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。

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