左侧提示如下：
Server Error in '/' Application.
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Object reference not set to an instance of an object.
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.NullReferenceException: Object reference not set to an instance of an object.
Source Error:
Line 53: {
Line 54: %>
Line 55: var Permissions="<%=System.Web.HttpContext.Current.Request.Cookies["master"].Values["Permissions"].ToString()%>";
Line 56: var LoginName="<%=System.Web.HttpContext.Current.Request.Cookies["Master"].Values["UserName"].ToString()%>";
Line 57: if(Permissions.indexOf("basic")>=0 || LoginName=="admin")
Source File: e:\xpqother\jfltest\gov_blue\gov_blue\master\left.aspx Line: 55
Stack Trace:
[NullReferenceException: Object reference not set to an instance of an object.]
ASP.master_left_aspx.__Render__control1(HtmlTextWriter __w, Control parameterContainer) in e:\xpqother\jfltest\gov_blue\gov_blue\master\left.aspx:55
System.Web.UI.Control.RenderChildrenInternal(HtmlTextWriter writer, ICollection children) +2065883
System.Web.UI.Control.RenderChildren(HtmlTextWriter writer) +24
System.Web.UI.Page.Render(HtmlTextWriter writer) +26
System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter) +25
System.Web.UI.Control.RenderControl(HtmlTextWriter writer, ControlAdapter adapter) +121
System.Web.UI.Control.RenderControl(HtmlTextWriter writer) +22
System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +1896
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Version Information: Microsoft .NET Framework Version:2.0.50727.42; ASP.NET Version:2.0.50727.42
