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csharp简单改写伪原创以下开头内容，不超过100字：

类名修改为：屏幕抓取器csharpusing System.Drawing;using System.Windows.Forms;namespace WindowsFormsApplication1{ class ScreenCapture { private Bitmap _screenshot=null; // 截取全屏 public Bitmap CaptureScreen() { return _screenshot; } }

帮助类实现：

注意修改命名空间

using System.Drawing; using System.Windows.Forms; namespace WindowsFormsApplication1 { class ScreenCapture { private Bitmap _screenshot = null; /// <summary> /// 截取全屏 /// </summary> /// <returns>返回值</returns> public Bitmap CaptureScreen() { return Capture(Rectangle.Empty, false); } /// <summary> /// 截取全屏并保存 /// </summary> /// <param name="fileName">文件路径</param> /// <returns></returns> public Bitmap CaptureScreen(string fileName) { Bitmap screenshot = Capture(Rectangle.Empty, false); saveImage(fileName, screenshot); return screenshot; } /// <summary> /// 截屏到剪切板 /// </summary> public void CopyToClipboard() { if (this._screenshot != null) Clipboard.SetImage(this._screenshot); else if (this._screenshot == null) MessageBox.Show("No screenshot found. Please take a screenshot first.", "Copy to Clipboard"); } /// <summary> /// 区域截屏 /// </summary> /// <param name="rect">区域范围</param> /// <returns>返回值</returns> public Bitmap CaptureRectangle(Rectangle rect) { return Capture(rect, true); } /// <summary> /// 区域截屏 /// </summary> /// <param name="rect">区域范围</param> /// <param name="fileName">文件路径</param> /// <returns>返回值</returns> public Bitmap CaptureRectangle(Rectangle rect, string fileName) { Bitmap screenshot = Capture(rect, true); saveImage(fileName, screenshot); return screenshot; } private Bitmap Capture(Rectangle rect, bool isRect) { int screenWidth = Screen.PrimaryScreen.Bounds.Width; int screenHeight = Screen.PrimaryScreen.Bounds.Height; Bitmap screenshot = null; if(!isRect) screenshot = new Bitmap(screenWidth, screenHeight); else if(isRect) screenshot = new Bitmap(rect.Width, rect.Height); Graphics g = Graphics.FromImage(screenshot); if (!isRect) { g.CopyFromScreen(Point.Empty, Point.Empty, screenshot.Size); } else if (isRect) { g.CopyFromScreen(new Point(rect.X, rect.Y), Point.Empty, rect.Size); } this._screenshot = screenshot; return screenshot; } private void saveImage(string fileName, Bitmap screenshot) { string ext = System.IO.Path.GetExtension(fileName);; ext = ext.ToLower(); if (ext == ".jpg" || ext == ".jpeg") screenshot.Save(fileName, System.Drawing.Imaging.ImageFormat.Jpeg); else if(ext == ".gif") screenshot.Save(fileName, System.Drawing.Imaging.ImageFormat.Gif); else if(ext == ".png") screenshot.Save(fileName, System.Drawing.Imaging.ImageFormat.Png); else if (ext == ".bmp") screenshot.Save(fileName, System.Drawing.Imaging.ImageFormat.Bmp); else if (ext == ".tiff") screenshot.Save(fileName, System.Drawing.Imaging.ImageFormat.Tiff); } } }

到此这篇关于C#实现截图帮助类的文章就介绍到这了。希望对大家的学习有所帮助，也希望大家多多支持自由互联。