Bug. FileUpload within UpdatePanel
Example below : the FileUpload2 will work, but FileUpload1 won't.
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="local_Default" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title>FileUpload & UpdatePanel</title>
</head>
<body>
<form id="form1" runat="server">
<asp:ScriptManager ID="ScriptManager1" runat="server">
</asp:ScriptManager>
<div>
<div>
FileUpload component within in UpdatePanel</div>
<div>
<asp:UpdatePanel ID="UpdatePanel1" runat="server">
<ContentTemplate>
<div>
<asp:FileUpload ID="FileUpload1" runat="server" />
</div>
<div>
<asp:Button ID="Button1" runat="server" Text="確認" OnClick="Button1_Click" />
</div>
<asp:Label ID="Label1" runat="server"></asp:Label>
</ContentTemplate>
</asp:UpdatePanel>
</div>
<div>
<div>
FileUpload</div>
<div>
<asp:FileUpload ID="FileUpload2" runat="server" />
</div>
<div>
<asp:Button ID="Button2" runat="server" Text="確認" OnClick="Button2_Click" />
</div>
<asp:Label ID="Label2" runat="server"></asp:Label>
</div>
</div>
</form>
</body>
</html>
using System;
using System.Collections;
using System.Configuration;
using System.Data;
using System.Linq;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Xml.Linq;
public partial class local_Default : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
}
protected void Button1_Click(object sender, EventArgs e)
{
if (FileUpload1.HasFile)
{
Label1.Text = FileUpload1.PostedFile.FileName;
}
}
protected void Button2_Click(object sender, EventArgs e)
{
if (FileUpload2.HasFile)
{
Label2.Text = FileUpload2.PostedFile.FileName;
}
}
}
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