SQLServer中存储过程StoredProcedure创建及C#调用（转）

此文作为入门了解用，转自http://www.2cto.com/database/201502/378260.html

 

存储过程就是已经编译好的、优化过的放在数据库服务器中的一些SQL语句；可供应用程序直接调用。使用存储过程有以下几个优点： 
1、执行速度比普通的SQL语句快 
2、便于集中控制 
3、可以降低网络的通信量 
4、保证数据库的安全性和完整性 
5、灵活性

创建存储过程 
可以采用Transact-SQL语句来创建存储过程Stored Procedured。在Microsoft SQL Server Management Studio中Databases->Database Name->Programmability->Stored Procedures右键选择Stored Procedure就生成了一个创建存储过程的模板，修改其中的内容再执行就创建了Stored Procedured。

下面我首先以创建对表中插入数据的存储过程来为例。比如我的原始表是如下语句所创建的：

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<code class=" hljs sql">IF NOT EXISTS (SELECT * FROM sysobjects WHERE id = object_id(N'Persons') AND OBJECTPROPERTY(id,N'isUserTable') = 1)
CREATE TABLE Persons (Id_P int,LastName varchar(255),FirstName varchar(255),Address varchar(255),City varchar(255))</code>

Stored Procedure创建插入功能的SQL如下：

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<code class=" hljs sql">USE [databasename]
GO
/****** Object:  StoredProcedure [dbo].[insert_persions]    Script Date: 2/25/2015 11:14:11 AM ******/
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
IF OBJECT_ID ('insert_persons','p') IS NOT NULL
    DROP PROCEDURE insert_persons;
GO
-- =============================================
-- Author:      <Author,,Name>
-- Create date: <Create Date,,>
-- Description: <Description,,>
-- =============================================
CREATE PROCEDURE insert_persons
    -- Add the parameters for the stored procedure here
    @id int,
    @lastname varchar(255),
    @firstname varchar(255),
    @adress varchar(255),
    @city varchar(255)
AS
BEGIN
    -- SET NOCOUNT ON added to prevent extra result sets from
    -- interfering with SELECT statements.
    SET NOCOUNT ON;
 
    -- Insert statements for procedure here
    INSERT Persons (Id_P, LastName, FirstName, Address, City)
    VALUES (@id, @lastname, @firstname, @adress, @city)
END
GO</code>

以上代码完成了首先检查Stored Procedure是否存在，如果存在先把该Stored Procedure删掉，然后再创建该Stored Procedure。而其功能则是通过传入的参数，插入一条记录。直接点击Execute或者按F5则以上代码被执行，相应的数据库下面将有一个Stored Procedure名字为insert_persons。以SQL Server 2014为例，只要刷新相应的数据库，再到Programmability->Stored Procedures下面就发现多了个dbo.insert_persons。

执行存储过程 
在Stored Procedures下面找到相应的存储过程，点击右键选择Execute Stored Procedure…就可以产生一个新的对话框，填写输入的参数再点击OK就执行完毕。回去查看相应的表会发现多了一行数据。 
这里写图片描述

 

当然我们也可以通过SQL语句来执行存储过程。

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<code class=" hljs ruby">EXECUTE insert_persons 5,"Wang","San","Zhongguancun","Beijing"
EXECUTE insert_persons @id = 6,@firstname = "Wang",@lastname = "San",@adress = "Zhongguancun",@city = "Beijing"</code>

C#执行存储过程 
下面的代码比较简单的展示了如何利用C#来执行上面创建的存储过程：

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<code class=" hljs avrasm">            String conStr = @"Data Source=host\SQLEXPRESS;Initial Catalog=dbtan;Integrated Security=SSPI";
            SqlConnection con = new SqlConnection(conStr);
            try
            {
                con.Open();
                Console.WriteLine("Connect Sucess!");
 
                SqlCommand com = new SqlCommand();
                com.CommandType = System.Data.CommandType.StoredProcedure;
                com.Connection = con;
                com.CommandText = "insert_persons";
 
                SqlParameter pId = new SqlParameter("id", 10);
                SqlParameter pLastName = new SqlParameter("lastname", "last");
                SqlParameter pFirstName = new SqlParameter("firstname", "first");
                SqlParameter pAdress = new SqlParameter("adress", "pop");
                SqlParameter pCity = new SqlParameter("city", "Hangzhou");
 
                com.Parameters.Add(pId);
                com.Parameters.Add(pLastName);
                com.Parameters.Add(pFirstName);
                com.Parameters.Add(pAdress);
                com.Parameters.Add(pCity);
 
                com.ExecuteNonQuery();
            }
            catch (Exception e)
            {
                Console.WriteLine(e.ToString());
            }
            finally
            {
                con.Close();
            }
            Console.ReadKey();</code>
posted @ 2016-11-07 17:43  风谷逍遥客  阅读(634)  评论(0)    收藏  举报