/// <summary>
/// 创建视图一，并显示
/// </summary>
private void CreateFirstView(object obj)
{
var model = new FirstViewModel();
WorkspaceMulti.Add(model);
ShowCurrentView(model);
}
/// <summary>
/// 显示视图一
/// </summary>
private void ShowFirstView(object obj)
{
if (_workspaceStory == null)
{
_workspaceStory = new ObservableCollection <WorkspaceViewModel>();
}
var model =
this._workspaceStory.FirstOrDefault(vm => vm is FirstViewModel)
as FirstViewModel;
if (model == null)
{
model = new FirstViewModel();
_workspaceStory.Add(model);
}
WorkspaceSingle = model;
}