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C# Querying With LINQ Now You're Querying Selecting, Projecting and Anonymous Types

Posted by shawn khah
shawn khah
15,082 Points

help plz

var birds = new[] { new { Name = "Pelican", Color = "White" }, new { Name = "Swan", Color = "White" }, new { Name = "Crow", Color = "Black" } }; var mysteryBird = new { Name = "Bird" , Color = "White", Sightings = 3 }; var matchingBirds = new { Name = BirdName.Name; Color = mysteryBird.Color };

CodeChallenge.cs 
var birds = new[] 
{ 
    new { Name = "Pelican", Color = "White" }, 
    new { Name = "Swan", Color = "White" }, 
    new { Name = "Crow", Color = "Black" } 
};
var mysteryBird   = new { Name = "Bird" , Color = "White", Sightings = 3 };
var matchingBirds = new {
    Name = BirdName.Name;
    Color = mysteryBird.Color
};

2 Answers

James Churchill
STAFF
James Churchill
Treehouse Teacher
James Churchill
James Churchill
Treehouse Teacher

Shawn,

The matchingBirds variable should hold the result of a LINQ, not another anonymous object. Your LINQ query should filter the list of birds and then project the results into a collection of anonymous objects.

Here's what that should look like:

var birds = new[] 
{ 
    new { Name = "Pelican", Color = "White" }, 
    new { Name = "Swan", Color = "White" }, 
    new { Name = "Crow", Color = "Black" } 
};
var mysteryBird   = new { Name = "Bird" , Color = "White", Sightings = 3 };
var matchingBirds = birds.Where(b => ???).Select(b => ???);

I've omitted part of the implementation... you'll need to replace the ??? bits with the actual code that is required.

Thanks ~James

shawn khah
shawn khah
15,082 Points
shawn khah
shawn khah
15,082 Points

thanks james