how to retreve data using sp in crystal reprots

Question

Dear all,

 

 

I have a problem 

 

am developed a asp.net web application using asp.net 4.0 and sql express 2008 r2, entity freamework

 

but now i have a problem i have procedure in db that sp retreves the latest record from db to crystal report 

 

it is simply parameterles stored procdure 

 

now iam trying to get the report using crystal report viewer but here some problem is there 

 

its showing   

Error

Database logon failed.

so please suggest me  and if possible give me answer plaese