通过列表< T>提取项目. List< T> [英] Extracting Items over an List<T> of List<T>

问题描述

我正在尝试从List<T>的List<T>中检索记录，并寻求您的帮助.

I am trying to retrieve records from a List<T> of List<T> and seek your help in getting it.

我正在尝试获取overdues.Accounts.AccountId = 'JKB1'处的项目，以及如何在下面的列表项上进行操作.

I am trying to fetch items where overdues.Accounts.AccountId = 'JKB1' and how can i do it over the below List Items.

public class OverdueModel
    {
        public string Slab { get; set; }
        public double Value { get; set; }
        public double Percentage { get; set; }
        public List<OverdueSlabAccounts> Accounts { get; set; }
    }

    public class OverdueSlabAccounts
    {
        public string AccountId { get; set; }
        public string AccountName { get; set; }
        public string SalesCode { get; set; }
        public string Value { get; set; }
        }


void Main(){
    List<OverdueModel> overdues = new List<OverdueModel>();
    List<OverdueSlabAccounts> accounts = new List<OverdueSlabAccounts>();

    //For T3
    accounts.Clear();
    accounts.Add(new OverdueSlabAccounts()
        {
            AccountId = "JKB1",
            AccountName = "JKB1",
            SalesCode = "JKB",
            Value = "500"
        });

    accounts.Add(new OverdueSlabAccounts()
        {
            AccountId = "JKB2",
            AccountName = "JKB2",
            SalesCode = "JKB",
            Value = "500"
        });

    overdues.Add(new OverdueModel()
    {
        Slab = "T3",
        Value = 1000,
        Percentage = 0,
        Accounts = accounts
    });

    //For T4
    accounts.Clear();
    accounts.Add(new OverdueSlabAccounts()
        {
            AccountId = "JKB1",
            AccountName = "JKB1",
            SalesCode = "JKB",
            Value = "1000"
        });

    overdues.Add(new OverdueModel()
    {
        Slab = "T4",
        Value = 1000,
        Percentage = 0,
        Accounts = accounts
    });

}

推荐答案

为此，您可以结合使用Where和Any:

You can use Where and Any in combination for this :

var result = overdues
                .Where(overdue => overdue.Accounts
                                     .Any(account => account.AccountId == "JKB1"));

这将过滤与任何帐户相关联的AccountId JKB1

This will filter those overdues for which associated any Account has AccountId JKB1

这篇关于通过列表< T>提取项目. List< T>的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！