Issue with each control Type- or namespacename does not exist in namespace Syncfusion.JavaScript.Web

[Andre]

Hi,

I'd some issues as no WebControl had been shown in the toolbox in VS 2017 as described here:

https://www.syncfusion.com/forums/150321/syncfusion-toolbox-items-are-not-installed-in-visual-studio-2017

As the steps can't solve the issue I setup VS 2019 with result to have the same issue.

So I deinstall both versions of VS and install only VS 2019 new and later also the Web Form controls.

The controls are now available in the Toolbox and I can drag them in die designer but what control I try I ever get error that:

Type- or namespacename does not exist in namespace Syncfusion.JavaScript.Web

What can be wrong here and how to fix?

Thank you,

Andre

[Gowri Loganathan]

Hi Andre, 

Thanks for contacting Syncfusion Forum 

Query : Error - Type- or namespacename does not exist in namespace Syncfusion.JavaScript.Web 

The reported error will occur when we don’t refer the Syncfusion.EJ.Web.dll . To avoid the reported issue, we suggest you to refer both dlls (Syncfusion.EJ.Web & Syncfusion.EJ). 

Note : You can download the above mentioned dlls in the below location once installed your Build 

C:\Program Files (x86)\Syncfusion\Essential Studio\your version\ precompiledassemblies\your version\ 4.0 

 

Also ensure to refer assemblies and namespace in web.config file as shown in the below screenshot 

Please refer the below screenshot  

 

Kindly refer the below help documentation link 

https://help.syncfusion.com/aspnet/getting-started/manual-integration-of-syncfusion-aspnet-controls#registering-syncfusion-assemblies-within-the-webconfig 

Please get back to us, if you need more assistance 

Regards, 

Gowri V L.