How to perform group by operation on datatable in asp.net using c#

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Hello Sir,
I working on a web application, I am using a data table that can contain record like :

|MedicineID|| Quantity |
| 1 || 5 |
| 2 || 10 |
| 2 || 5 |
| 1 || 4 |
| 3 || 8 |

Please help me how could I perform group by on this table bases of MedicineID and count total Quantity of MedicineID

Thank You
Rahul

What I have tried:

how to perform Group By operation on Datatable in ASP.net Using C#

Posted 8-Feb-16 19:57pm

Rahul Newara

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Ashwini Dhale · Answer 1 · 2016-02-08T20:14:00

Solution 1

you try this

select sum(Quantity) from your table name group by medicineid

Posted 8-Feb-16 20:14pm

Ashwini Dhale

Comments

Rahul Newara 9-Feb-16 5:52am

Thank U

Dj@y · Answer 2 · 2016-02-08T21:29:00

Solution 2

Hi You can use

C#

dt = dt.Select("SELECT SUM(Quantity), MedicineID GROUP BY MedicineID);

this will help you

Posted 8-Feb-16 21:29pm

Dj@y

Comments

Rahul Newara 9-Feb-16 5:52am

Thank U

_Asif_ · Answer 3 · 2016-02-08T22:54:00

Solution 3

you can do this using Linq. Check this

c# - How do I use SELECT GROUP BY in DataTable.Select(Expression)? - Stack Overflow[^]

Posted 8-Feb-16 22:54pm

_Asif_

Comments

Rahul Newara 9-Feb-16 5:52am

Thank U