How to build pivot table through linq using c#

linq, pivot

Solution

var query = from foo in db.Foos
            group foo by foo.Date into g
            select new {
                Date = g.Key,
                A = g.Where(x => x.Employee == "A").Sum(x => x.Job1),
                B = g.Where(x => x.Employee == "B").Sum(x => x.Job1),
                C = g.Where(x => x.Employee == "C").Sum(x => x.Job1),
                D = g.Where(x => x.Employee == "D").Sum(x => x.Job1),
                Total = g.Sum(x => x.Job1)
            };

You can also apply `OrderBy(x => x.Date)` to query.

Problem

I have got this datatable in my c# code: ``` Date | Employee | Job1 | Job2 | Job3 | ---------|----------|------|------|-------| 1/1/2012 | A | 1.00 | 1 | 1 | 1/1/2012 | B | 2.5 | 2 | 2 | 1/1/2012 | C | 2.89 | 1 | 4 | 1/1/2012 | D | 4.11 | 2 | 1 | 1/2/2012 | A | 3 | 2 | 5 | 1/2/2012 | B | 2 | 2 | 2 | 1/2/2012 | C | 3 | 3 | 3 | 1/2/2012 | D | 1 | 1 | 1 | 1/3/2012 | A | 5 | 5 | 5 | 1/3/2012 | B | 2 | 2 | 6 | 1/3/2012 | C | 1 | 1 | 1 | 1/3/2012 | D | 2 | 3 | 4 | 2/1/2012 | A | 2 | 2 | 2 | 2/1/2012 | B | 5 | 5 | 2 | 2/1/2012 | D | 2 | 2 | 2 | 2/2/2012 | A | 3 | 3 | 3 | 2/2/2012 | B | 2 | 3 | 3 | 3/1/2012 | A | 4 | 4 | 2 | ``` Now I want to create another DataTable which would look like this: ``` Job1 Employee | 1/1/2012 | 1/2/2012 | 1/3/2012 | 2/1/2012 | 2/2/2012 | ---------|----------|----------|----------|----------|----------| A | 1.00 | 3 | 5 | 2 | 3 | B | 2.50 | 2 | 2 | 5 | 2 | C | 2.89 | 3 | 1 | - | | D | 4.11 | 1 | 2 | 2 | | Total | 10.50 | 9 | 10 | 9 | 5 | ``` Please suggest how to make this pivot table using Linq and C#.

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