{"Element '_id' does not match any field or property of class."}

Little scum · Posted on 10/8/2016 4:17:28 PM

{"Element '_id' does not match any field or property of class."}

System.AggregateException: One or more errors occurred. ---> System.FormatException: Element '_id' does not match any field or property of class MongoDBCRUD.Program+BOSBourse. at MongoDB.Bson.Serialization.BsonClassMapSerializer`1.DeserializeClass(BsonDeserializationContext context)

[...]

at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at System.Runtime.CompilerServices.TaskAwaiter`1.GetResult() at MongoDBCRUD.Program.d__1.MoveNext() in C:\Users\amin-\Documents\Visual Studio 2015\Projects\MongoDBCRUD\ MongoDBCRUD\Program.cs:line 60<---

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public ObjectId _id { get; set; }

This must be there, and if there are fields in the database, the object must define what attributes, and the type of the attributes must be the same as the type stored in the database.

What a pit!!! Otherwise, an exception will be thrown

Little scum · Posted on 10/8/2016 5:30:53 PM

_id property must be there, otherwise an error will be reported when updating the data: "Element '_id' does not match any field or property of class".
public ObjectId _id; BsonType.ObjectId corresponds to MongoDB.Bson.ObjectId

{"Element '_id' does not match any field or property of class."}

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