EF 存储过程

//create parameters to pass to the stored procedure  
//First input Parameter
var param1 = new SqlParameter { ParameterName = "@paramName1", 
SqlDbType = SqlDbType.Int, Direction = ParameterDirection.Input, Value = 1 }; 

//Second input parameter
var param2 = new SqlParameter { ParameterName = "@paramName2", 
SqlDbType = SqlDbType.VarChar, Direction = ParameterDirection.Input, Value = "Test Input" };                 

//third out parameter
var param3 = new SqlParameter { ParameterName = "@paramName3", 
SqlDbType = SqlDbType.VarChar, Direction = ParameterDirection.Output, Size = 255 }; 

//compose the SQL
var SQLString = "EXEC [dbo].[name of the Stored Proc] @paramName1, @paramName2, @paramName3"; 

//Execute the stored procedure 
var employees= DataContext.Employee.SqlQuery(SQLString, param1, param2, param3); 

//or you can execute the SP using below 
//var employees = DataContext.Database.SqlQuery<Employees>
(SQLString, param1, param2, param3)

Points of Interest

1. In the above sample, DataContext would be the name of your DataContext Instance variable
2. Employee would be name entity (POCO class) mapping to your database
3. If the resultset returned by the SP would be mapped to the IEnumerable collection of Entity - The above sample would return IEnumerable<Employee>
4. We can use <DataContext>.DataBase.SqlQuery method or <DataContext>.<EntityName>.SqlQuery
5. Your out param declared would have value returned by SP
6. The connect sting should have MARS = true - MultipleActiveResultSets=true