我正在使用vb.net和winforms .
我有一个带有Bound DataGridView的Form . 在DGV上我有5列ComboBox . 我正在使用EditingControlShowing甚至捕获ComboBox选择 . (见下面的代码) . 这是问题所在:
单击带有ComboBox的单元格并进行选择,然后更新基础单元格(单元格=选定值),然后单击DGV的另一行,它会变得混乱 . 如果我在DataSource的相应行上更新Cell I do和EndEdit后,它似乎可以找到 .
如何确定相应的数据源行,以便我可以自动执行此操作?
Private Sub dataGridView1_EditingControlShowing(ByVal sender As Object, ByVal e As DataGridViewEditingControlShowingEventArgs) _
Handles DataGridView1.EditingControlShowing
Try
Debug.Print("entered the EditingControlShowing")
Dim ColName As String = Me.DataGridView1.Columns(Me.DataGridView1.CurrentCell.ColumnIndex).Name
If ColName = "Col1" Then 'Or ColName = "Col2" Or ColName = "Col3" Or ColName = "Col4" Or ColName = "Col5" Then
'the column you want to cast
Dim cmb As ComboBox = TryCast(e.Control, ComboBox)
RemoveHandler cmb.SelectedIndexChanged, AddressOf cmb_SelectedIndexChanged
AddHandler cmb.SelectedIndexChanged, AddressOf cmb_SelectedIndexChanged
End If
Catch ex As Exception
MsgBox(ex.Message)
End Try
End Sub
Sub cmb_SelectedIndexChanged(ByVal sender As Object, ByVal e As EventArgs)
Try
Me.DataGridView1.Rows(Me.DataGridView1.CurrentRow.Index).Cells(Me.DataGridView1.CurrentCell.ColumnIndex).Value = CType(sender, ComboBox).SelectedItem
'
' HERE IF I PUT MyDataSet.Tables(0).Rows(?).EndEding it works - but how to konw what row?
'
UpdateAvgColumn(Me.DataGridView1.CurrentRow.Index)
Catch ex As Exception
MsgBox(ex.Message)
End Try
End Sub
1 回答
被解雇的事件正在重新进入 . 如果您当前正在处理某个事件,则必须小心不要处理其他事件 . 如果正在处理不同的事件,则必须将IF语句放在事件处理周围以跳过执行代码 .