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VB调用存储过程的例子 前言
(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
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