How to Return Dictionary As a Result From a LINQ Query in C#?

This article will provide a code snippet and explains how to return Dictionary as result from a LINQ Query in C#.

There are times when you want to retrieve only the ID(distinct) and the name from the database table using LINQ . In scenarios like this , one can use the ToDictionary method to place the necessary properties to the dictionary and return them.

Below is a sample sourecode demonstrating the usage of ToDictionary method in LINQ Query

public class BlockbusterMovie
{
public string Name { get; set; }
public int ID { get; set; }
}
public class BlockbusterMovies : List<BlockbusterMovie>
{
public BlockbusterMovies()
{
Add(new BlockbusterMovie { Name = "Vishwaroopam", ID = 1 });
Add(new BlockbusterMovie { Name = "Endhiran", ID = 2 });
Add(new BlockbusterMovie { Name = "Thuppaki", ID = 3 });
Add(new BlockbusterMovie { Name = "Mankatha", ID = 4 });
}
}

The BlockbusterMovies class has the collection of movies which is used in the below code snippet to return the dictionary based on the ID and Name.

private void Form1_Load(object sender, EventArgs e)

{

List<BlockbusterMovie> movies = new BlockbusterMovies();

var LstMovies = movies.ToDictionary(Field => Field.ID, mc => mc.Name);

}