You have to create the separate method for binding the Data in Combo Box
Add Two ComboBox in Form Design and in Code past these line:
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
Me.BindCBFirst()
Me.BindCBSecond()
End Sub
Private Sub BindCBFirst()
Dim dt As New DataTable()
dt.Columns.Add("Id", GetType(Integer))
dt.Columns.Add("Country", GetType(String))
dt.Rows.Add(1, "USA")
dt.Rows.Add(2, "England")
dt.Rows.Add(3, "India")
Me.ComboBox1.DisplayMember = "Country"
Me.ComboBox1.ValueMember = "ID"
Me.ComboBox1.DataSource = dt
End Sub
Private Sub BindCBSecond()
Dim dt As New DataTable()
dt.Columns.Add("Id", GetType(Integer))
dt.Columns.Add("Country", GetType(String))
dt.Rows.Add(1, "USA")
dt.Rows.Add(2, "England")
dt.Rows.Add(3, "India")
Me.ComboBox2.DisplayMember = "Country"
Me.ComboBox2.ValueMember = "ID"
Me.ComboBox2.DataSource = dt
End Sub
Thank You.