string URL = string.Empty; //保存下载地址
/// <summary>
/// 接收响应
/// </summary>
/// <param name="res"></param>
void ResponseReceived(IAsyncResult res)
{
try
{
_response = (HttpWebResponse)_request.EndGetResponse(res);
}
catch (WebException /*ex*/)
{
MessageBoxForm.Show("下载错误！", MessageBoxButtons.OK);
return;
}
Cursor.Current = Cursors.WaitCursor;
_dataBuffer = new byte[DataBlockSize];
_fs = new FileStream(RFVersionInfo.GetCurrentDirectory() + @"\" + "Update_CS.exe", FileMode.Create);
_response.GetResponseStream().BeginRead(_dataBuffer, 0, DataBlockSize, new AsyncCallback(OnDataRead), this);
Cursor.Current = Cursors.Default;
}
/// <summary>
/// 读取数据
/// </summary>
/// <param name="res"></param>
void OnDataRead(IAsyncResult res)
{
//结束读取
int nBytes = _response.GetResponseStream().EndRead(res);
_fs.Write(_dataBuffer, 0, nBytes);
if (nBytes > 0)
{
_response.GetResponseStream().BeginRead(_dataBuffer, 0, DataBlockSize, new AsyncCallback(OnDataRead), this);
}
else
{
_fs.Close();
_fs = null;
Cursor.Current = Cursors.WaitCursor;
int index = URL.LastIndexOf(@"/") > URL.LastIndexOf(@"\") ? URL.LastIndexOf(@"/") : URL.LastIndexOf(@"\");
//获得需要执行的程序
string execFileName = RFVersionInfo.GetCurrentDirectory() + @"\" + URL.Substring(index + 1);
if (File.Exists(execFileName))
{
//由进程重新打开
Process.Start(execFileName, null);
Cursor.Current = Cursors.Default;
Thread.Sleep(500);
Process.GetCurrentProcess().Kill();
}
else
{
//提示用户
MessageBoxForm.Show("未找到启动文件：" + execFileName + "，请联系管理员！", MessageBoxButtons.OK);
}
Application.Exit();
}
}