Do you always prefix SQL stored procedure names with the owner in ADO.NET code?

Stored procedure names in code should always be prefixed with the owner (usually dbo). This is because if the owner is not specified, SQL Server will look for a procedure with that name for the currently logged on user first, creating a performance hit.

SqlCommand sqlcmd = new SqlCommand(); sqlcmd.CommandText = "
                    proc_InsertCustomer" sqlcmd.CommandType
                    = CommandType.StoredProcedure; sqlcmd.Connection = sqlcon;

SqlCommand sqlcmd = new SqlCommand(); sqlcmd.CommandText = "
                     dbo.proc_InsertCustomer"; sqlcmd.CommandType
                     = CommandType.StoredProcedure; sqlcmd.Connection = sqlcon;

We have a program called SSW Code Auditor to check for this rule.