How to bind a datagridview with dictionary items

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How to bind dictionary items into datagridview in windows forms using C#.

For example

Consider

C#

Dictionary<string, double,double,double> d =new Dictionary<string,int>()
	{
	    {"Apple",255,0,0},
	    {"Orange",255,165,0},
	    {"Grapes", 238,130,238}
	    
	};

I want to add them in a datagridview.

How to do this

Posted 11-Mar-14 2:51am

KUMAR619

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Dave Kreskowiak · Answer 1 · 2014-03-11T03:55:00

First, that code won't compile because Dictionary will only take a single Key type and a single Value type, not a Key Type and 3 Value types.

Next, you can't bind a DGV to a Dictionary. A dictionary is 2 collections, one of keys and another of values. It's not a single collection of Key-Value.

You would have to convert the items in the dictionary to some other data structure, like a DataTable or List<t,> or any other type that implements one of the following interfaces: IList, IListSource, IBindingList or IBindingListView. The Dictionary<k,v> class does not do that.

Krunal Rohit · Answer 2 · 2014-03-11T03:55:00

Solution 1

Well you can use Array or List as a DataSource to your Grdiview. So get all the elements as a list and bind it to the grid.

C#

dataGridView.DataSource =  (from d in dictionary orderby d.Value select new { d.Key, d.Value}).ToList();

-KR

Posted 11-Mar-14 3:55am

Krunal Rohit

Comments

dcarl661 12-Apr-18 19:53pm

solution 1 is incomplete, i get this error on the second dictionary entry
At least one object must implement IComparable.