你如何正確使用GetRowCount方法具有多個運行時產生的datagridview的控制？

Question

我有多個運行時生成的datagridview控制和我想能夠看到用戶是否已經在特定的datagridview選擇多行。出於某種原因，以下結果始終爲零。當我F9停止該程序時，我可以看到此datagridview行的選定值爲false。任何想法如何解決這一問題？

我的代碼如下：

strDGVName = "dgvCheckpoint" & intTimeModificationSender 

For Each tbp As TabPage In frmTimingP2P.tabctrlTimingTable.Controls 
    For Each dgv In tbp.Controls 
     If dgv.Name = strDGVName Then 
      intSelectedRowCount = dgv.Rows.GetRowCount(DataGridViewElementStates.Selected) 
     End If 
    Next 
Next 

感謝

現在我已經試過如下：

For Each tbp As TabPage In frmTimingP2P.tabctrlTimingTable.Controls 
    For Each ctrl As Control In tbp.Controls 
     Dim dgv As DataGridView = TryCast(ctrl, DataGridView) 
     If Not dgv Is Nothing Then 
      If dgv.Name = strDGVName Then 
       intSelectedRowCount = dgv.SelectedRows.Count 
      End If 
     End If 
    Next 
Next 

除了：

Dim c As Collections.Generic.IEnumerable(Of DataGridView) 
For p = 0 To frmTimingP2P.tabctrlTimingTable.TabCount - 1 
    c = frmTimingP2P.tabctrlTimingTable.TabPages(p).Controls.OfType(Of DataGridView)() 
    If c(0).Name = strDGVName Then p = frmTimingP2P.tabctrlTimingTable.TabCount 
    End If 
Next 
intSelectedRowCount = c(0).SelectedRows.Count 

但它仍然返回一個零行數。

Answer 1

好了，該解決方案如下：

兩個：

For Each tbp As TabPage In frmTimingP2P.tabctrlTimingTable.Controls 
    For Each ctrl As Control In tbp.Controls 
     Dim dgv As DataGridView = TryCast(ctrl, DataGridView) 
     If Not dgv Is Nothing Then 
      If dgv.Name = strDGVName Then 
       intSelectedRowCount = dgv.SelectedRows.Count 
      End If 
     End If 
    Next 
Next 

和：

Dim c As Collections.Generic.IEnumerable(Of DataGridView) 
For p = 0 To frmTimingP2P.tabctrlTimingTable.TabCount - 1 
    c = frmTimingP2P.tabctrlTimingTable.TabPages(p).Controls.OfType(Of DataGridView)() 
    If c(0).Name = strDGVName Then p = frmTimingP2P.tabctrlTimingTable.TabCount 
Next 
intSelectedRowCount = c(0).SelectedRows.Count 

正常工作。問題是，在我運行時生成的DataGridView控件，我並沒有將SelectionMode方法設置爲FullRowSelect，我是選擇單個細胞，這不能算作「行」。

感謝您的幫助！

Answer 2

這應該是你在找什麼：

dgv.SelectedRows.Count