Linq list of string match any inside string - linq

Question

Ok, so given the array:
string[] keywordlist = new string[] { "match", "found" };
This returns the error "The data types text and text are incompatible in the equal to operator":
List<StaticPage> matches = cdc.StaticPages.Where(x=>keywordlist.Contains(x.BodyCopy)).ToList();
And this does not give an error but returns 0 results although there are several rows that should meet the condition, and I don't see why I would need to send the table to a list (at least never had the need to do it before):
List<StaticPage> matches = cdc.StaticPages.ToList().Where(x=>keywordlist.Contains(x.BodyCopy)).ToList();
So whats wrong? I just want to return any rows in witch --> any <-- of the words in the array is found in the "BodyCopy" field.

Answer 1

Your line
List<StaticPage> matches = cdc.StaticPages.Where(x=>keywordlist.Contains(x.BodyCopy)).ToList();
means that you are looking such pages that have BodyCopy equals to one of keywords. Instead of that, you need the following line:
var matches = cdc.StaticPages.Where(
x => keywordlist.Any(keyword => x.BodyCopy.Contains(keyword))
).ToList();
It means that your are looking such pages the have one of keyword inside their content.
A full snippet:
class StaticPage
{
public string BodyCopy;
}
static void Main()
{
string[] keywordlist = { "match", "found" };
var cdc = new
{
StaticPages = new List<StaticPage>
{
new StaticPage {BodyCopy = "text match text"},
new StaticPage {BodyCopy = "text text"},
new StaticPage {BodyCopy = "text found text"}
}
};
var matches = cdc.StaticPages.Where(
x => keywordlist.Any(keyword => x.BodyCopy.Contains(keyword))
).ToList();
foreach (var staticPage in matches)
Console.WriteLine(staticPage.BodyCopy);
}
Output:
text match text
text found text