LINQ Extended method for Update Data

Extended Method

public delegate void Func(TArg0 element);

/// 
/// Executes an Update statement block on all elements in an IEnumerable sequence.
/// 
/// The source element type.
/// The source sequence.
/// The update statement to execute for each element.
/// The numer of records affected.
public static int Update(this IEnumerable source, Func update)
{
    if (source == null) throw new ArgumentNullException("source");
    if (update == null) throw new ArgumentNullException("update");
    if (typeof(TSource).IsValueType)
        throw new NotSupportedException("value type elements are not supported by update.");

    int count = 0;
    foreach (TSource element in source)
    {
        update(element);
        count++;
    }
    return count;
}

Example :

int intUpdate = lstItem
                .Where(a => a.ItemGroupId.Equals(lngItemGroupId))
                .Update(b =>
                            {
                                b.GroupName = strGroupName;
                                b.GroupLocation = strLocation;
                            }
                );