问将类中的图像设置为窗体中的picturebox

EN

class MyClass
{
    public Image MyImage;
    private void ReadingCallBack(IAsyncResult ar)
    {
        Socket CurrentSocket = null;

        try
        {
            CurrentSocket = (Socket)ar.AsyncState;
            int recvsize = CurrentSocket.EndReceive(ar);
            Array.Resize(ref buffer, recvsize);
            string stream = ASCIIEncoding.ASCII.GetString(buffer);
            switch (stream.Substring(stream.IndexOf('[') + 1, stream.IndexOf(']') - 1))
            {
                case "Screenshot":

                    byte[] imgbuff = new byte[buffer.Length - 12];
                    Buffer.BlockCopy(buffer, 12, imgbuff, 0, imgbuff.Length);

                    MemoryStream ms = new MemoryStream(imgbuff);
                    MyImage = Image.FromStream(ms);

                    ms.Close();
                    break;
            }

            buffer = new byte[1024 * 5000];
            CurrentSocket.BeginReceive(buffer, 0, buffer.Length, SocketFlags.None, new AsyncCallback(ReadingCallBack), CurrentSocket);
        }
        catch (Exception er)
        {
            //etc
        }
    }
}

MyClass Class = new MyClass();
while (Class.MyImage == null)
{
    System.Threading.Thread.Sleep(1);
    Application.DoEvents();
}

pictureBox1.Image = Class.MyImage;