kjun.kr (kjcoder.tistory.com)

using System;

using System.Drawing;

using System.Runtime.InteropServices;

using System.Windows.Forms;

namespace WindowsFormsApp

{

    public partial class MainForm : Form

    {

        private const uint WDA_NONE = 0;

        private const uint WDA_MONITOR = 1;

        [DllImport("user32.dll")]

        private static extern uint SetWindowDisplayAffinity(IntPtr windowHandle, uint affinity);

        public MainForm()

        {

            InitializeComponent();

            this.onButton.Click  += OnButton_Click;

            this.offButton.Click += OffButton_Click;

        }

        private void OnButton_Click(object sender, EventArgs e)

        {

            this.onButton.BackColor  = Color.White;

            this.offButton.BackColor = Color.Transparent;

            SetWindowDisplayAffinity(this.Handle, WDA_MONITOR);

        }

        private void OffButton_Click(object sender, EventArgs e)

        {

            this.onButton.BackColor  = Color.Transparent;

            this.offButton.BackColor = Color.White;

            SetWindowDisplayAffinity(this.Handle, WDA_NONE);

        }

    }

}

using System.Diagnostics;
using System.Runtime.CompilerServices;
using System.Windows.Forms;

namespace CompilerServicesTest
{
    public partial class TestForm : Form
    {
        public TestForm()
        {
            InitializeComponent();

            CallMethod();
        }

        private void CallMethod()
        {
            WriteLog("CompilerServices Test!!");
        }

        private void WriteLog(string message,
           [CallerMemberName] string memberName = "",
           [CallerFilePath]   string sourceFilePath = "",
           [CallerLineNumber] int sourceLineNumber = 0)
        {
            Trace.WriteLine("message: " + message);
            Trace.WriteLine("member name: " + memberName);
            Trace.WriteLine("source file path: " + sourceFilePath);
            Trace.WriteLine("source line number: " + sourceLineNumber);
        }
    }
}