Note : Cet article a été publié à l’origine en 2011. Certaines étapes, commandes ou versions de logiciels ont pu changer. Consultez la documentation actuelle de .Net pour les informations les plus récentes.

Prérequis

Avant de commencer, assurez-vous d’avoir :

• Visual Studio or .NET CLI installed
• .NET Framework or .NET Core SDK
• Basic C# programming knowledge

How to: Initialize a Dictionary with a Collection Initializer

Sometimes in your project you want to initialize a Dictionary or other sort of collection at the declaration level so you don’t have to manually use the .add() methods and write a separate method in which to execute them. A prime example is a dictionary that is going to be static and used across the entire application and you don’t expect it to change. The code below offers an example of how to initialize a dictionary when you’re declaring the variable:

Dictionary<int, StudentInfo> students = new Dictionary<int, StudentInfo>()
{
    { 111, new StudentInfo {FirstName="Sachin", LastName="Karnik", PhoneNumber="123-456-7890"}},
    { 112, new StudentInfo {FirstName="Dina", LastName="Salimzianova", PhoneNumber="123-456-7890"}},
    { 113, new StudentInfo {FirstName="Andy", LastName="Ruth", PhoneNumber="123-456-7890"}}
};


StudentInfo

Résumé

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