I Dont get it:TypeLoadException:Could not loadType ASP/VB.NE

April_Staines · **Posted:** Mon May 08, 2006 5:17 pm

Hi,

I have searched and searched and I cant see that Im doing anything wrong. I've based my code on examples i have found, but most are C# and I need to work in VB.Net/ASP.NET for this job.

Im using 1.1 .NET, SQL2005, nhibernate:1.0.2.0

I get this error:
[TypeLoadException: Could not load type 'ActivityMeasure2.Reference.Application, ActivityMeasure2', check that type and assembly names are correct]
NHibernate.Util.ReflectHelper.ClassForName(String name)
NHibernate.Cfg.Binder.ClassForFullNameChecked(String fullName, String errorMessage)

This is the code behind the webform

Code:

Namespace ActivityMeasure2.Reference

    Public Class MainMeasure
        Inherits System.Web.UI.Page
        Public cfg As New NHibernate.Cfg.Configuration

        Private Sub Page_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
            Dim query As String

            query = "FROM Application"
            cfg.AddAssembly("ActivityMeasure2")
            Dim factory As ISessionFactory = cfg.BuildSessionFactory()
            Dim session As ISession = factory.OpenSession()
            DataGrid1.DataSource = session.CreateQuery(query).List()
        End Sub
    End Class

End Namespace

This is the class called "application"

Code:

Namespace ActivityMeasure2.Reference
    Public Class Application
        Private _ID As Integer
        Private _Description As String
        Public Property ApplicationId()
            Get
                Me.ApplicationId() = _ID
            End Get
            Set(ByVal Value)
                _ID = Value
            End Set
        End Property
        Public Property Description()
            Get
                Me.Description = _Description
            End Get
            Set(ByVal Value)
                _Description = Description
            End Set
        End Property
    End Class
End Namespace

The mapping file:

Code:

<?xml version="1.0" encoding="utf-8" ?>
<hibernate-mapping xmlns="urn:nhibernate-mapping-2.0">
<class name="ActivityMeasure2.Reference.Application, ActivityMeasure2" table="tbl_application">
   <id name="ApplicationId" column="ID" type="Int32" length="4" unsaved-value="0">
      <generator class="identity" />
   </id>
   <property name="Description" column= "Description" type="String" length="50"/>
</class>
</hibernate-mapping>

THis is the table

Code:

CREATE TABLE [dbo].[tbl_Application](
   [ID] [int] IDENTITY(1,1) NOT NULL,
   [Description] [varchar](50) NOT NULL,
   [Obsolete] [bit] NOT NULL CONSTRAINT [DF_tblApplication_Obsolete]  DEFAULT (0),
 CONSTRAINT [PK_tbl_Application] PRIMARY KEY CLUSTERED 
(
   [ID] ASC
)WITH (IGNORE_DUP_KEY = OFF) ON [Data]
) ON [Data]

The assembly is definately called "ActivityMeasure2"

Im at a loss to understand what I am doing wrong.

I have zipped & uploaded my project file here:
http://april.fmgirl.com/files/ActivityMeasure2.zip
if anyone is interested in having a look, perhaps I've just been up too late, or maybe Im just having another "blonde" day

Any help would be awesome!

April Staines
Melbourne Australia

devonl · **Posted:** Mon May 08, 2006 5:31 pm

Quote:

there is an extra space between the column= and "Description". take that out....

April_Staines · **Posted:** Thu May 11, 2006 2:52 am

I change it with no effect, Im having the same problem

devonl · **Posted:** Fri May 19, 2006 5:28 pm

april,

i'm sorry that i didn't see your response earlier. i'm guessing you've solved the problem?

radu · **Joined:** Wed Jun 15, 2005 4:17 am **Posts:** 156

As I couldn't download your project from the url you posted I can't say for sure what your problem is. From your post I saw a problem in the setter for the Description property, should be:

Code:

_Description = Value

but this problem shouldn't give you that exception.

Cheers,
Radu

April_Staines · **Posted:** Sun May 21, 2006 3:27 am

I found that I had incorrectly labled the namespaces and as such couldnt load the settings from the mapping file.

Silly mistake really, but I had followed a C# example a little too closely instead of thinking for myself.

All works now, Im a fast growing fan of NHibernate

lotsa lurve

April