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While my company's main projects are still .NET 2.0 or even .NET 1.1,  I do work on some utilities in .NET 3.5. And I have found myself using LINQ more and more every day.

I quite like LINQ to SQL, but what I'm talking here is LINQ to Objects.

Here are some recent uses that save me quite a bit of code.

Get texts of selected items in ListView

   1:  var selectedAttachments = from ListViewItem item in listView1.SelectedItems select item.Text;

Get list of filenames in an array from a collection of objects

   1:  var attachments = from Outlook.Attachment attachment in selectedMail.Attachments
   2:                    select attachment.FileName;

To sort unsorted collection so I can bind it to ComboBox and items appear sorted

   1:  var sortedUsers = from user in users.users
   2:                    orderby user.fullname ascending
   3:                    select user; 


But sometimes LINQ can make you do stuff, your really don't need to do.

Concatenate strings in an array and separate them with ", "

   1:  args.Attachments.Aggregate((val1, val1) => val1 + ", " + val2)

There is an easier way, of course, as dr.T reminded me, while showing him my LINQ code. :)

   1:  string.Join(", ", args.Attachments)


Any tips and corrections are welcome. I'm still quite a n00b when it comes to LINQ!


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Posted on Friday, February 29, 2008 11:25 PM | Filed under: Developement |
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