[UWP]支持两个版本的UWP [英] [UWP]supporting two version of UWP

问题描述

xmlns：Windows10version1809 =" http://schemas.microsoft.com/winfx/2006/xaml/presentation?IsApiContractPresent(Windows.Foundation.UniversalApiContract，7）"

xmlns:Windows10version1809="http://schemas.microsoft.com/winfx/2006/xaml/presentation?IsApiContractPresent(Windows.Foundation.UniversalApiContract, 7)"

使用< NavigationView Windows10version1809：PaneDisplayMode =" Top" .... />

using <NavigationView Windows10version1809:PaneDisplayMode="Top" .... />

导致应用程序在Windows 1803上崩溃

causes app to crash on windows 1803

我希望能够在1809上方导航到1803左上方 

I want to be able to have the navigation on the top on 1809 and to the left on 1803 

目标窗口：1809

目标最小值：1803

target min : 1803

推荐答案

这是预期的行为。如文档所述，PaneDisplayMode是1809版的新版本。请参阅：https：//docs.microsoft.com/en-us/windows/uwp/design/controls-and-patterns/navigationview#display-modes

This is expected behavior. As documented, PaneDisplayMode is new for version 1809. See: https://docs.microsoft.com/en-us/windows/uwp/design/controls-and-patterns/navigationview#display-modes

PaneDisplayMode属性需要Windows 10，版本1809（ SDK 17763 ）或更高版本，或
Windows UI库。

The PaneDisplayMode property requires Windows 10, version 1809 (SDK 17763) or later, or the Windows UI Library.

这为您提供了两类解决方案：

This gives you two categories of solutions:

如果您的用户界面需要设置PaneDisplayMode，那么：

If setting PaneDisplayMode is needed for your UI then:

• 使用Windows UI库中的Microsoft.UI.Xaml.NavigationPane控件而不是内置的Windows.UI.Xaml.NavigationPane控件

这将为您提供版本之间的一致用户界面。

This will give you a consistent UI between versions.

如果您的用户界面设置PaneDisplayMode不是必需的，或者您希望使用不同的用户界面每个版本然后（代码片段近似）：

If setting PaneDisplayMode isn't essential for your UI or if you'd prefer to have different UI for each version then (code snippets approximate):

• 根本不设置
• 使用
  条件Xaml 仅在定义了UniversalApiContract 7时设置它： 

• Don't set it at all
• Use Conditional Xaml to set it only if UniversalApiContract 7 is defined: 

<Page
    x:Class="ConditionalTest.MainPage"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:contract7Present="http://schemas.microsoft.com/winfx/2006/xaml/presentation?IsApiContractPresent(Windows.Foundation.UniversalApiContract,7)">

    <NavigationView contract7Present:DisplayMode="Top" />

</Page>

• 使用
  版本自适应代码，用于检查PaneDisplayMode是否存在并从代码中调用它后面




• Use Version adaptive code to check if PaneDisplayMode exists and call it from code behind

if (ApiInformation.IsPropertyPresent("Windows.UI.Xaml.Controls.NavigationView", "PaneDisplayMode")
{
    myNavigationView.PaneDisplayMode = NavigationViewPaneDisplayMode.Top;
}
   

- Rob




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