[Solved] How to search a webpage with keywords from a .txt list? [closed]

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Assuming that the .txt file contains one word per line, here is a simple solution:

string[] keywords = System.IO.File.ReadAllLines(@"C:\Temp\keywords.txt");

List<string> nomatch = new List<string>();

System.Net.WebClient wc = new System.Net.WebClient();

foreach (string word in keywords)
{
    string response = wc.DownloadString("http://www.website.com/search.php?word=" + word);

    if (response != null && response.Contains("No matches found"))
        nomatch.Add(word);
}

if (nomatch.Count > 0)
    System.IO.File.WriteAllLines(@"C:\Temp\nomatch.txt", nomatch.ToArray());

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solved How to search a webpage with keywords from a .txt list? [closed]