使用linq从班级获得的数据

debugcn 发表于 Dev

Rafał开发人员

班级

public partial class DT_createdRentalObject {

    private SimpleData masterDataField; -> Name

    private Address[] addressField; -> AddressName

    private Association[] associationField; -> AssociationName, AssociationId

}

如何用LINQ编写

 public string createdRentalObject(DT_createdRentalObject ro)
{
 var list = (from s in ro ...?
}

这个结构：

|名称| |地址名称| | AssociationName | | AssociationId |

拉法尔非洲TS 1

Rafal美国TA 2

拉法尔德国TS 1

拉法尔法国TA 2

杰登

尝试tis

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace ConsoleApplication1
{
    class Program
    {
        static void Main(string[] args)
        {
            Test test = new Test();
            var list = test.rentalObjects.Select(x => new
            {
                Name = x.masterDataField.data,
                AddressName = x.addressField.FirstOrDefault().address,
                AssociationName = x.associationField.FirstOrDefault().AssociationName,
                AssociationId = x.associationField.FirstOrDefault().AssociationId
            }).ToList();
        }
    }
    public class Test
    {
        public List<DT_createdRentalObject> rentalObjects { get; set; }
        public Test()
        {
            rentalObjects = new List<DT_createdRentalObject>() {
                new DT_createdRentalObject() {
                    masterDataField = new SimpleData() { data = "Rafal"},
                    addressField = new Address[] { new Address() {  address = "AFRICA" }},
                    associationField = new Association[] { new Association() {  AssociationName = "TS",   AssociationId = "1" }}
                },
                new DT_createdRentalObject() {
                    masterDataField = new SimpleData() { data = "Rafal"},
                    addressField = new Address[] { new Address() {  address = "USA" }},
                    associationField = new Association[] { new Association() {  AssociationName = "TA",   AssociationId = "2" }}
                },
                new DT_createdRentalObject() {
                    masterDataField = new SimpleData() { data = "Rafal"},
                    addressField = new Address[] { new Address() {  address = "GERMANY" }},
                    associationField = new Association[] { new Association() {  AssociationName = "TS",   AssociationId = "1" }}
                },
                new DT_createdRentalObject() {
                    masterDataField = new SimpleData() { data = "Rafal"},
                    addressField = new Address[] { new Address() {  address = "FRANCE" }},
                    associationField = new Association[] { new Association() {  AssociationName = "TA",   AssociationId = "2" }}
                },
            };

        }

        public partial class DT_createdRentalObject
        {
            public SimpleData masterDataField { get; set; } //-> Name
            public Address[] addressField { get; set; } //-> AddressName
            public Association[] associationField { get; set; } //-> AssociationName, AssociationId
        }
        public class SimpleData
        {
            public string data { get; set; }
        }
        public class Address
        {
            public string address { get; set; }
        }
        public class Association
        {
            public string AssociationName { get; set; }
            public string AssociationId { get; set; }
        }

    }
}

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