使用谷歌Chrome浏览器，我有这个元素： using System;
using System.Net.Sockets;
using System.Net;
namespace TestSocket
{
class MainClass
{
public static void Main (string[] args)
{
NetTCPClient tcp_client = new NetTCPClient ();
tcp_client.Connect ("127.0.0.1", 10001);
}
}
class NetTCPClient
{
Socket _socket = null;
public bool Connect (string address, int remote_port)
{
if (_socket != null && _socket.Connected)
return true;
IPHostEntry host_entry = Dns.GetHostEntry (address);
foreach (IPAddress ip in host_entry.AddressList) {
try {
IPEndPoint ipe = new IPEndPoint (ip, remote_port);
_socket = new Socket (ipe.AddressFamily, SocketType.Stream, ProtocolType.Tcp);
IAsyncResult ia = _socket.BeginConnect (ipe, new System.AsyncCallback (ConnectionCallback), _socket);
break;
} catch (Exception e) {
Console.WriteLine ("Connet() catch an exception!");
return false;
}
}
return true;
}
void ConnectionCallback (System.IAsyncResult ar)
{
Console.WriteLine ("ConnectionCallback() ");
}
}
}
正在运行，它显示嵌入式安全摄像头每秒4帧的实时视频。
现在我需要拍摄快照（从＃34复制一帧; copyfromme＆＃34;），并将其保存为png或jpeg到mysql服务器。
如何复制快照？