Converts this to a human readable string.
public override string ToString() => "{X=" + X.ToString() + ",Y=" + Y.ToString() + "}";
public void AddPoint(Point pt) { if(this.point_dict.ContainsKey(pt.ToString())) { MessageBox.Show("添加坐标失败:\n不能添加已在列表中的坐标!"); return; } this.point_dict[pt.ToString()] = pt; this.lbxScatterPoints.Items.Add(pt.ToString()); }