获取.Net Core / UWP中的环境变量

时间:2015-11-16 13:50:12

标签: c# uwp .net-core

我尝试将我们的.Net 4桌面应用程序迁移到UWP应用程序,这是一项艰巨的任务,没有像MSDN这样的文档。知道我有连接到现有Webservice的所有方法,但是使用的方法什么都不返回。

var envVars = Environment.GetEnvironmentVariables();
var host = Environment.GetEnvironmentVariable("COMPUTERNAME");
var user = Environment.GetEnvironmentVariable("USERNAME");
var userDnsDomain = Environment.GetEnvironmentVariable("USERDNSDOMAIN");

GetEnvironmentVariables的计数为0,而.Net中的旧方法不再存在:

var host = System.Net.Dns.GetHostName();
var user = Environment.UserName;

我需要计算机的名称,登录的用户名和域名。

是否有技巧或替代方案?

2 个答案:

答案 0 :(得分:3)

我的解决方案:

var users = await User.FindAllAsync(UserType.LocalUser);
var user = (string) await users.FirstOrDefault().GetPropertyAsync(KnownUserProperties.AccountName);
var domain = "";
var host = "";

if (string.IsNullOrEmpty(user))
{
    var domainWithUser = (string) await users.FirstOrDefault().GetPropertyAsync(KnownUserProperties.DomainName);
    domain = domainWithUser.Split('\\')[0];
    user = domainWithUser.Split('\\')[1];
}

var host = NetworkInformation.GetHostNames().First(x => x.Type == HostNameType.DomainName).DisplayName.Split('.')[0];

答案 1 :(得分:0)

此答案更像是警告

  1. 即使使用PInvoke,也无法在UWP中临时查询环境变量
  2. 您可以查询用户的信息,但是绝对不能保证User API将适用于多种用户类型,因此您需要针对空值进行防御性编码。 我不知道为什么这个API如此不可靠

这是一个示例MainPage和一个屏幕截图,显示了所有返回为空白的数据。

using System;
using System.Linq;
using Windows.System;
using Windows.UI.Xaml.Controls;

namespace App_1
{
    public sealed partial class MainPage : Page
    {
        public MainPage()
        {
            this.InitializeComponent();
            GetUserInfo();
        }

        public static async void GetUserInfo()
        {
            var users = await User.FindAllAsync(UserType.LocalUser);
            var user = await users.FirstOrDefault().GetPropertyAsync(KnownUserProperties.AccountName);
            var user_count = users.Count;
            var AccountName =
                await users[0].GetPropertyAsync(KnownUserProperties.AccountName);
            var DisplayName =
                await users[0].GetPropertyAsync(KnownUserProperties.DisplayName);
            var DomainName =
                await users[0].GetPropertyAsync(KnownUserProperties.DomainName);
            var FirstName =
                await users[0].GetPropertyAsync(KnownUserProperties.FirstName);
            var GuestHost =
                await users[0].GetPropertyAsync(KnownUserProperties.GuestHost);
            var LastName =
                await users[0].GetPropertyAsync(KnownUserProperties.LastName);
            var PrincipalName =
                await users[0].GetPropertyAsync(KnownUserProperties.PrincipalName);
            var ProviderName =
                await users[0].GetPropertyAsync(KnownUserProperties.ProviderName);
            var SessionInitiationProtocolUri =
                await users[0].GetPropertyAsync(KnownUserProperties.SessionInitiationProtocolUri);
            var User_Type = users[0].Type;
        }
    }
}

all_null