在Aero和Aero2中都存在相同的类型名称。

Question

我正在使用优秀的升级辅助工具从.net框架4.7.2升级到.net6。有时我会犯这样的错误：

错误CS0433类型'SystemDropShadowChrome‘在'PresentationFramework.Aero，Version=6.0.2.0，Culture=neutral，PublicKeyToken=31bf3856ad364e35’和'PresentationFramework.Aero2，Version=6.0.2.0，Culture=neutral，PublicKeyToken=31bf3856ad364e35‘中都存在

这种情况总是发生在..xaml文件中，并且总是发生在Aero和Aero2包中。这些都由Microsoft.WindowsDesktop.App.WPF (C:\Program框架)引用，升级助手在升级时将其添加到我的项目中。

当然，我不能从我的项目中删除Microsoft.WindowsDesktop.App.WPF框架，但是阅读关于错误CS0433的文章会提示我，应该有一种在包之间进行选择的方法。但我不知道怎么..。

有人能帮我吗？

Answer 1

你能给我看看你用过SystemDropShadowChrome的一些示例代码吗？

因为通常名称空间在xaml-file：xmlns:Themes="clr-namespace:Microsoft.Windows.Themes;assembly=PresentationFramework.Aero2"中声明如下：

我也面临着同样的问题(但我在代码隐藏中使用了SystemDropShadowChrome )，解决方案是这样的：https://github.com/dotnet/wpf/issues/765#issuecomment-555163388。

您需要修改.csproj-file，如下所示：

添加此属性组并选择要选择的主题(例如，Aero2) )

<PropertyGroup>
    <ReferenceWpfAeroTheme>false</ReferenceWpfAeroTheme>
    <ReferenceWpfAero2Theme>true</ReferenceWpfAero2Theme>
    <ReferenceWpfAeroLiteTheme>false</ReferenceWpfAeroLiteTheme>
    <ReferenceWpfClassicTheme>false</ReferenceWpfClassicTheme>
    <ReferenceWpfLunaTheme>false</ReferenceWpfLunaTheme>
    <ReferenceWpfRoyaleTheme>false</ReferenceWpfRoyaleTheme>
</PropertyGroup>

1. 将此目标添加到文件的末尾：

<Target Name="SelectWpfThemeAssembly" AfterTargets="ResolveAssemblyReferences" Condition="'$(ReferenceWpfAeroTheme)' == 'true'     Or&#xD;&#xA;                     '$(ReferenceWpfAero2Theme)' == 'true'    Or&#xD;&#xA;                     '$(ReferenceWpfAeroLiteTheme)' == 'true' Or&#xD;&#xA;                     '$(ReferenceWpfClassicTheme)' == 'true'  Or &#xD;&#xA;                     '$(ReferenceWpfLunaTheme)' == 'true'     Or&#xD;&#xA;                     '$(ReferenceWpfRoyaleTheme)' == 'true'">
        <ItemGroup>
            <_WpfThemeAssemblies Include="@(ReferencePath)" Condition="'%(ReferencePath.NuGetPackageId)'=='Microsoft.WindowsDesktop.App.Ref'  And &#xD;&#xA;                                   '%(ReferencePath.FileName)'=='PresentationFramework.Aero'">
                <Aliases Condition="'$(WpfAeroThemeAliases)'!=''">$(WpfAeroThemeAliases)</Aliases>
            </_WpfThemeAssemblies>

            <_WpfThemeAssemblies Include="@(ReferencePath)" Condition="'%(ReferencePath.NuGetPackageId)'=='Microsoft.WindowsDesktop.App.Ref'  And &#xD;&#xA;                                   '%(ReferencePath.FileName)'=='PresentationFramework.Aero2'">
                <Aliases Condition="'$(WpfAero2ThemeAliases)'!=''">$(WpfAero2ThemeAliases)</Aliases>
            </_WpfThemeAssemblies>

            <_WpfThemeAssemblies Include="@(ReferencePath)" Condition="'%(ReferencePath.NuGetPackageId)'=='Microsoft.WindowsDesktop.App.Ref'  And &#xD;&#xA;                                   '%(ReferencePath.FileName)'=='PresentationFramework.AeroLite'">
                <Aliases Condition="'$(WpfAeroLiteThemeAliases)'!=''">$(WpfAeroLiteThemeAliases)</Aliases>
            </_WpfThemeAssemblies>

            <_WpfThemeAssemblies Include="@(ReferencePath)" Condition="'%(ReferencePath.NuGetPackageId)'=='Microsoft.WindowsDesktop.App.Ref'  And &#xD;&#xA;                                   '%(ReferencePath.FileName)'=='PresentationFramework.Classic'">
                <Aliases Condition="'$(WpfClassicThemeAliases)'!=''">$(WpfClassicThemeAliases)</Aliases>
            </_WpfThemeAssemblies>

            <_WpfThemeAssemblies Include="@(ReferencePath)" Condition="'%(ReferencePath.NuGetPackageId)'=='Microsoft.WindowsDesktop.App.Ref'  And &#xD;&#xA;                                   '%(ReferencePath.FileName)'=='PresentationFramework.Luna'">
                <Aliases Condition="'$(WpfLunaThemeAliases)'!=''">$(WpfLunaThemeAliases)</Aliases>
            </_WpfThemeAssemblies>


            <_WpfThemeAssemblies Include="@(ReferencePath)" Condition="'%(ReferencePath.NuGetPackageId)'=='Microsoft.WindowsDesktop.App.Ref'  And &#xD;&#xA;                                   '%(ReferencePath.FileName)'=='PresentationFramework.Royale'">
                <Aliases Condition="'$(WpfRoyaleThemeAliases)'!=''">$(WpfRoyaleThemeAliases)</Aliases>
            </_WpfThemeAssemblies>


            <ReferencePath Remove="@(_WpfThemeAssemblies)" />

            <ReferencePath Include="@(_WpfThemeAssemblies)" Condition="('%(_WpfThemeAssemblies.FileName)'=='PresentationFramework.Aero' And '$(ReferenceWpfAeroTheme)'=='true')          Or &#xD;&#xA;                                ('%(_WpfThemeAssemblies.FileName)'=='PresentationFramework.Aero2' And '$(ReferenceWpfAero2Theme)'=='true')        Or &#xD;&#xA;                                ('%(_WpfThemeAssemblies.FileName)'=='PresentationFramework.AeroLite' And '$(ReferenceWpfAeroLiteTheme)'=='true')  Or &#xD;&#xA;                                ('%(_WpfThemeAssemblies.FileName)'=='PresentationFramework.Classic' And '$(ReferenceWpfClassicTheme)'=='true')    Or &#xD;&#xA;                                ('%(_WpfThemeAssemblies.FileName)'=='PresentationFramework.Luna' And '$(ReferenceWpfLunaTheme)'=='true')          Or&#xD;&#xA;                                ('%(_WpfThemeAssemblies.FileName)'=='PresentationFramework.Royale' And '$(ReferenceWpfRoyaleTheme)'=='true')" />
        </ItemGroup>
    </Target>

希望这能有所帮助！