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應把.\sqlexpress 改為 .\sql2005 (示例) 并且把 User Instance=true 改為 User Instance=false

<connectionStrings>
<remove name="LocalSqlServer" />
<add name="LocalSqlServer" connectionString="data

source=.\SQL2005;Integrated

Security=SSPI;AttachDBFilename=|DataDirectory|aspnetdb.mdf

;User Instance=true"

providerName="System.Data.SqlClient"/>
<add name="classifiedsConnection"

connectionString="Data Source=SCEFHAO\SQL2005;Initial

Catalog=CLASSIFIEDSDB;User ID=sa;Password=hao123;"

providerName="System.Data.SqlClient"/>
</connectionStrings>

出現"此版本的sql server不支持用戶實例登陸標志"錯誤。應改為

User Instance=false;

以下為正確連接:
<connectionStrings>
<add name="classifiedsConnection"

connectionString="Data

Source=.\SQL2005;AttachDbFilename=|DataDirectory|classifie

dsdb.mdf;Integrated Security=True;User Instance=false"

providerName="System.Data.SqlClient"/>
<remove name="LocalSqlServer" />
<add name="LocalSqlServer" connectionString="data

source=.\SQL2005;Integrated

Security=SSPI;AttachDBFilename=|DataDirectory|aspnetdb.mdf

;User Instance=false"

providerName="System.Data.SqlClient"/>
<!-- <add name="classifiedsConnection"

connectionString="Data Source=SCEFHAO\SQL2005;Initial

Catalog=CLASSIFIEDSDB;User ID=sa;Password=hao123;"

providerName="System.Data.SqlClient"/>-->
</connectionStrings>

這樣就可以象操作access數據庫一樣操作sql2005的數據庫了,不過這樣程序運行時會自動在sql2005企業管理器自動生成以路徑命名的數據庫名(iis中無效,僅針對vs2008環境中).

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