本文整理匯總了VB.NET中System.Windows.Forms.DataGridView.RowValidating事件的典型用法代碼示例。如果您正苦於以下問題:VB.NET DataGridView.RowValidating事件的具體用法?VB.NET DataGridView.RowValidating怎麽用?VB.NET DataGridView.RowValidating使用的例子?那麽, 這裏精選的事件代碼示例或許可以為您提供幫助。您也可以進一步了解該事件所在類System.Windows.Forms.DataGridView
的用法示例。
在下文中一共展示了DataGridView.RowValidating事件的1個代碼示例,這些例子默認根據受歡迎程度排序。您可以為喜歡或者感覺有用的代碼點讚,您的評價將有助於係統推薦出更棒的VB.NET代碼示例。
示例1: ValidateByRow
Private Sub ValidateByRow(ByVal sender As Object, _
ByVal data As DataGridViewCellCancelEventArgs) _
Handles songsDataGridView.RowValidating
Dim row As DataGridViewRow = _
songsDataGridView.Rows(data.RowIndex)
Dim trackCell As DataGridViewCell = _
row.Cells(songsDataGridView.Columns("Track").Index)
Dim dateCell As DataGridViewCell = _
row.Cells(songsDataGridView.Columns("Release Date").Index)
data.Cancel = Not (IsTrackGood(trackCell) _
AndAlso IsDateGood(dateCell))
End Sub
Private Function IsTrackGood(ByRef cell As DataGridViewCell) As Boolean
If cell.Value.ToString().Length = 0 Then
cell.ErrorText = "Please enter a track"
songsDataGridView.Rows(cell.RowIndex).ErrorText = _
"Please enter a track"
Return False
ElseIf cell.Value.ToString().Equals("0") Then
cell.ErrorText = "Zero is not a valid track"
songsDataGridView.Rows(cell.RowIndex).ErrorText = _
"Zero is not a valid track"
Return False
ElseIf Not Integer.TryParse( _
cell.Value.ToString(), New Integer()) Then
cell.ErrorText = "A Track must be a number"
songsDataGridView.Rows(cell.RowIndex).ErrorText = _
"A Track must be a number"
Return False
End If
Return True
End Function
Private Function IsDateGood(ByRef cell As DataGridViewCell) As Boolean
If cell.Value Is Nothing Then
cell.ErrorText = "Missing date"
songsDataGridView.Rows(cell.RowIndex).ErrorText = _
"Missing date"
Return False
Else
Try
DateTime.Parse(cell.Value.ToString())
Catch ex As FormatException
cell.ErrorText = "Invalid format"
songsDataGridView.Rows(cell.RowIndex).ErrorText = _
"Invalid format"
Return False
End Try
End If
Return True
End Function