vb.net - How to resolve SerializationException saying XElement is not serializable

Question

How do I resolve this error in VB,net

system.runtime.serialization.serializationexception: Type 'system.xml.linq.xelement' in Assembly 'system.xml.linq, version=4.0.0.0, culture=neutral, publickey=b77a5c561934e089' is not marked as serializable

I create a Grid that inherits from DataGridView. Oone of the Grid's properties is:

Public Property RowsXMLRegister As List(Of XElement) 
    Get 
        Return m_AllRowsXMLRegister 
    End Get 
    Set(value As List(Of XElement)) 
        m_AllRowsXMLRegister = value 
    End Set End 
Property 

When I try placing the Grid on the form the error comes up.