当您将图像加载到PictureBox中时，图像放置会有缩放，如何使用图形对象实现相同的效果？
答案 0 :(得分：3)
我认为您的意思是，您希望自己在<{1}} 中使用<{1}}并使用Image对象作为Rectangle渲染其图像处于Graphics模式。请尝试以下代码。我想你想在表单上绘制PictureBox，绘图代码应该添加到表单的Zoom事件处理程序中：
Image要在您的表单上完美地测试它，您还必须设置Paint并启用//The Rectangle (corresponds to the PictureBox.ClientRectangle)
//we use here is the Form.ClientRectangle
//Here is the Paint event handler of your Form1
private void Form1_Paint(object sender, EventArgs e){
ZoomDrawImage(e.Graphics, yourImage, ClientRectangle);
}
//use this method to draw the image like as the zooming feature of PictureBox
private void ZoomDrawImage(Graphics g, Image img, Rectangle bounds){
decimal r1 = (decimal) img.Width/img.Height;
decimal r2 = (decimal) bounds.Width/bounds.Height;
int w = bounds.Width;
int h = bounds.Height;
if(r1 > r2){
w = bounds.Width;
h = (int) (w / r1);
} else if(r1 < r2){
h = bounds.Height;
w = (int) (r1 * h);
}
int x = (bounds.Width - w)/2;
int y = (bounds.Height - h)/2;
g.DrawImage(img, new Rectangle(x,y,w,h));
}
：
ResizeRedraw = true