如果用户单击DataGridView底部的空白行并将焦点从DataGridView移开,则现在单击的行处于指示对该行进行更改的状态.
是否可以告诉DataGridView取消标记该行是否被更改？
焦点离开DataGridView时是否可以重置此行？
我们使用以下事件处理程序来提醒用户,如果将Invoiced On留空：
Private Sub dataGridViewPayments_CellValidating(ByVal sender As Object,_
ByVal e As DataGridViewCellValidatingEventArgs) _
Handles DataGridViewPayments.CellValidating
Dim headerText As String = _
DataGridViewPayments.Columns(e.ColumnIndex).HeaderText
' Validate the Invoiced On cell and display the error if it's empty.
'-------------------------------------------------------------------
If (String.IsNullOrEmpty(e.FormattedValue.ToString()) And
headerText.Equals("Invoiced On")) Then
DataGridViewPayments.Rows(e.RowIndex).ErrorText = _
"Please enter an Inoiced On date."
e.Cancel = True
End If
End Sub
解决方法
你可以尝试这样的事情：
Private Sub dg_CellValidating(ByVal sender As Object,ByVal e As DataGridViewCellValidatingEventArgs) Handles dg.CellValidating
Dim headerText As String = dg.Columns(e.ColumnIndex).HeaderText
'Try this --------------------------------------------------------------
Dim vClicked As Boolean = False
If (Control.MouseButtons And MouseButtons.Left) = MouseButtons.Left Then
vClicked = True
End If
'-----------------------------------------------------------------------
'Validate the Invoiced On cell and display the error if it's empty.
'And put vClicked here
If Not vClicked AndAlso (String.IsNullOrEmpty(e.FormattedValue.ToString()) And headerText.Equals("Invoiced On")) Then
dg.Rows(e.RowIndex).ErrorText = "Please enter an Inoiced On date."
e.Cancel = True
End If
End Sub
请告诉我它是否有帮助. =)