Wpf user control button command is not firing in viewmodel

Question

hi,

i have a user control in which there is a button. i wrote icommand in the viewmodel for the button to call some function. when i use this user control in some other page ,the user control button click is not working.

my xaml

Save

my view model private ICommand _insertNewNote; public ICommand InsertNewNote { get { if (_insertNewNote == null) { _insertNewNote = new RelayCommand( param => this.InsertNewExceptionNote()); } return _insertNewNote; } }

public void InsertNewExceptionNote() { //...
}

my problem is when i use this user control in some page like this

the user control is getting displayed in the page. but the button in the user control is not firing when i click it.

user control view model icommand is not at all initialized. please provide me a solution.

Thanks in advance.