Find row in datatable with specific id

Question

I have two columns in a datatable:

ID, Calls. 

How do I find what the value of Calls is where ID = 5?

5 could be anynu

Answer 1

You can use LINQ to DataSet/DataTable

var rows = dt.AsEnumerable()
               .Where(r=> r.Field("ID") == 5);

Since each row has a unique ID, you should use Single/SingleOrDefault which would throw exception if you get multiple records back.

DataRow dr = dt.AsEnumerable()
               .SingleOrDefault(r=> r.Field("ID") == 5);

(Substitute int for the type of your ID field)