c# - Do not map ReactiveUI properties in Entity Framework -

using entity framework code first, i've created objects store data in database. implement reactiveobject class reactiveui library in these objects, notifications whenever prorerty changes more responsive ui.

but implementing adds 3 properties, namely changed, changing , throwexceptions objects. don't think problem, when loading tables in datagrid, these column too.

is there way hide these properties? cannot manually define columns because have 1 datagrid tables, select combobox..

solution found below , here: is there way hide specific column in datagrid when autogeneratecolumns=true?

    void datatable_autogeneratingcolumn(object sender, datagridautogeneratingcolumneventargs e)     {         list<string> removecolumns = new list<string>()         {             "changing",             "changed",             "thrownexceptions"         };          if (removecolumns.contains(e.column.header.tostring()))         {             e.cancel = true;         }     } 

there few ways code first. first option annotate property notmappedattribute:

[notmapped] public bool changed { get; set; } 

now, information. because inheriting base class , not have access class' properties, cannot use this. second option use fluent configuration ignore method:

modelbuilder.entity<yourentity>().ignore(e => e.changed); modelbuilder.entity<yourentity>().ignore(e => e.changing); modelbuilder.entity<yourentity>().ignore(e => e.throwexceptions); 

to access dbmodelbuilder, override onmodelcreating method in dbcontext:

protected override void onmodelcreating(dbmodelbuilder modelbuilder) {     // .. model configuration here } 

another option create class inheriting entitytypeconfiguration<t>:

public abstract class reactiveobjectconfiguration<tentity> : entitytypeconfiguration<tentity>     tentity : reactiveobject {      protected reactiveobjectconfiguration()     {         ignore(e => e.changed);         ignore(e => e.changing);         ignore(e => e.throwexceptions);     } }  public class yourentityconfiguration : reactiveobjectconfiguration<yourentity> {     public yourentityconfiguration()     {         // configurations     } } 

advantages of method define baseline configuration of reactiveobject , rid of definitions redundancies.

more information on fluent configuration in links above.