How to replace normal foreach to linq ForEach?

Question

public static List<TDuplicate> ValidateColumnInList<TItem, TDuplicate>(List<TDuplicate> DuplicateExpression) where TDuplicate : DuplicateExpression
{
    List<TDuplicate> TempDuplicateExpression = new List<TDuplicate>();
    var itemProperties = typeof(TItem).GetProperties();
    foreach (var DplExpression in DuplicateExpression)
    {
        bool IsContainColumn = itemProperties.Any(column => column.Name == DplExpression.ExpressionName);
        if (!IsContainColumn)
        {
            TempDuplicateExpression.Add(DplExpression);
        }
    }
    return TempDuplicateExpression;
}

In the above section how to replace above foreach to linq ForEach.

Possible duplicate of [LINQ equivalent of foreach for IEnumerable](http://stackoverflow.com/questions/200574/linq-equivalent-of-foreach-for-ienumerablet) — sr28, Aug 26 '16 at 07:47
your slightly misunderstanding, Linq is a query language for selecting data it has no ForEach, the List class does have a for each as well as the Parallel class but neither of them is Linq — MikeT, Aug 26 '16 at 09:29

Adil Mammadov · Answer 1 · 2016-08-26T08:03:41.220

0

You do not need foreach or ForEach here. Below code should give you result:

var itemProperties = typeof(TItem).GetProperties();
List<TDuplicate> tempDuplicateExpression = DuplicateExpression
    .Where(m => !itemProperties.Any(column => column.Name == m.ExpressionName))
    .ToList();

return tempDuplicateExpression;

edited Aug 26 '16 at 08:03

answered Aug 26 '16 at 07:44

Adil Mammadov

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score 0 · Answer 2 · answered Aug 26 '16 at 08:10

You can get result by this simple way:

var result = DuplicateExpression.Where(n=>!itemProperties.Any(column => column.Name == n.ExpressionName)).ToList();

Or you can user ForEach like this:

DuplicateExpression.ForEach(n=>
    {
        bool IsContainColumn = itemProperties.Any(column => column.Name == n.ExpressionName);
        if (!IsContainColumn)
        {
            TempDuplicateExpression.Add(n);
        }
    }
)

How to replace normal foreach to linq ForEach?

2 Answers2