使用Visual Studios 2017将适用于System.Collections.Immutable的Nuget程序包添加到我的.NET Framework 4.6.1项目后，一堆.NET Framework DLL开始被复制到构建文件夹中。
如果我将System.Collections.Immutable的“ Copy Local”设置为false，则仍将复制框架DLL，但是如果我删除System.Collections.Immutable，则将不再复制它们。
这是DLL的列表：
Microsoft.Win32.Primitives.dll
Microsoft.WindowsAPICodePack.dll
Microsoft.WindowsAPICodePack.Shell.dll
Microsoft.WindowsAPICodePack.Shell.xml
Microsoft.WindowsAPICodePack.xml
netstandard.dll
System.AppContext.dll
System.Collections.Concurrent.dll
System.Collections.dll
System.Collections.NonGeneric.dll
System.Collections.Specialized.dll
System.ComponentModel.dll
System.ComponentModel.EventBasedAsync.dll
System.ComponentModel.Primitives.dll
System.ComponentModel.TypeConverter.dll
System.Console.dll
System.Data.Common.dll
System.Diagnostics.Contracts.dll
System.Diagnostics.Debug.dll
System.Diagnostics.FileVersionInfo.dll
System.Diagnostics.Process.dll
System.Diagnostics.StackTrace.dll
System.Diagnostics.TextWriterTraceListener.dll
System.Diagnostics.Tools.dll
System.Diagnostics.TraceSource.dll
System.Diagnostics.Tracing.dll
System.Drawing.Primitives.dll
System.Dynamic.Runtime.dll
System.Globalization.Calendars.dll
System.Globalization.dll
System.Globalization.Extensions.dll
System.IO.Compression.dll
System.IO.Compression.ZipFile.dll
System.IO.dll
System.IO.FileSystem.dll
System.IO.FileSystem.DriveInfo.dll
System.IO.FileSystem.Primitives.dll
System.IO.FileSystem.Watcher.dll
System.IO.IsolatedStorage.dll
System.IO.MemoryMappedFiles.dll
System.IO.Pipes.dll
System.IO.UnmanagedMemoryStream.dll
System.Linq.dll
System.Linq.Expressions.dll
System.Linq.Parallel.dll
System.Linq.Queryable.dll
System.Net.Http.dll
System.Net.NameResolution.dll
System.Net.NetworkInformation.dll
System.Net.Ping.dll
System.Net.Primitives.dll
System.Net.Requests.dll
System.Net.Security.dll
System.Net.Sockets.dll
System.Net.WebHeaderCollection.dll
System.Net.WebSockets.Client.dll
System.Net.WebSockets.dll
System.ObjectModel.dll
System.Reflection.dll
System.Reflection.Extensions.dll
System.Reflection.Primitives.dll
System.Resources.Reader.dll
System.Resources.ResourceManager.dll
System.Resources.Writer.dll
System.Runtime.CompilerServices.VisualC.dll
System.Runtime.dll
System.Runtime.Extensions.dll
System.Runtime.Handles.dll
System.Runtime.InteropServices.dll
System.Runtime.InteropServices.RuntimeInformation.dll
System.Runtime.Numerics.dll
System.Runtime.Serialization.Formatters.dll
System.Runtime.Serialization.Json.dll
System.Runtime.Serialization.Primitives.dll
System.Runtime.Serialization.Xml.dll
System.Security.Claims.dll
System.Security.Cryptography.Algorithms.dll
System.Security.Cryptography.Csp.dll
System.Security.Cryptography.Encoding.dll
System.Security.Cryptography.Primitives.dll
System.Security.Cryptography.X509Certificates.dll
System.Security.Principal.dll
System.Security.SecureString.dll
System.Text.Encoding.dll
System.Text.Encoding.Extensions.dll
System.Text.RegularExpressions.dll
System.Threading.dll
System.Threading.Overlapped.dll
System.Threading.Tasks.dll
System.Threading.Tasks.Parallel.dll
System.Threading.Thread.dll
System.Threading.ThreadPool.dll
System.Threading.Timer.dll
System.ValueTuple.dll
System.Xml.ReaderWriter.dll
System.Xml.XDocument.dll
System.Xml.XmlDocument.dll
System.Xml.XmlSerializer.dll
System.Xml.XPath.dll
System.Xml.XPath.XDocument.dll
由于它们都是.NET框架的一部分，因此无需将其复制到构建文件夹中。
还有其他人遇到过这个问题吗？