图形转换为位图

Question

我创建一个Graphics对象绘制在原始图像上，我想修改后的图像保存为窗体上的一个新的形象。形象，以及绘图

Answer 1

//load bitmap from file 
Image bmp = Image.FromFile(); 

Graphics g = Graphics.FromImage(bmp); 

//do drawing here with g. 

bmp.Save(); 

g.Dispose() 

Answer 2

Bitmap newBitmap = new Bitmap(originalBitmap); 
    using (Graphics myGraphics = Graphics.FromImage(newBitmap)) 
    { 
     // draw here on myGraphics 
    } 
    // newBitmap - modified image 

或者与负载&节省：

Bitmap myBitmap = new Bitmap("fileName.bmp"); 
    using (Graphics myGraphics = Graphics.FromImage(myBitmap)) 
    { 
     // draw here on myGraphics 
    } 
    myBitmap.Save("newFileName.bmp");