First of all, check if you have registered the custom control correctly:
1. Make sure that the name of the assembly is WebControlLibrary1
. You should have WebControlLibrary1.dll
in the ~/bin
folder of the project.
2. Make sure that the name of the namespace is WebControlLibrary1
As for sending the third party control
, you need to archive the .dll
, open a new support ticket and attach the zip.
the Telerik team