ADO.NET——获取output 和 return值

程序代码

//存储过程

//Create PROCEDURE MYSQL

//     @a int,

//     @b int

//AS

//     return @a + @b

//GO

SqlConnection conn = new SqlConnection(ConfigurationManager.ConnectionStrings["LocalSqlServer"].ToString());

conn.Open();

SqlCommand MyCommand = new SqlCommand("MYSQL", conn);

MyCommand.CommandType = CommandType.StoredProcedure;

MyCommand.Parameters.Add(new SqlParameter("@a", SqlDbType.Int));

MyCommand.Parameters["@a"].Value = 10;

MyCommand.Parameters.Add(new SqlParameter("@b", SqlDbType.Int));

MyCommand.Parameters["@b"].Value = 20;

MyCommand.Parameters.Add(new SqlParameter("@return", SqlDbType.Int));

MyCommand.Parameters["@return"].Direction = ParameterDirection.ReturnValue;

MyCommand.ExecuteNonQuery();

Response.Write(MyCommand.Parameters["@return"].Value.ToString());

程序代码

//存储过程

//Create PROCEDURE MYSQL

//     @a int,

//     @b int,

//     @c int output

//AS

//     Set @c = @a + @b

//GO

SqlConnection conn = new SqlConnection(ConfigurationManager.ConnectionStrings["LocalSqlServer"].ToString());

conn.Open();

SqlCommand MyCommand = new SqlCommand("MYSQL", conn);

MyCommand.CommandType = CommandType.StoredProcedure;

MyCommand.Parameters.Add(new SqlParameter("@a", SqlDbType.Int));

MyCommand.Parameters["@a"].Value = 20;

MyCommand.Parameters.Add(new SqlParameter("@b", SqlDbType.Int));

MyCommand.Parameters["@b"].Value = 20;

MyCommand.Parameters.Add(new SqlParameter("@c", SqlDbType.Int));

MyCommand.Parameters["@c"].Direction = ParameterDirection.Output;

MyCommand.ExecuteNonQuery();

Response.Write(MyCommand.Parameters["@c"].Value.ToString());