CODEWITHSUNDEEP
c#asp.net-mvc-5
Yonela
Yonela

Reputation: 81

Converting from Data to Model

I want to Convert the data that searched into a model since it split because I'm using repository pattern. this is my code:

 public List<Supplier> Find(string name)
        {
            using (var suppre = new SupplierRepository())
            {
                return suppre.Find(x => x.Supplier_Name == name).ToList().Select(x => new SupplierView()
                {
                    Supplier_Id = x.Supplier_Id,
                    Supplier_Name = x.Supplier_Name,
                    Supplier_Address = x.Supplier_Address,
                    Email = x.Email,
                    Contact_No = x.Contact_No,
                    Contact_Person = x.Contact_Person,
                    Type_of_medicine = x.Type_of_medicine,
                    Product_ID = x.Product_ID
                });
            }
        }

and it gives me an error saying:

Cannot convert expression type System.Collections.Generic.List<Dept.Model.SupplierModel> to return type System.Collections.Generic.List<Dept.Data.Supplier>

Upvotes: 0

Views: 176

Answers (4)

Spha Dimba
Spha Dimba

Reputation: 1

You should try this:

public List<SupplierView> Find(string name)
    {
        using (var suppre = new SupplierRepository())
        {
            return suppre.Find(x => x.Supplier_Name == name).Select(x => new SupplierView()
            {
                Supplier_Id = x.Supplier_Id,
                Supplier_Name = x.Supplier_Name,
                Supplier_Address = x.Supplier_Address,
                Email = x.Email,
                Contact_No = x.Contact_No,
                Contact_Person = x.Contact_Person,
                Type_of_medicine = x.Type_of_medicine,
                Product_ID = x.Product_ID
            }).ToList();
        }
    }

the reason why it gave you an error was because your method signature stated you returning a List which is your data and you first have to do Select which is conversion statement before you return it to list.

Upvotes: 0

Joe
Joe

Reputation: 5487

In addition to what @mreyeros said, you will also need to move your ToList as Select returns a IEnumerable.

    public List<SupplierView> Find(string name)
    {
        using (var suppre = new SupplierRepository())
        {
            return suppre.Find(x => x.Supplier_Name == name).Select(x => new SupplierView()
            {
                Supplier_Id = x.Supplier_Id,
                Supplier_Name = x.Supplier_Name,
                Supplier_Address = x.Supplier_Address,
                Email = x.Email,
                Contact_No = x.Contact_No,
                Contact_Person = x.Contact_Person,
                Type_of_medicine = x.Type_of_medicine,
                Product_ID = x.Product_ID
            }).ToList();
        }
    }

Upvotes: 0

jhilden
jhilden

Reputation: 12429

I applaud your use of separate data models from edit models. I would recommend using a tool like AutoMapper to make some of this a lot easier (and automatic).

With automapper your method would look something like this:

public IEnumerable<SupplierView> Find(string name)
{
    using (var suppre = new SupplierRepository())
    {

        return suppre
            .Where(x => x.Supplier_Name == name)
            .Select(x => AutoMapper.Mapper.Map<SupplierView>(x));
    }
}

Upvotes: 0

mreyeros
mreyeros

Reputation: 4379

Your method signature is expecting to return a 

 List<Supplier>

but your actual return statement from your linq select is returning a 

 List<SupplierView>

you may simply need to change your return type to be 

 List<SupplierView>

Upvotes: 2

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