public async Task <System.Drawing.Image> CreateImageAsync(string url)
{
System.Drawing.Image img = null;
try
{
using (var wc = new WebClientEx())
{
wc.Headers.Add(HttpRequestHeader.UserAgent, Props.UserAgent);
wc.Proxy = null;
wc.timeout = 30000;
using (var fs = await wc.OpenReadTaskAsync(url).Timeout(wc.timeout))
{
img = System.Drawing.Image.FromStream(fs);
}
}
}
catch (WebException Ex)
{
if (Ex.Status == WebExceptionStatus.ProtocolError)
{
var errres = (HttpWebResponse)Ex.Response;
if (errres != null)
{
if (errres.StatusCode == HttpStatusCode.NotFound)
{
using (var fs = new FileStream(Props.GetDefaultThumbnail("comm"),
FileMode.Open,
FileAccess.Read))
{
img = System.Drawing.Image.FromStream(fs);
}
return(img);
}
}
}
DebugWrite.WriteWebln(nameof(CreateImageAsync), Ex);
return(img);
}
catch (Exception Ex) //その他のエラー
{
DebugWrite.Writeln(nameof(CreateImageAsync), Ex);
return(img);
}
return(img);
}