ListUtils.Filter<T> method

Filter list elements by specified condition.

public static IList<T> Filter<T>(IList<T> list, ICondition<T> cond)
Parameter Description
T The type of object to apply filter to.
list A list to process.
cond Condition used to filter the specified list.

Return Value

Filtered list.


Shows how to work with list util Filter method.

public void WorkWithListUtilsFilter()
    var project = new Project(DataDir + "Project2003.mpp");
    List<Filter> filters = project.TaskFilters.ToList();

    Assert.AreEqual(3, filters.Count, "Project.TaskFilters count");

    ListUtils.Filter(filters, new FilterByIndex(1));

    foreach (var filter in filters)
        Console.WriteLine("Name: " + filter.Name);
        Console.WriteLine("Filter Type: " + filter.FilterType);
        Console.WriteLine("Show In Menu: " + filter.ShowInMenu);
        Console.WriteLine("Show Related Summary Rows: " + filter.ShowRelatedSummaryRows);

public class FilterByIndex : ICondition<Filter>
    private readonly int index;

    public FilterByIndex(int index)
        this.index = index;

    /// <summary>
    /// Returns true if the specified object satisfy the conditions.
    /// </summary>
    /// <param name="el">The object to check.</param>
    /// <returns>True if the object satisfy the conditions.</returns>
    /// <inheritdoc />
    public bool Check(Filter el)
        return el.Index == this.index;

See Also