Can't read an XML file after downloading it from web

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VS2012

Hi everyone,

I am trying to download a file for xmlreader purposes. The file can download fine, but it won't let me read it.

This is what I have so far:

C#

public void downloadXmlFile()
        {
            WebClient webClient = new WebClient();
            //webClient.DownloadFileCompleted += new AsyncCompletedEventHandler(Completed);
            webClient.DownloadFileAsync(new Uri("http://mysite", "c:\newxmlfile.xml");
        }

This is how I try to read it:

C#

try
            {
                reader2 = new XmlTextReader(xmlUrl2);
                reader2.MoveToContent();
            }

It's not liking the new XmlTextReader(xmlUrl2) which is the string of "C:\newxmlfile.xml".

Am I missing something obvious? The error message I'm getting is:
The process cannot access the file 'C:\newxmlfile.xml' because it is being used by another process.

Posted 16-Nov-12 4:57am

joshrduncan2012

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2 solutions

Solution 1

The error means what it says, in plain English. your code that wrote the file, did not close it, so it is locked.

Posted 16-Nov-12 5:00am

Christian Graus

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Orjan Westin · Accepted Answer · 2012-11-16T05:14:00

Solution 3

DownloadFileAsync returns as soon as it's started, instead of waiting until the download is complete.

Therefore it may still be downloading the file when you try to read it, which would mean the file is used by that process.

Either use DownloadFile or wait for the task to finish.

Posted 16-Nov-12 5:14am

Orjan Westin

Comments

joshrduncan2012 16-Nov-12 11:33am

Thanks Orjan! That worked, now the XML file is downloading alot of other garbage along with what is actually contained in the file, such as headers and other stuff.

Orjan Westin 16-Nov-12 11:56am

In that case, can you please mark the question answered? :-)