Find element in List that contains a value

Question

I have a List lt MyClass gt  MyList where  public class MyClass       public string name   get  set        public string value   get  set        Given a name  I d like to get the corresponding value  I have it currently implemented as   MyList MyList FindIndex item   gt  String Compare item name   foo   0     0   value   Is there a cleaner way to do this

User · Answer

Using function Find is cleaner way   MyClass item   MyList Find item   gt  item name     foo    if  item    null     check item isn t null

User · Answer

I would use  Equals   for comparison instead of      Like so   MyClass item   MyList Find item   gt  item name Equals  foo       Particularly because it gives you options like StringComparison  which is awesome  Example   MyClass item   MyList Find item   gt  item name Equals  foo   StringComparison InvariantCultureIgnoreCase     This enables your code to ignore special characters  upper and lower case  There are more options

User · Answer

hi body very late but i am writing  if mylist contains value

User · Answer

Either use LINQ   var value   MyList First item   gt  item name     foo   value     This will just find the first match  of course  There are lots of options around this    Or use Find instead of FindIndex   var value   MyList Find item   gt  item name     foo   value    I d strongly suggest using LINQ though - it s a much more idiomatic approach these days    I d also suggest following the  NET naming conventions

User · Answer

You can use the Where to filter and Select to get the desired value   MyList Where i  gt i name    yourName  Select j  gt j value

User · Answer

Enumerable First returns the element instead of an index  In both cases you will get an exception if no matching element appears in the list  your original code will throw an IndexOutOfBoundsException when you try to get the item at index -1  but First will throw an InvalidOperationException    MyList First item   gt  string Equals  foo   item name   value

[c#] Find element in List<> that contains a value

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