Divide Sequence into Groups and Query using LINQ

Yesterday, I had blogged about Querying a Sequence using LINQ. Now let us say if this sequence was to be divided into smaller sequences/batches and then queried upon, here’s how we would do it using LINQ

We will divide the sequence we generated into a group of 10’s and find the minimum and maximum value in each group. Use the following code:

static void Main(string[] args)
var sequence = Enumerable.Range(200, 200).Select(x => x / 10f);

var grps = from x in sequence.Select((i, j) => new { i, Grp = j / 10 })
group x.i by x.Grp into y
select new { Min = y.Min(), Max = y.Max() };

foreach(var grp in grps)
Console.WriteLine("Min: " + grp.Min + " Max:" + grp.Max);

The query shown above first projects each element of a sequence into a new form and groups by 10. The results are shaped into an enumerable collection of anonymous objects with a property Min and Max. These values are then printed on the console, as shown below:


LINQ Sequence Grouping

About The Author

Suprotim Agarwal
Suprotim Agarwal, Developer Technologies MVP (Microsoft Most Valuable Professional) is the founder and contributor for DevCurry, DotNetCurry and SQLServerCurry. He is the Chief Editor of a Developer Magazine called DNC Magazine. He has also authored two Books - 51 Recipes using jQuery with ASP.NET Controls. and The Absolutely Awesome jQuery CookBook.

Follow him on twitter @suprotimagarwal.

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