I think, I can't, because I my soft is dll part of big application and you can't start it.
That's smthng strange, because I use DispatcherHelper.CheckBeginInvokeOnUI, so there is not another thread, who can create my datagrid.
Maybe I use an old version of DataGrid?
I use 3.5.9616.13400 and my license key starts with DGP32. What is the latest version I can use and where I can get it? Or, maybe I will buy new version? Or something else?