[Solved] How to check if an array contains a value stored in a variable

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If you want to see if a value is in the array, use Contains function. If you want to check whether arrays are equal use StructuralComparisons.StructuralEqualityComparer. (https://docs.microsoft.com/en-us/dotnet/api/system.collections.structuralcomparisons.structuralequalitycomparer?view=netframework-4.7.2)

Code

static void Main(string[] args)
{
int compValue = 5;
int[] values0 = { 1, 2, 5, 7, 8 };

void ContainsValue(int[] array, int valueToTest)
{
    bool isContained = array.Contains(valueToTest);
    if (isContained)
        Console.WriteLine($"{valueToTest} is in array");
    else
        Console.WriteLine($"{valueToTest} is not in array");
}

void CompareArrays(int[] array, int[] arrayToTest)
{
    var comparer = StructuralComparisons.StructuralEqualityComparer ;
    var areEqual = comparer.Equals(array, arrayToTest);

    Console.WriteLine("-------------");
    if (areEqual)
    {
        Console.WriteLine("Arrays are equal");
    }
    else
    {
        Console.WriteLine("Arrays are not equal");
    }
}
ContainsValue(values0, compValue);
int[] compArray1 = { 1, 2, 5, 7, 8 };
CompareArrays(values0, compArray1);
int[] compArray2 = { 1, 2, 5, 15, 8 };
CompareArrays(values0, compArray2);
CompareArrays(compArray2, values0);
}

And the output:

5 is in array
-------------
Arrays are equal
-------------
Arrays are not equal
-------------
Arrays are not equal

solved How to check if an array contains a value stored in a variable