RE: Ajax Partial Post Backs.

Yasharth Tahiliani

Posted on 14/08/2015 11:45:15

Hi guys,

Do we know why I am unable to implement partial page post backs using a AJAX Update Panel in a Dynamic Web solution?

I have made sure that I have implemented everything correctly, also made sure that the functionality works fine on another page outside Dynamic Web.

However, as soon as I use it in my DW solution, it will not let me do partial postbacks and the page errors. I am attaching a copy of the User Control .ascx file, and a screen shot of the error that I receive.

Look forward to hearing on this.

Yash.

Search.ascx

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Yasharth Tahiliani

Posted on 14/08/2015 12:08:36

Looking at the Application Logs in the Event Viewer of the server, I see the following message:

3005
An unhandled exception has occurred.
14/08/2015 11:01:37
14/08/2015 10:01:37
d0ac5c06fd45411e90906b8c86b9a878
139
6
0
/LM/W3SVC/1/ROOT-1-130840186070182016
Full
/
C:\Dynamicweb.net\Application(8.6.11)\
NSTWEBUAT

2896
w3wp.exe
NT AUTHORITY\NETWORK SERVICE
NullReferenceException
Object reference not set to an instance of an object. at Dynamicweb.Database.SqlInjectionPrevent() at Dynamicweb.Frontend.GlobalAsaxHandler.Application_OnPreRequestHandlerExecute(Object sender, EventArgs e) at System.Web.HttpApplication.SyncEventExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously)
http://nstwebuat.int.rroom.net/Default.aspx?ID=130
/Default.aspx
10.15.100.145
NSTWEBUAT\nstwebadmin
True
Basic
NT AUTHORITY\NETWORK SERVICE
24
NT AUTHORITY\NETWORK SERVICE
False
at Dynamicweb.Database.SqlInjectionPrevent() at Dynamicweb.Frontend.GlobalAsaxHandler.Application_OnPreRequestHandlerExecute(Object sender, EventArgs e) at System.Web.HttpApplication.SyncEventExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously)

I tried disabling SQL Injection Check in the Security section of the CMS, but that does not change anything too.

Looking forward to your assistance on this!

Yash.

Nicolai Høeg Pedersen

Posted on 14/08/2015 12:14:42

My guess from the exception is that the ajax request you are requesting does not have a HTTP context, and it contains something from Dynamicweb that requires a http context.

That said - I recommend you to not use .ascx and AJAX Update Panel at all in the frontend. There are so many better and more modern options where you can actually control what happens...

BR Nicolai

Yasharth Tahiliani

Posted on 14/08/2015 12:16:58

Ok, so are you suggesting something like handling these things with Javascript?

Regards,

Yash.

Nicolai Høeg Pedersen

Posted on 14/08/2015 13:12:28

Yes, an ajax panel is also Javascript. But wrapped in asp.net controls.

Using i.e. JQuery directly is much more lean and it is easy to create ajax based responses from Dynamicweb.

Yasharth Tahiliani

Posted on 14/08/2015 13:16:24

Ok, thanks for the advice Nicolai, much appreciated!

Regards.

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RE: Ajax Partial Post Backs.

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