Converting a list: user defined converting function : List « Data Structure « C# / CSharp Tutorial

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2. Data Structure
3. List

using System;
using System.Collections;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.Text;

public class MainClass
{
    private static int ConvertStringToInt(string input)
    {
        int result;
        if (!int.TryParse(input, out result))
            result = -1;
        return result;
    }
    public static void Main()
    {
        List<string> stringList2 = new List<string>(new string[] { "99", "182", "invalid", "15" });
        List<int> intList2 = stringList2.ConvertAll<int>(ConvertStringToInt);
    }
}