How to correctly bind data to combobox using bindingsource object in the designer.

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VB

Windows

forms

Hello:

I understand how to bind data to a ComboBox programmatically:

For Example:

ComboBox1.DataSource = data.EmployeeList()
ComboBox1.DisplayMember = "Name"
ComboBox1.ValueMember = "EmployeeID"

However, what I am attempting to do is bind data using the designer and a Binding Source Object.

As demonstrated below, using the designer I added a data source and configured the display and value member but there is no data when the form loads.

How do I bind a list using the designer to a Combobox?

What I have tried:

First I created a Data Source:

Public Class Employee

    Public Property EmployeeID As String
    Public Property Name As String

End Class

Public Class Data

    Public Function Data() As List(Of Employee)

        Return New List(Of Employee)() From { _
         New Employee() With { _
          .Name = "George Benson", _
          .EmployeeID = 321
         }, _
         New Employee() With { _
          .Name = "Gladys Knight", _
          .EmployeeID = 322
         }, _
         New Employee() With { _
          .Name = "David Bowie", _
          .EmployeeID = 323
         }, _
         New Employee() With { _
          .Name = "Steve Wonder", _
          .EmployeeID = 324
         }, _
         New Employee() With { _
          .Name = "Tina Turner", _
          .EmployeeID = 325
         }
        }
    End Function

End Class

Next I created a View Model with a single read only property so that I can bind the
ComboBox to it.

Note: this is not full implementation of MVP Or MVPM, this is for demonstration only.

Public Class EmployeeViewModel

    Private _listEmployees As Data

    Sub New()
        _listEmployees = New Data()
    End Sub

    Public ReadOnly Property EmployeeList() As List(Of Employee)
        Get
            Return _listEmployees.Data()
        End Get
    End Property

End Class