Get a Value from Combo Box in VB.NET Winforms

I have a Winforms application and using the code below to populate combo box

        Dim dt As New DataTable
        dt.Columns.Add(New DataColumn("Text", GetType(String)))
        dt.Columns.Add(New DataColumn("Value", GetType(String)))

        Dim dr As DataRow
        dr = dt.NewRow
        dr.Item("Text") = "Rocky"
        dr.Item("Value") = "11"
        dt.Rows.Add(dr)

        cmbProviders.DataSource = dt
        cmbProviders.DisplayMember = "Text"
        cmbProviders.ValueMember = "Value"

How do I get the value from the combo box on some button click