CODEWITHSUNDEEP
c#linq
user6313890
user6313890

Reputation:

Filter list with Linq

I have a class : 

public class Car
{
    public string Color { get; set; }

        public string Speed { get; set; }
}

And one instance : 

List<Car> Cars = new List<Car>()
{
     new Car()
     {
           Color = "Green".
           Speed = "100"
      }, 
      new Car()
     {
           Color = "Yellow".
           Speed = "150"
      }
}

I want to filter this List

I do : 

List<Car> Conditions = new List<Car>()
{
     new Car()
     {
           Color = "Green".
           Speed = "100"
     }, 
     new Car()
     {
           Color = "Yellow".
           Speed = "100"
     }, 
     .......
}

How to browse my list and take only the car which corresponds at least to a condition with Linq?

Here, take only the first index of my list for example

My expected output : 

  List<Car> Cars = new List<Car>()
    {
         new Car()
         {
               Color = "Green".
               Speed = "100"
          }
    }

Because Color AND Speed match with one index of Conditions

Upvotes: 0

Views: 95

Answers (2)

tym32167
tym32167

Reputation: 4881

If you need set of cars

var result = Cars
    .Where(car=>Conditions.Any(cond=>
        cond.Speed == car.Speed && cond.Color == car.Color)).ToArray();

If you need only one car from set of matches to your condition

var result = Cars
    .FirstOrDefault(car=>Conditions.Any(cond=>
        cond.Speed == car.Speed && cond.Color == car.Color));

Upvotes: 1

Tim Schmelter
Tim Schmelter

Reputation: 460028

var FilteredCars = Cars
    .Where(car => Conditions.Any(c => car.Color == c.Color && car.Speed == c.Speed));

If Car would override Equals + GetHashCode in this way you could also use this:

var FilteredCars = Cars.Where(Conditions.Contains);

Upvotes: 2

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