visual studio 2013-C#应用程序赢得'；t请求管理员权限

我有一个用Visual Studio Express 2013编写的c#windows窗体应用程序。该应用程序是一种需要管理员权限才能运行的工具。我想好了如何将清单文件添加到我的项目中，并将requestedExecutionLevel更改为requireAdministrator。在项目应用程序设置属性选项卡中，我添加的清单被选择嵌入到项目中。现在，当我单击开始启动程序时，它不会像预期的那样请求管理员权限。我没有关闭UAC。这是我的app.manifest文件的内容。

<?xml version="1.0" encoding="utf-8"?>
<asmv1:assembly manifestVersion="1.0" xmlns="urn:schemas-microsoft-com:asm.v1" xmlns:asmv1="urn:schemas-microsoft-com:asm.v1" xmlns:asmv2="urn:schemas-microsoft-com:asm.v2" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
  <assemblyIdentity version="1.0.0.0" name="MyApplication.app" />
  <trustInfo xmlns="urn:schemas-microsoft-com:asm.v2">
    <security>
      <requestedPrivileges xmlns="urn:schemas-microsoft-com:asm.v3">
        <!-- UAC Manifest Options
            If you want to change the Windows User Account Control level replace the 
            requestedExecutionLevel node with one of the following.
        <requestedExecutionLevel  level="asInvoker" uiAccess="false" />
        <requestedExecutionLevel  level="requireAdministrator" uiAccess="false" />
        <requestedExecutionLevel  level="highestAvailable" uiAccess="false" />
            Specifying requestedExecutionLevel node will disable file and registry virtualization.
            If you want to utilize File and Registry Virtualization for backward 
            compatibility then delete the requestedExecutionLevel node.
        -->
        <requestedExecutionLevel level="requireAdministrator" uiAccess="false" />
      </requestedPrivileges>
      <applicationRequestMinimum>
        <PermissionSet Unrestricted="true" ID="Custom" SameSite="site" />
        <defaultAssemblyRequest permissionSetReference="Custom" />
      </applicationRequestMinimum>
    </security>
  </trustInfo>
  <compatibility xmlns="urn:schemas-microsoft-com:compatibility.v1">
    <application>
      <!-- A list of all Windows versions that this application is designed to work with. 
      Windows will automatically select the most compatible environment.-->
      <!-- If your application is designed to work with Windows Vista, uncomment the following supportedOS node-->
      <!--<supportedOS Id="{e2011457-1546-43c5-a5fe-008deee3d3f0}"></supportedOS>-->
      <!-- If your application is designed to work with Windows 7, uncomment the following supportedOS node-->
      <!--<supportedOS Id="{35138b9a-5d96-4fbd-8e2d-a2440225f93a}"/>-->
      <!-- If your application is designed to work with Windows 8, uncomment the following supportedOS node-->
      <!--<supportedOS Id="{4a2f28e3-53b9-4441-ba9c-d69d4a4a6e38}"></supportedOS>-->
      <!-- If your application is designed to work with Windows 8.1, uncomment the following supportedOS node-->
      <!--<supportedOS Id="{1f676c76-80e1-4239-95bb-83d0f6d0da78}"/>-->
    </application>
  </compatibility>
  <!-- Enable themes for Windows common controls and dialogs (Windows XP and later) -->
  <!-- <dependency>
    <dependentAssembly>
      <assemblyIdentity
          type="win32"
          name="Microsoft.Windows.Common-Controls"
          version="6.0.0.0"
          processorArchitecture="*"
          publicKeyToken="6595b64144ccf1df"
          language="*"
        />
    </dependentAssembly>
  </dependency>-->
</asmv1:assembly>