System.TypeLoadException：无法从程序集'mscorlib加载'System.Reflection.Emit.DynamicMethod'类型，

使用时

var obj = JsonConvert.DeserializeObject（soapResponse）;

它没有为obj赋值 .

它与xamarin android正常工作 . 但显示xamarin ios的错误 .

{System.TypeLoadException：无法从程序集'mscorlib，Version = 4.0.0.0，Culture = neutral，PublicKeyToken = b77a5c561934e089'加载类型'System.Reflection.Emit.DynamicMethod' . 在Newtonsoft.Json.Serialization.DefaultContractResolver.GetDefaultCreator（System.Type createdType）[0x00000]在牛顿软件的c：\ Development \ Releases \ Json \ Working \ Newtonsoft.Json \ Src \ Newtonsoft.Json \ Serialization \ DefaultContractResolver.cs：685 .Json.Serialization.DefaultContractResolver.InitializeContract（Newtonsoft.Json.Serialization.JsonContract Contract ）[0x0008b]在C：\开发\发布\ Json的\工作\ Newtonsoft.Json的\ src \ Newtonsoft.Json \序列化\ DefaultContractResolver.cs：716在Newtonsoft.Json.Serialization.DefaultContractResolver.CreateObjectContract（System.Type objectType）[0x00007]在牛顿软件的c：\ Development \ Releases \ Json \ Working \ Newtonsoft.Json \ Src \ Newtonsoft.Json \ Serialization \ DefaultContractResolver.cs：361在Newtonsoft.Json的c：\ Development \ Releases \ Json \ Working \ Newtonsoft.Json \ Src \ Newtonsoft.Json \ Serialization \ DefaultContractResolver.cs：1013中的.Json.Serialization.DefaultContractResolver.CreateContract（System.Type objectType）[0x00100] .Serialization.DefaultCont ractResolver.ResolveContract（System.Type的类型）[0x0003e]在C：\发展\发布\的Json \工作\ Newtonsoft.Json \ SRC \ Newtonsoft.Json \序列化\ DefaultContractResolver.cs：242 Newtonsoft.Json.Serialization.JsonSerializerInternalReader . GetContractSafe（System.Type类型）[0x0000b]位于c：\ Development \ Releases \ Json \ Working \ Newtonsoft.Json \ Src \ Newtonsoft.Json \ Serialization \ JsonSerializerInternalReader.cs：130 at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.Deserialize（ Newtonsoft.Json.JsonReader读卡器，System.Type的的objectType，布尔checkAdditionalContent）[0x0000e]在C：\发展\发布\的Json \工作\ Newtonsoft.Json \ SRC \ Newtonsoft.Json \序列化\ JsonSerializerInternalReader.cs：138在Newtonsoft . 在Newtonoft的c：\ Development \ Releases \ Json \ Working \ Newtonsoft.Json \ Src \ Newtonsoft.Json \ JsonSerializer.cs：710中的Json.JsonSerializer.DeserializeInternal（Newtonsoft.Json.JsonReader reader，System.Type objectType）[0x00047] .Json.JsonSerializer.Deserialize（Newtonsoft.Json.J sondown阅读器，System.Type objectType）[0x00000]在C：\ Development \ Releases \ Json \ Working \ Newtonsoft.Json \ Src \ Newtonsoft.Json \ JsonSerializer.cs：689 at Newtonsoft.Json.JsonConvert.DeserializeObject（System.String值，System.Type类型，Newtonsoft.Json.JsonSerializerSettings设置）[0x0002d]在C：\ Development \ Releases \ Json \ Working \ Newtonsoft.Json \ Src \ Newtonsoft.Json \ JsonConvert.cs：846 at Newtonsoft.Json.JsonConvert .DeserializeObject [Object]（System.String值，Newtonsoft.Json.JsonSerializerSettings设置）[0x00000]在牛顿软件的c：\ Development \ Releases \ Json \ Working \ Newtonsoft.Json \ Src \ Newtonsoft.Json \ JsonConvert.cs：805 .Json.JsonConvert.DeserializeObject [Object]（System.String value）[0x00000]在TrxServices.Views的c：\ Development \ Releases \ Json \ Working \ Newtonsoft.Json \ Src \ Newtonsoft.Json \ JsonConvert.cs：742中 . 在d：\ DAta D Drive \ SelfDemo \ TrxServices \ TrxServices \ TrxServices \ Views \ Login.cs：300}中登录d__21.MoveNext（）[0x00372]