将图像(按路径选择)转换为base64字符串 [英] Convert an image (selected by path) to base64 string

问题描述

如何将图像从用户计算机上的路径转换为C#中的base64字符串?

How do you convert an image from a path on the user's computer to a base64 string in C#?

例如，我具有图像的路径(格式为C:/image/1.gif)，并且希望具有像data:image/gif;base64,/9j/4AAQSkZJRgABAgEAYABgAAD..这样的数据URI，表示返回的1.gif图像.

For example, I have the path to the image (in the format C:/image/1.gif) and would like to have a data URI like data:image/gif;base64,/9j/4AAQSkZJRgABAgEAYABgAAD.. representing the 1.gif image returned.

推荐答案

尝试一下

using (Image image = Image.FromFile(Path))
{
    using (MemoryStream m = new MemoryStream())
    {
        image.Save(m, image.RawFormat);
        byte[] imageBytes = m.ToArray();

        // Convert byte[] to Base64 String
        string base64String = Convert.ToBase64String(imageBytes);
        return base64String;
    }
}

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