Log In

Come Join Us!

Are you a
Computer / IT professional?
Join Tek-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!

*Tek-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Linq getting selections using ToList not working

Linq getting selections using ToList not working

Linq getting selections using ToList not working

I have a collection of a class (List<EditGrid>). I am trying to find duplicates and found this online and it seemed pretty clean but I am getting an error:

Cannot convert type 'System.Collections.Generic.List<string>' to 'System.Collections.Generic.List<OrderManagement.EntityLayer.EditGrid>'

I tried this a couple of ways and got the same error.


List<EditGrid> duplicates = Selections.GroupBy(x => x.KTrace)
                             .Where(g => g.Count() > 1)
                             .Select(g => g.Key)

List<EditGrid> duplicates = (List<EditGrid>)Selections.GroupBy(x => x.KTrace)
                             .Where(g => g.Count() > 1)
                             .Select(g => g.Key)

Where is my generic List of string?

How can I get this to work?



RE: Linq getting selections using ToList not working

Remove the .Select line. You are basically telling the linq to select only the key, rather than the entire object.

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Tek-Tips Forums free from inappropriate posts.
The Tek-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Tek-Tips forums is a member-only feature.

Click Here to join Tek-Tips and talk with other members! Already a Member? Login

Close Box

Join Tek-Tips® Today!

Join your peers on the Internet's largest technical computer professional community.
It's easy to join and it's free.

Here's Why Members Love Tek-Tips Forums:

Register now while it's still free!

Already a member? Close this window and log in.

Join Us             Close