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HomeHomeDNN Open Source...DNN Open Source...Module ForumsModule ForumsIFrameIFrameInvalidCastException from SqlDataProvider to DataProviderInvalidCastException from SqlDataProvider to DataProvider
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9/11/2014 3:44 AM
 

I converted the code from VB to C# and web application. However when the module is running, I get the error below. The code is from DataProvider.vb file. I don't know why the error exists as it's casting from a child class to its base class. Any ideas?


Error message:

Error: IFrame is currently unavailable. DotNetNuke.Services.Exceptions.ModuleLoadException: Unable to cast object of type 'DotNetNuke.Modules.IFrame.SqlDataProvider' to type 'DotNetNuke.Modules.IFrame.Data.DataProvider'. ---> System.InvalidCastException: Unable to cast object of type 'DotNetNuke.Modules.IFrame.SqlDataProvider' to type 'DotNetNuke.Modules.IFrame.Data.DataProvider'. at 

VB version:

 Public Shared ReadOnly Property Instance() As DataProvider

            Get

                If _provider Is Nothing Then

                    _provider = CType(Reflection.CreateObject(ProviderType, ProviderNamespace, ""), DataProvider)

                End If

                Return _provider

            End Get

 

        End Property

 

C# version:

  public static DataProvider Instance

        {

            get

            {

                if (_provider == null)

                {

                    _provider = (DataProvider) (Reflection.CreateObject(ProviderType, ProviderNamespace, ""));

                }

                return _provider;

            }

        }

 
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HomeHomeDNN Open Source...DNN Open Source...Module ForumsModule ForumsIFrameIFrameInvalidCastException from SqlDataProvider to DataProviderInvalidCastException from SqlDataProvider to DataProvider


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