C# base64圖片 與 Bitmap 互轉換

資料來源: https://blog.csdn.net/weixin_43260645/article/details/82812127

Code

public static class BitmapOper
{
   //圖片轉換base64字串
   public static string Image2Base64String(Bitmap bmp)
   {
       try
       {
           MemoryStream ms = new MemoryStream();
           bmp.Save(ms, System.Drawing.Imaging.ImageFormat.Jpeg);
           byte[] arr = new byte[ms.Length];
           ms.Position = 0;
           ms.Read(arr, 0, (int)ms.Length);
           ms.Close();
           return Convert.ToBase64String(arr);
       }
       catch (Exception ex)
       {
           return null;
       }
   }
   //base64字串轉換圖片
   public static Bitmap Base64String2Image(string strbase64)
   {
       try
       {
           byte[] arr = Convert.FromBase64String(strbase64);
           MemoryStream ms = new MemoryStream(arr);
           Bitmap bmp = new Bitmap(ms);
           ms.Close();
           return bmp;
       }
       catch (Exception ex)
       {
           return null;
       }
   }
}