classical geek

5 Comments

1. Might I suggest the FireBug firefox extension which you can use instead of the JS console, it even has support for debugging xmlHTTPRequests. Its invaluable.

   that and venkman debugger are two extensions I cannot live without for ajax development

   Jim

   Comment by Jim Plush — April 1, 2006 @ 7:13 pm

2. Hi,

   I need your help with this and I hope you can tell me what I must do to
   fix this.
   I have AJAXPRO setup and running fine with 3 linked dropdowns
   (countries,states,towns)
   I’m using this in the CreateUserWizard control, in a web user control,
   in a content page from a non-nested masterpage. I created a step called
   userprofile, added a text control Zip code/Postal town with a regex
   validation, added the 3 dropdown controls and it’s working fine getting
   the data with AJAXPRO BUT when I click the finish button or previous
   button it generates the following error:

   Invalid postback or callback argument. Event validation is enabled
   using in configuration or in a page. For security purposes,
   this feature verifies that arguments to postback or callback events
   originate from the server control that originally rendered them. If
   the data is valid and expected, use the
   ClientScriptManager.RegisterForEventValidation method in order to
   register the postback or callback data for validation.
   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.ArgumentException: Invalid postback or
   callback argument. Event validation is enabled using in configuration or in a page. For security purposes, this
   feature verifies that arguments to postback or callback events
   originate from the server control that originally rendered them. If
   the data is valid and expected, use the
   ClientScriptManager.RegisterForEventValidation method in order to
   register the postback or callback data for validation.

   Source Error:

   An unhandled exception was generated during the execution of the
   current web request. Information regarding the origin and location of
   the exception can be identified using the exception stack trace below.

   Stack Trace:

   [ArgumentException: Invalid postback or callback argument. Event
   validation is enabled using in
   configuration or in a page.
   For security purposes, this feature verifies that arguments to postback
   or callback events originate from the server control that originally
   rendered them. If the data is valid and expected, use the
   ClientScriptManager.RegisterForEventValidation method in order to
   register the postback or callback data for validation.]
   System.Web.UI.ClientScriptManager.ValidateEvent(String uniqueId,
   String argument) +367
   System.Web.UI.Control.ValidateEvent(String uniqueID, String
   eventArgument) +83
   System.Web.UI.WebControls.DropDownList.LoadPostData(String
   postDataKey, NameValueCollection postCollection) +89

   System.Web.UI.WebControls.DropDownList.System.Web.UI.IPostBackDataHandler.L­oadPostData(String
   postDataKey, NameValueCollection postCollection) +36
   System.Web.UI.Page.ProcessPostData(NameValueCollection postData,
   Boolean fBeforeLoad) +479
   System.Web.UI.Page.ProcessRequestMain(Boolean
   includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)
   +2549

   Comment by Jim — April 3, 2006 @ 9:16 am

3. Seconded, you *need* to install FireBug, and never look back. It does all the Ajax-related stuff you could only previously get if you had the JS console, Web Developer Toolbar, DOM Inspector and Live HTTP Headers open simultaneously.

   Oh, and you can log to it from JS with the printFire() call, and it has a commandline to evaluate JS statements.

   – Phil

   Comment by Phil McCarthy — April 3, 2006 @ 9:36 pm

4. Hello sir I want to use js validation on webcontrol of webuserControl of asp.net

   please give me some tips

   THANKS
   Regards
   Dev

   Comment by Devnarayan Yadav — May 3, 2007 @ 6:53 am

5. Hi, Dev,

   I’m not an expert with ASP.Net, I’m afraid - I don’t know if I can be much help.

   What sort of control are you trying to validate? Text? Numeric? Date? An entire form? Your question doesn’t give me much information to go on.

   One golden rule that I can offer - if you validate in the JavaScript, then make sure you validate again on the server, for security reasons.

   All the best,

   Dave

   Comment by dave — May 4, 2007 @ 6:43 am

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