C#获取存储过程返回值和输出参数值的方法

1.获取return返回值

//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());

2.获取output输出参数值

//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());

c#接收存储过程返回值:

     public static int user_add(user us)
     {
         int iret;
         sqlconnection conn = new sqlconnection(conn_str);
         sqlcommand cmd = new sqlcommand("user_add", conn);
         cmd.commandtype = commandtype.storedprocedure;
         cmd.parameters.addwithvalue("@uname", us.uname);
         cmd.parameters.addwithvalue("@upass", us.upass);
         cmd.parameters.addwithvalue("@passquestion", us.passquestion);
         cmd.parameters.addwithvalue("@passkey", us.passkey);
         cmd.parameters.addwithvalue("@email", us.email);
         cmd.parameters.addwithvalue("@rname", us.rname);
         cmd.parameters.addwithvalue("@area", us.area);
         cmd.parameters.addwithvalue("@address", us.address);
         cmd.parameters.addwithvalue("@zipcodes", us.zipcodes);
         cmd.parameters.addwithvalue("@phone", us.phone);
         cmd.parameters.addwithvalue("@qq", us.qq);
         cmd.parameters.add("@return_value", "").direction = parameterdirection.returnvalue;      
         try
         {
             conn.open();
             cmd.executenonquery();
             iret = (int)cmd.parameters["@return_value"].value;
         }
         catch (sqlexception ex)
         {
             throw ex;
         }
         finally
         {
             conn.close();
         }
         return iret;
     }

c#接收存储过程输出参数:

    public static decimal cart_useramount(int uid)
    {
        decimal iret;
        sqlconnection conn = new sqlconnection(conn_str);
        sqlcommand cmd = new sqlcommand("cart_useramount", conn);
        cmd.commandtype = commandtype.storedprocedure;
        cmd.parameters.addwithvalue("@uid", uid);
        cmd.parameters.add("@amount", sqldbtype.decimal).direction=parameterdirection.output;
        try
        {
            conn.open();
            cmd.executenonquery();
            iret = (decimal)cmd.parameters["@amount"].value;
        }
        catch (sqlexception ex)
        {
            throw ex;
        }
        finally
        {
            conn.close();
        }
        return iret;
    }