篇首语：本文由小编为大家整理，主要介绍了C# 公共控件之pictureBox相关的知识，希望对你有一定的参考价值。
1、添加控件
2、分别实现是三个button功能
private void 打开_Click(object sender, EventArgs e) string pathname = string.Empty; OpenFileDialog file = new OpenFileDialog(); file.InitialDirectory = "."; file.Filter = "所有文件(*.*)|*.*"; file.ShowDialog(); if (file.FileName != string.Empty) try pathname = file.FileName; //获得文件的绝对路径 this.pictureBox1.Load(pathname); 保存.Enabled = true; 翻转90.Enabled = true; catch (Exception ex) MessageBox.Show(ex.Message); private void 保存_Click(object sender, EventArgs e) SaveFileDialog save = new SaveFileDialog(); save.ShowDialog(); if (save.FileName != string.Empty) pictureBox1.Image.Save(save.FileName); private void 翻转90_Click(object sender, EventArgs e) pictureBox1.Image.RotateFlip(RotateFlipType.Rotate90FlipNone); pictureBox1.Refresh();//刷新图片框 //顺时针旋转90度 RotateFlipType.Rotate90FlipNone //逆时针旋转90度 RotateFlipType.Rotate270FlipNone //水平翻转 RotateFlipType.Rotate180FlipY //垂直翻转 RotateFlipType.Rotate180FlipX 3、实现滑动鼠标，图片放大缩小功能
public Form1() InitializeComponent(); pictureBox1.MouseWheel += new MouseEventHandler(pictureBox1_MouseWheel);void pictureBox1_MouseWheel(object sender, MouseEventArgs e) pictureBox1.Width += e.Delta; pictureBox1.Height += e.Delta; this.Width += e.Delta; this.Height += e.Delta;4、实现“十字光标”
Point lastPoint = new Point(-1, -1);private void picturebox_MouseMove(object sender, MouseEventArgs e) if (e.Location != lastPoint)//保持十字光标不消失 pictureBox1.Refresh(); lastPoint = e.Location; DrawReversibleLine(lastPoint);void DrawReversibleLine(Point p) ControlPaint.DrawReversibleLine( pictureBox1.PointToScreen(new Point(0, p.Y)), pictureBox1.PointToScreen(new Point(pictureBox1.Width, p.Y)), SystemColors.Control); ControlPaint.DrawReversibleLine( pictureBox1.PointToScreen(new Point(p.X, 0)), pictureBox1.PointToScreen(new Point(p.X, pictureBox1.Height)), SystemColors.Control);//Color.ForestGreen以上是关于C# 公共控件之pictureBox的主要内容，如果未能解决你的问题，请参考以下文章
