C# string.Contains using variable

Question

string[] pullspec = File.ReadAllLines(@"C:\fixedlist.txt");
foreach (string ps in pullspec)
{
    string pslower = ps.ToLower();
    string[] pslowersplit = pslower.Split('|');
    var keywords = File.ReadAllLines(@"C:\crawl\keywords.txt");
    if (pslower.Contains("|"))
    {
        if (pslower.Contains(keywords))
        {
            File.AppendAllText(@"C:\" + keyword + ".txt", pslowersplit[1] + "|" + pslowersplit[0] + "\n");
        }
    }
}

This doesn't compile because of pslower.Contains(keywords) but I'm not trying to do 100 foreach loops.

Does anybody have any suggestions?

kbrimington · Accepted Answer · 2010-08-02 23:27:20Z

2

Using LINQ:

if (keywords.Any(k => pslower.Contains(k)))

answered Aug 2, 2010 at 23:27

kbrimington

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4 Comments

user222427 Over a year ago

so how do i do File.AppendAllText(@"C:\" + keyword + ".txt", pslowersplit[1] + "|" + pslowersplit[0] + "\n");

user222427 Over a year ago

make the selected keyword the name of the text file

kbrimington Over a year ago

@Mike: Do you mean to create a file for only the first match, or for all matches?

kbrimington Over a year ago

@Mike: try this: var keyword = keywords.FirstOrDefault(k => pslower.Contains(k)); if (keyword != null) { /* ... */ }

tdammers · Accepted Answer · 2010-08-02 23:28:44Z

2

You have a collection of keywords, and you want to see if any of them (or all of them?) are contained in a given string. I don't see how you would solve this without using a loop somewhere, either explicit or hidden in some function or linq expression.

answered Aug 2, 2010 at 23:28

tdammers

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Comments

Will A · Accepted Answer · 2010-08-02 23:37:37Z

0

Another solution - create a String[]of the keywords and then string[] parts = pslower.Split(yourStringArray, StringSplitOptions.None); - if any of your strings appear then parts.Length > 1. You won't easily get your hands on the keywords this way, tho'.

answered Aug 2, 2010 at 23:37

Will A

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