如何获取datagridview.rows（）。列（）。样式。背面的backcolor在cellValidating中工作？
我有一个datagridview，其中我在输入时用绿色绘制绿色的细胞和白色。如果将错误捕获在单元格验证中，我需要将单元的颜色更改为红色。最后一部分IE在细胞验证中以红色绘画似乎不起作用。 这是可疑的代码：
Private Sub DataGridView4_CellValidating(sender As Object, e As System.Windows.Forms.DataGridViewCellValidatingEventArgs) Handles DataGridView4.CellValidating
' check if the quantity is valid
Dim Str_Input As String = CStr(e.FormattedValue)
Dim Str_ColumnName As String = DataGridView4.Item(e.ColumnIndex, e.RowIndex).OwningColumn.Name
If Str_ColumnName = "quantity" Then
If Not (IsNumeric(Str_Input)) Then
DataGridView4.Rows(e.RowIndex).Cells(e.ColumnIndex).Style.BackColor = Color.Red
DataGridView4.InvalidateCell(e.ColumnIndex, e.RowIndex)
e.Cancel = True
End If
End If
End Sub
I have a datagridview in which I paint in green the cell on entering and in white while endediting. I need to change the color of the cell to red if an error is trapped in cell validating. The last part i.e painting in red in cell validating seems not to work.
Here is the suspected code:
Private Sub DataGridView4_CellValidating(sender As Object, e As System.Windows.Forms.DataGridViewCellValidatingEventArgs) Handles DataGridView4.CellValidating
' check if the quantity is valid
Dim Str_Input As String = CStr(e.FormattedValue)
Dim Str_ColumnName As String = DataGridView4.Item(e.ColumnIndex, e.RowIndex).OwningColumn.Name
If Str_ColumnName = "quantity" Then
If Not (IsNumeric(Str_Input)) Then
DataGridView4.Rows(e.RowIndex).Cells(e.ColumnIndex).Style.BackColor = Color.Red
DataGridView4.InvalidateCell(e.ColumnIndex, e.RowIndex)
e.Cancel = True
End If
End If
End Sub
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