Question

在ASP.NET Gridview的RowDataBound事件中，我试图在模板字段中读取Label的值。我更喜欢在RowUpdating事件中捕获这个值，但出于某种原因我似乎记得它是不可能的。这是ASP ......

<asp:TemplateField  HeaderText="Translation" ItemStyle-Width="250" >                      
    <ItemTemplate>
           <asp:Label ID="Label11" runat="server" Text='<%# Bind("lang_String") %>' Width="250px"></asp:Label>
    </ItemTemplate>

这是我试图找出的VB.net代码....

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

    If (e.Row.RowState And DataControlRowState.Edit) > 0 Then
        ' The value in the third column postion.
        Dim needThisValue as string = e.Row.Cells(3).Text

    End If
End Sub

非常感谢任何和所有帮助。

感谢，

Answer 1

我不确定为什么您认为自己的标签位于EditItemTemplate，因为您选择了RowState=DataControlRowState.Edit。

实际上你需要检查RowType=DataControlRowType.DataRow。这是必需的，因为第一行的RowType是标题。

http://msdn.microsoft.com/en-us/library/system.web.ui.webcontrols.gridviewrow.rowtype.aspx

Private Sub GridView1_RowDataBound(sender As Object, e As System.Web.UI.WebControls.GridViewRowEventArgs) Handles GridView1.RowDataBound
    If e.Row.RowType = DataControlRowType.DataRow Then
        ' in the following way you get the row's DataSource: '
        Dim row = DirectCast(e.Row.DataItem, DataRowView).Row
        ' you could also use the DataSource to get the value: '
        Dim lang_String = row.Field(Of String)("lang_String")
        ' and here you get the reference to your Label in the ItemTemplate: '
        Dim Label11 = DirectCast(e.Row.FindControl("Label11"), Label)
        ' at this point Label11.Text is already set to lang_String '
    End If
End Sub

如果你想获得EditItemTemplate的控件，你需要检查RowState，例如在你的GridView中（通常你会在EditItemTemplate中使用像TextBox这样的可编辑控件）：

 <ItemTemplate>
    <asp:Label ID="LblLanguage" runat="server" Text='<%# Bind("lang_String") %>' Width="250px"></asp:Label>
</ItemTemplate>
<EditItemTemplate>
    <asp:TextBox ID="TxtLanguage" runat="server" Text='<%# Bind("lang_String") %>' Width="250px"></asp:TextBox>
</EditItemTemplate>

RowDataBound中的

：

Private Sub GridView1_RowDataBound(sender As Object, e As System.Web.UI.WebControls.GridViewRowEventArgs) Handles GridView1.RowDataBound
    If e.Row.RowType = DataControlRowType.DataRow Then
        ' in the following way you get the row's DataSource: '
        Dim row = DirectCast(e.Row.DataItem, DataRowView).Row
        ' you could also use the DataSource to get the value: '
        Dim lang_String = row.Field(Of String)("lang_String")

        If e.Row.RowState = DataControlRowState.Normal Then
            ' and here you get the reference to your Label in the ItemTemplate: '
            Dim LblLanguage = DirectCast(e.Row.FindControl("LblLanguage"), Label)
            ' at this point LblLanguage.Text is already set to lang_String '
        ElseIf e.Row.RowState = DataControlRowState.Edit Then
            ' and here you get the reference to your TextBox in the EditItemTemplate: '
            Dim TxtLanguage = DirectCast(e.Row.FindControl("TxtLanguage"), TextBox)
            ' at this point TxtLanguage.Text is already set to lang_String '
        End If
    End If
End Sub

请注意，我已将控件的ID更改为更具可读性。

如何捕获gridview模板字段的值

1 个答案: