Asp.net 为什么出站URL重写规则需要XmlSerializers.dll

我试图在web.config的“重写”部分启用OutboundRules，以将所有.html扩展转换为无扩展

但是，当我添加任何规则时，不管它包含什么，我都会收到一个500错误，说明找不到.XmlSerializers.dll。请注意，出错的是数据项目，而不是web项目。一旦我删除outboundRules部分，站点就会重新开始工作

HTTP Error 500.52 - URL Rewrite Module Error.

System.IO.FileNotFoundException: Could not load file or assembly '<data project>.XmlSerializers' or one of its dependencies. The system cannot find the file specified. File name: '<data project>.XmlSerializers' 
at System.Reflection.RuntimeAssembly._nLoad(AssemblyName fileName, String codeBase, Evidence assemblySecurity, RuntimeAssembly locationHint, StackCrawlMark& stackMark, IntPtr pPrivHostBinder, Boolean throwOnFileNotFound, Boolean forIntrospection, Boolean suppressSecurityChecks) 
at System.Reflection.RuntimeAssembly.LoadWithPartialNameInternal(AssemblyName an, Evidence securityEvidence, StackCrawlMark& stackMark) 
WRN: Assembly binding logging is turned OFF. To enable assembly bind failure logging, set the registry value [HKLM\Software\Microsoft\Fusion!EnableLog] (DWORD) to 1. Note: There is some performance penalty associated with assembly bind failure logging. To turn this feature off, remove the registry value [HKLM\Software\Microsoft\Fusion!EnableLog]. 

所以我的假设是OutboundRules总是需要XmlSerializer，但是它总是动态生成的。在这种情况下，它无法在运行中无声地生成，因此我们得到了那个错误

那么，首先，如何使序列化程序工作？第二，为什么需要它

 Error: Cannot deserialize type 'System.ComponentModel.DataAnnotations.DataTypeAttribute' because it contains property 'DataType' which has no public setter.