Server Error in '/' Application.

Value cannot be null.
Parameter name: key

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.ArgumentNullException: Value cannot be null.
Parameter name: key

Source Error:


Line 104:    
Line 105:
Line 106:        If Cache(strUrlIntera) Is Nothing Then
Line 107:
Line 108:            Dim con2, conDati As New OleDb.OleDbConnection

Source File: E:\web\climatesto1\htdocs\city2.vb    Line: 106

Stack Trace:


[ArgumentNullException: Value cannot be null.
Parameter name: key]
   System.Web.Caching.CacheKey..ctor(String key, Boolean isPublic) +10033420
   System.Web.Caching.AspNetCache.Get(String key) +58
   System.Web.Caching.Cache.get_Item(String key) +29
   City2.VisualizzaPagina() in E:\web\climatesto1\htdocs\city2.vb:106
   City2.Page_Load(Object sender, EventArgs e) in E:\web\climatesto1\htdocs\city2.vb:33
   System.Web.UI.Control.OnLoad(EventArgs e) +97
   System.Web.UI.Control.LoadRecursive() +61
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +693


Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.8.4676.0