How Do I 'Hide/Dissable' Entrys From An Datagridviewcomboboxcolumn

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.NET3.5

VB

.NET

combobox

, +

Dear Pros,

i'm looking for an Solution to hide DrowDown Entrys, so i can select Values with my code to fill the combobox with and the User can only use limited values.

Private Sub Button1_Click_1(sender As System.Object, e As System.EventArgs) _
Handles Button1.Click
    Dim source As New DataTable()
    source.Columns.Add("desc")
    source.Columns.Add(New DataColumn("value", GetType(Integer)))

    Dim row As DataRow = source.NewRow
    row("desc") = "for User to use"
    row("value") = 1
    source.Rows.Add(New Object() {"for User to use", 2})
    source.Rows.Add(New Object() {"Not for User to use 1", 4})
    source.Rows.Add(New Object() {"Not for User to use 2", 6})



    Dim combocol As New DataGridViewComboBoxColumn()
    With combocol
        .Name = "combo"
        .DataSource = source
        .ValueMember = "value"
        .DisplayMember = "desc"
        'i am looking for something like:
        '##############################
        '.HideEntry(1) 'Index
        'or
        '.HideEntry(4) 'Value
        'or
        '.HideEntry("Not for User to use 1") 'Text

        'so the User can only select 'for User to use'
    End With
    DataGridView1.Columns.Add(combocol)

    Dim Content As New DataTable()
    With Content
        .Columns.Add("col1")
        .Columns.Add("col2")
        .Rows.Add(New String() {"hallo", "hans"})
        .Rows.Add(New String() {"wie", "gehts"})
    End With
    DataGridView1.DataSource = Content

    'This should make to code but shoud be dissabled for the user use
    DataGridView1.Rows(2).Cells("combo").Value = 4

End Sub

Thank you for your effords
Best Regards
Florian Reiter