访问列表< Class>中的类的属性. [英] Accessing Property of Class in List<Class>

问题描述

我看到了很多类似的问题，但是没有一个直接的答案.我有一个 List< ClientEntry> .我想访问ClientEntry中的属性.我的代码如下:

I see a lot of similar questions but none with a direct answer. I have a List<ClientEntry>. I want to access properties in ClientEntry. My code looks like this:

class ClientEntry
{
    private string _clientName;
    private string _clientEmail;

    public void ClientEntry(string name, string email)
    {
        this._clientName = name;
        this._clientEmail = email;
    }

    public string ClientName
    {
        get
        {
            return _clientName;

        }
        set
        {
            _clientName = value;
        }
    }

    public string ClientEmail
    {
        get
        {
            return _clientEmail;
        }
        set
        {
            RegexUtilities Validator = new RegexUtilities();
            if (Validator.IsValidEmail(value))
            {
                _clientEmail = value;
            }
        }
    }
}

稍后:

private List<ClientEntry> clientList;

然后我将一堆ClientEntry添加到列表中.

I then add a bunch of ClientEntry's to the List.

如何访问clientList中项目的ClientName和ClientEmail属性?另外，如何检查列表中是否存在某些ClientName或ClientEmail属性?使用对象列表甚至可能吗?我知道dict可能会更好，但是我想看看是否可以使用List和具有属性的类来做到这一点.

How can I access the ClientName and ClientEmail properties for items in clientList? Also, how can I check for the existance of a certain ClientName or ClientEmail property within the List? Is this even possible with a list of objects? I know a dict would probably serve better, but I wanted to see if this could be done with a List and a class with properties.

推荐答案

您可以使用Linq使用 Any()

You can use Linq to look for values inside of a list using Any()

例如.

bool emailExists = clientList.Any(x=>x.ClientEmail == <email>);

要访问值，可以使用索引访问器(如果知道)，循环收集或使用 Where()进行搜索:

To access values, you can use a index accessor if you know it, loop the collection, or use Where() to search it:

var email = clientList[index].ClientEmail

或

foreach (var client in clientList)
{
    var email = client.ClientEmail
}

或

var email = clientList.Where(x=>x.ClientName == <clientName>).FirstOrDefault();

这篇关于访问列表< Class>中的类的属性.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！