Binaryworld - How to assign ItemData to combobox / listbox in VB.net ... [ VB.net -> Controls ]

There is no ItemData property in VB.net for ComboBox and ListBox but you can use another approach which will give you same functionality of ItemData.

Use following code to test how you can assign ItemData. ItemData is generally used to store Id related to the Item of list.

Click here to copy the following block

Class MyList
  Public MyId As Integer
  Public MyStr As String

  Public Sub New(ByVal s As String, ByVal i As Integer)
    MyStr = s
    MyId = i
  End Sub

  '//VB.net will decide DisplayMember using this function
  Public Overrides Function ToString() As String
    ToString = MyStr
  End Function
End Class

Sub LoadComboBox()
  ComboBox1.Items.Add(New MyList("VB", 1))
  ComboBox1.Items.Add(New MyList("VB.net", 2))
  ComboBox1.Items.Add(New MyList("C#", 3))
  ComboBox1.Items.Add(New MyList("ASP.net", 4))
  ComboBox1.Items.Add(New MyList("ASP", 5))
  ComboBox1.Items.Add(New MyList("SQL", 6))

  ComboBox1.SelectedIndex = 0
End Sub

Sub ShowSelected()
  MsgBox ("Text=" & ComboBox1.SelectedItem.Mystr & " ItemData=" & CStr(ComboBox1.SelectedItem.MyId))
End Sub

Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click
  ShowSelected()
End Sub

Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
  LoadComboBox()
End Sub