CODEWITHSUNDEEP
c#.netlinqlinq-to-sql
Jonathan
Jonathan

Reputation: 12025

Retrieve two values in the same linq query

I'm starting with linqToSql and I still have some problems making my queries.

For example, I want to retrieve in the same query two values, a subset of elements, and an integer with the count of the elements. This is how I did it separately:

  int totalElements;
  IEnumerable<ClsTax> result;
  result = (from t in db.tax 
           select new ClsTax { Tax = t.tax1, Increase = t.increase }).Take(25);

  totalElements = (from t in db.tax 
             select new ClsTax { Tax = t.tax1, Increase = t.increase }).Count();

As you can see, I can't use result.count() because I used Take(25) to obtain only the firsts 25 elements, and I want to know how many elements are in the database.

Are there any way to obtain both values using only one linq query?

Thanks!

Upvotes: 0

Views: 183

Answers (2)

user191152
user191152

Reputation:

How about:

var all = (from t in db.tax select new ClsTax { Tax = t.tax1, Increase = t.increase });
var count = all.Count();
var result = all.Take(25);

bit simpler?

Upvotes: 3

k0ni
k0ni

Reputation: 2467

Try this:

var result = (from t in db.tax group t by t.ID into g select new { Tax = g.First().tax1, Increate = t.First().Increase, TotalElements = g.Count() });

Upvotes: 1

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