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

please give me some tips

THANKS
Regards
Dev

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

– Phil

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

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

Jim