how to use where in in linq code example

Example: linq where c#

// The Where can be used to filter what you need, 
// if you want multiple items to be returned change 
// your variable to a list for example and replace FirstOrDefault with ToList
// For list of integers
List<int> myList = new List<int>(){1,2,3,4};
int singleItem = myList.Where(x => x == 1).FirstOrDefault();

// For list of custom object
List<CustomClassName> myList = new List<CustomClassName>()
{
  new CustomClassName(){ MyIntProp = 1, MyStringProp = "blah" },
  new CustomClassName(){ MyIntProp = 2, MyStringProp = "blah2" },
};
CustomClassName singleItem = myList.Where(x => x.MyIntProp == 1).FirstOrDefault();
CustomClassName singleItemTwo = myList.Where(x => x.MyStringProp == "blah2").FirstOrDefault();