Asp.net project hosting error

Dear sir

I hosted my project but it is not working properly

Error

Compilation Error Description: An error occurred during the compilation of a resource required to service this request. Please review the following specific error details and modify your source code appropriately. Compiler Error Message: CS1061: 'ASP.user_signin_aspx' does not contain a definition for 'Button1_Click' and no extension method 'Button1_Click' accepting a first argument of type 'ASP.user_signin_aspx' could be found (are you missing a using directive or an assembly reference?)