private static async void dt_download_image_list_when_all()
{
var old = DateTime.Now;
DtUtils.ConsoleWriteLine($"download_image_list_when_all start ...");
var taskList = new List <Task>();
foreach (var url in Constances.WALLPAPERSWIDE_IMAGE_LIST)
{
var task = _download_img(url);
taskList.Add(task);
}
DtUtils.ConsoleWriteLine($"Task.WhenAll start ...");
try
{
await Task.WhenAll(taskList);
}
catch (TaskCanceledException tcex)
{
DtUtils.ConsoleWriteLine($"tasks is canceled !!!");
}
catch (Exception ex)
{
DtUtils.ConsoleWriteLine($"another exception !!! ex : {ex}");
}
DtUtils.ConsoleWriteLine($"Task.WhenAll end !!!");
DtUtils.ConsoleWriteLine($"download_image_list_when_all end !!! {(DateTime.Now - old).TotalMilliseconds} ms");
}
private static async void dt_download_image_list_async()
{
var old = DateTime.Now;
DtUtils.ConsoleWriteLine($"download_image_list_async start ...");
foreach (var url in Constances.WALLPAPERSWIDE_IMAGE_LIST)
{
DtUtils.ConsoleWriteLine($"download start ... url : {url}");
var exeDir = Path.GetDirectoryName(Assembly.GetExecutingAssembly().Location);
var fileName = url.Split(new char[] { '/' }, StringSplitOptions.RemoveEmptyEntries).Last();
var filePath = Path.Combine(exeDir, fileName);
using (var client = new HttpClient())
using (var resStream = await client.GetStreamAsync(url))
using (var fs = File.Open(filePath, FileMode.Create))
{
resStream.CopyTo(fs);
}
DtUtils.ConsoleWriteLine($"download end !!! url : {url}");
}
DtUtils.ConsoleWriteLine($"download_image_list_async end !!! {(DateTime.Now - old).TotalMilliseconds} ms");
}
private static void dt_download_image_list_callback()
{
if (_idx >= Constances.WALLPAPERSWIDE_IMAGE_LIST.Length)
{
DtUtils.ConsoleWriteLine($"download_image_list_callback end !!!");
_idx = 0;
return;
}
else
{
if (_idx == 0)
{
DtUtils.ConsoleWriteLine($"download_image_list_callback start ...");
}
_idx = _idx + 1;
}
var url = Constances.WALLPAPERSWIDE_IMAGE_LIST[_idx];
DtUtils.ConsoleWriteLine($"download start ... url : {url}");
var req = (HttpWebRequest)WebRequest.CreateHttp(url);
req.BeginGetResponse(_res_callback, req);
}
private static async Task _run_long_task(int i)
{
await Task.Run(() =>
{
Thread.Sleep(3000);
DtUtils.ConsoleWriteLine($"dt_async {i} ...");
}, _cts.Token);
}
private static void dt_sync()
{
DtUtils.ConsoleWriteLine("dt_sync start ... ", "dt_sync");
for (int i = 0; i < 10; i++)
{
Thread.Sleep(3000);
DtUtils.ConsoleWriteLine($"dt_sync {i} ...");
}
DtUtils.ConsoleWriteLine("dt_sync end !!! ", "dt_sync");
}
private static void _dt_callback()
{
ThreadPool.QueueUserWorkItem((arg) =>
{
if (_idx == 10)
{
DtUtils.ConsoleWriteLine("dt_callback end !!! ", "dt_callback");
return;
}
Thread.Sleep(3000);
DtUtils.ConsoleWriteLine($"dt_callback {_idx} ...");
_idx = _idx + 1;
_dt_callback();
});
}
private static void _res_callback(IAsyncResult ar)
{
var req = (HttpWebRequest)ar.AsyncState;
var url = req.RequestUri.ToString();
var exeDir = Path.GetDirectoryName(Assembly.GetExecutingAssembly().Location);
var fileName = url.Split(new char[] { '/' }, StringSplitOptions.RemoveEmptyEntries).Last();
var filePath = Path.Combine(exeDir, fileName);
using (var res = req.EndGetResponse(ar))
using (var resStream = res.GetResponseStream())
using (var fs = File.Open(filePath, FileMode.Create))
{
resStream.CopyTo(fs);
}
DtUtils.ConsoleWriteLine($"download end !!! url : {url}");
dt_download_image_list_callback();
}
private static async Task _download_img(string url)
{
DtUtils.ConsoleWriteLine($"download start ... url : {url}");
var exeDir = Path.GetDirectoryName(Assembly.GetExecutingAssembly().Location);
var fileName = url.Split(new char[] { '/' }, StringSplitOptions.RemoveEmptyEntries).Last();
var filePath = Path.Combine(exeDir, fileName);
using (var client = new HttpClient())
{
var resMsg = await client.GetAsync(url, _cts.Token);
using (var resStream = await resMsg.Content.ReadAsStreamAsync())
using (var fs = File.Open(filePath, FileMode.Create))
{
resStream.CopyTo(fs);
}
}
DtUtils.ConsoleWriteLine($"download end !!! url : {url}");
}
private static async void dt_async()
{
DtUtils.ConsoleWriteLine("dt_async start ... ", "dt_async");
try
{
for (int i = 0; i < 10; i++)
{
await _run_long_task(i);
}
}
catch (TaskCanceledException tcex)
{
DtUtils.ConsoleWriteLine($"tasks is canceled !!!");
}
catch (Exception ex)
{
DtUtils.ConsoleWriteLine($"another exception !!! ex : {ex}");
}
DtUtils.ConsoleWriteLine("dt_async end !!! ", "dt_async");
}
private static void dt_callback()
{
DtUtils.ConsoleWriteLine("dt_callback start ... ", "dt_callback");
_idx = 0;
_dt_callback();
}