自动将存储过程转成C#代码的过程
一个国外程序员写的自动将存储过程转成C#源码的存储过程。我没有作任何的更改﹐原版贴在这里﹐希望对有些人能够有所帮助:
CREATE PROCEDURE dbo.tools_CS_SPROC_Builder
(
@objName nvarchar(100)
)
AS
/*
___________________________________________________________________
Name: CS SPROC Builder
Version: 1
Date: 20/06/2004
Author: Paul McKenzie
Description: Call this stored procedue passing the name of your
database object that you wish to insert/update
from .NET (C#) and the code returns code to copy
and paste into your application. This version is
for use with "Microsoft Data Application Block".
Sample:
EXEC tools_CS_SPROC_Builder 'InsertSQL'
*/
SET NOCOUNT ON
DECLARE @parameterCount int
DECLARE @errMsg varchar(100)
DECLARE @parameterAt varchar(1)
DECLARE @connName varchar(100)
SET @connName='conn.Connection'
SET @parameterAt=''
SELECT
dbo.sysobjects.name AS ObjName,
dbo.sysobjects.xtype AS ObjType,
dbo.syscolumns.name AS ColName,
dbo.syscolumns.colorder AS ColOrder,
dbo.syscolumns.length AS ColLen,
dbo.syscolumns.colstat AS ColKey,
dbo.systypes.xtype
INTO #t_obj
FROM
dbo.syscolumns INNER JOIN
dbo.sysobjects ON dbo.syscolumns.id = dbo.sysobjects.id INNER JOIN
dbo.systypes ON dbo.syscolumns.xtype = dbo.systypes.xtype
WHERE
(dbo.sysobjects.name = @objName)
AND
(dbo.systypes.status <> 1)
ORDER BY
dbo.sysobjects.name,
dbo.syscolumns.colorder
SET @parameterCount=(SELECT count(*) FROM #t_obj)
IF(@parameterCount<1) SET @errMsg='No Parameters/Fields found for ' + @objName
IF(@errMsg is null)
BEGIN
PRINT 'try'
PRINT ' {'
PRINT ' SqlParameter[] paramsToStore = new SqlParameter[' + cast(@parameterCount as varchar) + '];'
PRINT ''
DECLARE @source_name nvarchar,@source_type varchar,@col_name nvarchar(100),@col_order int,@col_type varchar(20),@col_len int,@col_key int,@col_xtype int,@col_redef varchar(20)
DECLARE cur CURSOR FOR
SELECT * FROM #t_obj
OPEN cur
-- Perform the first fetch.
FETCH NEXT FROM cur
INTO @source_name,@source_type,@col_name,@col_order,@col_len,@col_key,@col_xtype
if(@source_type=N'U') SET @parameterAt='@'
-- Check @@FETCH_STATUS to see if there are any more rows to fetch.
WHILE @@FETCH_STATUS = 0
BEGIN
SET @col_redef=(SELECT
CASE @col_xtype
WHEN 34 THEN 'Image'
WHEN 35 THEN 'Text'
WHEN 48 THEN 'TinyInt'
WHEN 52 THEN 'SmallInt'
WHEN 56 THEN 'Int'
WHEN 58 THEN 'SmallDateTime'
WHEN 59 THEN 'Real'
WHEN 60 THEN 'Money'
WHEN 61 THEN 'DateTime'
WHEN 62 THEN 'Float'
WHEN 99 THEN 'NText'
WHEN 104 THEN 'Bit'
WHEN 106 THEN 'Decimal'
WHEN 122 THEN 'SmallMoney'
WHEN 127 THEN 'BigInt'
WHEN 165 THEN 'VarBinary'
WHEN 167 THEN 'VarChar'
WHEN 173 THEN 'Binary'
WHEN 175 THEN 'Char'
WHEN 231 THEN 'NVarChar'
WHEN 239 THEN 'NChar'
ELSE '!MISSING'
END AS C)
--Write out the parameter
PRINT ' paramsToStore[' + cast(@col_order-1 as varchar)
+ '] = new SqlParameter("' + @parameterAt + @col_name
+ '", SqlDbType.' + @col_redef
+ ');'
--If the type is a string then output the size declaration
IF(@col_xtype=231)OR(@col_xtype=167)OR(@col_xtype=175)OR(@col_xtype=99)OR(@col_xtype=35)
BEGIN
PRINT ' paramsToStore[' + cast(@col_order-1 as varchar)
+ '].Size=' + cast(@col_len as varchar) + ';'
END
PRINT ' paramsToStore['+ cast(@col_order-1 as varchar)
+ '].Value = ;'
-- This is executed as long as the previous fetch succeeds.
FETCH NEXT FROM cur
INTO @source_name,@source_type,@col_name,@col_order,@col_len,@col_key,@col_xtype
END
PRINT ''
PRINT ' SqlHelper.ExecuteNonQuery(' + @connName + ', CommandType.StoredProcedure,"' + @objName + '", paramsToStore);'
PRINT ' }'
PRINT 'catch(Exception excp)'
PRINT ' {'
PRINT ' }'
PRINT 'finally'
PRINT ' {'
PRINT ' ' + @connName + '.Dispose();'
PRINT ' ' + @connName + '.Close();'
PRINT ' }'
CLOSE cur
DEALLOCATE cur
END
if(LEN(@errMsg)>0) PRINT @errMsg
DROP TABLE #t_obj
SET NOCOUNT ON
GO