using collectionbase derivative as datasource

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If I define my own classes for an object "Test" and a collection of those
objects "TestCollection", what do I need to add to the class to let me set
the collection as a datasource for a listbox and have it automatically
update whenever an item is added/edited or removed from the collection?

Here are the classes:

public class Test
{
private int index;
private string value;

public Test(int index, string value)
{
this.index = index;
this.value = value;
}

public int Index
{
get
{
return index;
}
}

public string Value
{
get
{
return value;
}
}

public override string ToString()
{
return value;
}

}


public class TestCollection : CollectionBase
{
public int Add(Test test)
{
return base.List.Add(test);
}

public Test this[int i]
{
get
{
return (Test)base.List[i];
}
set
{
base.List[i] = value;
}
}

}

Thanks


.

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