public void DownloadImage(string sourceUri, string targetFile)
{
try
{
_sourceURI = sourceUri;
// Create a HttpWebrequest object to the desired URL.
webRequest = (HttpWebRequest) WebRequest.Create(sourceUri);
var myRequestState = new RequestState
{
request = webRequest,
fileDownload = true,
destinationFile = targetFile,
downloaderObject = this
};
IAsyncResult result =
(IAsyncResult) webRequest.BeginGetResponse(new
AsyncCallback(RespCallback), myRequestState);
ThreadPool.RegisterWaitForSingleObject(result.AsyncWaitHandle,
new WaitOrTimerCallback(TimeoutCallback), this,
_defaultTimeout, true);
allDone.WaitOne();
if (myRequestState.response != null)
myRequestState.response.Close();
Debug.Print("Cancelled: " + this.cancelled + " Timeout: " + timeout);
if (timeout || cancelled)
{
if (myRequestState.fileDownload && myRequestState.fileStream != null)
{
myRequestState.fileStream.Close();
if (File.Exists(myRequestState.destinationFile))
File.Delete(myRequestState.destinationFile);
}
}
if (DownloadCompleted != null)
{
DownloadCompleted(this,
new HttpDownloadEventArgs(this.timeout, this.cancelled)
{
Succeeded = !timeout && !cancelled,
URI = _sourceURI
});
}
}
catch (WebException e)
{
Console.WriteLine("\nWeb Exception raised!");
Console.WriteLine("\nMessage:{0}", e.Message);
Console.WriteLine("\nStatus:{0}", e.Status);
}
catch (Exception e)
{
Console.WriteLine("\nMain Exception raised!");
Console.WriteLine("Source :{0} ", e.Source);
Console.WriteLine("Message :{0} ", e.Message);
if (DownloadCompleted != null)
DownloadCompleted(this,
new HttpDownloadEventArgs(this.timeout, this.cancelled) {Succeeded = false, URI = _sourceURI});
}
}
public void RequestImageSize(string sourceUri, int maxLogoSize)
{
try
{
_sourceURI = sourceUri;
// Create a HttpWebrequest object to the desired URL.
webRequest = (HttpWebRequest)WebRequest.Create(sourceUri);
// Create an instance of the RequestState and assign the previous myHttpWebRequest
// object to it's request field.
var myRequestState = new RequestState
{
request = webRequest,
fileDownload = false,
downloaderObject = this,
MaxLogoSize = maxLogoSize
};
webRequest.Method = "HEAD";
IAsyncResult result =
(IAsyncResult)webRequest.BeginGetResponse(new
AsyncCallback(RespCallback), myRequestState);
ThreadPool.RegisterWaitForSingleObject(result.AsyncWaitHandle,
new WaitOrTimerCallback(TimeoutCallback), this,
_defaultTimeout, true);
allDone.WaitOne();
if (myRequestState.response != null)
{
myRequestState.response.Close();
}
Debug.Print("Cancelled: " + this.cancelled + " Timeout: " + timeout);
if (ImageSizeReceived != null)
{
ImageSizeReceived(this, new HttpDownloadEventArgs(this.timeout, this.cancelled)
{
Succeeded = !timeout && !cancelled
});
}
}
catch (WebException e)
{
Console.WriteLine("\nWeb Exception raised!");
Console.WriteLine("\nMessage:{0}", e.Message);
Console.WriteLine("\nStatus:{0}", e.Status);
}
catch (Exception e)
{
Console.WriteLine("\nMain Exception raised!");
Console.WriteLine("Source :{0} ", e.Source);
Console.WriteLine("Message :{0} ", e.Message);
if (ImageSizeReceived != null)
{
ImageSizeReceived(this,
new HttpDownloadEventArgs(this.timeout, this.cancelled)
{
Succeeded = false
});
}
}
}
public void RequestImageSize(string sourceUri, int maxLogoSize)
{
try
{
_sourceURI = sourceUri;
// Create a HttpWebrequest object to the desired URL.
webRequest = (HttpWebRequest)WebRequest.Create(sourceUri);
// Create an instance of the RequestState and assign the previous myHttpWebRequest
// object to it's request field.
var myRequestState = new RequestState
{
request = webRequest,
fileDownload = false,
downloaderObject = this,
MaxLogoSize = maxLogoSize
};
webRequest.Method = "HEAD";
IAsyncResult result =
(IAsyncResult)webRequest.BeginGetResponse(new
AsyncCallback(RespCallback), myRequestState);
ThreadPool.RegisterWaitForSingleObject(result.AsyncWaitHandle,
new WaitOrTimerCallback(TimeoutCallback), this,
_defaultTimeout, true);
allDone.WaitOne();
if (myRequestState.response != null)
myRequestState.response.Close();
Debug.Print("Cancelled: " + this.cancelled + " Timeout: " + timeout);
if (ImageSizeReceived != null)
ImageSizeReceived(this, new HttpDownloadEventArgs(this.timeout, this.cancelled) { Succeeded = !timeout && !cancelled });
}
catch (WebException e)
{
Console.WriteLine("\nWeb Exception raised!");
Console.WriteLine("\nMessage:{0}", e.Message);
Console.WriteLine("\nStatus:{0}", e.Status);
}
catch (Exception e)
{
Console.WriteLine("\nMain Exception raised!");
Console.WriteLine("Source :{0} ", e.Source);
Console.WriteLine("Message :{0} ", e.Message);
if (ImageSizeReceived != null)
ImageSizeReceived(this,
new HttpDownloadEventArgs(this.timeout, this.cancelled) { Succeeded = false });
}
}
public void DownloadImage(string sourceUri, string targetFile)
{
try
{
_sourceURI = sourceUri;
// Create a HttpWebrequest object to the desired URL.
webRequest = (HttpWebRequest)WebRequest.Create(sourceUri);
var myRequestState = new RequestState
{
request = webRequest,
fileDownload = true,
destinationFile = targetFile,
downloaderObject = this
};
IAsyncResult result =
(IAsyncResult)webRequest.BeginGetResponse(new
AsyncCallback(RespCallback), myRequestState);
ThreadPool.RegisterWaitForSingleObject(result.AsyncWaitHandle,
new WaitOrTimerCallback(TimeoutCallback), this,
_defaultTimeout, true);
allDone.WaitOne();
if (myRequestState.response != null)
{
myRequestState.response.Close();
}
Debug.Print("Cancelled: " + this.cancelled + " Timeout: " + timeout);
if (timeout || cancelled)
{
if (myRequestState.fileDownload && myRequestState.fileStream != null)
{
myRequestState.fileStream.Close();
if (File.Exists(myRequestState.destinationFile))
{
File.Delete(myRequestState.destinationFile);
}
}
}
if (DownloadCompleted != null)
{
DownloadCompleted(this,
new HttpDownloadEventArgs(this.timeout, this.cancelled)
{
Succeeded = !timeout && !cancelled,
URI = _sourceURI
});
}
}
catch (WebException e)
{
Console.WriteLine("\nWeb Exception raised!");
Console.WriteLine("\nMessage:{0}", e.Message);
Console.WriteLine("\nStatus:{0}", e.Status);
}
catch (Exception e)
{
Console.WriteLine("\nMain Exception raised!");
Console.WriteLine("Source :{0} ", e.Source);
Console.WriteLine("Message :{0} ", e.Message);
if (DownloadCompleted != null)
{
DownloadCompleted(this,
new HttpDownloadEventArgs(this.timeout, this.cancelled)
{
Succeeded = false, URI = _sourceURI
});
}
}
}
