sitefinity-5

问题 I am using Sitefinity 11. I have created a Custom Widget for News Module, having Drop down for all available Categories, where I need to filter the News for Selected Category. The Control postback's but it's SelectedIndex is always ZERO. I have checked the checkbox for "Enable View State for this page" and Page is using custom Layout Template. The code in my .aspx file is given below: <%@ Control Language="C#" %> <%@ Import Namespace="Telerik.Sitefinity.Modules.News" %> <%@ Import Namespace=

问题 Any thoughts about how to resolve this error? I'm stuck at the moment and having a hard time finding reading on this. Any help would be greatly appreciated: Server Error in '/www' Application. Type is not resolved for member 'Microsoft.IdentityModel.Claims.ClaimsPrincipal,Microsoft.IdentityModel, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35'. Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for