Debugging LINQ on Windows Phone -

i new windows phone programming, , trying simple application run. however, have difficulties debugging.

on creation of database want insert default data:

        using (dodatacontext db = new dodatacontext(dbconnectionstring))         {             if (db.databaseexists() == false)             {                 // create local database.                 db.createdatabase();                  datetime datefields = new datetime(2013, 1, 1, 0, 0, 0);                  // prepopulate categories.                 db.languages.insertonsubmit(new dolanguage { code = "en", name = "english", lastupdate = datefields });                 db.languages.insertonsubmit(new dolanguage { code = "fr", name = "french", lastupdate = datefields });                 db.languages.insertonsubmit(new dolanguage { code = "es", name = "spanish", lastupdate = datefields });                  db.menuitems.insertonsubmit(new domenuitem { id = 3, title = "test 3", lastupdate = datefields, level = 1, action = "article/1", commonid = 1, section = "", icon = "", published = true, _languageid = 1 });                  // save categories database.                 db.submitchanges();             }         } 

however, on 'db.menuitems.insertonsubmit' application crashes , following console output (db.languages.insertonsubmit works fine):

the thread '' (0x18630716) has exited code 0 (0x0). thread '' (0x183809e2) has exited code 0 (0x0). thread '' (0x191d0b02) has exited code 0 (0x0).

there no info, , have no idea goes wrong. suggestions how debug problem?

_languageid = 1, it's not there in database yet when you're adding menu.

you can many ways, example save in 2 shots,

db.languages.insertonsubmit(new dolanguage { code = "en", name = "english", lastupdate = datefields });                 db.languages.insertonsubmit(new dolanguage { code = "fr", name = "french", lastupdate = datefields });                 db.languages.insertonsubmit(new dolanguage { code = "es", name = "spanish", lastupdate = datefields }); 

and call save changes , should work, should not have specify id of menu item.