public void CancelFeedGetInformation()
- (void)cancelFeedGetInformation
public void cancelFeedGetInformation()
public:
void CancelFeedGetInformation();
def CancelFeedGetInformation(self):
This method can be used to gracefully cancel a feed information operation. For example, during feed information progressing, the user might click a cancel button to abort the operation. You can then call this method to end the feed information process without throwing an exception.
For a description of how the methods relate to each other, refer to StartFeedGetInformation.
using Leadtools;
using Leadtools.Codecs;
using Leadtools.ImageProcessing;
using Leadtools.ImageProcessing.Color;
using Leadtools.Svg;
public void FeedGetInformationExample()
{
RasterCodecs codecs = new RasterCodecs();
codecs.CancelFeedGetInformation();
string url = @"https://www.leadtools.com/images/page_graphics/leadlogo.png";
// Create a WebRequest for the URL
WebRequest request = WebRequest.Create(url);
request.Proxy.Credentials = CredentialCache.DefaultCredentials;
// reduce the timeout to 20 sec
request.Timeout = 20000;
WebResponse response = request.GetResponse();
try
{
Stream strm = response.GetResponseStream();
// Read chunks from the stream and feed load to the image
codecs.StartFeedGetInformation(true, 1);
const int bufferSize = 1024;
byte[] buffer = new byte[bufferSize];
bool more;
do
{
System.Windows.Forms.Application.DoEvents();
int read = strm.Read(buffer, 0, bufferSize);
Debug.WriteLine("Downloading {0} bytes", read);
if (read > 0)
more = codecs.FeedGetInformation(buffer, 0, read);
else
{
// no more image data in the stream
more = false;
}
}
while (more);
}
finally
{
response.Close();
}
CodecsImageInfo info = codecs.StopFeedGetInformation();
// Clean up
codecs.Dispose();
// Show the information
Debug.WriteLine(info.ToString());
}
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