如何在按下ENTER鍵的同時停止「叮」聲

Question

我需要在按下回車鍵時停止「叮」聲，但我用它發送消息。這裏是我的代碼：

Private Sub textbox2_KeyDown(sender As Object, e As System.Windows.Forms.KeyEventArgs) _ 
Handles TextBox2.KeyDown 
    If e.KeyCode = Keys.Enter Then 
     TextBox3.ReadOnly = True 
     If TextBox2.Text = ("") Then 
     Else 
      Dim PostData = "token=" & TextBox1.Text & "&msg=" & TextBox3.Text & ": " & TextBox2.Text 
      Dim request As WebRequest = WebRequest.Create("http://url.com/msg.php") 

      request.Method = "POST" 
      Dim byteArray As Byte() = Encoding.UTF8.GetBytes(PostData) 
      request.ContentType = "application/x-www-form-urlencoded" 
      request.ContentLength = byteArray.Length 
      Dim dataStream As Stream = request.GetRequestStream() 
      dataStream.Write(byteArray, 0, byteArray.Length) 
      dataStream.Close() 
      Dim response As WebResponse = request.GetResponse() 
      dataStream = response.GetResponseStream() 
      Dim reader As New StreamReader(dataStream) 
      Dim responseFromServer As String = reader.ReadToEnd() 
      reader.Close() 
      dataStream.Close() 
      response.Close() 
      TextBox2.Clear() 
     End If 
    End If 
End Sub 

我使用的是另一種聲音，當一個文本框改爲通知，但這是TextBox2中發送消息，當它使用它進入這個「叮」的劇本和其他聲音一起發送。

Answer 1

嘗試設置e.Handled和e.SuppressKeyPress至True。

Private Sub TextBox2_KeyDown(sender As Object, e As KeyEventArgs) Handles TextBox2.KeyDown 
    If e.KeyCode = Keys.Enter Then 
     ' Your code... 

     e.Handled = True 
     e.SuppressKeyPress = True 
    End If 
End Sub 

這應該壓制「叮」。