private void SendButton_Click(object sender, RoutedEventArgs e)
{
if (TextSend.Text == string.Empty)
{
return;
}
sock.UserInputText = TextSend.Text;
sock.send();
_chat_box_tool.Send("http://www.jf258.com/uploads/2013-07-21/073810328.jpg", sock.getuserName(), TextSend.Text, DateTime.Now.ToString());
TextSend.Text = "";
}