image = Image.FromStream(ms, true);参数无效 求大神解决

Question

      var photoTxt = GetParam("photoTxt");  ---获取的是base64
            var imageBytes = Convert.FromBase64String(photoTxt);
            ms = new MemoryStream(imageBytes, 0, imageBytes.Length);
            ms.Write(imageBytes, 0, imageBytes.Length);
            image = Image.FromStream(ms, true);
            image.Save(toFile);

                            base64如下：
                            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

                            程序走到 image = Image.FromStream(ms, true); 报异常“参数无效”

Answer 1

var imageBytes = Convert.FromBase64String(photoTxt);

调试下,这里转换成来\的不是有效的图片