[Solved] How convert IList<T> to List<T>

[Andrey]

Hello Telerik team!

private IList<PersonPredictedValueMethod> pvMethods { get; set; }

[Transient]
public List<PersonPredictedValueMethod> PVMethods
{
    get
    {
        if (pvMethods != null)
        {
            return (List<PersonPredictedValueMethod>)pvMethods;
        }
        return null;
    }
    set { pvMethods = value; }
}

In such case I have an exception

Unable to cast object of type 'Telerik.OpenAccess.TrackedList`1[PersonPredictedValueMethod]' to type 'System.Collections.Generic.List`1[PersonPredictedValueMethod]'

[Thomas]

Hello Andrey,

there is no cast possible, as not all IList<T> implementations are List<T>.  You must either expose the IList<T> interface in your classes (which will allow our change tracking to work then) or you have to copy the IList<T> into a new List<T>(). But this will effectively disable the change tracking, as we cannot detect modifications to the list.

Greetings,
Thomas
the Telerik team

[Brian Womack]

Do pvMethods.ToList() instead of casting it.