本文实例讲述了WinForm绘制圆角的方法。分享给大家供大家参考。具体实现方法如下：

using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Linq; using System.Text; using System.Windows.Forms; using System.Runtime.InteropServices; using System.Drawing.Drawing2D; namespace AppStartSample { public partial class Form3 : Form { public Form3() { InitializeComponent(); } private void button1_Click(object sender, EventArgs e) { } private void button2_Click(object sender, EventArgs e) { } public void SetWindowRegion() { System.Drawing.Drawing2D.GraphicsPath FormPath; FormPath = new System.Drawing.Drawing2D.GraphicsPath(); Rectangle rect = new Rectangle(0, 22, this.Width, this.Height - 22);// FormPath = GetRoundedRectPath(rect, 30); this.Region = new Region(FormPath); } private GraphicsPath GetRoundedRectPath(Rectangle rect, int radius) { int diameter = radius; Rectangle arcRect = new Rectangle(rect.Location, new Size(diameter, diameter)); GraphicsPath path = new GraphicsPath(); // 左上角 path.AddArc(arcRect, 180, 90); // 右上角 arcRect.X = rect.Right - diameter; path.AddArc(arcRect, 270, 90); // 右下角 arcRect.Y = rect.Bottom - 0; path.AddArc(arcRect, 0, 90); // 左下角 arcRect.X = rect.Left; path.AddArc(arcRect, 90, 90); path.CloseFigure(); return path; } protected override void OnResize(System.EventArgs e) { this.Region = null; SetWindowRegion(); } } }

希望本文所述对大家的C#程序设计有所帮助。