[英]Set and Get a collection in C#
我有兩個班級:組和項目。
public class Group
{
public string Name{ get; set; }
public List<Item> ItemList { get; set; }
}
然后項目
public class Item
{
public int ID{ get; set; }
public string Name{ get; set; }
public string Description{ get; set; }
public Group ItemGroup {get;set;}
}
每個小組表演都有一組項目。
以下代碼用於獲取特定組的項目列表,並且在Items類中的ItemGroup設置為字符串類型而不是組類型時有效。
public IEnumerable<Item> GetItemByGroup(string group)
{
return repository.GetAllItems().Where(
p => string.Equals(p.ItemGroup, group, StringComparison.OrdinalIgnoreCase));
}
如何通過Group類中設置的Name
屬性更改代碼以獲取組中項目的列表。
以及如何在Group類中設置項目的列表/集合
我認為這應該有效。 給它一個打擊
public IEnumerable<Item> GetItemByGroup(string group)
{
return repository.GetAllItems().Where(p =>p.ItemGroup.Name.Equals(group));
}
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
namespace ConsoleApplication2
{
class Program
{
static void Main(string[] args)
{
List<Item> list = new List<Item>();
Item i = new Item()
{
ID = 1,
Name = "Amit",
Description = "Test",
ItemGroup = new Group() { Name = "A" }
};
list.Add(i);
i = new Item()
{
ID = 2,
Name = "Amit1",
Description = "Test1",
ItemGroup = new Group() { Name = "A1" }
};
list.Add(i);
i = new Item()
{
ID = 3,
Name = "Amit11",
Description = "Test11",
ItemGroup = new Group() { Name = "A11" }
};
list.Add(i);
i = new Item()
{
ID = 4,
Name = "Amit111",
Description = "Test111",
ItemGroup = new Group() { Name = "A111" }
};
list.Add(i);
i = new Item()
{
ID = 9,
Name = "Amit4a",
Description = "Test4a",
ItemGroup = new Group() { Name = "A111" }
};
list.Add(i);
i = new Item()
{
ID = 5,
Name = "Amit5",
Description = "Test5",
ItemGroup = new Group() { Name = "A111" }
};
list.Add(i);
i = new Item()
{
ID = 6,
Name = "Amit6",
Description = "Test6",
ItemGroup = new Group() { Name = "A111" }
};
list.Add(i);
var list1 = list.Where(p => p.ItemGroup.Name.Equals("A111"));
// Console.Write(list1.Count());
foreach (var item in list1)
{
Console.WriteLine(string.Format("ID: {0} Name: {1} Description: {2} Group: {3}",item.ID,item.Name,item.Description,item.ItemGroup.Name));
}
Console.Read();
}
}
public class Group
{
public string Name { get; set; }
}
public class Item
{
public int ID { get; set; }
public string Name { get; set; }
public string Description { get; set; }
public Group ItemGroup { get; set; }
}
}
聲明:本站的技術帖子網頁,遵循CC BY-SA 4.0協議,如果您需要轉載,請注明本站網址或者原文地址。任何問題請咨詢:yoyou2525@163.com.