C# 或 .NET Base64转换图片

        /// <summary>
        /// Base64转换图片
        /// </summary>
        /// <param name="strbase64"></param>
        /// <returns></returns>
        public static string Base64StringToImage(string strbase64,string path)
        {
            string typeimg = strbase64.Split(';')[0].Split('/')[1];

            strbase64 = strbase64.Replace("data:image/"+ typeimg + ";base64,", string.Empty);
            try
            {

                byte[] arr = Convert.FromBase64String(strbase64);
                MemoryStream ms = new MemoryStream(arr);
                Bitmap original = (Bitmap)Image.FromStream(ms);

                using (Bitmap bp = new Bitmap(original))
                {
                    if (typeimg.ToLower().Equals("jpg")|| typeimg.ToLower().Equals("jpeg"))
                    {
                        bp.Save(path, System.Drawing.Imaging.ImageFormat.Jpeg);
                    }
                    if (typeimg.ToLower().Equals("png"))
                    {
                        bp.Save(path, System.Drawing.Imaging.ImageFormat.Png);
                    }
 
                    ms.Close();
                    bp.Dispose();
                }

                return path;



                //return bmp;
            }
            catch (Exception ex)
            {
                return null;
            }

        }