/// <summary>
/// Adds a new <see cref="IImageFormat"/> to the collection of supported image formats.
/// </summary>
/// <param name="format">The new format to add.</param>
public void AddImageFormat(IImageFormat format)
{
if (this.imageFormats.All(i => i.GetType() != format.GetType()))
{
this.imageFormats.Add(format);
}
}
/// <summary>
/// 将图片转为base64字符串
/// 使用指定格式,并添加data:image/jpg;base64,前缀
/// </summary>
/// <param name="img">图片对象</param>
/// <param name="imageFormat">指定格式</param>
/// <returns></returns>
public static string ToBase64StringUrl(Image img, IImageFormat imageFormat)
{
string base64 = ToBase64String(img, imageFormat);
var type = imageFormat.GetType();
var formatName = "jpg";
if (type == typeof(JpegFormat))
{
}
else if (type == typeof(BmpFormat))
{
formatName = "bmp";
}
else if (type == typeof(PngFormat))
{
formatName = "png";
}
else if (type == typeof(GifFormat))
{
formatName = "gif";
}
return($"data:image/{formatName};base64,{base64}");
}
