.NET Tutorials, Forums, Interview Questions And Answers
Welcome :Guest
Sign In
Win Surprise Gifts!!!

Top 5 Contributors of the Month
Gaurav Pal
Post New Web Links

Scriptmanager.RegisterStartupScript Question

Posted By:      Posted Date: September 01, 2010    Points: 0   Category :ASP.Net
Hi,I registered a client script on a button click as ScriptManager.RegisterStartupScript(page, page.GetType(), "showFailure", "alert('123')", true);It shows me a javascript alert box '123'.Then I click another button and redirect to another page like Response.Redirect("SomeOtherPage.aspx");When I click back button (BROWSER BACK BUTTON) from SomeOtherPage.aspx then I again get an alert box 123.Reason: the script that I once registered is still on the page and is executed. I don't want the alert to appear again when I click browser back button.Regards,Muhammad Naveed Khan

View Complete Post

More Related Resource Links

ScriptManager.RegisterStartupScript is not working after post back

Hi,          I am registering javascript after page  post back using ScriptManager.RegisterStartupScript . it used to work previously. Ater there are some chagnes done in the project now it is not working. What might be the reason behind this. now i am unable to register the javascript after post back.Thanks and Regards,kiran

Modal Popup does not work with ScriptManager.RegisterStartupScript


Ok, here is my problem, I am using a masterpage that contains a javascript script (does not matter what it does) and on each page under that masterpage I am registering that script to run on page load. On the page under the masterpage, I am calling a modalpopupextender to display on a button click. Now, if I disable the register startupscript, the popup extender works fine, if I register the startup up script it does not

here is the script regster call

ScriptManager.RegisterStartupScript(Me, Me.GetType(), "addscript", "miscscript()", True)

I have also tried this

Page.ClientScript.RegisterStartupScript(Me.GetType(), "addScript", "miscscript()", True)

I had this working fine using the second example when using .net 4 and the Ajax toolkit for 4 but I am now having to rollback to 3.5 due to a vendor requirement.

any help would be appreciated as I am completely stumped by this behavior.

Here is a little bit of extra info:

If I put the script in page and not in the masterpage and just run with a window.onload, both work fine, which is why I have figured that it must be something that I am doing with the registration of the script.

When I say it does not matter what I put as the sript, I mean, it can be a complex element property adjustment or a simple alert, n

ScriptManager.RegisterStartupScript crashes with AJAX


I have a user control that needs a javascript function so I put my JS code in a variable and used the ScriptManager.RegisterStartupScript in Page_PreRender of the control as follows

        StringBuilder jscode = new StringBuilder();
        jscode.Append(@"<script language=javascript>");
        jscode.AppendLine(@"function MyFunc(x) {  {alert('hi');  }");
        if (ScriptManager.GetCurrent(base.Page).IsInAsyncPostBack)
            ScriptManager.RegisterStartupScript(this, this.GetType(), "MyFuncJSKey", jscode.ToString(), false);

The problem is,  after the PreRender returns, the page crashes. I dont see any crash screen saying "Unhandled exception occurred"

ScriptManager.RegisterStartUpScript in another class??


I am trying to do a ajvascript alert message box using :

ScriptManager.RegisterStartupScript(this, this.GetType(), "err_msg", "file_error()", true);

This works perfectly when the line above is put in the Page_Load of the page.  However, when it is in another class and the Page_Load calls the object function, it does not work.  I've stepped through the code and its as if it just ignores it.  There is no error.

Can anyone tell me how to get it to work in another class file?

I am doing this:

Page page = HttpContext.Current.Handler as Page;

ScriptManager.RegisterStartupScript(page, page.GetType(), "err_msg", "waveform_file_error()", true);

but it does not work... thanks

ScriptManager.RegisterStartupScript and dynamic javascript issue


Hi all,


On my project I have a WebUserControl (.ascx) inside a page (the ascx is added statically on the HTML of the page, not dynamically).


On the ascx, on Page_Load, I need to generate a dynamic javascript function, and at the end register it (I do this everytime the page loads, being or not a PostBack).


Something like this is created:


private string GetScript()


return "function doSomething(){}";



And what I do after this on Page_Load is:



What I'm facing is this:


I'm able to get this working ok on my machine (XP SP2 Pro, IIS 5.1, Framework 3.5) and on a test server (Server 2003 Web Edition, IIS 6, Framework 3.5).


But on a high availability environment (production server and environment, Server 2003 Web Edition, IIS6, Framework 3.5, the machines have the same machine.config, the web sites have the same web.config file) the first time the page/webusercontrol shows up this works fine. If I make a postback, the javascript does not work. No error is thrown, no exception, just there is

Some basic MVC question

  1. In regular asp net I can run (debug) the application but I can either "view in browser" that gives me the option to view the application and write code on same time.

In MVC I can't find this option.

  1. What is the basic DATA MODEL for working with SQL DB.

I mean with no any framework (entity framework, Sub sonic, Link to SQL etc')

I look for basic application that works with data but with no fw.

  1. What is the popular DB framework that working with data.
  2.  I am looking on  mvc series


C# Soup To Nuts  (the best series ever)


I watch some of the MVC video, seems that the music store is good but I have to wait to the other part.

Does any one know and recommend   a Microsoft MVC tutorial?





Web Site to Web Application Question


I've been building web sites and for my next project I will be creating a web application.  I use a 'BasePage' class in all my projects but, since web applications do not contain the 'App_Code' folder, what is the best place/practice for the 'BasePage' class?



connection string question from a newbie


when publishing  in the webmatrix dialogue it asks for "destination connection string" for my "database.mdf"

I was not sure what it was so I pasted this from my web.config file :

Data Source=.\SQLEXPRESS;AttachDbFilename=|DataDirectory|\database.mdf;Integrated Security=True;User Instance=True

it all published ok, but wont run, so I guess it has somthing to do with this connection string or some kind of configuration issue.

My question is this, What should go in the field for "Destination connection string"

Security Question Answer Retrieval


I know there is a method built in for retrieving the encrypted password, but how do I retrieve the encrypted security answer?

What I want to do is have a member profile update screen that the end user can update their password and security question and answer. However, when they get to this page, I want to already be showing the security question (the easy part) and its answer (the not so easy part).

I have updated web.config with passwordFormat=Encrypted and have added a machineKey with the generator (forgot the link, but located on eggheadcafe somewhere).

I haven't done ANYTHING yet, since I already have a user store with hashed information. I wanted to get some functionality done before publishing, wiping the store and recreating users (only a couple developers).


Very Basic Question - Error message running first page


Hi Everyone,

I am running Windows 7 and I have gone into Control Panel and activated all of the IIS Functions.

The web application I am running was downloaded from the net (and has worked on other machines previously).  Once I downloaded it, I moved it into C:/inetpub/wwwroot/code/main.asp

I am a bit of a novice at this!  But I am hoping someone can point me in the right direction!


I get the following error when I try and run the web application through IE:

"An error occurred on the server when processing the URL. Please contact the system administrator. If you are the system administrator please click here to find out more about this error."

(When i click the "click here" button it just goes to the IIS site).


Appreciate any help I can get!




C#, LINQ: (List<>) Question???


Hi Everyone,

I have a strange problem:


There is an entity (Table) called "Filters" in my .edmx which has all my tables and stuff in it (to use it for LINQ queries)

I have created a class called "CustomFilters" which inherits "Filters". So now my cutom class has all the properties of the original "Filters" class (table) and 1 more additional property that i wanted which is a List of "CustomFilters":

List<CustomFilters> children = new List<CustomFilters>();

Now i get all my records into:

List<CustomFilters> theOriginalList = new List<CustomFilters>();

NOTE: first all records are tken into a List<Filters> and then these are added into List<CustomFilters> where List<CustomFilters> for children of that record is added, and then children of the child records, and so on......

so now, every record is an instance of CustomFilters which has a property named "children" which is a list again; and each child again has instanaces of "CustomFilters", and each instance again has children...and on and on and on.....

(basiacally its a data source for a treeview in my silverlight control)

every thing is good and working as expected.


linqdatasource parameters question



I'm currently getting to know the linqdatasource control. What would happen if several WHERE parameters are added to the linqdatasource control declaritively in the aspx page but no WHERE clause is defined? 

1. is there any issue with setting up multiple WHERE parameters in the aspx markup for linqdatasource but then deciding which ones actually get used at runtime by setting the actual WHERE clause at run time? Would the unused parameters simply be ignored and cause no issues?

2. when you need to modify WHERE clause or WHERE parameters at runtime do you need to do so in an event handler? such as linqdatasource.selecting?
I see from the above link it is possible, but is that the standard way to handle controlling filtering in code behind for linqdatasource?

2b. if you use an event such as linqdatasource.selecting to add where parameters and/or modify the where clause in code will that also break the builtin sorting and paging support of the linqdatasource with a gridview? 

database interface design question


For handy database interface, is it good to use SqldataSources exclusively intead of EntLib functions?

Thanks for any feedback.

A Challenging Question for Advanced user....


Using  dot net How will you release .exe applicattion for 1000 clients.this question was asked by manager but i could not answer him.tell me if you can!!!

Question in Get method in C#


I got a recent working code from client.I see errors in the get methods when i compile , below are some place where the error happens.Can any one help me out?


Error 2 'System.Environment.NewLine.get': cannot explicitly call operator or accessor C:\Documents and Settings\shankar\My Documents\Visual Studio 2008\Projects\DKCLwin\DKCLwin\LocalizationAdmin.cs 150 170 DKCLwin

Error 2 'System.Environment.NewLine.get': cannot explicitly call operator or accessor C:\Documents and Settings\shankar\My Documents\Visual Studio 2008\Projects\DKCLwin\DKCLwin\LocalizationAdmin.cs 150 170

ASP.NET: ScriptManager Enables AJAX In Your Web Apps


Learn how to use the ScriptManager control, which provides much of the magic behind ASP.NET AJAX.

Ben Rush

MSDN Magazine September 2007

Silly sintax question


I'm just discovering MVC with Visual 2010 using MS Training kit.

Can somebody explain me why we can always seefor the index view

<h2><%=ViewData["Message"] %></h2>

And the code generated by visual studio

<h2><%: ViewData["Message"] %></h2>

Is there any difference between %= and %: with any document on that



ASP.NetWindows Application  .NET Framework  C#  VB.Net  ADO.Net  
Sql Server  SharePoint  Silverlight  Others  All   

Hall of Fame    Twitter   Terms of Service    Privacy Policy    Contact Us    Archives   Tell A Friend