Casting an Item Collection from a listbox to a generic list

Jacob_56564 0
Viewed 37773

I want to find a better way of populating a generic list from a checkedlistbox in c#.

I can do the following easily enough:

List<string> selectedFields = new List<string>();

foreach (object a in chkDFMFieldList.CheckedItems) {
         selectedFields.Add(a.ToString());
         }

There must be a more elagent method to cast the CheckedItems collection to my list.

list casting listbox c#
3 Answers

Try this (using System.Linq):

OfType() is an extension method, so you need to use System.Linq

List<string> selectedFields = new List<string>();
selectedFields.AddRange(chkDFMFieldList.CheckedItems.OfType<string>());

Or just do it in one line:

List<string> selectedFields = chkDFMFieldList.CheckedItems.OfType<string>().ToList();
Matt_Hamilton_6150

If you don't have access to LINQ then there isn't a more elegant way since you're performing a second operation on the list items (calling ToString()) in addition to populating the selectedFields collection.

user_531620
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