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HomeHomeOur CommunityOur CommunityGeneral Discuss...General Discuss...DotNetNuke.Services.Exceptions.ModuleLoadException: The type initializer for DotNetNuke.Services.Exceptions.ModuleLoadException: The type initializer for 'DnnContactos.Data.Data
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12/3/2008 8:40 PM
 
Francisco Cartusciello

Joined: 12/30/2007
Posts: 65

Hi, i'm trying to create a DNN Module using visual studio 2008 and DNN 4.9, but when i tried to insert a new record in the database, dnn show me this error:

Error: DnnContactos is currently unavailable.
DotNetNuke.Services.Exceptions.ModuleLoadException: The type initializer for 'DnnContactos.Data.DataProvider' threw an exception. ---> System.TypeInitializationException: The type initializer for 'DnnContactos.Data.DataProvider' threw an exception. ---> System.ArgumentNullException: Value cannot be null. Parameter name: type at System.Activator.CreateInstance(Type type, Boolean nonPublic) at DotNetNuke.Framework.Reflection.CreateObject(String ObjectProviderType, String ObjectProviderName, String ObjectNamespace, String ObjectAssemblyName, Boolean UseCache) at DotNetNuke.Framework.Reflection.CreateObject(String ObjectProviderType, String ObjectNamespace, String ObjectAssemblyName) at DnnContactos.Data.DataProvider.CreateProvider() in D:\Desarrollo\DotNetNuke\DesktopModules\DnnContactos\Components\Data\DataProvider.vb:line 22 at DnnContactos.Data.DataProvider..cctor() in D:\Desarrollo\DotNetNuke\DesktopModules\DnnContactos\Components\Data\DataProvider.vb:line 17 --- End of inner exception stack trace --- at DnnContactos.Data.DataProvider.Instance() at DnnContactos.Business.DnnContactosController.AddContactos(String nombre, String apellidos, String direccion, String telefono, String celular, String email, Int32 moduleId, DateTime fechaCreacion) in D:\Desarrollo\DotNetNuke\DesktopModules\DnnContactos\Components\Business\DnnContactosController.vb:line 27 at DnnContactos.ViewDnnContactos.lnkAgregar_Click(Object sender, EventArgs e) in D:\Desarrollo\DotNetNuke\DesktopModules\DnnContactos\ViewDnnContactos.ascx.vb:line 51 --- End of inner exception stack trace

Looking for this same error in older post, i found that generate on this line:

 

CType(Framework.Reflection.CreateObject("data", "DnnContactos.Data", "DnnContactos"), DataProvider)

when i put the wrong assambly and the wrong namespace, but i check out and all is fine. so i don´t know what is the problem. I'm using sql server 2005.

 

i hope you can help me.

regards.

 

Francisco Cartusciello 

 

objProvider =
 
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12/4/2008 2:10 PM
 
Francisco Cartusciello

Joined: 12/30/2007
Posts: 65

 Hi everyone, finally i found the error, in this year i began to develop DNN modules with DNN 3.0.13 for the .net framework 1.1 and in it you just put in createprovider method like this:

CType(Framework.Reflection.CreateObject("data", "DnnContactos.Data", "DnnContactos"), DataProvider)

this is because we create two differents projects, one for the business logic and presentation layer and another for the Dataprovider, both project inside a visual studio solution.

but in the DNN 4.9 only exists one project that contain the presentation layer, the business layer and the dataprovider layer, so to create a dataprovider should do in this form:

CType(Framework.Reflection.CreateObject("data", "DnnContactos.Data", ""), DataProvider) without especify the assambly, because are in the same assambly. That is the way i do it and now i can use the module well.

 

thanks.
 
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