“/”应用程序中的服务器错误。

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行 27:     protected void Page_Load(object sender, EventArgs e)
行 28:     {
行 29:         NavClassList = new NavClassBLL().GetModelList("1=1 order by Sorts asc");
行 30:         
行 31: 

[Exception: 连接超时时间已到。在尝试使用预登录握手确认时超过了此超时时间。这可能是因为预登录握手失败或服务器未能及时响应。  尝试连接到此服务器时花费的持续时间是 - [Pre-Login] initialization=11；handshake=14997；]
   Maticsoft.DBUtility.DbHelperSQL.Query(String SQLString) +264
   XHR.DAL.NavClassDAL.GetList(String strWhere) in c:\Users\Administrator\Desktop\修改\4118ccm云顶集团\XHR.DAL\NavClassDAL.cs:257
   XHR.BLL.NavClassBLL.GetModelList(String strWhere) in c:\Users\Administrator\Desktop\修改\4118ccm云顶集团\XHR.BLL\NavClassBLL.cs:134
   _Default.Page_Load(Object sender, EventArgs e) in d:\wwwroot\paisennuosw\wwwroot\Default.aspx.cs:29
   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