Use LINQ to store in Hashtable

Question

Is it possible to use LINQ to get data from DB and store it in Dictionary. I can do LINQ and store it in a List<Class_B> and then iterate through the list and store it in Dictonary<Class_A,List<Class_B>>. But is it possible to directly store in the Dictionary?

Yes, use the `ToDictionary()` method. http://msdn.microsoft.com/en-us/library/system.linq.enumerable.todictionary%28v=vs.100%29.aspx — Ben Robinson, Dec 23 '14 at 17:05
I have edited your title. Please see, "[Should questions include “tags” in their titles?](http://meta.stackexchange.com/questions/19190/)", where the consensus is "no, they should not". — John Saunders, Dec 23 '14 at 17:07

Andy West · Answer 1 · 2014-12-23T17:29:31.767

System.Linq.Enumerable has a ToDictionary method.

Here's an example from dotnetperls.com:

using System;
using System.Collections.Generic;
using System.Linq;

class Program
{
    static void Main()
    {
        // Example integer array.
        int[] values = new int[] { 1, 3, 5, 7 };

        // First argument is the key, second the value.
        Dictionary<int, bool> dictionary = values.ToDictionary(v => v, v => true);

        // Display all keys and values.
        foreach (KeyValuePair<int, bool> pair in dictionary)
        {
            Console.WriteLine(pair);
        }
    }
}

Use LINQ to store in Hashtable

1 Answers1