Server Error in '/' Application.

Timeout expired.  The timeout period elapsed prior to obtaining a connection from the pool.  This may have occurred because all pooled connections were in use and max pool size was reached.

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.InvalidOperationException: Timeout expired.  The timeout period elapsed prior to obtaining a connection from the pool.  This may have occurred because all pooled connections were in use and max pool size was reached.

Source Error: 


Line 234:        //ÅжÏÊý¾Ý¿âÁ¬½Ó״̬
Line 235:        if (conn.State != ConnectionState.Open)
Line 236:            conn.Open();
Line 237:
Line 238:        cmd.Connection = conn;

Source File: f:\Cnjg_DotNet\App_Code\SqlHelper.cs    Line: 236

Stack Trace: 


[InvalidOperationException: Timeout expired.  The timeout period elapsed prior to obtaining a connection from the pool.  This may have occurred because all pooled connections were in use and max pool size was reached.]
   System.Data.ProviderBase.DbConnectionFactory.GetConnection(DbConnection owningConnection) +5065241
   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 f:\Cnjg_DotNet\App_Code\SqlHelper.cs:236
   SqlHelper.ExecuteReader(String connectionString, CommandType cmdType, String cmdText, SqlParameter[] commandParameters) in f:\Cnjg_DotNet\App_Code\SqlHelper.cs:132
   index1.Page_Load(Object sender, EventArgs e) in f:\Cnjg_DotNet\index.aspx.cs:42
   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