Question

I have the following ListView:

and I’m creating a List<string> of the items I want a list of rows to remove from that ListView:

List<String> lst =new List<String>{"A1","A2"};

I know that I can delete the rows using iterating through the index and deleting the item using RemoveAt() function, but is there any way to do this using LINQ?

Answer 1

As far as A1/A2 are the keys, no LINQ is required:

foeach(var a in new[] { "A1", "A2" })
    lw.Items.RemoveByKey(a);

Why not?

---

But if you want to use LINQ at any cost, write you own extension method:

public static void ForEach<T>(this IEnumerable<T> collection, Action<T> action)
{
    foreach (var item in collection)
        action(item);
}

and use it this way:

new[] { "A1", "A2" }.ForEach(a => lw.RemoveByKey(a));

However keep in mind that this is a well-known but disputable approach.

btw, List<T> already has such extension method, but my works for any IEnumerable<T>:

new List<string> { "A1", "A2" }.ForEach(); // evokes List<T>.ForEach
new[] { "A1", "A2" }.ForEach(); // evokes my
new List<string> { "A1", "A2" }.AsEnumerable().ForEach(); // evokes my, I guess