检查以下解决方法以访问.NET Framework应用程序中的App Configuration。
在Azure Portal =〉App Configuration =〉Configuration explorer中，创建新的Key-value。

• 安装以下NuGet Packages

Microsoft.Configuration.ConfigurationBuilders.AzureAppConfiguratio - Version 1.0.0
Microsoft.Configuration.ConfigurationBuilders.Environment - Version 2.0.0
System.Configuration.ConfigurationManager - Version 7.0.0

Web.config文件中的配置节：

<configSections>
    <section name="configBuilders" type="System.Configuration.ConfigurationBuildersSection, System.Configuration, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a" restartOnExternalChanges="false" requirePermission="false" />
  </configSections>

  <configBuilders>
    <builders>
      <add name="AzureAppConfig" mode="Greedy" connectionString="Endpoint=https://AppConfigName.azconfig.io;Id=XqdS-l2-s0:****/;Secret=****" type="Microsoft.Configuration.ConfigurationBuilders.AzureAppConfigurationBuilder, Microsoft.Configuration.ConfigurationBuilders.AzureAppConfiguration" />
      <add name="Environment" mode="Greedy" type="Microsoft.Configuration.ConfigurationBuilders.EnvironmentConfigBuilder, Microsoft.Configuration.ConfigurationBuilders.Environment" />
    </builders>
  </configBuilders>

  <appSettings configBuilders="Environment,AzureAppConfig">
    <add key="AppName" value=".NET Framework Sample" />
  </appSettings>

• • 正在读取配置值：**

在控制器中，

public ActionResult Index()
        {
            string FromAppConfig = System.Configuration.ConfigurationManager.AppSettings["TestApp:Settings:Message"];
            string FromWebConfig = System.Configuration.ConfigurationManager.AppSettings["AppName"];
            ViewBag.FromAppConfig = FromAppConfig;
            ViewBag.FromWebConfig = FromWebConfig;
            return View();
        }

在视图中. cshtml：

@{
    ViewBag.Title = "Home Page";
}

<div>
    <h2>  Value from App Configuration - @ViewBag.FromAppConfig</h2>
    <h2>  Value from Web.Config File - @ViewBag.FromWebConfig</h2>
</div>

输出：

引用自MSDoc