ByVal e As KeyPressEventArgs)                If dgvXXX.CurrentCellAddress.X = 1 Then             If Asc(e.KeyChar) = 8 Then                 Exit Sub             End If             If Not (IsNumeric(e.KeyChar) AndAlso e.KeyChar <> ".") Then                 e.Handled = True             End If         End If     End Sub End Class  

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