How to loop through array using linq?

Question

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I have a grouped variable called groupValues
this groupValues has the following

var groupValues = allValues.Current.GroupBy(x => new { x.Id })
                   .Select(g => new
                   {
                      Id1 = g.Select(x => x.Id1),
                      Names = string.Join(", ", g.Select(x => 
                                x.Name).Distinct().ToList()),

                    allFields = g
});

now in the response
i want to retrieve this

"Values": [
        {
            "id": 2,
            "names": "name1, name2, name3",
            "totalPrice": "45",
             details:[
             {
              "name": "name1",
              "name_price": "25"
             }
             {
              "name": "name2",
              "name_price": "30"
             }
             {
              "name": "name3",
              "name_price": "null"
             }


        }
]

I'm having difficulty in retrieving the details in this format

What I have tried:

AllValues allValues = await service.getAllValues(request);

<pre> 
var groupValues = allValues.Current.GroupBy(x => new { x.Id })
                   .Select(g => new
                   {
                      Id1 = g.Select(x => x.Id1),
                      Names = string.Join(", ", g.Select(x => 
                                x.Name).Distinct().ToList()),

                    allFields = g
});

List<Value> valueList = new List<Value>();

foreach (var y in groupValues)
               {
                   var totalPrice = y.allFields.Select(x => x.Price).Sum();
                   valueList.Add(new Response(y.Names,totalPrice))

}

How to get the details part?

i made a class for details, but i don't know how to do it to appear in the response

Posted 25-Jun-21 1:21am

Member 14800672

Updated 25-Jun-21 3:11am

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Comments

Richard Deeming 25-Jun-21 7:25am

Not at all clear. We can't see your input data, and the grouped data doesn't match the required output structure.

Also, if you have two items with prices of 25 and 30, why would the total price be 45 instead of 55?

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gardnerp · Answer 1 · 2021-06-25T03:11:00

This may help. I am using classes here that match your definition above. Change as needed:

C#

public class NameAndPrice {
   public string name { get; set; }
   public decimal name_price { get; set; }
}

public class ValueAndDetails {
   public int id { get; set; }
   public List<string> names { get; set; }
   public decimal totalPrice { get; set; }
   public List<NameAndPrice> details { get; set; }
}

Now fill an instance of that class like this:

C#

var result = allValues.Current
   .GroupBy(x => x.Id)
   .Select(g => new ValueAndDetails {
      id = g.Key,
      names = string.Join(", ", g.Select(x => x.Name)).Distinct().ToList(),
      totalPrice = g.Sum(x => x.Price),
      details = g.Select(x => new NameAndPrice {
         name = x.Name,
         name_price = x.Price
      }).ToList()
   };