怎样才能止住“叮"声?按 Enter 时发出声音 [英] How can to stop the "ding" sound while pressing enter

问题描述

我需要在按下 Enter 键时停止叮"的声音，但我用它来发送消息.有我的代码:

I need to stop the "ding" sound while pressing enter but I use it to send a message. There is my code:

    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

我正在使用另一种声音来通知文本框何时更改，但此 textbox2 用于发送消息，当它使用输入此ding"播放和其他声音一起发送时.

I'm using an another sound to notify when a textbox changed but this textbox2 is for sending messages and when it sends it using enter this "ding" plays and the other sound together.

推荐答案

尝试将 e.Handled 和 e.SuppressKeyPress 设置为 True.

Try setting e.Handled and e.SuppressKeyPress to 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

这应该会抑制叮"声.

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