技術問題

如何取得GridView中的HyperLinkField 的Text 

 HyperLink href = (HyperLink)row.Cells[0].Controls[0];
            string text = href.Text;

怎样在UpdatePanel里使用FileUpload控件
HTML:

    <div>
        <atlas:ScriptManager ID="ScriptManager1" runat="server" EnablePartialRendering="true">
        </atlas:ScriptManager>
        <atlas:UpdatePanel ID="UpdatePanel1" runat="server">
            <ContentTemplate>
                <asp:FileUpload ID="FileUpload1" runat="server" /><asp:Button ID="cmdButton1" runat="server"
                    Text="Upload" /><asp:Label ID="Label1" runat="server" Text=""></asp:Label>
            </ContentTemplate>
        </atlas:UpdatePanel>
   
        <asp:Button ID="cmdButton2" OnClick="cmdButton2_click"  runat="server" Text="Full post back" /> 
        </div>

CODE BEHIND:

    Protected Sub Page_Load()Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load

        Me.cmdButton1.Attributes.Add("onclick", Page.ClientScript.GetPostBackEventReference(Me.cmdButton2, ""))

    End Sub

    Protected Sub cmdButton2_Click()Sub cmdButton2_Click(ByVal sender As Object, ByVal e As System.EventArgs)
        If Me.FileUpload1.HasFile Then
            System.Threading.Thread.Sleep(1000)
            Me.Label1.Text = Me.FileUpload1.FileName
        End If
    End Sub