从包含基于整数列表的列表的列表中删除

Question

我有一个列表，基本上看起来像这样...

public class Area
{
public int  Id { get; set; }
public string Name { get; set; }
public List<ZipCodeAdresses> ListOfIncludedDestinations { get; set; }
}
public class ZipCodeAdresses
{
public int AreaId { get; set; }
public List<Person> AdressList { get; set; }
}
public class Person
{
public string MottagarNamn { get; set; }
public string Street { get; set; }
}


var intListToRemove = new List<int>(){2,3};
var list = new List<Area>();
var subList = new List<ZipCodeAdresses>();
var personList = new List<Person>
{
new Person() {MottagarNamn = "User 1"}, 
new Person() {MottagarNamn = "User 2"}
};
subList.Add(new ZipCodeAdresses(){AdressList = personList , AreaId = 1});
personList = new List<Person>
{
new Person() {MottagarNamn = "User 3"},
new Person() {MottagarNamn = "User 4"}
};
subList.Add(new ZipCodeAdresses() { AdressList = personList, AreaId = 2 });
list.Add(new Area(){Name = "List A", ListOfIncludedDestinations = subList});

subList = new List<ZipCodeAdresses>();
personList = new List<Person>
{
new Person() {MottagarNamn = "User 5"},
new Person() {MottagarNamn = "User 6"}
};
subList.Add(new ZipCodeAdresses() { AdressList = personList, AreaId = 3 });
personList = new List<Person>
{
new Person() {MottagarNamn = "User 7"},
new Person() {MottagarNamn = "User 8"}
};
subList.Add(new ZipCodeAdresses() { AdressList = personList, AreaId = 4 });
list.Add(new Area() { Name = "List B", ListOfIncludedDestinations = subList });

我需要能够从ListOfIncludedDestinations列表中删除 AreaId 等于intListToRemove中的任何整数在本例中为 2 和 3？

Answer 1

>List<T>包含一个方法RemoveAll，用于删除满足特定条件的所有条目。在您的情况下，它是：

foreach(var entry in list)
{
entry.ListOfIncludedDestinations.RemoveAll(x => intListToRemove.Contains(x.AreaId));
}

这将遍历您的list，并且对于每个条目，它会删除ListOfIncludedDestinations中具有AreadIdintListToRemove中的所有条目。

在线演示：https://dotnetfiddle.net/ialnPb

Answer 2

您应该添加此示例代码以将它们从列表中删除：

foreach (var i in list)
i.ListOfIncludedDestinations.RemoveAll(o => intListToRemove.Contains(o.AreaId));