C# - ListBox DataSource property and binding an ArrayList

Question

I created an ArrayList which contains KeyValuePair<string, string> objects. There are ListBoxes which I would like to bind to that list so that I do not have to fill them by iteration, copying at the same time all the data I have in the above mentioned ArrayList.

I am a Delphi programmer and in Delphi I would use the ListView control, set its OwnerData property to true and then use the OnData event to make a given item (with a specified index) display any piece of data from an array item having the same index. The OnData method gives me the currently displayed item as a parameter so I have access to e.g. its Index, Caption and SubItems properties. Basing on that index I can make the item display some data from an array item having the same index. If that array is modified, it is enough to refresh the ListView and/or set its Count property if the length of the array changed.

How to achieve the same goal in C# using the ListBox control? I set the listBox.DataSource property to myArrayList containing KeyValuePairs. Now I would like the listBox to display the keys of the KeyValuePairs objects.

Tim Robinson · Accepted Answer · 2009-05-03 10:03:27Z

9

.NET list boxes have this functionality built in. You've already set the DataSource property, so to display just the keys in the list, set:

listBox.DisplayMember = "Key";

answered May 3, 2009 at 10:03

Tim Robinson

54.9k12 gold badges127 silver badges141 bronze badges

Sign up to request clarification or add additional context in comments.

2 Comments

Cerebrus Over a year ago

Excellent! I'd add "listBox.ValueMember = "Value";" I hate lists without values! ;-)

Tim Robinson Over a year ago

You could do that too -- it depends whether you want listBox.SelectedValue to give you a KeyValuePair<string, string> or just a string.

Collectives™ on Stack Overflow

C# - ListBox DataSource property and binding an ArrayList

1 Answer 1

2 Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

2 Comments

Your Answer

Sign up or log in

Post as a guest

Related