“/”应用程序中的服务器错误。

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行 22:                        new SqlParameter("@ID", nid) 
行 23:                                       };
行 24:         bool urlink = BLLhelp.Exists("news", "ID=@ID", parameters10);
行 25:         if (urlink)
行 26:         {

[InvalidOperationException: 超时时间已到。超时时间已到，但是尚未从池中获取连接。出现这种情况可能是因为所有池连接均在使用，并且达到了最大池大小。]
   System.Data.ProviderBase.DbConnectionFactory.TryGetConnection(DbConnection owningConnection, TaskCompletionSource`1 retry, DbConnectionOptions userOptions, DbConnectionInternal oldConnection, DbConnectionInternal& connection) +343
   System.Data.ProviderBase.DbConnectionInternal.TryOpenConnectionInternal(DbConnection outerConnection, DbConnectionFactory connectionFactory, TaskCompletionSource`1 retry, DbConnectionOptions userOptions) +156
   System.Data.ProviderBase.DbConnectionClosed.TryOpenConnection(DbConnection outerConnection, DbConnectionFactory connectionFactory, TaskCompletionSource`1 retry, DbConnectionOptions userOptions) +22
   System.Data.SqlClient.SqlConnection.TryOpenInner(TaskCompletionSource`1 retry) +92
   System.Data.SqlClient.SqlConnection.TryOpen(TaskCompletionSource`1 retry) +219
   System.Data.SqlClient.SqlConnection.Open() +101
   Maticsoft.DBUtility.DbHelperSQL.PrepareCommand(SqlCommand cmd, SqlConnection conn, SqlTransaction trans, String cmdText, SqlParameter[] cmdParms) in D:\c程序源文件\m模板调试\新后台_国内\SQL底层\CodematicDemo\DBUtility\DbHelperSQL.cs:866
   Maticsoft.DBUtility.DbHelperSQL.GetSingle(String SQLString, SqlParameter[] cmdParms) in D:\c程序源文件\m模板调试\新后台_国内\SQL底层\CodematicDemo\DBUtility\DbHelperSQL.cs:786
   Maticsoft.DBUtility.DbHelperSQL.Exists(String strSql, SqlParameter[] cmdParms) in D:\c程序源文件\m模板调试\新后台_国内\SQL底层\CodematicDemo\DBUtility\DbHelperSQL.cs:104
   Maticsoft.DAL.publicHelp.Exists(String table, String conditionalStatement, SqlParameter[] parameters) in D:\c程序源文件\m模板调试\新后台_国内\SQL底层\CodematicDemo\DAL\publicHelp.cs:454
   Maticsoft.BLL.publicHelp.Exists(String table, String conditionalStatement, SqlParameter[] parameters) in D:\c程序源文件\m模板调试\新后台_国内\SQL底层\CodematicDemo\BLL\publicHelp.cs:127
   index_incx_newsshow.Page_Load(Object sender, EventArgs e) in c:\web\decor1688.com\index\incx\newsshow.aspx.cs:24
   System.Web.Util.CalliEventHandlerDelegateProxy.Callback(Object sender, EventArgs e) +52
   System.Web.UI.Control.OnLoad(EventArgs e) +97
   System.Web.UI.Control.LoadRecursive() +61
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +693