For testing an one sample control, just I had copied source code of the client control (client.ascx) as client page (client.aspx) to website1. And also I copied all the related source code files (controller) to App_Code in Website1 with related DNN references.

When I run the client page from Website1 on Visual Studio, it throws error as

[NullReferenceException: Object reference not set to an instance of an object.]

DotNetNuke.Framework.Reflection.CreateObject(String ObjectProviderType, String ObjectProviderName, String ObjectNamespace, String ObjectAssemblyName, Boolean UseCache, Boolean fixAssemblyName) +458

DotNetNuke.Framework.Reflection.CreateObject(String ObjectProviderType, String ObjectNamespace, String ObjectAssemblyName) +22

FashionSoft.Modules.DataProvider.CreateProvider() in j:\Sri\WebSites\WebSite1\App_Code\DataProvider.cs:26

FashionSoft.Modules.DataProvider..cctor() in j:\Sri\WebSites\WebSite1\App_Code\DataProvider.cs:20

[TypeInitializationException: The type initializer for 'FashionSoft.Modules.DataProvider' threw an exception.]

FashionSoft.Modules.DataProvider.Instance() in j:\Sri\WebSites\WebSite1\App_Code\DataProvider.cs:33

FashionSoft.Modules.Business.ClientController.GetAllItems_Client(String SortBy, Boolean ShowDeleted) in j:\Sri\WebSites\WebSite1\App_Code\Controller\ClientController.cs:66

Please help me how to fix this issue in separate Website solution apart from DNN platform.

Thanks & Regards

Sri