virtualization

About Data Virtualizatoin in WPF, the WPF: Data Virtualization is a good article. With using this, Data Virtualization was executed as good in my code but there is the one problem, which is that I cannot bind a property in ViewModel with SelectedItem of ItemsControl in View. If one item of data satisfies some condition while data loads, the one item will be set as a property in ViewModel and then it will be bound with SelectedItem of ItemsControl in View, but will not. My code about this is the following. About the types of IItemsProvider andVirtualizingCollection, please refer to the WPF:

I am confused with virtualization and private cloud computing. What do they serve for? Their purposes? Can they be combined, let say we build virtualized servers on private cloud? From what I understand, cloud computing embraces the idea of IaaS (infrastructure as a service). In other words, I could start with minimal number of bare metal servers and expand it as requirement needs, and those servers are consolidated into one big machine through divided computing and data storing. Being said that, can we build virtualization on the private cloud? For example, I might buy like 10 servers

I want to know about Virtualization in detail. But start from basics, like what is virtualization, with real world examples and scenarios. When ever I search, i got Virtualization technologies, but I want to learn and in fact know what exactly is virtualization, its types and all... Please help me in getting practical details of term "Virtualization" ewernli Virtualization is a big topic, but very roughly speaking there are three main levels of virtualization: OS virtualization with a type 1 hypervisor Virtual machine that run on an existing hardware/OS, e.g. VMWare High-level virtual machines

I fill the Datagrid with 250 rows. When the user scrolls down using the scrollbar (below 75% for example), I want to fetch the next 250 rows from the database, and so on. The idea is that the grid could have millions of results and we don't want to load them all, until the user requests them. Is there an existing mechanism for this? EDIT: Because there seem to be a lot of confusion: I'm not looking for the standard data virtualization solutions, I already use them . But they all require you to specify the number of 'virtual rows' in advance, and that query is to costly for me. The reason why

I wonder how virtualization software such as VirtualBox or VMWare Workstation works? How can they create a virtual environment that is taken as a separate computer by operating systems? I'm almost sure the answer to this question is very deep, but I'd be well satisfied with basic theory. How does VMWare work: http://www.extremetech.com/article2/0,2845,1624080,00.asp How does virtualizaton work: http://blog.tmcnet.com/voip-enterprise/tmcnet/how-does-virtualization-work-and-why-is-now-a-good-time-to-check-it-o.asp Server Virtualization FAQ http://www.itmanagement.com/faq/server-virtualization/