你可以在.NET中打开JPEG,添加文本并重新保存为JPEG吗?

时间:2010-08-27 01:02:14

标签: c# .net image image-manipulation

我想在.NET 4.0中编写一个小程序,它将打开一个.jpg(或.jpeg)文件,在图像上添加一行文本,然后将图像重新保存为.jpg。有谁知道最简单的方法吗?

感谢您的帮助。

2 个答案:

答案 0 :(得分:12)

这样的事情:

var filePath = @"D:\Pictures\Backgrounds\abc.jpg";
Bitmap bitmap = null;

// Create from a stream so we don't keep a lock on the file.
using (var stream = File.OpenRead(filePath))
{
    bitmap = (Bitmap)Bitmap.FromStream(stream);
}

using (bitmap)
using (var graphics = Graphics.FromImage(bitmap))
using (var font = new Font("Arial", 20, FontStyle.Regular))
{
    // Do what you want using the Graphics object here.
    graphics.DrawString("Hello World!", font, Brushes.Red, 0, 0);

    // Important part!
    bitmap.Save(filePath);
}

答案 1 :(得分:3)

var myBitmap = new Bitmap("C:\\myImage.jpg");
var g = Graphics.FromImage(myBitmap);
g.DrawString("My\nText", new Font("Tahoma", 40), Brushes.White, new PointF(0, 0));