how to pass parameter to crystal report in asp.net

hi all,

i am using asp.net 2010 and crystal report 13

i am using crysyal report command in crystal reporta

that command contains parameter in where condition

i want to pass the value to the parameter from my program

but when i run the report it prompts the value, but i need to pass the value from my textbox control

please slove this issue.

Thanks,

Murali.