怎样写一个存储过程类来实现C#中对存储过程的调用？

A: 假设数据表为UserDataStore，存储过程InsertUserData如下：

CREATE PROCEDURE InsertUserData
@UserName NVARCHAR(50) = NULL,
@UserInfo NVARCHAR(4000) = NULL

AS
SET XACT_ABORT ON
BEGIN TRANSACTION
INSERT INTO [UserDataStore]
VALUES (@UserName,@UserInfo)
COMMIT TRANSACTION
RETURN 0
GO

则相应的程序为：

...

public bool InsertUserData(DataSet userData) 
{ 
    OleDbCommand insertCommand=new OleDbCommand("InsertUserData",dsConnection); 
    insertCommand.CommandType=CommandType.StoredProcedure; 
    insertCommand.Parameters.Add("@UserName",OleDbType.VarWChar,50,"UserName"); 
    insertCommand.Parameters.Add("@UserInfo", OleDbType.VarWChar,4000,"UserInfo"); 
    dsCommand.InsertCommand=insertCommand; 
    try 
    { 
        dsCommand.InsertCommand=this.GetInsertCommand(); 
        dsCommand.Update(userData,"UserDataStore"); 
        userData.AcceptChanges(); 
        return (true); 
    } 
    catch(Exception e) 
    { 
        throw e; 
    }