How to find an element in c# Generic List

The following sample code demonstrates you how to find a matching element in the object list.

Let's say we have an object called Person with public properties PersonID, Name, Age, Gender as defined below.

using System.Collections.Generic.List;

public class Person
{
public int PersonID {get; set;}
public string Name {get; set;}
public int Age {get; set;}
public bool Gender {get; set;}
}

class program
{
public static void Main(string[] args)
{
// Let's say we have a method defined as dbAccess.GetPersons() to
//return all the records from Person table and populates the
//list object "persons" as shown below.
List persons = dbAccess.GetPersons();

int personIDToFind = 1234;
//Find person in persons list by PersonID using predicate
//"p=>p.PersonID == personIDToFind"
Person personByFindOperation = persons.Find( p=>p.PersonID == personIDToFind );

string personName = "Kiran"
//Find person in persons list by Name using predicate
//"p=>p.Name == personName"
Person personByFindOperation2 = persons.Find( p=>p.Name == personName );

}
}

Note: The Find method of List returns the first occurrence of the exact match within the entire System.Collections.Generic.List.

Code to Serialize Object in C# .Net

Please use the below method if you want to serialize any object. This method returns you a string which is XML consists of all public properties and public data members of the object passed. It perfectly works for any type of reference type object.


String SerializeObject(Object obj)
{
try
{
String XmlizedString = null;
MemoryStream memoryStream = new MemoryStream();

XmlSerializer xs = new XmlSerializer(obj.GetType());
XmlTextWriter xmlTextWriter = new XmlTextWriter(memoryStream, Encoding.UTF8);

xs.Serialize(xmlTextWriter, obj);
memoryStream = (MemoryStream)xmlTextWriter.BaseStream;
XmlizedString = UTF8ByteArrayToString(memoryStream.ToArray());
return XmlizedString;
}

catch (Exception e)
{
System.Console.WriteLine(e);
return null;
}
}