DataGridView仅数字单元格？

Question

我是winforms的新手.我正在尝试将DataGridView的两列设置为仅限数字.我不希望用户能够在单元格中键入任何内容,除非它在一列中为自然数,而在另一列中为数值(总是一个小数).我认为这很简单..但即使从stackoverflow和其他网站尝试了很多东西后我仍然无法实现这一点.

If DataGridView1.CurrentCell.ColumnIndex = 8 Then

    If Not Char.IsControl(e.KeyChar) AndAlso Not Char.IsDigit(e.KeyChar) AndAlso e.KeyChar <> "."c Then
        e.Handled = True
    End If

End If 

Answer 1

试试这个代码

 Private Sub DataGridView1_EditingControlShowing(ByVal sender As Object, ByVal e As System.Windows.Forms.DataGridViewEditingControlShowingEventArgs) Handles DataGridView1.EditingControlShowing

        If DataGridView1.CurrentCell.ColumnIndex = 2 Then

            AddHandler CType(e.Control, TextBox).KeyPress, AddressOf TextBox_keyPress

        ElseIf DataGridView1.CurrentCell.ColumnIndex = 1 Then

            AddHandler CType(e.Control, TextBox).KeyPress, AddressOf TextBox_keyPress1


        End If

    End Sub

    Private Sub TextBox_keyPress(ByVal sender As Object, ByVal e As KeyPressEventArgs)

        If Char.IsDigit(CChar(CStr(e.KeyChar))) = False Then e.Handled = True

    End Sub

    Private Sub TextBox_keyPress1(ByVal sender As Object, ByVal e As KeyPressEventArgs)

        If Not (Char.IsDigit(CChar(CStr(e.KeyChar))) Or e.KeyChar = ".") Then e.Handled = True

    End Sub

TextBox_keyPress仅限数字的事件

TextBox_keyPress1带小数值的数字的事件