正文

VB调用存储过程的例子2005-06-26 13:38:00

【评论】 【打印】 【字体: 】 本文链接:http://blog.pfan.cn/leafage/2124.html

分享到:

 VB调用存储过程的例子 前言 类型:转载 (说明:以下代码摘自微软的MSDN,经过测试没问题。)          VB调用存储过程的方法很多,如利用ADO对象的Recordset.Open方法,ADO对象的Connection.Excute方法等,都可以获得记录集信息。本主题讨论的是使用Parameter对象调用存储过程,而且可以获得许多意外的信息。 首先需要在Sql Server中建立一个存储过程。请确定已安装了Sql Server 2000的任何版本,且含有Pubs数据库。 打开“查询分析器”,启动你本地的SqlServer,然后将以下的Sql语句Copy到所打开的查询编辑框中。按下“F5”键。OK,存储过程ADOTestRPE便生成了。 Use Pubs       GO       if exists (select * from sysobjects where id =         object_id('dbo.ADOTestRPE') and sysstat & 0xf = 4)       drop procedure dbo.ADOTestRPE GO       create procedure ADOTestRPE       (       @SetRtn  INT=0 OUTPUT,       @R1Num   INT=1,       @P1Num   INT=1,       @E1Num   INT=1,       @R2Num   INT=2,       @P2Num   INT=2,       @E2Num   INT=2       )       AS       DECLARE @iLoop     INT       DECLARE @PrintText VARCHAR(255)       DECLARE @iErrNum   INT       /*   Check for no Resultsets - needed to get the RETURN value back */       IF @R1Num + @R2Num = 0 SELECT NULL       /*   Resultset 1  ******************************* */       IF @R1Num > 0       BEGIN          SET ROWCOUNT @R1Num          SELECT 'Resultset 1' RsNum, Title          FROM Pubs..Titles          SET ROWCOUNT 0       End          /* Must raise a default error context in which to return the PRINT */         /*  statement */        /* (if none present) since PRINT statements are a severity level of */       /*0. */       IF (@P1Num > 0) AND (@E1Num = 0) RAISERROR ("RAISERROR.PError1",          11, 2)       IF @P1Num > 0       BEGIN          SELECT @iLoop = 0          WHILE @iLoop < @P1Num          BEGIN             SELECT @iLoop = @iLoop + 1             SELECT @PrintText = 'PRINT.Resultset.1: Line ' +       CONVERT(char(2), @iLoop)          PRINT @PrintText         End       End       IF @E1Num > 0       BEGIN          SELECT @iLoop = 0          WHILE @iLoop < @E1Num          BEGIN             SELECT @iLoop = @iLoop + 1             SELECT @iErrNum = @iLoop + 201000             RAISERROR ("RAISERROR.Resultset.1", 11, 2)          End       End       /*   Resultset 2  ******************************* */       IF @R2Num > 0       BEGIN          SET ROWCOUNT @R2Num          SELECT 'Resultset 2' RsNum, Title          FROM Pubs..Titles          SET ROWCOUNT 0       End       /* Must raise a default error context in which to return the PRINT */       /*  statement */       /* (if none present) since PRINT statements are a severity level of */       /*  0. */       IF (@P2Num > 0) AND (@E2Num = 0) RAISERROR ("RAISERROR.PError2",       11, 2)       IF @P2Num > 0       BEGIN          SELECT @iLoop = 0          WHILE @iLoop < @P2Num          BEGIN             SELECT @iLoop = @iLoop + 1             SELECT @PrintText = 'PRINT.Resultset.2: Line ' +        CONVERT(char(2), @iLoop)             PRINT @PrintText          End       End       IF @E2Num > 0       BEGIN          SELECT @iLoop = 0          WHILE @iLoop < @E2Num          BEGIN             SELECT @iLoop = @iLoop + 1             SELECT @iErrNum = @iLoop + 202000             RAISERROR ("RAISERROR.Resultset.2", 11, 2)          End       End       /*   Return & Output ************************************ */       select @SetRtn = -1       RETURN @SetRtn GO      运行完毕后,若不存在任何错误,请关闭“查询分析器”,然后继续下面的操作。否则可能是你的Sql Server 2000没有安装正确或Copy时出了问题。 打开VB6.0,新建一个工程,默认有一个窗体Form1(若没有请添加一个新的窗体,命名为Form1),在该窗体中添加一个CommandButton。保存该工程。

阅读(4850) | 评论(0)


版权声明:编程爱好者网站为此博客服务提供商,如本文牵涉到版权问题,编程爱好者网站不承担相关责任,如有版权问题请直接与本文作者联系解决。谢谢!

评论

暂无评论
您需要登录后才能评论,请 登录 或者 注册