CODEWITHSUNDEEP
c#
Slinidy
Slinidy

Reputation: 387

Check all strings in arraylist contains in other arraylist

I trying make if Arraylist all values contains in other arraylist (all values)

Arraylist one:

Name
Item

ArrayList two:

Item
Name
Count

Note: the lists are shuffled

I tried this:

foreach (string str1 in arraylistone)
                            {
                                if (arraylisttwo.Contains(str1))
                                {
                                    //return true;
                                }
                            }

But it says true if contains someone element

Upvotes: 0

Views: 58

Answers (3)

JuanR
JuanR

Reputation: 7803

There are many ways to skin a cat. Here is one using Linq's Join extension method:

var list1 = new[] { "Name",  "Item" };
var list2 = new[] { "Item", "Name", "Count" };
var join = list1.Join(list2, l1 => l1, l2 => l2, (l1, l2) => new { l1, l2 });
var allContained = join.Count() == list1.Count();

Just be careful with comparison of strings. There is an overload that takes an IEqualityComparer<TKey> to allow you to define how the keys are compared.

Update:

As Alex Leo has pointed out, you can use Intersect:

 var allContained = list1.Intersect(list2).Count() == list1.Count();

Much simpler and it also provides an IEqualityComparer<T> overload.

Upvotes: 1

NaDeR Star
NaDeR Star

Reputation: 655

Try something like this

var arrayOne = new string[4];
    arrayOne[0] = "Item1";
    arrayOne[1] = "Item2";
    arrayOne[2] = "Item3";
    arrayOne[3] = "Item4";

var arrayTwo = new string[4];
    arrayTwo[0] = "Item1";
    arrayTwo[1] = "Item2";
    arrayTwo[2] = "Item3";
    arrayTwo[3] = "Item4";

    var allItemIsThere = true;

    foreach (var one in arrayOne)
    {
        allItemIsThere = arrayTwo.Contains(one);
        if(!allItemIsThere)
        { break;}
    }

Upvotes: 1

Alex Leo
Alex Leo

Reputation: 2851

You could use Enumerable.Intersect. 

        var listA = new List<string> { "Name", "Item" };
        var listB = new List<string> { "Name", "Item","Count" };

        var c = listA.Intersect(listB).ToList();

Upvotes: 2

Related Questions