Select item in combobox

how can I select an item in a combobox filled with items?

I am using KeyValuePairs (see attached code).

Say I have 100 items in the combobox and if a project exists, the form loads with that project selected...

'// fill the combobox with KeyValuePairs
 
For i As Integer = 0 To datatable.Rows.Count - 1
                combobox1.Items.Add(New clsKeyValuePair(datatable.Rows(i).Item("PROJECT_ID"), datatable.Rows(i).Item("PROJECT_NAME")))
Next
 
'// KeyValuePairs class
Public Class clsKeyValuePair
 
    Public Key As Object
    Public Value As String
 
    Public Sub New(ByVal NewValue As Object, ByVal NewDescription As String)
        Key = NewValue
        Value = NewDescription
    End Sub
 
    Public Overloads Overrides Function ToString() As String
        Return Value
    End Function
 
End Class

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