C # use a stored procedure to return a dataset (sqlcommand-> dataset)

Use the stored procedure to return a dataset, sqlcommand-> sqldataadapter-> Dataset

sqlconnection userconnection = connection. getconnection ();
sqlcommand usercommand = new sqlcommand ("storepname", userconnection);
usercommand. commandtype = commandtype. storedprocedure; // Stored Procedure
usercommand. parameters. add ("@ PA", sqldbtype. varchar, 50); // Stored Procedure Parameter
usercommand. parameters ["@ PA"]. value = PA; // assign a value to the parameter
usercommand. connection. open ();
sqldataadapter adapter = new sqlda Taadapter (usercommand);
dataset DS = new dataset ();
adapter. fill (DS);
Any good methods can be posted to comments!