MsgBox("確認刪除這條數據嗎", MsgBoxStyle.YesNo)//要点击两次确认
  Dim resultCode As Integer = 0


        resultCode = MsgBox("asd", MsgBoxStyle.YesNo).GetHashCode

        If resultCode = MsgBoxResult.Yes Then
end if

private void button1_Click(object sender, EventArgs e)
        {
            if (MessageBox.Show("hegheheh","warning",MessageBoxButtons.YesNo)== DialogResult.Yes) 
            {
                this.label1.Text = "sucess";
            }
        }

------解决方案--------------------
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C# code
private void button1_Click(object sender, EventArgs e)
        {
            if (MessageBox.Show("hegheheh","warning",MessageBoxButtons.YesNo)== DialogResult.Yes) 
            {
                this.label1.Text = "sucess";
            }
        }



C#代码