Issue with EventHandler when using QxDOTNET with .NET 4.5

[Kiran]

Hi,

At the outset, thanks for creating QxDotnet. I find QooxDoo very useful and has a very rich set of UI controls.

I currently use QxDotNet for my project. Below are details of my Dev environment:
.NET Version: 4.5
IDE: Visual Studio 2013 Premium

The UI gets created fine but the issue I am facing is that, when I click on a button (i.e when the EventHandler method is invoked) the processing icon keeps rotating and then nothing happens.
This happens only when I select .NET framework 4.5

It seems to work fine with .NET 3.5 but I need to use 4.5 as there are some other dependencies.

Could you please suggest a fix for this issue or a work around?

Thanks and Regards,
Kiran

[yurik-z]

Hi, Kiran!
Version 0.2 compiled in 2012. Since that moment some bugs was fixed and committed.
I can’t promise that I release a new version right now. So I suggest you to make a checkout of source code and compile latest version.
To build qxdotnet from sources you will need to download ActivePython and Qooxdoo SDK v3.5 (see readme.txt)
If you have a problem compiling qxdotnet feel free to write me.
Best wishes,
Yuri

[Kiran]

Yuri,

Thanks for the prompt response.

I downloaded the source and built it locally in Debug mode.

Now when I run my app, I could see the error which is given below:

"A potentially dangerous Request.Form value was detected from the client (ev=\"<ev><e _id=\"6\" _n=\"e...\")."</ev>

Stack Trace:
StackTrace:
at System.Web.HttpRequest.ValidateString(String value, String collectionKey, RequestValidationSource requestCollection)
at System.Web.HttpRequest.ValidateHttpValueCollection(HttpValueCollection collection, RequestValidationSource requestCollection)
at System.Web.HttpRequest.get_Form()
at System.Web.HttpRequest.FillInParamsCollection()
at System.Web.HttpRequest.GetParams()
at System.Web.HttpRequest.get_Params()
at qxDotNet.Common.ClientHandler.ProcessRequest(HttpContext context)
at System.Web.HttpApplication.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute()
at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously)

Do you know how to fix this issue?

Regards,
Kiran

[yurik-z]

I found a solution here:
http://www.codeproject.com/Tips/297679/A-potentially-dangerous-Request-Form-value-was-det
You will need to modify your web.config.
<httpruntime requestvalidationmode="2.0"> must be added to <system.web> section.</system.web></httpruntime>

[Kiran]

Yuri,

Many Thanks, that worked.

Regards,
Kiran