因?yàn)橐话愣加肨-SQL來執(zhí)行數(shù)據(jù)庫(kù)操作，偶爾現(xiàn)在轉(zhuǎn)到用存儲(chǔ)過程，竟然寫不來調(diào)用過程的返回值了，查了很多資料，都不詳細(xì)，或者沒到點(diǎn)上，也許是我比較笨，呵呵。

C# 源代碼
 1         /// <summary>
 2         /// 校驗(yàn)用戶
 3         /// </summary>
 4         /// <param name="user">用戶信息</param>
 5         /// <returns></returns>
 6         public static int VerifyUser(clsUser user)
 7         {
 8             int iRet;
 9             string sql = String.Format("EXECUTE VerifyUser @myVerifyReader OUTPUT,'{0}','{1}'",user.username,user.passWord); //執(zhí)行的T-SQL串
10             SqlCommand scmd = new SqlCommand(sql, conn);
11             scmd.Parameters.Add(new SqlParameter("@myVerifyReader",SqlDbType.Int));
12             scmd.Parameters["@myVerifyReader"].Direction = ParameterDirection.Output;
13             //
14
15             DBOpen(conn);
16             //在返回值上有問題
17             scmd.ExecuteNonQuery();
18             iRet = (int)scmd.Parameters["@myVerifyReader"].Value;
19             DBClose(conn);
20             return iRet;
21         }
SQL SERVER存儲(chǔ)過程
------------------------------

/*
* VerifyUser 存儲(chǔ)過程
* 用途：驗(yàn)證用戶登陸
*/
CREATE PROCEDURE VerifyUser
(
    @myVerifyReader int OUTPUT, --返回結(jié)果
    @username varchar(50), --用戶名
    @userpassword varchar(50) --用戶密碼
)
AS
IF EXISTS(SELECT [id] FROM [Users] WHERE username = @username AND userpassword = @userpassword)
    SET @myVerifyReader = 0 --通過驗(yàn)證

ELSE IF EXISTS(SELECT [id] FROM [Users] WHERE username = @username)
    SET @myVerifyReader = 1 --用戶存在，密碼不正確
ELSE
    SET @myVerifyReader = 2 --用戶不存在

RETURN  isnull(@myVerifyReader,3)
-------------------------------------------------
GO