by Pieter Brinkman
23. June 2009 04:03
In this post I will give an example how to cast a GenericList to Dictionary.
This example will use the following Blogger class.
[code:c#]
public class Blogger
{
public string FirstName { get; set; }
public string LastName { get; set; }
public int Age { get; set; }
public string Blog { get; set; }
}
[/code]
The example will cast a List<Blogger> to a dictionary with key FirstName, Lastname and value the Age of the blogger.
[code:c#]
// DECLARE PERSONLIST
List<Blogger> personList = new List<Blogger>();
personList.Add(new Blogger { FirstName = "Pieter", LastName = "Brinkman", Age = 27, Blog = "http://blog.newguid.net" });
personList.Add(new Blogger { FirstName = "Mark", LastName = "van Aalst", Age = 26, Blog = "http://www.markvanaalst.com/" });
personList.Add(new Blogger { FirstName = "Bas", LastName = "Hammendorp", Age = 32, Blog = "http://www.hammendorp.net/" });
// CREATE NEW DICTIONARY FROM LIST
// with key FirstName + LastName and value Age
Dictionary<string, int> AgeDictionary =
personList.ToDictionary(x => x.FirstName + " " + x.LastName,
x => x.Age,
StringComparer.OrdinalIgnoreCase);
// GENERATE OUTPUT
foreach (KeyValuePair<string, int> item in AgeDictionary)
Response.Write("key: " + item.Key + " - value: " + item.Value + "<br />");
//// OUTPUT
//key: Pieter Brinkman - value: 27
//key: Mark van Aalst - value: 26
//key: Bas Hammendorp - value: 32
[/code]
Hope it helps.
Subscribe