public CodecsImageInfo StopFeedGetInformation()
- (nullable LTCodecsImageInfo *)stopFeedGetInformation:(NSError **)error
public CodecsImageInfo stopFeedGetInformation()
public:
CodecsImageInfo^ StopFeedGetInformation();
def StopFeedGetInformation(self):
An CodecsImageInfo object containing information about the image data provided by FeedGetInformation.
This cleans up all the variables and buffers allocated by the StartFeedGetInformation and FeedGetInformation methods and resets all internal variables to their default settings.
You must call this method to complete the file information that was started with StartFeedGetInformation.
If you call this method before enough data is supplied to obtain the image information, it will successfully clean up the process, but will throw an exception. You should trap the error if the process is canceled purposely.
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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