Reply

poiuymn

Member

1 Points

7 Posts

browser refresh, viewstate and updatepanel problem

Apr 23, 2008 08:37 PM|LINK

hello

first of all i must say that i'm new to asp.net.. and i'm not english native speaker so sorry for my poor english :)

i created simple site where can add some textboxes to updatepanel
when "add textbox" button is clicked, in updatepanel appears a textbox and button (which allows to remove that textbox)

first question:

is it possible to find out which "remove" button has been clicked in e.g. page_init or page_load method and then (in this method) remove appropriate textbox and button itself?

i tried to do it in some ways but i couldn't handle it

second question/problem:

when i uncomment in e.g. page_load method those lines:

protected void Page_Load(object sender, EventArgs e)

     {

         // uncomment and run again

         //Label1.Text += "    !!!!!!!    text added in page_load method to label inside UpdatePanel";



         //Label2.Text += "    !!!!!!!    text added in page_load method to label outside UpdatePanel";


     }

i get some error :/

first label is located inside updatepanel, and second outside it, but i noticed that is not important where that label is positioned

 to cause that error you have to:

! dont forget to uncomment that code ;)

open this site in browser - site must be loaded from server, not from cache - just in case put site adress in address bar and hit enter

```
click "add textbox"
```

refresh site - f5 in browser or press "refresh button" in browser

click "postback button" and crash it :/

how to get rid of that error?

what do i do wrong?

here is application code:

<%@ 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 id="Head2" runat="server">
    <title>Untitled Page</title>
</head>
<body>
<form id="form" runat="server">
    <asp:ScriptManager ID="ScriptManager" runat="server">
    </asp:ScriptManager>
    <div>
    <asp:Button ID="buttonAddTextBoxes" runat="server"  Text="Add TextBox" OnClick="buttonAddTextBoxes_Click" />
    <asp:UpdatePanel ID="updatePanelNameBoxes" runat="server">
        <ContentTemplate>
            <asp:PlaceHolder runat="server" ID="placeHolderTextBoxes"></asp:PlaceHolder>
            <asp:Label runat="server" ID="Label1" Text="label inside UpdatePanel"></asp:Label>
        </ContentTemplate>
        <Triggers>
            <asp:AsyncPostBackTrigger ControlID="buttonAddTextBoxes" EventName="Click" />
        </Triggers>
    </asp:UpdatePanel>
    </div>
<asp:Label ID="Label2" runat="server" Text="label outside UpdatePanel"></asp:Label>
<asp:Button ID="Button1" runat="server" Text="PostBack Button" />

</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 Default2 : System.Web.UI.Page
{
    static ArrayList alNameId; 
    private string nameNameTextBox="nameTextBox";
    private string nameNameRemoveButton = "nameRemoveButton";
    private string nameNamePanel = "namePanel";


    protected void Page_PreInit(object sender, EventArgs e)
    {
        Control postBackControl = GetPostBackControl(this.Page);

        if (!this.Page.IsPostBack)
        {
            alNameId = new ArrayList();
            alNameId.Add(1);
        }
        if (postBackControl != null)
        {
            if ((postBackControl.ClientID.ToString() == buttonAddTextBoxes.ID.ToString()))
            {
                int biggestNr = (int)alNameId[alNameId.Count - 1];
                biggestNr++;
                alNameId.Add(biggestNr);
            }
  
        }
    }
     protected void Page_Init(object sender, EventArgs e)
    {

        TextBox tbox = new TextBox();
        tbox.ID = nameNameTextBox + alNameId[0];
        Panel pa = new Panel();
        pa.ID = nameNamePanel + alNameId[0];
        pa.Controls.Add(tbox);
        placeHolderTextBoxes.Controls.Add(pa);

        if(alNameId.Count>1)
        for (int i = 1; i < alNameId.Count; i++)
        {
            TextBox tb = new TextBox();
            tb.ID = nameNameTextBox + alNameId[i];
            Button rb = new Button();
            rb.ID = nameNameRemoveButton + alNameId[i];
            rb.Text = "remove " + alNameId[i];
            rb.Click += new EventHandler(rbButon_Click);
            Panel p = new Panel();
            p.ID = nameNamePanel + alNameId[i];

            p.Controls.Add(tb);
            p.Controls.Add(rb);
            placeHolderTextBoxes.Controls.Add(p);
        }  
    }
     protected void Page_Load(object sender, EventArgs e)
     {
         // uncomment and run again *********************     !!!!!!!!!!!!!!   *************************************
         //Label1.Text += "    !!!!!!!    text added in page_load method to label inside UpdatePanel";

         //Label2.Text += "    !!!!!!!    text added in page_load method to label outside UpdatePanel";

     }

    protected void rbButon_Click(object sender, EventArgs e)
     {
         string name=((Button)sender).ClientID;
         int removeNr = Int32.Parse(name.Substring(nameNameRemoveButton.Length, name.Length - nameNameRemoveButton.Length));
         alNameId.Remove(removeNr);
         placeHolderTextBoxes.Controls.Remove(placeHolderTextBoxes.FindControl(name));
         placeHolderTextBoxes.Controls.Remove(placeHolderTextBoxes.FindControl(nameNameTextBox + removeNr.ToString()));
         placeHolderTextBoxes.Controls.Remove(placeHolderTextBoxes.FindControl(nameNamePanel + removeNr.ToString()));
             

     }

    protected void buttonAddTextBoxes_Click(object sender, EventArgs e)
    {
    }


    public static Control GetPostBackControl(Page thePage)
    {
        Control myControl = null;
        string ctrlName = thePage.Request.Params.Get("__EVENTTARGET");
        if (((ctrlName != null) & (ctrlName != string.Empty)))
        {
            myControl = thePage.FindControl(ctrlName);
        }
        else
        {
            foreach (string Item in thePage.Request.Form)
            {
                Control c = thePage.FindControl(Item);
                if (((c) is System.Web.UI.WebControls.Button))
                {
                    myControl = c;
                }
            }

        }
        return myControl;
    } 

}

web config file:

<!-- 
    Note: As an alternative to hand editing this file you can use the 
    web admin tool to configure settings for your application. Use
    the Website->Asp.Net Configuration option in Visual Studio.
    A full list of settings and comments can be found in 
    machine.config.comments usually located in 
    \Windows\Microsoft.Net\Framework\v2.x\Config 
-->
<configuration>
  
	<configSections>
		<sectionGroup name="system.web.extensions" type="System.Web.Configuration.SystemWebExtensionsSectionGroup, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35">
			<sectionGroup name="scripting" type="System.Web.Configuration.ScriptingSectionGroup, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35">
				<section name="scriptResourceHandler" type="System.Web.Configuration.ScriptingScriptResourceHandlerSection, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" requirePermission="false" allowDefinition="MachineToApplication"/>
				<sectionGroup name="webServices" type="System.Web.Configuration.ScriptingWebServicesSectionGroup, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35">
					<section name="jsonSerialization" type="System.Web.Configuration.ScriptingJsonSerializationSection, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" requirePermission="false" allowDefinition="Everywhere"/>
					<section name="profileService" type="System.Web.Configuration.ScriptingProfileServiceSection, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" requirePermission="false" allowDefinition="MachineToApplication"/>
					<section name="authenticationService" type="System.Web.Configuration.ScriptingAuthenticationServiceSection, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" requirePermission="false" allowDefinition="MachineToApplication"/>
					<section name="roleService" type="System.Web.Configuration.ScriptingRoleServiceSection, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" requirePermission="false" allowDefinition="MachineToApplication"/>
				</sectionGroup>
			</sectionGroup>
		</sectionGroup>
	</configSections>
	<appSettings/>
	<connectionStrings>
    <!--
    <add
      name="NorthwindConnectionString"
      connectionString="Data Source=;Initial Catalog=Northwind;Persist Security Info=True;"
      providerName="System.Data.SqlClient"/>
    -->
    <add name="NorthwindConnectionString"
       providerName="System.Data.SqlClient"
       connectionString="server=.\SQLEXPRESS;database=Northwind;Integrated Security=SSPI" />
  </connectionStrings>
	<system.web>
		<!-- 
            Set compilation debug="true" to insert debugging 
            symbols into the compiled page. Because this 
            affects performance, set this value to true only 
            during development.
        -->
		<compilation debug="true">
			<assemblies>
				<add assembly="System.Core, Version=3.5.0.0, Culture=neutral, PublicKeyToken=B77A5C561934E089"/>
				<add assembly="System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/>
				<add assembly="System.Data.DataSetExtensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=B77A5C561934E089"/>
				<add assembly="System.Xml.Linq, Version=3.5.0.0, Culture=neutral, PublicKeyToken=B77A5C561934E089"/>
				<add assembly="System.Design, Version=2.0.0.0, Culture=neutral, PublicKeyToken=B03F5F7F11D50A3A"/>
				<add assembly="System.Web.Extensions.Design, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/>
				<add assembly="System.Windows.Forms, Version=2.0.0.0, Culture=neutral, PublicKeyToken=B77A5C561934E089"/></assemblies>
		</compilation>
		<!--
            The <authentication> section enables configuration 
            of the security authentication mode used by 
            ASP.NET to identify an incoming user. 
        -->
		<authentication mode="Windows"/>
		<!--
            The <customErrors> section enables configuration 
            of what to do if/when an unhandled error occurs 
            during the execution of a request. Specifically, 
            it enables developers to configure html error pages 
            to be displayed in place of a error stack trace.

        <customErrors mode="RemoteOnly" defaultRedirect="GenericErrorPage.htm">
            <error statusCode="403" redirect="NoAccess.htm" />
            <error statusCode="404" redirect="FileNotFound.htm" />
        </customErrors>
        -->
		<pages>
			<controls>
				<add tagPrefix="asp" namespace="System.Web.UI" assembly="System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/>
				<add tagPrefix="asp" namespace="System.Web.UI.WebControls" assembly="System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/>
			</controls>
		</pages>
		<httpHandlers>
			<remove verb="*" path="*.asmx"/>
			<add verb="*" path="*.asmx" validate="false" type="System.Web.Script.Services.ScriptHandlerFactory, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/>
			<add verb="*" path="*_AppService.axd" validate="false" type="System.Web.Script.Services.ScriptHandlerFactory, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/>
			<add verb="GET,HEAD" path="ScriptResource.axd" type="System.Web.Handlers.ScriptResourceHandler, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" validate="false"/>
		</httpHandlers>
		<httpModules>
			<add name="ScriptModule" type="System.Web.Handlers.ScriptModule, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/>
		</httpModules>
	</system.web>
	<system.codedom>
		<compilers>
			<compiler language="c#;cs;csharp" extension=".cs" warningLevel="4" type="Microsoft.CSharp.CSharpCodeProvider, System, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089">
				<providerOption name="CompilerVersion" value="v3.5"/>
				<providerOption name="WarnAsError" value="false"/>
			</compiler>
			<compiler language="vb;vbs;visualbasic;vbscript" extension=".vb" warningLevel="4" type="Microsoft.VisualBasic.VBCodeProvider, System, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089">
				<providerOption name="CompilerVersion" value="v3.5"/>
				<providerOption name="OptionInfer" value="true"/>
				<providerOption name="WarnAsError" value="false"/>
			</compiler>
		</compilers>
	</system.codedom>
	<!-- 
        The system.webServer section is required for running ASP.NET AJAX under Internet
        Information Services 7.0.  It is not necessary for previous version of IIS.
    -->
	<system.webServer>
		<validation validateIntegratedModeConfiguration="false"/>
		<modules>
			<remove name="ScriptModule"/>
			<add name="ScriptModule" preCondition="managedHandler" type="System.Web.Handlers.ScriptModule, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/>
		</modules>
		<handlers>
			<remove name="WebServiceHandlerFactory-Integrated"/>
			<remove name="ScriptHandlerFactory"/>
			<remove name="ScriptHandlerFactoryAppServices"/>
			<remove name="ScriptResource"/>
			<add name="ScriptHandlerFactory" verb="*" path="*.asmx" preCondition="integratedMode" type="System.Web.Script.Services.ScriptHandlerFactory, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/>
			<add name="ScriptHandlerFactoryAppServices" verb="*" path="*_AppService.axd" preCondition="integratedMode" type="System.Web.Script.Services.ScriptHandlerFactory, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/>
			<add name="ScriptResource" preCondition="integratedMode" verb="GET,HEAD" path="ScriptResource.axd" type="System.Web.Handlers.ScriptResourceHandler, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/>
		</handlers>
	</system.webServer>
	<runtime>
		<assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
			<dependentAssembly>
				<assemblyIdentity name="System.Web.Extensions" publicKeyToken="31bf3856ad364e35"/>
				<bindingRedirect oldVersion="1.0.0.0-1.1.0.0" newVersion="3.5.0.0"/>
			</dependentAssembly>
			<dependentAssembly>
				<assemblyIdentity name="System.Web.Extensions.Design" publicKeyToken="31bf3856ad364e35"/>
				<bindingRedirect oldVersion="1.0.0.0-1.1.0.0" newVersion="3.5.0.0"/>
			</dependentAssembly>
		</assemblyBinding>
	</runtime>
</configuration>

ERROR :/

Server Error in '/' Application.

The state information is invalid for this page and might be corrupted.

Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: System.Web.HttpException: The state information is invalid for this page and might be corrupted.

Source Error:

[No relevant source lines]

 Source File:  c:\WINDOWS\Microsoft.NET\Framework\v2.0.50727\Temporary ASP.NET Files\root\3e0e8054\12e1c492\App_Web_985ndyxm.2.cs

Line:  0
            
Stack Trace:

 [ViewStateException: Invalid viewstate. 
	Client IP: 127.0.0.1
	Port: 1206
	User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.2; en-US; rv:1.8.1.6) Gecko/20070725 Firefox/2.0.0.6
	ViewState: /wEWBAKD2uqWAwLW+PLeCgKLsbDlCQKM54rGBicw9qJ/WeCj/vFjLCU7GvCBfnRE
	Referer: http://localhost/Default2.aspx
	Path: /Default2.aspx]

[HttpException (0x80004005): The state information is invalid for this page and might be corrupted.]
   System.Web.UI.ViewStateException.ThrowError(Exception inner, String persistedState, String errorPageMessage, Boolean macValidationError) +267
   System.Web.UI.ClientScriptManager.EnsureEventValidationFieldLoaded() +2133067
   System.Web.UI.ClientScriptManager.ValidateEvent(String uniqueId, String argument) +66
   System.Web.UI.Control.ValidateEvent(String uniqueID, String eventArgument) +108
   System.Web.UI.WebControls.TextBox.LoadPostData(String postDataKey, NameValueCollection postCollection) +36
   System.Web.UI.WebControls.TextBox.System.Web.UI.IPostBackDataHandler.LoadPostData(String postDataKey, NameValueCollection postCollection) +12
   System.Web.UI.Page.ProcessPostData(NameValueCollection postData, Boolean fBeforeLoad) +353
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +7350
   System.Web.UI.Page.ProcessRequest(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +213
   System.Web.UI.Page.ProcessRequest() +86
   System.Web.UI.Page.ProcessRequestWithNoAssert(HttpContext context) +18
   System.Web.UI.Page.ProcessRequest(HttpContext context) +49
   ASP.default2_aspx.ProcessRequest(HttpContext context) in c:\WINDOWS\Microsoft.NET\Framework\v2.0.50727\Temporary ASP.NET Files\root\3e0e8054\12e1c492\App_Web_985ndyxm.2.cs:0
   System.Web.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +358
   System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +64
 Version Information: Microsoft .NET Framework Version:2.0.50727.1433; ASP.NET Version:2.0.50727.1433

Reply

Maheshpandian

Member

8 Points

10 Posts

Re: browser refresh, viewstate and updatepanel problem

Apr 24, 2008 06:12 AM|LINK

http://projectcreatersworld.blogspot.com check this page for view state it helped me a lot

Reply

poiuymn

Member

1 Points

7 Posts

Re: browser refresh, viewstate and updatepanel problem

Apr 24, 2008 01:28 PM|LINK

thanks for your reply

i checked that site, but it didnt help

i really dont know what is wrong with this code

i noticed that similar error occurres when i press "add textbox" instead of "postback button"

when i press "postback button" i get error message on page, and when "add textbox" nothing happens "visually", but Firebug says that the same error occurres

it's something like that:

server error code(?) 500, and information: The state information is invalid for this page and might be corrupted.

and what about detecting in e.g page_init method which "remove" button was clicked?

anyone knows?

Reply

lachlankeown

Member

12 Points

6 Posts

Re: browser refresh, viewstate and updatepanel problem

Apr 29, 2008 09:15 AM|LINK

Hi, I'm pretty sure this looks like the same problem I was having.

Check out my workaround I wrote up on my blog...

http://lachlankeown.blogspot.com/2008/04/firefox-refresh-viewstate-updatepanel.html

Cheers

Reply

danman1977

Member

10 Points

8 Posts

Re: browser refresh, viewstate and updatepanel problem

May 15, 2008 10:26 PM|LINK

HI lachlankeown, what you suggest is correct regarding changing the formid will fix the problem however using ASP.NET 3.5 C# setting the form ID the formID alwasy comes up as "aspnetForm" no matter where you specify it (Init, Load, PreRender etc), what we ended up doing is in the pageLoaded Ajax event is then changing both the forms id & name, and this seems to have fixed it...

Dan

Reply

lachlankeown

Member

12 Points

6 Posts

Re: browser refresh, viewstate and updatepanel problem

May 15, 2008 10:41 PM|LINK

Hi, thanks for the info. On further investigation it seems that this is the case when using a Master Page - you can't programmatically alter the form ID. You CAN alter it in a standard .aspx page. I'll add your workaround to my page, thanks!

Reply

pareshjagatiya

Member

516 Points

89 Posts

Re: browser refresh, viewstate and updatepanel problem

May 26, 2008 09:33 AM|LINK

This is surely the FireFox fields caching issue.

add this code into your page

protected override void OnPreInit(EventArgs e)
{

base.OnPreInit(e);

    if (Request.Browser.MSDomVersion.Major == 0) // If it is Non IE Browser
    {
    Response.Cache.SetNoStore();
    }

}

Always remember to click “Mark as Answer” on the post that helps you. Thank you!

- Regards,
Paresh Jagatia
http://pareshjagatia.blogspot.com

browser refresh, viewstate and updatepanel problem RSS

6 replies

poiuymn

browser refresh, viewstate and updatepanel problem

Server Error in '/' Application.

The state information is invalid for this page and might be corrupted.

Maheshpandian

Re: browser refresh, viewstate and updatepanel problem

poiuymn

Re: browser refresh, viewstate and updatepanel problem

lachlankeown

Re: browser refresh, viewstate and updatepanel problem

danman1977

Re: browser refresh, viewstate and updatepanel problem

lachlankeown

Re: browser refresh, viewstate and updatepanel problem

pareshjagatiya

Re: browser refresh, viewstate and updatepanel problem

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browser refresh, viewstate and updatepanel problem RSS

6 replies

browser refresh, viewstate and updatepanel problem

Server Error in '/' Application.

The state information is invalid for this page and might be corrupted.

Re: browser refresh, viewstate and updatepanel problem

Re: browser refresh, viewstate and updatepanel problem

Re: browser refresh, viewstate and updatepanel problem

Re: browser refresh, viewstate and updatepanel problem

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