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
看起来我们需要一种方法来阻止执行,如果用户只需单击网格然后单击表单中的其他位置.
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. =)
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