无法更改PCL库目标框架 [英] Unable to alter PCL library Target Frameworks

问题描述

我正在运行Visual Studio 2012以及Xamarin.iOS，并具有各自的最新版本.我有可移植类库，在其中我想选择最新的"Xamarin.iOS"发行版作为构建目标(而不是MonoTouch).在Visual Studio中，我打开项目的属性，选择库"选项卡，然后单击目标框架"下的更改".但是，我无法修改任何复选框.我更改的所有复选框都会立即关闭更改目标框架"对话框.如果我更改了其中一个下拉列表(例如，从.NET 4.0+更改为4.5)，则当我单击确定"时，更改不会反映在目标框架"列表中.

I am running Visual Studio 2012 plus Xamarin.iOS with the latest version of each. I have Portable Class Libraries in which I want to select the latest "Xamarin.iOS" release as a build target (instead of MonoTouch). In Visual Studio I open up the Project's Properties, select the Library tab, and click on Change under Target Frameworks. However, I am unable to modify any of the checkboxes. Any checkbox I change instantly closes the "Change Target Frameworks" dialog. If I change one of the dropdowns (for example, change from .NET 4.0+ to 4.5) then when I go to click OK the changes do not get reflected in the Target Frameworks list.

有人知道如何解决此问题吗?

Anyone have any idea how to resolve this issue?

推荐答案

我能够通过更改csproj文件XML中的TargetFrameworkProfile来解决此问题.我在不再受支持的Profile104上，因此我手动删除了它，并将其留在XML中，然后能够重新添加配置文件目标(使用对话框将其放到Profile136之后).

I was able to resolve this by changing the TargetFrameworkProfile in the XML of the csproj file. I was on Profile104 which is no longer supported, so I manually removed this and left this blank in the XML, and then was able to re-add the profile targets (after using the dialog it put me on Profile136).

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