圖片從MediaLibrary到Base64字符串

Question

我有以下代碼從相機膠卷中檢索圖片：

private string getBase64Image(Geophoto item)
{
    MediaLibrary mediaLibrary = new MediaLibrary();
    var pictures = mediaLibrary.Pictures;
    foreach (var picture in pictures)
    {
        var camerarollPath = picture.GetPath();
        if (camerarollPath == item.ImagePath)
        {
            // Todo Base64 convert here
        }
    }

    return "base64";
}

我的問題是現在如何將Picture轉換為Base64字符串？

Answer 1

使用GetStream方法從Picture實例獲取Stream 。 從流中獲取字節數組。 使用Convert.ToBase64String方法將字節轉換為Base64字符串。

Stream imageStream = picture.GetImage();
using (var memoryStream = new MemoryStream())
{
    imageStream.CopyTo(memoryStream);
    byte[] buffer = memoryStream.ToArray();
    // this is the Base64 string you are looking for
    string base64String = Convert.ToBase64String(buffer);
}