Imports System.ComponentModel

Public Class MyComboBox
    Inherits System.Windows.Forms.ComboBox

    Public Sub New()
    End Sub

    Sub fillWithMyListItem(l As List(Of MyListItem))
        MyBase.Items.Clear()
        For Each i In l : MyBase.Items.Add(i) : Next
    End Sub
    Sub fillWithSQL(sql As String, Optional showValueInText As Boolean = True, Optional conn As String = "DISPO")
        fillWithMyListItem((New cOptionenDAL).loadCboBySqlWithListItem(sql, showValueInText, conn))
    End Sub

    Public Property _value As String
        Get
            Return getValueOfItem()
        End Get
        Set(v As String)
            changeItem(v)
        End Set
    End Property

    Sub changeItem(v)
        For Each i In MyBase.Items
            If DirectCast(i, MyListItem).Value = v Then
                MyBase.SelectedItem = i : Exit Sub
            End If
        Next
    End Sub

    Function getValueOfItem() As String
        Try : Return DirectCast(MyBase.SelectedItem, MyListItem).Value : Catch : End Try
        Return ""
    End Function
End Class