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ObjectManager.RegisterObject Method (Object, Int64, SerializationInfo, Int64, MemberInfo)

Registers a member of an object as it is deserialized, associating it with objectID, and recording the SerializationInfo.

Namespace:  System.Runtime.Serialization
Assembly:  mscorlib (in mscorlib.dll)

public void RegisterObject(
	Object obj,
	long objectID,
	SerializationInfo info,
	long idOfContainingObj,
	MemberInfo member


Type: System.Object

The object to register.

Type: System.Int64

The ID of the object to register.

Type: System.Runtime.Serialization.SerializationInfo

The SerializationInfo used if obj implements ISerializable or has a ISerializationSurrogate. info will be completed with any required fixup information and then passed to the required object when that object is completed.

Type: System.Int64

The ID of the object that contains obj. This parameter is required only if obj is a value type.

Type: System.Reflection.MemberInfo

The field in the containing object where obj exists. This parameter has meaning only if obj is a value type.


The obj parameter is null.


The objectID parameter is less than or equal to zero.


The objectID has already been registered for an object other than obj, or member is not a FieldInfo and member is not null.

You need to provide the member and idOfContainingObj parameters if obj is a ValueType because of the way fixups are performed on ValueType objects. The space to store the information for a ValueType is allocated inline with its containing object. However, when the ValueType is boxed to be registered with the ObjectManager, it loses the connection with its containing object. To guarantee that fixups occur in the instance of the ValueType stored in the containing object and not in the boxed instance, the ObjectManager retains some additional information.

ObjectManager retains information about both the object and its ID. Later during deserialization, GetObject can be used to discover whether a particular object ID has already been deserialized, or whether it is a forward reference to an object not yet deserialized.

.NET Framework

Supported in: 4.6, 4.5, 4, 3.5, 3.0, 2.0, 1.1

.NET Framework Client Profile

Supported in: 4, 3.5 SP1
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