How to make my Windows Form app snap to screen edges?

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This worked pretty well, works on multiple monitors, observes the taskbar:

  public partial class Form1 : Form {
    public Form1() {
      InitializeComponent();
    }
    private const int SnapDist = 100;
    private bool DoSnap(int pos, int edge) {
      int delta = pos - edge;
      return delta > 0 && delta <= SnapDist;
    }
    protected override void  OnResizeEnd(EventArgs e) {
      base.OnResizeEnd(e);
      Screen scn = Screen.FromPoint(this.Location);
      if (DoSnap(this.Left, scn.WorkingArea.Left)) this.Left= scn.WorkingArea.Left;
      if (DoSnap(this.Top, scn.WorkingArea.Top)) this.Top = scn.WorkingArea.Top;
      if (DoSnap(scn.WorkingArea.Right, this.Right)) this.Left = scn.WorkingArea.Right - this.Width;
      if (DoSnap(scn.WorkingArea.Bottom, this.Bottom)) this.Top = scn.WorkingArea.Bottom - this.Height;
    }
  }

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