in my project i hv a update panel and all the control in update panel and as well as update panel tag underline with red tag and in tooltip its showing this msg
element is not a known This can occur if there is compilation error. when ever i run the application its working fine no probs with all but problem is that in my all pages ajax conrols are not reconized and when i drag any conrol in the page its doesnt take id and shows known elemnt or in any ajax conrol i drag standrd controls they also shows not known element any buddy plz can help me sory for bad english thank u
