前提是，先把要放在根目录下的文件都始终复制。
例如：我要把下图两个文件中FASimulator和netcoreapp3.1的文件生成到根目录，首先先把这两个文件下的文件夹都点开，按shift或者ctrl选中，右击属性，选择始终复制。这样生成的时候就能生成的根目录对应的文件夹下。这是前提。
然后双击项目，在配置文件里下配置如下代码，实现把FASimulator和netcoreapp3.1这两个文件夹下的任意文件，在生成的时候复制到根目录下或者复制到根目录指定的文件夹下的效果。
cs
<Target Name="CopySecsFilesToOutput" BeforeTargets="BeforeBuild">
<!-- 设定需要复制的文件 -->
<ItemGroup>
<Rockey4NDFiles Include="netcoreapp3.1\Rockey4ND.dll" />
<Rockey4NDFiles Include="netcoreapp3.1\Rockey4ND_X64.dll" />
<Rockey4NDFiles Include="netcoreapp3.1\apidsp_darwin.dylib" />
<Rockey4NDFiles Include="netcoreapp3.1\apidsp_windows.dll" />
<Rockey4NDFiles Include="netcoreapp3.1\apidsp_windows_x64.dll" />
<Rockey4NDFiles Include="netcoreapp3.1\hasp_net_core.dll" />
<Rockey4NDFiles Include="netcoreapp3.1\hasp_rt.exe" />
<Rockey4NDFiles Include="netcoreapp3.1\hasp_windows_24160.dll" />
<Rockey4NDFiles Include="netcoreapp3.1\hasp_windows_x64_24160.dll" />
<Rockey4NDFiles Include="netcoreapp3.1\haspvlib_24160.dll" />
<Rockey4NDFiles Include="netcoreapp3.1\haspvlib_24160.so" />
<Rockey4NDFiles Include="netcoreapp3.1\haspvlib_x86_64_24160.so" />
<Rockey4NDFiles Include="netcoreapp3.1\libapidsp_linux_arm64.so" />
<Rockey4NDFiles Include="netcoreapp3.1\libapidsp_linux_x86_64.so" />
<Rockey4NDFiles Include="netcoreapp3.1\libhasp_linux_arm64_24160.a" />
<Rockey4NDFiles Include="netcoreapp3.1\libhasp_linux_arm64_24160.so" />
<Rockey4NDFiles Include="netcoreapp3.1\libhasp_linux_armhf_24160.a" />
<Rockey4NDFiles Include="netcoreapp3.1\libhasp_linux_x86_64_24160.a" />
<Rockey4NDFiles Include="netcoreapp3.1\libhasp_linux_x86_64_24160.so" />
<Rockey4NDFiles Include="netcoreapp3.1\libRockey4ND.so" />
<Rockey4NDFiles Include="netcoreapp3.1\libRockey4ND.x86.a" />
<Rockey4NDFiles Include="netcoreapp3.1\libRockey4ND.x86.so.0.3" />
<Rockey4NDFiles Include="netcoreapp3.1\libRockey4ND.x86_64.a" />
<Rockey4NDFiles Include="netcoreapp3.1\libRockey4ND.x86_64.so.0.3" />
<Rockey4NDFiles Include="netcoreapp3.1\License.dat" />
</ItemGroup>
<!-- 执行文件复制操作 -->
<Copy SourceFiles="@(Rockey4NDFiles)" DestinationFolder="$(OutputPath)" /><!-- 放根目录下 -->
</Target>
<Target Name="Copylibcpsrtso" BeforeTargets="BeforeBuild">
<ItemGroup>
<libcpsrtsoFiles Include="netcoreapp3.1\cpsrt\lin\x64\libcpsrt.so" />
</ItemGroup>
<Copy SourceFiles="@(libcpsrtsoFiles)" DestinationFolder="$(OutputPath)cpsrt\lin\x64\" /><!--放根目录的cpsrt\lin\x64\下 -->
</Target>
<Target Name="Copylibcpsrtdll64" BeforeTargets="BeforeBuild">
<ItemGroup>
<libcpsrtdll64Files Include="netcoreapp3.1\cpsrt\win\x64\cpsrt.dll" />
</ItemGroup>
<Copy SourceFiles="@(libcpsrtdll64Files)" DestinationFolder="$(OutputPath)cpsrt\win\x64\" /><!--放根目录的cpsrt\win\x64\下 -->
</Target>
<Target Name="Copylibcpsrtdll86" BeforeTargets="BeforeBuild">
<ItemGroup>
<libcpsrtdll86Files Include="netcoreapp3.1\cpsrt\win\x86\cpsrt.dll" />
</ItemGroup>
<Copy SourceFiles="@(libcpsrtdll86Files)" DestinationFolder="$(OutputPath)cpsrt\win\x86\" /><!--放根目录的cpsrt\win\x86\下 -->
</Target>
<Target Name="FASimulator" BeforeTargets="BeforeBuild">
<ItemGroup>
<FASimulatorFiles Include="FASimulator\FASimulator Manual Ver 1.01 (EN).pdf" />
<FASimulatorFiles Include="FASimulator\FASimulator Manual Ver 1.01.pdf" />
<FASimulatorFiles Include="FASimulator\FASimulator_1.0.0.13\Config\SECS\GEM Format.txt" />
<FASimulatorFiles Include="FASimulator\FASimulator_1.0.0.13\Config\SECS\GEM Format_Host.txt" />
<FASimulatorFiles Include="FASimulator\FASimulator_1.0.0.13\Config\SECS\GEM300 Format.txt" />
<FASimulatorFiles Include="FASimulator\FASimulator_1.0.0.13\Config\SECS\GEM300 Format_Host.txt" />
<FASimulatorFiles Include="FASimulator\FASimulator_1.0.0.13\212121.fas" />
<FASimulatorFiles Include="FASimulator\FASimulator_1.0.0.13\Delta.DIAAuto.Simulator.Core.dll" />
<FASimulatorFiles Include="FASimulator\FASimulator_1.0.0.13\Delta.DIAAuto.Simulator.Core.pdb" />
<FASimulatorFiles Include="FASimulator\FASimulator_1.0.0.13\Delta.DIAAuto.Simulator.Log.dll" />
<FASimulatorFiles Include="FASimulator\FASimulator_1.0.0.13\Delta.DIAAuto.Simulator.Log.pdb" />
<FASimulatorFiles Include="FASimulator\FASimulator_1.0.0.13\Delta.DIAAuto.Simulator.SECS.dll" />
<FASimulatorFiles Include="FASimulator\FASimulator_1.0.0.13\Delta.DIAAuto.Simulator.SECS.pdb" />
<FASimulatorFiles Include="FASimulator\FASimulator_1.0.0.13\DIASECS.dll" />
<FASimulatorFiles Include="FASimulator\FASimulator_1.0.0.13\HVM412_DIAAuto_FASimulator.dll" />
<FASimulatorFiles Include="FASimulator\FASimulator_1.0.0.13\HVM412_DIAAuto64_FASimulator.dll" />
<FASimulatorFiles Include="FASimulator\FASimulator_1.0.0.13\License.dat" />
<FASimulatorFiles Include="FASimulator\FASimulator_1.0.0.13\log4net.dll" />
<FASimulatorFiles Include="FASimulator\FASimulator_1.0.0.13\Newtonsoft.Json.dll" />
<FASimulatorFiles Include="FASimulator\FASimulator_1.0.0.13\NLog.dll" />
<FASimulatorFiles Include="FASimulator\FASimulator_1.0.0.13\ProductLicenseChecker.dll" />
<!--<FASimulatorFiles Include="FASimulator\FASimulator_1.0.0.13\Rockey4ND.dll" />
<FASimulatorFiles Include="FASimulator\FASimulator_1.0.0.13\Rockey4ND_X64.dll" />-->
<FASimulatorFiles Include="FASimulator\FASimulator_1.0.0.13\SECSGEM_Eqp.fas" />
<FASimulatorFiles Include="FASimulator\FASimulator_1.0.0.13\SECSGEM_Host.fas" />
<FASimulatorFiles Include="FASimulator\FASimulator_1.0.0.13\SECSGEM300_Eqp.fas" />
<FASimulatorFiles Include="FASimulator\FASimulator_1.0.0.13\SECSGEM300_Host.fas" />
<FASimulatorFiles Include="FASimulator\FASimulator_1.0.0.13\SimulatorWorkbench.exe" />
<FASimulatorFiles Include="FASimulator\FASimulator_1.0.0.13\SimulatorWorkbench.exe.config" />
<FASimulatorFiles Include="FASimulator\FASimulator_1.0.0.13\SimulatorWorkbench.pdb" />
<FASimulatorFiles Include="FASimulator\FASimulator_1.0.0.13\SoftLicenseAPI.dll" />
<FASimulatorFiles Include="FASimulator\FASimulator_1.0.0.13\UniAuto.UniBCS.Core.Cryptography.dll" />
<FASimulatorFiles Include="FASimulator\FASimulator_1.0.0.13\UniAuto.UniBCS.Log.dll" />
<FASimulatorFiles Include="FASimulator\FASimulator_1.0.0.13\UniAuto.UniBCS.Message.dll" />
<FASimulatorFiles Include="FASimulator\FASimulator_1.0.0.13\UniTreeGridView.dll" />
<FASimulatorFiles Include="FASimulator\FASimulator_1.0.0.13\Unme.Common.dll" />
<FASimulatorFiles Include="FASimulator\FASimulator_1.0.0.13\WeifenLuo.WinFormsUI.Docking.dll" />
<FASimulatorFiles Include="FASimulator\FASimulator_1.0.0.13\WeifenLuo.WinFormsUI.Docking.pdb" />
<FASimulatorFiles Include="FASimulator\FASimulator_1.0.0.13\WeifenLuo.WinFormsUI.Docking.ThemeVS2015.dll" />
<FASimulatorFiles Include="FASimulator\FASimulator_1.0.0.13\WeifenLuo.WinFormsUI.Docking.ThemeVS2015.pdb" />
</ItemGroup>
<Copy SourceFiles="@(FASimulatorFiles)" DestinationFolder="$(OutputPath)" /><!-- 放根目录下 -->
</Target>1.复制到根目录下，例如：DestinationFolder="$(OutputPath)"，这是生成到根目录下
<Target Name="CopySecsFilesToOutput" BeforeTargets="BeforeBuild">
<!-- 设定需要复制的文件 -->
<ItemGroup>
<Rockey4NDFiles Include="netcoreapp3.1\Rockey4ND.dll" />
<Rockey4NDFiles Include="netcoreapp3.1\Rockey4ND_X64.dll" />
</ItemGroup>
<!-- 执行文件复制操作 -->
<Copy SourceFiles="@(Rockey4NDFiles)" DestinationFolder="$(OutputPath)" /><!-- 放根目录下 -->
</Target>2.复制到根目录指定的文件夹下 例如： DestinationFolder="$(OutputPath)cpsrt\lin\x64\"，这个是生成到根目录的cpsrt文件夹里的lin里的x64里。
<Target Name="Copylibcpsrtso" BeforeTargets="BeforeBuild">
<ItemGroup>
<libcpsrtsoFiles Include="netcoreapp3.1\cpsrt\lin\x64\libcpsrt.so" />
</ItemGroup>
<Copy SourceFiles="@(libcpsrtsoFiles)" DestinationFolder="$(OutputPath)cpsrt\\lin\\x64\\" /><!--放根目录的cpsrt\lin\x64\下 -->
</Target>注意：Name和SourceFiles不能重名