A couple of small gems
I came across two little utilities today that have made my life easier (or, at least, the bits of my life spent in front of a JavaScript debugger!).
First, thanks to km0tion for his mozXPath scripts, that make porting IE-only XML code to run under Firefox that much easier.
Secondly, Firefox 1.5’s JS console now reports CSS as well as JS errors. I must be a lousy CSS writer, because my console floods with errors, making the JS ones hard to find. Well, today I found Console2 , a JS console replacement extension that allows filtering on the reported errors, including getting rid of those pesky CSS errors. So thanks to zeniko for taking the time to write that one too!
April 1st, 2006 at 7:13 pm
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
April 3rd, 2006 at 9:16 am
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
April 3rd, 2006 at 9:36 pm
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
May 3rd, 2007 at 6:53 am
Hello sir I want to use js validation on webcontrol of webuserControl of asp.net
please give me some tips
THANKS
Regards
Dev
May 4th, 2007 at 6:43 am
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