MSDN library address: regular express

Corrected:

string pattern = @"http://msdn\.microsoft\.com/en-us/library/[a-zA-Z0-9]+\.aspx";

Select allOpen in new window

Also:

foreach (Match match in r.Matches) //not sure how
{
    Console.WriteLine("Address: {0}", match.Value);
}

Select allOpen in new window

I got an error

Foreach cannot operate on a 'method group'. 
Did you intend to invoke the 'method group'?

Select allOpen in new window

I want to grab all web pages.

Ooops! Silly oversight on my part. You need parentheses on the call to Matches(). You also need to pass the string that holds the data:

foreach (Match match in r.Matches(source_data_string))
{
    Console.WriteLine("Address: {0}", match.Value);
}

Select allOpen in new window

I want to grab all web pages.

I'm not quite sure what you mean by this. Are you saying you want to extract all the MSDN URLs from a string of data, or are you saying you want to download all of the MSDN pages in the MSDN library? You cannot do the latter with regex alone.

Yes, actually I want to download all of the MSDN pages in the MSDN library. I know regex is not enough. But I think that I should get all web pages address first. I saw that there is a similar link DownloadString
So in your code

foreach (Match match in r.Matches(source_data_string))

Select allOpen in new window

How can I get

source_data_string

Select allOpen in new window

I have another web
bash command
I used the pattern

string pattern = @"([a-zA-Z0-9-]+\.html)";

Select allOpen in new window

Is it right?