将DB附加到SQL服务器:string.format问题 [英] Attach DB to SQL server: string.format problem

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问题描述

您好,

我正在尝试将exisitng数据库附加到SQL Server 2008.

当我使用时:

Hello,
I am trying to attach exisitng database to SQL Server 2008.
When I use:

str = String.Format("EXEC sp_attach_db @dbname = '{0}',@filename1 = '{1}',@filename2 = '{2}'", databaseName, mdfFile, ldfFile);
com = new SqlCommand(str, myConn);



我收到错误:无法打开物理文件C:\ Testst \ MyProgram_Data。中密度纤维板。操作系统错误2:2(未找到错误)。



我尝试过:



但是当我使用时:


I get an error: Unable to open the physical file "C:\TestDB\MyProgram_Data.mdf". Operating system error 2: "2(error not found)".

What I have tried:

But when I use:

str = "EXEC sp_attach_db @dbname = N'MyProgram' ,@filename1 = N'C:\\TestDB\\MyProgram\\MyProgram_Data.mdf',@filename2 = N'C:\\TestDB\\MyProgram\\MyProgram_Log.ldf'";



一切都好。



为什么我无法使用string.Format()?


Everything is OK.

Why I am not able to use string.Format()?

推荐答案

所以这个工作



So this works

C:\TestDB\MyProgram\MyProgram_Data.mdf





......这不是





...and this doesn't

C:\TestDB\MyProgram_Data.mdf





找出差价?



mdfFile和ldfFile没有与数据库所在位置匹配的正确值。



Spot the difference?

"mdfFile" and "ldfFile" do not have the correct values that match where your database is.


因为路径错误:

Because the path is wrong:
Unable to open the physical file "C:\TestDB\MyProgram_Data.mdf".

不起作用,但是:

Doesn't work, but:

str = "EXEC sp_attach_db @dbname = N'MyProgram' ,@filename1 = N'C:\\TestDB\\MyProgram\\MyProgram_Data.mdf'

。它有一个额外的文件夹名称:MyProgram

Does. It has an extra folder name in there: "MyProgram"


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