title: Cannot save record using Entity Framework
body: <p>Can someone help?</p>
  
  <p>I am an absolute beginner. But I searched the net. There are not many example shown in VB anywhere.</p>
  
  <p>I have created a test project which holds the win form. Then added another project which holds the Entity Model, after building the Model I added a reference of this to the Win form project. After that I added the Model object as a datasource.</p>
  
  <p>I dragged the datasource controls into the form and added the below code.</p>
  
  <pre><code>Private context As TestModelEntities
  
  Private Sub Form1_Load(sender As Object, e As EventArgs) Handles MyBase.Load
  
      context = New TestModelEntities
  
      Dim query = context.employees
      EmployeeBindingSource.DataSource = query.ToList
  
  
  
  
  End Sub
  
  Private Sub DepartmentBindingNavigatorSaveItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles EmployeeBindingNavigatorSaveItem.Click
  
  
  
      Try
          context.SaveChanges()
          MessageBox.Show("Changes saved to the database.")
          Me.Refresh()
      Catch ex As Exception
          MessageBox.Show(ex.Message)
      End Try
  End Sub
  </code></pre>
  
  <p>I am scratching my head all day. Don't know what I am doing wrong.</p>