Winforms- How to get ValueMember of Combobox(i)

Question

I have a combobox assigned with a data source:

Public Sub DataBind(ByVal table As DataTable, ByVal DisplayMember As String, ByVal ValueMember As String)
    cbox.DataSource = table
    cbox.DisplayMember = DisplayMember
    cbox.ValueMember = ValueMember
End Sub

I want to iterate each item in the ComboboxItems and get its ValueMember and DisplayMember. I watched this post ValueMember from ComboBox.Items[i] using WinForms c#

so I tried

For I As Integer = 0 To cbox.Items.Count - 1
  Dim val = DirectCast(cbox.Items(I), KeyValuePair(Of Integer, String)).Value
Next

but I get an invalid cast exception saying that the specified cast is not valid. What am I doing wrong?

Create a `GetItemValue` extension method like [this C# version](https://stackoverflow.com/a/38305363/3110834). — Reza Aghaei, Aug 27 '17 at 15:40
The DisplayMemeber and Valuemember are still in teh DataTable/DataTable, so its not clear what you are playing at — Ňɏssa Pøngjǣrdenlarp, Aug 27 '17 at 16:23

score 1 · Answer 1 · answered Aug 27 '17 at 15:34

1

Found another solution to what I was trying to achieve:

Dim row As DataRow = DirectCast(cbox.Items(I), DataRowView).Row
Dim val As String = (row(cbox.ValueMember)).ToString()

answered Aug 27 '17 at 15:34

itay312

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Winforms- How to get ValueMember of Combobox(i)

1 Answers1