Error “‘Sys’ is undefined” in Asp.Net Ajax
Posted by triaslama on November 29, 2008
Wondering why, I search in internet and hope that I will find one of the solution. After several trial and error finally I can find the solution and it work just fine for me.
To solve the error we need to modify web.config file, add the following under <system.web />
Nothing more I can say, but if you get the same error when you work with ASP.NET Ajax try the above solution, and I hope this help.