c#如何实现窗体上位图的放大和缩小
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PictureBox放大50%：PictureBox1.Sizeof(new Size(1.5,1.5))
PictureBox缩小50%：PictureBox1.Sizeof(new Size(0.5,0.5))
Graphics缩小50%：Graphics.DrawImage(b,new Point(0,0),new Size(b.Width / 2,b.Height / 2));
Graphics放大50%：Graphics.DrawImage(b,new Point(0,0),new Size(b.Width / 2 + b.Width,b.Height / 2 + b.Height));
PictureBox缩小50%：PictureBox1.Sizeof(new Size(0.5,0.5))
Graphics缩小50%：Graphics.DrawImage(b,new Point(0,0),new Size(b.Width / 2,b.Height / 2));
Graphics放大50%：Graphics.DrawImage(b,new Point(0,0),new Size(b.Width / 2 + b.Width,b.Height / 2 + b.Height));
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