C# Check if string contains any item in stringlist

Question

How do I check if my input-string contains any strings in my string-list? I looked some solutions up, but most of them weren't what I was looking for and others were in Python and C++.

jgoday · Accepted Answer · 2019-03-17 11:57:04Z

2

You can use linq and string.Contains

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

public class Program
{
    public static void Main()
    {
        var values = new List<string> { "some", "input", "values" };
        var input1 = "this does not have any match";
        Console.WriteLine("Input1 contains some match? " + values.Any(v => input1.Contains(v)));

        var input2 = "this does have some match";
        Console.WriteLine("Input2 contains some match? " + values.Any(v => input2.Contains(v)));
    }
}

answered Mar 17, 2019 at 11:57

jgoday

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3 Comments

zhrgci Over a year ago

I know that => is a lambda expression, but I still don't know what it actually means....and where does the v come from? Sorry, kinda new to this.

jgoday Over a year ago

Linq's enumerable 'Any' checks if the collection has at least, one value that matchs the function passed as parameter. The function is v => input1.Contains(v). Just one parameter (v with the inferred type from the collection) and the body function is inpu1.Contains(v)

jgoday Over a year ago

It's just a csharp way of write anonymous or lambda functions : learn.microsoft.com/en-US/dotnet/csharp/programming-guide/…

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