private async void BtnAddNewRow_OnClick(object sender, RoutedEventArgs e)
{
var dt = CurrentModel.GetNewRow();
var dialog = (BaseMetroDialog)this.Resources["PayementDetail"];
dialog.Title = "გადახდის დამატება";
dialog.DataContext = new PaymentDetailViewModel(dt, CurrentModel.ClientBalance);
await App.Current.CurrentMainWindow.ShowMetroDialogAsync(dialog);
}