我需要一个建议如何更正我的代码。我正在使用 FindControl 方法在 Repeater 中查找 TextBox。这是我的标记:
<asp:Repeater ID="Repeater1">
HERE ARE SOME OTHER DATA
<ItemTemplate>
<asp:FormView ID="FormViewAddComment" runat="server"
DataSourceID="SqlDataSourceInsertComments" DefaultMode="Insert"
OnItemInserted="FormViewAddComment_ItemInserted"
OnItemInserting="FormViewAddComment_ItemInserting">
<InsertItemTemplate>
<asp:TextBox ID="txtAddComment" runat="server" CssClass="textbox"
Text='<%# Bind("CommentText") %>' Width="200px" />
<asp:Button ID="btnAddComment" runat="server" CssClass="button"
Text="Comment" CommandName="Insert" CausesValidation="false"/>
</InsertItemTemplate>
</asp:FormView>
</ItemTemplate>
</asp:Repeater>
这是我背后的代码:
Protected Sub FormViewAddComment_ItemInserting(sender As Object, e As FormViewInsertEventArgs)
Dim FormView As FormView = DirectCast(Repeater1.FindControl("FormViewAddComment"), FormView)
Dim Comment As TextBox = DirectCast(FormView.FindControl("txtAddComment"), TextBox)
If Comment.Text = "" Then
Exit Sub
End If
End Sub
未找到 Comment TextBox,并且代码在尝试访问 Text 属性时引发对象引用错误。