views:

1131

answers:

3

What's the easiest way to convert a BindingList<T> to a T[] ?

EDIT: I'm on 3.0 for this project, so no LINQ.

+1  A: 

I've changed this post since I noticed you tagged this with .net2.0. You could use a List since it has an ToArray() method.

public T[] ToArray<T>(BindingList<T> bindingList) {
    if (bindingList == null)
        return new T[0];

    var list = new List<T>(bindingList);
    return list.ToArray();
}

Note: This is indeed a less performant solution than the CopyTo solution that other members have shown. Use their solution instead, this one creates two arrays, the result and one internal to the List instance.

Simon Svensson
The question is tagged .net2.0
annakata
@annakata; *strictly* speaking, it is more relevant whether it is C# 2.0 or C# 3.0, as LINQ is still available with .NET 2.0 + C# 3.0 + a few fairly simple methods etc (or just LINQBridge).
Marc Gravell
@Tant102 - I preferred your original answer ;-p The List<T> approach is a bit overkill and (for large data, at least) a bit inefficient.
Marc Gravell
+3  A: 

In .Net 2 you have to use .CopyTo() method on your BindingList<T>

Grzenio
+5  A: 

Well, if you have LINQ (C# 3.0 + either .NET 3.5 or LINQBridge) you can use .ToArray() - otherwise, just create an array and copy the data.

T[] arr = new T[list.Count];
list.CopyTo(arr, 0);
Marc Gravell