I'm having a weird issue where a button's click event is not being fired for a while (around 20-30 seconds) and then starts to work as normal. Refresh the page and I have to wait for it to work again.
Please note this: It works when run in debug on the localhost, the behavior described is only found on the server. I'm starting to suspect a server-side issue, but I don't have access to it and would need to pin-point what might be causing this to the people in charge of it (if it's indeed a server-side issue).
Any help to locate the issue is much appreciated! I stripped the page down to the most basics and this is what I have.
ASP:
<%# Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd (http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd)">
<html xmlns="http://www.w3.org/1999/xhtml (http://www.w3.org/1999/xhtml)">
<head runat="server">
<title></title>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:Button ID="Button1" runat="server" onclick="Button1_Click" Text="Button" />
</div>
</form>
</body>
</html>
Code-behind:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
public partial class _Default : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
}
protected void Button1_Click(object sender, EventArgs e)
{
Response.Redirect("http://www.google.se/ (http://www.google.se/)");
}
}
Config:
<configuration>
<system.web>
<compilation debug="true" targetFramework="4.0"/>
</system.web>
</configuration>
Related
I have a property x in my code-behind file in a web application project. It gives me compile time error while it does not give any error in website project
<%# Page Language="C#" AutoEventWireup="true" CodeBehind="WebForm1.aspx.cs"
Inherits="test.WebForm1" %>
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title></title>
</head>
<body>
<form id="form1" runat="server">
<div>
<%= x2 %>
<%# x2 %>
</div>
</form>
</body>
</html>
Codebehind file :
using System;
namespace test
{public partial class WebForm1 : System.Web.UI.Page
{
public int x2 = 2;
protected void Page_Load(object sender, EventArgs e)
{
}
}
}
It is working fine when I use the same technique in my website project
Kindly help
Thanks
Check if there are any other errors in your code behind WebForm1.aspx.cs.
like missing reference or any other compile error.
This works for me. Are you sure there's a value in ViewState? On form load add a value to test.
ViewState["FormMode"] = "ViewApplicant";
lblMessage.DataBind();
Also make sure the label has some text to view. It could be showing but is empty.
<asp:Label ID="lblMessage" runat="server"
Text="some text"
Visible='<%# FormMode == "View" || FormMode == "ViewApplicant" %>'>
</asp:Label>
Your code is perfectly okay. While accessing the variable/property initillay, the red underline may appear under the expression indicating the compile error, but when you build the solution, there should be no error.
Your original post has changed so here's a new answer.
Try removing the namespace from the code behind and change 'inherits' on the page to Inherits="WebForm1".
page directive:
<%# Page Language="C#" AutoEventWireup="true" CodeBehind="WebForm1.aspx.cs"
Inherits="WebForm1" %>
code behind:
using System;
public partial class WebForm1 : System.Web.UI.Page
{
public int x2 = 2;
protected void Page_Load(object sender, EventArgs e)
{
}
}
'Inherits' must match the partial class name.
I've searched this error in all google results, but I can't find a solution.
I have this WebForm:
<%# Page Language="C#" AutoEventWireup="true" CodeBehind="LoTest.aspx.cs" Inherits="-.-.-.LoTest" %>
<%# Register TagPrefix="ajax" Namespace="MagicAjax.UI.Controls" Assembly="MagicAjax" %>
<!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></title>
</head>
<body>
<form id="form1" runat="server">
<div>
<ajax:AjaxPanel ID="ajaxLG" runat="server" AjaxCallConnection="Synchronous">
<asp:Button ID="btnTest" runat="server" CssClass="button" ToolTip="gin." Text="LogIn" OnClick="btnTest_Click"></asp:Button>
</ajax:AjaxPanel>
</div>
</form>
</body>
</html>
Code Behind:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using MagicAjax.UI;
using MagicAjax;
namespace -.-.-
{
public partial class LoTest : AjaxPage
{
protected void Page_Load(object sender, EventArgs e)
{
}
protected void btnTest_Click(object sender, EventArgs e)
{
AjaxCallHelper.WriteAlert("Test msg");
}
}
}
The web.config:
<httpModules>
<add name="MagicAjaxModule" type="MagicAjax.MagicAjaxModule, MagicAjax"/>
</httpModules>
In the Line “AjaxCallHelper.WriteAlert("Test msg");” throws the error:
Using the AjaxCallHelper write methods outside of an AjaxCall is not allowed.
In IE, just add the site to the compatibility view and that´s all.
Seems like if AjaxMagix.dll works with older elements of the explorer.
In Google Chrome doesn´t work.
After I click button1, it display 0, why? How can get correct width of a DropDownList control? Thanks!
<%# Page Language="C#" AutoEventWireup="true" CodeFile="Default2.aspx.cs" Inherits="Default2" %>
<!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></title>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:Button ID="Button1" runat="server" Text="Button" />
<asp:DropDownList ID="DropDownList1" runat="server">
<asp:ListItem>Item 1</asp:ListItem>
<asp:ListItem>Item 2</asp:ListItem>
</asp:DropDownList>
</div>
</form>
</body>
</html>
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
public partial class Default2 : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
}
protected void Button1_Click(object sender, EventArgs e)
{
Button1.Text = DropDownList1.Width.Value.ToString();
}
}
It's because the value Width is not set. In html, when the width value is not set, you let the browser choose the size.
Moreover, the asp.net engine only host properties to be able to render the correct Html. If you look at the code of the textbox, you will see that if you put a witdh, it will produces a style="width:yourvalue". ASP.net runs on the server side, so it do not have any idea of the actual size of the control.
If you actually require the client size of the dropdownlist, either specify it explicitly, or use some custom javascript to calculate the actual size of the control, then to pass the calculted size to an hidden field. In the code behind you be able to get the value from the Page.Request.Form collection.
Please clarify your need if you need further explanation.
I was trying to figure out why my UpdatePanel is so SLOW (after Button1's postback) in an ASP.NET application:
<%# Page Language="C#" AutoEventWireup="true" CodeBehind="WebForm1.aspx.cs" Inherits="MyNamespace.WebForm1" %>
<%# Register assembly="AjaxControlToolkit" namespace="AjaxControlToolkit" tagprefix="cc1" %>
<!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></title>
</head>
<body>
<form id="form1" runat="server">
<cc1:ToolkitScriptManager ID="ToolkitScriptManager1" runat="server"/>
<asp:UpdatePanel ID="UpdatePanel1" runat="server" UpdateMode="Conditional">
<ContentTemplate>
<asp:Button ID="Button1" runat="server" onclick="Button1_Click" Text="Button" />
</ContentTemplate>
</asp:UpdatePanel>
</form>
</body>
</html>
code behind:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
namespace MyNamespace
{
public partial class WebForm1 : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
}
protected void Button1_Click(object sender, EventArgs e)//this is slow!!
{
Button btn = sender as Button;
btn.Text = DateTime.Now.ToString("hhmmssfff");
}
}
}
I was searching here in StackOverflow but I couldn't find a straight forward answer.
Anyone knows something that might speed this up?
I've seen a faster UpdatePanel button postback when I run my webapplication using http://Junior-PC. But when I use http://localhost is pretty slower.
The only difference between a regular web application and this one is in Web application properties-> Web tab-> Servers section where is marked Use Local IIS Web Server-> Project Url: http://localhost/ and Override application root URL.
If you're using Firefox, don't forget do disable IPv6 in (enter about:config in URL). Except that, code looks fine. What's the speed of regular postbacks? Tried other browsers?
Please try to use classic script manager:
asp:ScriptManager
instead of:
cc1:ToolkitScriptManager.
Morover please unregister AjaxControlToolkit because in this case it is unnecessary. Let us know it helps.
I am using ASP.NET 2.0 AJAX Extensions 1.0 with the version v1.0.20229 of the AJAX Control Toolkit (which to my knowledge is the latest for .NET 2.0/Visual Studio 2005).
My web page (aspx) has a DropDownList control on an UpdatePanel. In the handler for the DropDownList's SelectedIndexChanged event I attempt to set a session variable.
The first time the event is fired, I get a Sys.WebForms.PageRequestManagerParserErrorException: "The message received from the server could not be parsed". If I continue, subsequent SelectedIndexChanged's are handled successfully.
I have stumbled upon a solution whereby if I initialise the session variable in my Page_Load (so the event handler is just setting the value of a session variable that already exists as opposed to creating a new one) the problem goes away.
I'm happy to do this, but I'm curious as to exactly what the underlying cause is. Can anyone explain?
(My suspicion is that setting the session variable receives a response from the server which is then returned to the 'caller', but it's not the sort of response it knows how to deal with causing the exception?)
EDIT: I reproduced the problem in a seperate little project:
Default.aspx
<%# Page Language="C#" AutoEventWireup="true" CodeBehind="Default.aspx.cs" Inherits="SessionTest._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>Untitled Page</title>
</head>
<body>
<form id="form1" runat="server">
<asp:ScriptManager ID="ScriptManager1" runat="server" />
<div>
<asp:UpdatePanel id="upCategorySelector" runat="server">
<ContentTemplate>
Category:
<asp:DropDownList ID="ddlCategory" runat="server" AutoPostBack="true" OnSelectedIndexChanged="ddlCategories_SelectedIndexChanged">
<asp:ListItem>Item 1</asp:ListItem>
<asp:ListItem>Item 2</asp:ListItem>
<asp:ListItem>Item 3</asp:ListItem>
</asp:DropDownList>
</ContentTemplate>
</asp:UpdatePanel>
</div>
</form>
</body>
</html>
Default.aspx.cs
using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
namespace SessionTest
{
public partial class _Default : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
// If I do this, the exception does not occur.
if (Session["key"] == null)
Session.Add("key", 0);
}
protected void ddlCategories_SelectedIndexChanged(object sender, EventArgs e)
{
// If Session["key"] has not been created, setting it from
// the async call causes the excaption
Session.Add("key", ((DropDownList)sender).SelectedValue);
}
}
}