private void ViewModelChanged(object sender, DependencyPropertyChangedEventArgs e)
        {
            this.viewModel_ = this.DataContext as Excel_crsViewModel;

            //this.FxExchangeGrid_.Children.Clear();
            //this.FxExchangeGrid_.Children.Add(this.viewModel_.Excel_issueInfoViewModel_.view());

            this.swapLegFirstGrid_.Children.Clear();
            this.swapLegFirstGrid_.Children.Add(this.viewModel_.Excel_swapLegViewModel_[0].view());

            this.swapLegSecondGrid_.Children.Clear();
            this.swapLegSecondGrid_.Children.Add(this.viewModel_.Excel_swapLegViewModel_[1].view());
        }
        private void ViewModelChanged(object sender, DependencyPropertyChangedEventArgs e)
        {
            this.viewModel_ = this.DataContext as Excel_crsViewModel;

            //this.FxExchangeGrid_.Children.Clear();
            //this.FxExchangeGrid_.Children.Add(this.viewModel_.Excel_issueInfoViewModel_.view());

            this.swapLegFirstGrid_.Children.Clear();
            this.swapLegFirstGrid_.Children.Add(this.viewModel_.Excel_swapLegViewModel_[0].view());

            this.swapLegSecondGrid_.Children.Clear();
            this.swapLegSecondGrid_.Children.Add(this.viewModel_.Excel_swapLegViewModel_[1].view());
        }