Windows phone 8 在Windows Phone上将ByteArray转换为base64

我在使用base64转换器时遇到了一个巨大的问题。我在Windows Phone上调用标准的base64转换函数，但结果总是与web转换器以及Android和iOS平台上的许多其他转换器上预期的结果不同

基本上，我从画廊或照相机中获取图像，并将其转换为字节数组。字节数组传递给convert方法

Convert.ToBase64String(bytearray);

结果字符串应如下所示：

/9j/4AAQSkZJRgABAQEASABIAAD//gATQ3JlYXRlZCB3aXRoIEdJTVD/2wBDAAMCAgMCAgMDAwMEAwMEBQgFBQQEBQoHBwYIDAoMDAsKCwsNDhIQDQ4RDgsLEBYQERMUFRUVDA8XGBYUGBIUFRT/2wBDAQMEBAUEBQkFBQkUDQsNFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBT/wgARCAADAAMDAREAAhEBAxEB/8QAFAABAAAAAAAAAAAAAAAAAAAABv/EABUBAQEAAAAAAAAAAAAAAAAAAAUG/9oADAMBAAIQAxAAAAFMVff/xAAVEAEBAAAAAAAAAAAAAAAAAAAEBf/aAAgBAQABBQIlxoS//8QAGhEAAAcAAAAAAAAAAAAAAAAAAAEEFVKh0f/aAAgBAwEBPwFrSQs9H//EABcRAAMBAAAAAAAAAAAAAAAAAAADE1H/2gAIAQIBAT8BszT/xAAbEAACAgMBAAAAAAAAAAAAAAABAwISAAQRIf/aAAgBAQAGPwJOsl1EpgFwjUHgHgz/xAAZEAACAwEAAAAAAAAAAAAAAAABEQAhMUH/2gAIAQEAAT8hwppWyGQzQ7P/2gAMAwEAAgADAAAAEJ//xAAUEQEAAAAAAAAAAAAAAAAAAAAA/9oACAEDAQE/ECH/xAAXEQEAAwAAAAAAAAAAAAAAAAABANHw/9oACAECAQE/ENAqf//EABgQAQEAAwAAAAAAAAAAAAAAAAERACEx/9oACAEBAAE/EOKqRz0uAFSs2rn/2Q==

但结果是这样的

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

虽然差别不大，但却有所不同。 正确的一个是使用PHP生成的。Windows phone是使用图像上的NICODE编码生成的

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有人知道哪里会有问题吗

尝试使用

WriteableBitmap

使用这段代码：

 public string GetBase64Encoding(BitmapImage imageUrl)
        {
        byte[] bytearray = null;
        using (MemoryStream ms = new MemoryStream())
            {
            if (imageUrl == null)
                {

                }
            else
                {
                WriteableBitmap wbitmp = new WriteableBitmap((BitmapImage)imageUrl);

                wbitmp.SaveJpeg(ms, 46, 38, 0, 100);

                bytearray = ms.ToArray();
                }
            }
        string str = Convert.ToBase64String(bytearray);

        return str;
        }

有关更多信息，您也可以参考以下内容：

希望有帮助