请教如何把图片转换成base64编码?有个网站提供了这样的功能,但不知道是如何实现的:http://yellowgreen.de/image-to-base64-string-encoder
来自Convert Image to Base64 String and Base64 String to Image的代码:
Image to Base64 String
public string ImageToBase64(Image image, System.Drawing.Imaging.ImageFormat format) { using (MemoryStream ms = new MemoryStream()) { // Convert Image to byte[] image.Save(ms, format); byte[] imageBytes = ms.ToArray(); // Convert byte[] to Base64 String string base64String = Convert.ToBase64String(imageBytes); return base64String; } }
Base64 String to Image
public Image Base64ToImage(string base64String) { // Convert Base64 String to byte[] byte[] imageBytes = Convert.FromBase64String(base64String); MemoryStream ms = new MemoryStream(imageBytes, 0, imageBytes.Length); // Convert byte[] to Image ms.Write(imageBytes, 0, imageBytes.Length); Image image = Image.FromStream(ms, true); return image; }
在C#里应该是先转成byte[],然后再转成base64