c# - How to bind to WPF View with two objects in a Many to Many Relationship? -

given have many many relationship in data access layer (using codefirst - ef) e.g.

public class report{    public int reportid {get;set;}    public string reportname {get;set;}    public list<reportkeyword> reportkeywords {get;set;} }  public class reportkeyword{    public int reportid {get;set;}    public int keywordid {get;set;} }  public class keyword{    public int keywordid {get;set;}    public string keywordname {get;set;}    public list<reportkeyword> reportkeywords {get;set;} } 

i need create user interface (wpf view) displays listview of reports , each report should display child list view of keywords. therefore can done in viewmodel best way of modelling viewmodel purpose. need create vm necessary properties? reportviewmodel similar properties want display off report object, including collection of keywords.

public class reportviewmodel : viewmodelbase<reportviewmodel> {     private string _reportname;     public string reportname     {         { return _reportname; }         set         {             _reportname = value;             notifypropertychanged(model => model.reportname);         }     }     private observablecollection<keyword> _keywords;     public observablecollection<keyword> keywords     {         { return _keywords; }         set         {             _keywords = value;             notifypropertychanged(model => model.keywords);         }     }  } 

i feel bit tedious. how populate collection display on grid? should when report selected, call method sets keywords collection? there better solution scenario?

in personal opinion, seem there already. however, provide view model collection of report objects, single property of type report bind selecteditem property of collection control instead of collection of keyword objects have already.

with view model, bind reports property listbox.itemssource in view , report property listbox.itemssource property, users can select various report objects. can bind reportkeywords property selected report object listbox in view:

<listbox itemssource="{binding reports/reportkeywords}" /> 

this should bind reportkeywords collection of current, or selected item in other listbox.