Question

我有一个Gridview，我创建了一个连接到RowDataBound事件的动态页脚。

然而，有三个列没有数据的可能性为50/50。

我希望能够在没有数据的情况下动态隐藏列。

我已经尝试在RowDatabound事件中执行此操作，方法是检查值是否为= 0但是这不起作用，因为我认为事件是早期调用的？

在绑定了所有数据之后，是否还要引用页脚行中的值？

理想情况下在VB中

`Protected Sub GridView1_RowDataBound(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.GridViewRowEventArgs) Handles GridView1.RowDataBound




    If e.Row.RowType = DataControlRowType.DataRow Then
        TotalOffered += DataBinder.Eval(e.Row.DataItem, "Offered")
        TotalHandled += DataBinder.Eval(e.Row.DataItem, "Handled")
        TotalHandled30 += DataBinder.Eval(e.Row.DataItem, "Handled30")
        TotalHandlingTime += (DataBinder.Eval(e.Row.DataItem, "AHT") * DataBinder.Eval(e.Row.DataItem, "Handled"))
        TotalTalkTime += ((DataBinder.Eval(e.Row.DataItem, "AHT") * DataBinder.Eval(e.Row.DataItem, "Talk"))) * DataBinder.Eval(e.Row.DataItem, "Handled")
        TotalHoldTime += ((DataBinder.Eval(e.Row.DataItem, "AHT") * DataBinder.Eval(e.Row.DataItem, "Hold"))) * DataBinder.Eval(e.Row.DataItem, "Handled")
        TotalWrapTime += ((DataBinder.Eval(e.Row.DataItem, "AHT") * DataBinder.Eval(e.Row.DataItem, "Work"))) * DataBinder.Eval(e.Row.DataItem, "Handled")

        ' If there is agent data calculate a running total
        If IsDBNull(DataBinder.Eval(e.Row.DataItem, "Pri_Agent_Sign_in")) Then
            GridView1.Columns(0).Visible = False


        Else
            TotalSignedin += DataBinder.Eval(e.Row.DataItem, "Pri_Agent_Sign_in")
            TotalAvail += DataBinder.Eval(e.Row.DataItem, "Pri_Agent_Sign_in") * DataBinder.Eval(e.Row.DataItem, "Avail_Time")
            TotalIdle += DataBinder.Eval(e.Row.DataItem, "Pri_Agent_Sign_in") * DataBinder.Eval(e.Row.DataItem, "Unavail_Time")



        End If

        ' If there is forecast data calculate a running total

        If IsDBNull(DataBinder.Eval(e.Row.DataItem, "ORG_FOR_VOL")) Then


        Else
            TotalForecastVolume += DataBinder.Eval(e.Row.DataItem, "ORG_FOR_VOL")
            TotalForecastAHT += DataBinder.Eval(e.Row.DataItem, "ORG_FOR_VOL") * DataBinder.Eval(e.Row.DataItem, "ORG_FOR_AHT")
        End If



    ElseIf e.Row.RowType = DataControlRowType.Footer Then
        e.Row.Cells(0).Text = "Totals : "
        e.Row.Cells(1).Text = TotalOffered.ToString
        e.Row.Cells(2).Text = TotalHandled.ToString
        e.Row.Cells(3).Text = TotalHandled30.ToString
        e.Row.Cells(4).Text = (TotalHandled / TotalOffered).ToString("#0%")
        e.Row.Cells(5).Text = (TotalHandled30 / TotalHandled).ToString("#0%")
        e.Row.Cells(6).Text = (TotalHandlingTime / TotalHandled).ToString("N0")
        e.Row.Cells(7).Text = (TotalTalkTime / TotalHandlingTime).ToString("#0%")
        e.Row.Cells(8).Text = (TotalHoldTime / TotalHandlingTime).ToString("#0%")
        e.Row.Cells(9).Text = (TotalWrapTime / TotalHandlingTime).ToString("#0%")


        ' If agent data then add total data to footer
        If TotalSignedin = 0 Then

        Else

            e.Row.Cells(11).Text = (TotalAvail / TotalSignedin).ToString("#0%")
            e.Row.Cells(12).Text = (TotalIdle / TotalSignedin).ToString("#0%")
            e.Row.Cells(12).HorizontalAlign = HorizontalAlign.Center

        End If

        If TotalForecastVolume = 0 Then

        Else

            e.Row.Cells(13).Text = TotalForecastVolume.ToString
            e.Row.Cells(14).Text = (TotalForecastAHT / TotalForecastVolume).ToString("F0")

        End If

    End If`

Answer 1

如果我正确理解你的要求，那么你想要的代码看起来应该是这样的（我正在使用vb.net 2008，我最接近网格视图的项目是DataGridView。如果你使用aspx然后让我知道，我会为它生成一些代码）：

For i = 0 To DataGridView1.ColumnCount - 1
        If DataGridView1.Rows(0).Cells(i).Value = "" Then
            DataGridView1.Columns(i).Visible = False
        End If
    Next

这当然是网格填充后的代码。

以下是在GridView完全加载后可以放入aspx.vb文件的代码：

For i = 0 To GridView1.Columns.Count - 1
        If GridView1.FooterRow.Cells(i).Text = "" Then
            GridView1.Columns(0).Visible = False
        End If
    Next

如果要在填充gridview时隐藏列，则必须提交代码。

Answer 2

在RowCreated中尝试此操作。这是我的猜测，但无法看到您的任何代码。

 Protected Sub GridView1_RowCreated(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.GridViewRowEventArgs) Handles GridView1.RowCreated
    If e.Row.RowType = DataControlRowType.Footer Then
        If e.Row.Cells(0).Text = "" Then
            GridView1.Columns(0).Visible = False
        End If
    End If
End Sub

请参阅GridView动态创建的ASP VB中的页脚值

2 个答案: