C#操作图片与BASE64之间的相互转换适应于网页中不能引用路径的情况

来自于：Rex_IT

#region 图片的Base64
/// <summary>
/// 图片的Base64转换
/// </summary>
public class ImageBase64
{
            /// <summary>
            /// 将图片数据转换为Base64字符串
            /// </summary>
            /// <param name="imagefilepath">文件路径</param>
            public static String ImageToBase64(String imagefilepath)
            {
                byte[] bytes = FileUtil.getBytes(imagefilepath);
                string base64 = Convert.ToBase64String(bytes);
                return base64;
            }
            /// <summary>
            /// 将Base64字符串转换为图片
            /// </summary>
            /// <param name="Strbase64">图片的Base64值</param>
            public static Image Base64ToImage(string Strbase64)
            {
                byte[] bytes = Convert.FromBase64String(Strbase64);
                System.IO.MemoryStream ms = new System.IO.MemoryStream(bytes);
                System.Drawing.Image img = System.Drawing.Image.FromStream(ms);
                return img;
            }
}
#endregion