How to Sort a bindinglist ?

sasikumar

Hi,

Please help in sorting the below list --

var varSource = new BindingList>();

varSource.Add(new KeyValuePair("key1", "value1"));
varSource.Add(new KeyValuePair("key4", "value4"));
varSource.Add(new KeyValuePair("key3", "value3"));
varSource.Add(new KeyValuePair("key5", "value5"));
varSource.Add(new KeyValuePair("key2", "value2"));

How do I sort the above list before binding it to a combo box so that the details are listed in ascending order in the combobox?
Please advise.

Thanks.

4 Replies

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Vulpes14y ago
Accepted answer
Notice though that you're just binding to an ordinary List there.

If you want to bind to a BindingList, as you originally intended, you can do:

combobox.DataSource = new BindingList>(sortedSource.ToList());
sasikumar14y ago
Thank you. I missed that part.
sasikumar14y ago
Hi,

Thanks for the response. But in the mean time, I just tried the below option and it worked.

var sortedSource = from col in varSource
orderby col.Value
select col;

combobox.datasource = sortedSource.tolist();

Thanks.
Vulpes14y ago
The only way to sort a BindingList directly is to create a derived class and then go through the rigmarole described in this MSDN link:

http://msdn.microsoft.com/en-us/library/ms132727.aspx

What I'd do instead is to add your KeyValuePairs to a List, sort it how you want (perhaps using LINQ) and then create a BindingList directly from this sorted List using the constructor overload which takes a generic IList argument.