Combobox selected Item does not match with its selected - vb.net

Question

I faced with that issue which appears with spaces after letters finished more than Combobox.SelectedItem's length. Why? How can I fix this issue?
Below is showing my issue as visual its a very short and small video.
Here is a small video
Imports System.Data.SqlClient
Public Class Main
WithEvents bsData As New BindingSource
Dim sConn As New SqlConnection
Dim dt As New DataTable
Dim ds As New DataSet
Private Sub Main_Load(sender As Object, e As EventArgs) Handles MyBase.Load
sConn.ConnectionString = "Data Source=PC-N39;Initial Catalog=Esi01;Persist Security Info=True;User ID=sa;Password=sas"
sConn.Open()
Try
Dim myTable As DataTable = New DataTable("MyTable")
myTable.Columns.Add(New DataColumn("Group Code"))
myTable.Columns.Add(New DataColumn("Description"))
myTable.Columns.Add(New DataColumn("NothingSerious"))
Dim cmd As New SqlCommand("Select * from tbUnit", sConn)
Dim dr As SqlDataReader = cmd.ExecuteReader(CommandBehavior.Default)
Dim myRow As DataRow
While dr.Read()
myRow = myTable.NewRow
myRow.Item(0) = dr(0)
myRow.Item(1) = dr(1)
myRow.Item(2) = dr(2)
myTable.Rows.Add(myRow)
End While
dr.Close()
Dim myData4 As DataTable = myTable
ds = New DataSet()
ds.Tables.Add(myData4)
MultiColumnCombo1.DisplayMember = "Group Code"
MultiColumnCombo1.DrawMode = DrawMode.OwnerDrawVariable
MultiColumnCombo1.ColumnWidths = "50;150"
MultiColumnCombo1.DataSource = myData4
MultiColumnCombo1.Text = String.Empty
Catch ex As Exception
MsgBox(ex.ToString)
End Try
sConn.Close()
End Sub
End Class

Answer 1

What type is MultiColumnCombo1 ? I suppose it's a third party component.
As far as I can see in your video, it seems that it takes the biggest element in your data, take it's length and add spaces to other elements to make them the same size.
You probably won't be able to change the component's behavior, but you can apply the same logic to what you enter in your TextBox : adding spaces to make them match. Or if you simply need to make a condition that test if they are equal, you can do as follow :
if(YourComboboxSelectedItem.Trim() == StringYourAreComparingItTo)
See String.Trim(), that will discard the extra whitespaces.