/// <summary>
/// 上传图片
/// </summary>
/// <param name="img"></param>
public string send(Image img)
{
byte[] bt = function.ImageToBytes(img);
string uploadmediarequest = "{\"BaseRequest\":{\"Uin\":" + wxuin + ",\"Sid\":\"" + wxsid + "\",\"Skey\":\"" + skey + "\",\"DeviceID\":\"" + DeviceID() + "\"}," +
@"""ClientMediaId"":" + function.MilliTime() + ",\"TotalLen\":" + bt.Length.ToString() + ",\"StartPos\":0,\"DataLen\":" + bt.Length.ToString() + ",\"MediaType\":4}";
Html html = new Html(function.getImageType(img), webwx_data_ticket, uploadmediarequest, pass_ticket);
string date = html.getdate();
string str = HttpHelps.HttpUploadFile1(file + "/cgi-bin/mmwebwx-bin/webwxuploadmedia?f=json", date, bt);
return(str);
}