public DocumentTemplatePreviewViewModel(BackstageNewTabViewModel owner, string fileName)
 {
     ReadContentFromFile(fileName);
     Owner          = owner;
     NewFileCommand = new DelegateCommand <string>(OnCreateNewFile);
 }
 public DocumentTemplatePreviewViewModel(BackstageNewTabViewModel owner)
 {
     Owner          = owner;
     NewFileCommand = new DelegateCommand <string>(OnCreateNewFile);
 }