http://msdn.microsoft.com/en-us/library/vstudio/hh156570.aspx Imports System.Threading '이렇게 쓰면 UI가 멈춤 Private Async Sub Button2_Click(sender As Object, e As EventArgs) Handles Button2.Click Dim result As String = Await WaitSynchronously() TextBox1.Text &= result End Sub Public Async Function WaitSynchronously() As Task(Of String) ' Import System.Threading for t..