When I add the xxx.dll to GAC, like this :
C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC>gacutil.exe -i "C:\Users\
v-chewa\Documents\Visual Studio 2010\Projects\CallOutLookToSendMail\CallOutLookT
oSendMail\bin\Debug\CallOutLookToSendMail.dll"
And the question is appear :
Failure adding assembly to the cache: Administrator permissions are needed to use the selected ptions.Use an administrator command prompt to complete these tasks.
What should I do with this .please help me .