Telerik not working

Question

Hi

I am new in web development.

I used telerik control in my project.

actually work on project which is develop in VS 10 and MVC 2

now i open that Project in VS 12 and MVC 4. I have done related

changes in Web.Config file.

but now i get an error in master page like

"Value cannot be null. Parameter name: item"

in this code

<%= Html.Telerik().StyleSheetRegistrar()
.DefaultGroup(group => group.Add("telerik.common.css")
.Add("telerik.vista.css")
)
%>

I search out in google but i dont understand what actually error says.

Please help me to solve out this error.

Thanks in advance.

Pranav Shah · Answer

Thankyou Maulishankar I will do it.

Muralishankar Sundaram · Answer

Hi Pranav, the message represents that you have passed wrong parameter to the helper methods, so please post those details in telerik community forum and they will share the solution regarding the error. Regards, Muralishankar

Pranav Shah · Answer

hi Maulishankar i have already update telerik.Web.Mvc dll with latest version v4.0.30319 also i update in web config file from mvc ver 2 with mvc ver 4. project successfully run but error in this code "Value cannot be null. Parameter name: item" in this code .DefaultGroup(group => group.Add("telerik.common.css") .Add("telerik.vista.css") ) %> i don not understand where i am wrong. please help me.

Muralishankar Sundaram · Answer

Hi Pranav, Yes, have to change the referred DLL to Telerik-MVC4. and you need to do some version changes in Main web.config. Regards, Muralishankar

Pranav Shah · Answer

I check this http://www.telerik.com/support . and now they are changes with Kendo UI for MVC 4. but i used telerik at that time in MVC 2. should i replace all things with Kendo UI in MVC 4 ?

Sibeesh Venu · Answer

Hi, Have you checked in telerik support channel? http://www.telerik.com/support . If not please ask them whether there is any new release available!.