如何使DataGridView某些行不能被选中？

Question

前面问了一个问题，但是与想要的有些偏差，所以重新发了这个问题。
如何使DataGridView某些行不能被选中呢？
原本设想在RowLeave事件中记录当前离开的行（先判断不是限制进入的行），在RowEnter事件中判断如果是限制进入的行，则设置CurrentCell为此前离开的那一行。可是这个方法不行：（

Code Snippet

Public leaveRow As Integer = 0

Private Sub DataGridView1_RowEnter(ByVal sender As Object, ByVal e As System.Windows.Forms.DataGridViewCellEventArgs) Handles DataGridView1.RowEnter
If e.RowIndex = 2 Then
DataGridView1.CurrentCell = DataGridView1(e.ColumnIndex, leaveRow)

End If
End Sub

Private Sub DataGridView1_RowLeave(ByVal sender As Object, ByVal e As System.Windows.Forms.DataGridViewCellEventArgs) Handles DataGridView1.RowLeave
If e.RowIndex <> 2 Then
leaveRow = e.RowIndex
End If
End Sub

Answer 1

Code Snippet

Private Sub DataGridView1_MouseDown(ByVal sender As System.Object, ByVal e As System.Windows.Forms.MouseEventArgs) Handles DataGridView1.MouseDown
        Dim hit As DataGridView.HitTestInfo
        hit = DataGridView1.HitTest(e.X, e.Y)
        enterRow = hit.RowIndex
    End Sub

    Private Sub DataGridView1_RowValidating(ByVal sender As System.Object, ByVal e As System.Windows.Forms.DataGridViewCellCancelEventArgs) Handles DataGridView1.RowValidating
        If (leaveRow <> 2 And enterRow = 2) Then
            e.Cancel = True
        End If
    End Sub

 

 

Answer 2

谢谢。我现在使用另一种方法实现了。请大家帮我参谋一下是否有致命的漏洞。

Code Snippet

Private disableRow As New Dictionary(Of Integer, Integer)  
Public Sub AddDisableRow(ByVal rowIndex As Integer)
 
If Not disableRow.ContainsKey(rowIndex) Then
 
disableRow.Add(rowIndex, rowIndex)
End If

End Sub

Public Sub RemoveDisableRow(ByVal rowIndex As Integer)
 
If Not disableRow.ContainsKey(rowIndex) Then
 
disableRow.Remove(rowIndex)
End If

End Sub

Public Sub ClearDisableRow(ByVal rowIndex As Integer)
 
disableRow.Clear()
End Sub

Protected Overrides Function SetCurrentCellAddressCore(ByVal columnIndex As Integer, ByVal rowIndex As Integer, ByVal setAnchorCellAddress As Boolean, ByVal validateCurrentCell As Boolean, ByVal throughMouseClick As Boolean) As Boolean
 
If Me.SelectionMode = DataGridViewSelectionMode.FullRowSelect AndAlso disableRow.Count > 0 AndAlso disableRow.ContainsKey(rowIndex) Then
 
Me.SetSelectedCellCore(columnIndex, rowIndex, False)
 
Me.SetSelectedRowCore(rowIndex, False)
 
Me.SetSelectedRowCore(Me.CurrentRow.Index, True)
Return False
End If
Return MyBase.SetCurrentCellAddressCore(columnIndex, rowIndex, setAnchorCellAddress, validateCurrentCell, throughMouseClick)
End Function