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List of operations obtaining the index of a list

 2 years ago
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List of operations obtaining the index of a list

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I have a class in my Windows application like so:

public class Pets
{
  String Name {get;set;}
  int Amount {get;set;}
}

In one of my other classes i made a List of that class like so.

List<Pets> myPets = new List<Pets>();
myPets.Add(new Pets{ Name = "Fish", Amount = 8});
myPets.Add(new Pets{ Name = "Dogs", Amount = 2});
myPets.Add(new Pets{ Name = "Cats", Amount = 2});

Is there a way i can get the Index of the Pets whos Name = "Fish"?

I realize i can do this

int pos = 0;

for(int x = 0; x<myPets.Count;x++)
{
    if( myPets[x].Name == "Fish")
    {
        pos = x;
    }
}

But in the case that i have ALOT of items in myPets it would take long to loop through them to find the one i am looking for. Is there another way to complete the task above. That would make my application run quicker? In the case that myPets has a lot of items in it.

If you want to find index only to access item of List you can use Dictionary instead.

var pets = new Dictionary<string, int>();
pets.Add("Dogs", 2);
pets.Add("Fish", 8);
int amount = pets["Fish"];

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