①為什么要使用存儲過程?
因為它比SQL語句執(zhí)行快.

②存儲過程是什么?
把一堆SQL語句羅在一起,還可以根據(jù)條件執(zhí)行不通SQL語句.(AX寫作本文時觀點)

③來一個最簡單的存儲過程
CREATE PROCEDURE dbo.testProcedure_AX
AS
select userID from USERS order by userid desc

注:dbo.testProcedure_AX是你創(chuàng)建的存儲過程名,可以改為:AXzhz等,別跟關(guān)鍵字沖突就行了.AS下面就是一條SQL語句,不會寫SQL語句的請回避.

④我怎么在asp.net中調(diào)用這個存儲過程?
下面黃底的這兩行就夠使了.
        public static string GetCustomerCName(ref ArrayList arrayCName,ref ArrayList arrayID)
        {
            SqlConnection con=ADConnection.createConnection();
            SqlCommand cmd=new SqlCommand("testProcedure_AX",con);
            cmd.CommandType=CommandType.StoredProcedure;
            con.Open();
            try
            {
                SqlDataReader dr=cmd.ExecuteReader();
                while(dr.Read())
                {
                    if(dr[0].ToString()=="")
                    {
                        arrayCName.Add(dr[1].ToString());
                    }
                }
                con.Close();
                return "OK!";
            }
            catch(Exception ex)
            {
                con.Close();
                return ex.ToString();
            }
        }
注:其實就是把以前
SqlCommand cmd=new SqlCommand("select userID from USERS order by userid desc",con);
中的SQL語句替換為存儲過程名,再把cmd的類型標(biāo)注為CommandType.StoredProcedure(存儲過程)

⑤寫個帶參數(shù)的存儲過程吧,上面這個簡單得有點慘不忍睹,不過還是蠻實用的.
參數(shù)帶就帶兩,一個的沒面子,太小家子氣了.

CREATE PROCEDURE dbo.AXzhz
/*
這里寫注釋
*/
@startDate varchar(16),
@endDate varchar(16)
AS
 select id  from table_AX where commentDateTime>@startDate and commentDateTime<@endDate order by contentownerid DESC

注:@startDate varchar(16)是聲明@startDate 這個變量,多個變量名間用【,】隔開.后面的SQL就可以使用這個變量了.

⑥我怎么在ASP.NET中調(diào)用這個帶參數(shù)的存儲過程?

 public static string GetCustomerCNameCount(string startDate,string endDate,ref DataSet ds)
{
            SqlConnection con=ADConnection.createConnection();
//-----------------------注意這一段--------------------------------------------------------------------------------------------------------
            SqlDataAdapter da=new SqlDataAdapter("AXzhz",con);

            para0=new SqlParameter("@startDate",startDate);
            para1=new SqlParameter("@endDate",endDate);
            da.SelectCommand.Parameters.Add(para0);
            da.SelectCommand.Parameters.Add(para1);
            da.SelectCommand.CommandType=CommandType.StoredProcedure;
//-------------------------------------------------------------------------------------------------------------------------------

            try
            {
                con.Open();
                da.Fill(ds);
                con.Close();
                return "OK";
            }
            catch(Exception ex)
            {
                return ex.ToString();
            }           
        }

注:把命令的參數(shù)添加進(jìn)去,就OK了
鳥的,改字體顏色的東西太垃圾了,改不好,大家湊活著看.

⑦我還想看看SQL命令執(zhí)行成功了沒有.
注意看下面三行紅色的語句

CREATE PROCEDURE dbo.AXzhz
/*
  @parameter1 用戶名
  @parameter2 新密碼
*/
@passWord nvarchar(20),
@userName nvarchar(20)
AS
declare @err0 int
update WL_user set password=@password where UserName=@userName
set @err0=@@error
select  @err0 as err0

注:先聲明一個整型變量@err0,再給其賦值為@@error(這個是系統(tǒng)自動給出的語句是否執(zhí)行成功,0為成功,其它為失敗),最后通過select把它選擇出來,某位高人說可以通過Return返回,超出本人的認(rèn)知范圍,俺暫時不會,以后再補(bǔ)充吧

⑧那怎么從后臺獲得這個執(zhí)行成功與否的值呢?
下面這段代碼可以告訴你答案:
    public static string GetCustomerCName()
        {
            SqlConnection con=ADConnection.createConnection();
           
            SqlCommand cmd=new SqlCommand("AXzhz",con);
            cmd.CommandType=CommandType.StoredProcedure;
            para0=new SqlParameter("@startDate","2006-9-10");
            para1=new SqlParameter("@endDate","2006-9-20");
            da.SelectCommand.Parameters.Add(para0);
            da.SelectCommand.Parameters.Add(para1);
            con.Open();
            try
            {
               Int32 re=(int32)cmd.ExecuteScalar();
                con.Close();
                if (re==0)
                 return "OK!";
                else
                 return "false";
            }
            catch(Exception ex)
            {
                con.Close();
                return ex.ToString();
            }
        }
注:就是通過SqlCommand的ExecuteScalar()方法取回這個值,這句話是從MSDN上找的,俺認(rèn)為改成:
     int re=(int)cmd.ExecuteScalar();  99%正確,現(xiàn)在沒時間驗證,期待您的測試!!!

⑨我要根據(jù)傳入的參數(shù)判斷執(zhí)行哪條SQL語句!!~
下面這個存儲過程可以滿足我們的要求,竟然是Pascal/VB的寫法,Begin----End ,不是{},,,對使用C#的我來說,這個語法有點惡心.........

ALTER PROCEDURE dbo.selectCustomerCNameCount
@customerID int
AS
if @customerID=-1
 begin
 select contentownerid ,userCName,count(*) as countAll from view_usercomment group by contentownerid,userCName order by contentownerid DESC
 end
else
 begin
 select contentownerid ,userCName,count(*) as countAll from view_usercomment where contentownerid=@customerID group by contentownerid,userCName order by contentownerid DESC
 end

好了,俺的水平只止于此,也夠菜鳥們喝一壺的了,還有更多東西等著我們?nèi)グl(fā)現(xiàn),無盡的征途!!!!!!!!!!!

http://www.cnblogs.com/AXzhz/archive/2006/09/20/510007.html