Server Error in '/' Application.

A network-related or instance-specific error occurred while establishing a connection to SQL Server. The server was not found or was not accessible. Verify that the instance name is correct and that SQL Server is configured to allow remote connections. (provider: Named Pipes Provider, error: 40 - Could not open a connection to SQL Server)

Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: System.Data.SqlClient.SqlException: A network-related or instance-specific error occurred while establishing a connection to SQL Server. The server was not found or was not accessible. Verify that the instance name is correct and that SQL Server is configured to allow remote connections. (provider: Named Pipes Provider, error: 40 - Could not open a connection to SQL Server)

Source Error:


Line 233:        {
Line 234:            if (conn.State != ConnectionState.Open)
Line 235:                conn.Open();
Line 236:
Line 237:            cmd.Connection = conn;

Source File: d:\wwwroot\NET\hnjiudian\wwwroot\App_Code\SqlHelper.cs    Line: 235

Stack Trace:


[SqlException (0x80131904): A network-related or instance-specific error occurred while establishing a connection to SQL Server. The server was not found or was not accessible. Verify that the instance name is correct and that SQL Server is configured to allow remote connections. (provider: Named Pipes Provider, error: 40 - Could not open a connection to SQL Server)]
   System.Data.ProviderBase.DbConnectionPool.GetConnection(DbConnection owningObject) +1019
   System.Data.ProviderBase.DbConnectionFactory.GetConnection(DbConnection owningConnection) +108
   System.Data.ProviderBase.DbConnectionClosed.OpenConnection(DbConnection outerConnection, DbConnectionFactory connectionFactory) +126
   System.Data.SqlClient.SqlConnection.Open() +125
   SqlHelper.PrepareCommand(SqlCommand cmd, SqlConnection conn, SqlTransaction trans, CommandType cmdType, String cmdText, SqlParameter[] cmdParms) in d:\wwwroot\NET\hnjiudian\wwwroot\App_Code\SqlHelper.cs:235
   SqlHelper.ExecuteScalar(CommandType cmdType, String cmdText, SqlParameter[] commandParameters) in d:\wwwroot\NET\hnjiudian\wwwroot\App_Code\SqlHelper.cs:191
   PicShow.BindLeftMenu(Int32 styleID, String ctype) in d:\wwwroot\NET\hnjiudian\wwwroot\PicShow.aspx.cs:113
   PicShow.Page_Load(Object sender, EventArgs e) in d:\wwwroot\NET\hnjiudian\wwwroot\PicShow.aspx.cs:67
   System.Web.Util.CalliHelper.EventArgFunctionCaller(IntPtr fp, Object o, Object t, EventArgs e) +14
   System.Web.Util.CalliEventHandlerDelegateProxy.Callback(Object sender, EventArgs e) +35
   System.Web.UI.Control.OnLoad(EventArgs e) +91
   System.Web.UI.Control.LoadRecursive() +74
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +2207


Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.0.30319.1