c# - ConfigurationSettings.AppSettings 已过时

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下面的代码工作正常:

string api_url = ConfigurationSettings.AppSettings["api-url"].ToString();

警告信息如下:

'System.Configuration.ConfigurationSettings.AppSettings' is obsolete: '"This method is obsolete, it has been replaced by System.Configuration!System.Configuration.ConfigurationManager.AppSettings"'

根据警告消息的建议，我尝试将 ConfigurationSettings.AppSettings 替换为 ConfigurationManager.AppSettings

string api_url = ConfigurationManager.AppSettings["api-url"].ToString();

现在出现一条错误消息，指出:

The name 'ConfigurationManager' does not exist in the current context

这些是导入的命名空间:

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Configuration;

请帮帮我。

最佳答案

不仅需要在ConfigurationManager.AppSettings["api-url"].ToString();前面加上System.Configuration还得加上对程序集 System.Configuration.dll 的引用。

这是类似问题的链接 The name 'ConfigurationManager' does not exist in the current context

关于c# - ConfigurationSettings.AppSettings 已过时，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/15589129/