SQL 2005 执行SqlConnection的Open方法就报错~

[charlen]

SQL 2005 执行SqlConnection的Open方法就报错~
错误为 实例失败~~
这个是什么原因呢？

[孟子E章]

连接字符串的问题

[yixianggao]

SQL Server 服务没启动吧！

打开企业管理器找到相应数据库，保证服务已经起来后在试试看！

[babyrockxray]

可能是没有连接上数据库
检查你的连接字符串是不是正确？数据库服务启动没有？
身份验证对不对？

[yixianggao]

试了试也没见到实例失败的错误出来！

LZ 把详细错误信息都贴出来！包括堆栈信息！

[charlen]

连接字符串
<add name="MyConnection" connectionString="server=LEO-RGZNOFSUSE\\SQLEXPRESS;Initial Catalog=Ebus;Integrated Security=SSPI " providerName="System.Data.SqlClient"/>

异常详细信息:
System.InvalidOperationException: 实例失败。

堆栈跟踪:
[InvalidOperationException: 实例失败。]
System.Data.SqlClient.TdsParser.Connect(Boolean& useFailoverPartner, Boolean& failoverDemandDone, String host, String failoverPartner, String protocol, SqlInternalConnectionTds connHandler, Int64 timerExpire, Boolean encrypt, Boolean trustServerCert, Boolean integratedSecurity, SqlConnection owningObject, Boolean aliasLookup) +1804
System.Data.SqlClient.SqlInternalConnectionTds.OpenLoginEnlist(SqlConnection owningObject, SqlConnectionString connectionOptions, String newPassword, Boolean redirectedUserInstance) +606
System.Data.SqlClient.SqlInternalConnectionTds..ctor(DbConnectionPoolIdentity identity, SqlConnectionString connectionOptions, Object providerInfo, String newPassword, SqlConnection owningObject, Boolean redirectedUserInstance) +193
System.Data.SqlClient.SqlConnectionFactory.CreateConnection(DbConnectionOptions options, Object poolGroupProviderInfo, DbConnectionPool pool, DbConnection owningConnection) +501
System.Data.ProviderBase.DbConnectionFactory.CreatePooledConnection(DbConnection owningConnection, DbConnectionPool pool, DbConnectionOptions options) +28
System.Data.ProviderBase.DbConnectionPool.CreateObject(DbConnection owningObject) +429
System.Data.ProviderBase.DbConnectionPool.UserCreateRequest(DbConnection owningObject) +70
System.Data.ProviderBase.DbConnectionPool.GetConnection(DbConnection owningObject) +512
System.Data.ProviderBase.DbConnectionFactory.GetConnection(DbConnection owningConnection) +85
System.Data.ProviderBase.DbConnectionClosed.OpenConnection(DbConnection outerConnection, DbConnectionFactory connectionFactory) +89
System.Data.SqlClient.SqlConnection.Open() +160
CMyCon.GetCon() in c:\Documents and Settings\Administrator\桌面\HomeWork\E-Business\ASP.NET\App_Code\CMyCon.cs:28
admin.BTN_LOGIN_Click(Object sender, EventArgs e) in c:\Documents and Settings\Administrator\桌面\HomeWork\E-Business\ASP.NET\admin.aspx.cs:25
System.Web.UI.WebControls.Button.OnClick(EventArgs e) +75
System.Web.UI.WebControls.Button.RaisePostBackEvent(String eventArgument) +97
System.Web.UI.WebControls.Button.System.Web.UI.IPostBackEventHandler.RaisePostBackEvent(String eventArgument) +7
System.Web.UI.Page.RaisePostBackEvent(IPostBackEventHandler sourceControl, String eventArgument) +11
System.Web.UI.Page.RaisePostBackEvent(NameValueCollection postData) +33
System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +4919

[charlen]

同志们,帮帮忙啊~~`