Binaries are added to /bin without a reference, why?

Question

I am using a custom built NuGet package with a set of binaries from DevExpress. Whenever I build the project from Visual Studio, a lot of "extra" DevExpress binaries, that I have not added a reference too, is also added to the bin folder.

I have installed a DevExpress suite of some sort so it might be that some of the GAC'ed binaries are added, but why ? I do not wish to have these binaries cluttering my bin folder.

VS references:

Bin folder:

Answer 1

可能是程序集知道其依赖关系。 Assembly Explorer向您显示哪个：

Answer 2

除了Rolf的回答。

如果在项目中将引用设置为“本地”，则dll将会移动到输出文件夹（\ bin）

在项目中，这些报酬将带有<private>True</Private>标签：

fx：

<Reference Include="log4net, Version=2.0.8.0, ...>
  <HintPath>..\packages\log4net.2.0.8\lib\net40-full\log4net.dll</HintPath>
  <Private>True</Private> <-- HERE
</Reference>