wpf - Close Dialog with Prism Region Manager -

i have wpf/prism application in opened window using following code:

regionmanager.requestblockingdialognavigate(myviewmodel); 

how close window without using code behind?

thanks.

i achieved goal doing else. pass whole window parameter of closecommand , close viewmodel.

<button content="close" command="{binding closecommand}" commandparameter="{binding elementname=mywindow}" /> 

and in view model, did this:

    public delegatecommand<window> closecommand { get;  private set;}      public myviewmodel()     {         closecommand = new delegatecommand<window>(close);     }     public void close(window window)     {         window.close();     } 

i thought there in prism it. haven't found far.

thanks