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ASP .NET 1.1 DropDownList working in FireFox, not IE 7

38
I'm fairly new to ASP.NET, although I have a fair amount of C# experience.

I'm creating a SharePoint Web Part, but I'm doing the development for it locally in ASP.NET 1.1

I'm using a DropDownList control with autopostback = true in order to run code on the SelectedIndexChanged event. Both IE 7 and FireFox are obviously loading a page again when a selection is made, but only FireFox actually shows the changes made to the page.

I tried a simple sample page and noticed the same behaviour, here it is

aspx page

<%@ Page language="c#" Codebehind="FakeFormToCodeSteal.aspx.cs" AutoEventWireup="false" Inherits="WebPartTester.FakeFormToCodeSteal" debug="True"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" >
<HTML>
<HEAD>
<title>FakeFormToCodeSteal</title>
<meta name="GENERATOR" Content="Microsoft Visual Studio .NET 7.1">
<meta name="CODE_LANGUAGE" Content="C#">
<meta name="vs_defaultClientScript" content="JavaScript">
<meta name="vs_targetSchema" content="http://schemas.microsoft.com/intellisense/ie5">
</HEAD>
<body MS_POSITIONING="GridLayout">
<form id="Form1" method="post" runat="server">
<asp:DropDownList id="DropDownList1" style="Z-INDEX: 101; LEFT: 344px; POSITION: absolute; TOP: 176px"
runat="server" Width="120px" Height="24px" AutoPostBack="True">
<asp:ListItem Value="The First one">The First one</asp:ListItem>
<asp:ListItem Value="The second">The second</asp:ListItem>
<asp:ListItem Value="One more">One more</asp:ListItem>
</asp:DropDownList>
<asp:TextBox id="TextBox1" style="Z-INDEX: 102; LEFT: 88px; POSITION: absolute; TOP: 88px" runat="server"
Width="232px"></asp:TextBox>
<asp:Label id="lbl" style="Z-INDEX: 103; LEFT: 40px; POSITION: absolute; TOP: 168px" runat="server"
Width="272px" Height="160px">Stuff here</asp:Label>
</form>
</body>
</HTML>


aspx.cs page

using System;
using System.Collections;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Web;
using System.Web.SessionState;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.HtmlControls;

namespace WebPartTester
{
/// <summary>
/// Summary description for FakeFormToCodeSteal.
/// </summary>
public class FakeFormToCodeSteal : System.Web.UI.Page
{
protected System.Web.UI.WebControls.TextBox TextBox1;
protected System.Web.UI.WebControls.Label lbl;
protected System.Web.UI.WebControls.DropDownList DropDownList1;

private void Page_Load(object sender, System.EventArgs e)
{
// Put user code to initialize the page here
}

#region Web Form Designer generated code
override protected void OnInit(EventArgs e)
{
//
// CODEGEN: This call is required by the ASP.NET Web Form Designer.
//
InitializeComponent();
base.OnInit(e);
}

/// <summary>
/// Required method for Designer support - do not modify
/// the contents of this method with the code editor.
/// </summary>
private void InitializeComponent()
{
this.DropDownList1.SelectedIndexChanged += new System.EventHandler(this.DropDownList1_SelectedInd exChanged);
this.Load += new System.EventHandler(this.Page_Load);

}
#endregion

private void DropDownList1_SelectedIndexChanged(object sender, System.EventArgs e)
{
lbl.Text = DropDownList1.SelectedItem.Text + " Made it here";
}
}
}

Any help would be much appreciated
Jul 12 '07 #1
3 5510
Plater
7,872 Expert 4TB
It could be just something as dumb as a caching issue. I can't think of another way the backend code would cause different reactions from firefox/IE. Web design code yes, backend code no.
Try setting the page to not be cached and see if it helps?
Jul 13 '07 #2
drhowarddrfine
7,435 Expert 4TB
Just a note as I'm passing through. Your doctype is invalid and puts IE into quirks mode. Although new pages should always use a strict doctype, if you must use transitional, use this one:

<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
"http://www.w3.org/TR/html4/loose.dtd">
Jul 13 '07 #3
mwalts
38
Thanks for the replies. I'll try that doc type, I'll admit, I just let VS 2003 put in its default.

I think it might have been a caching issue as well. I ended up adding localhost to the safe sites list and that did it, it now works... not sure why though.

Thanks again for the help.

-mwalts
Jul 13 '07 #4

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