Databases
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    <p>2 Ways to go about this:</p> <ol> <li><p>Have your all logic on the ViewModel (POCO Models).</p> <p>You'll have to have your ViewModel contain an Undo/Redo stack. How you implement it is up to you, but I'd suggest just having the Undo/Redo stacks be of <code>Tuple&lt;String, Object&gt;</code>. Store the property name and the value of the property. It's easier than managing clones. It also gives you the ability for a poor mans "dirtiness" check by seeing if the UndoStack has any items on it.</p></li> <li><p>Give your models some interfaces such as IUndoRedo (Rich Models).</p> <p>You'll have to have your ViewModels call interface methods to Undo/Redo, but the idea is the same... have an Undo/Redo stack that is composed of <code>Tuple&lt;String, Object&gt;</code>.</p> <p>If you do decide to want to have a rich model approach, you can look at existing frameworks out there such as <a href="http://www.lhotka.net/cslanet/" rel="nofollow">CSLA.Net</a> which is made for rich models, though it might be a bit more than what you'll really need. Just throwing it out there in case you want to have really rich models.</p></li> </ol> <hr> <p>A side note: You're ObservableCollection (ItemsSource) should be of ViewModels, not Models. Just throwing that out there in case you were using the Models. That is, don't do <code>ObservableCollection&lt;IEmployee&gt;</code>, but rather <code>ObservableCollection&lt;EmployeeViewModel&gt;</code>. It makes things easier, much easier and more reusable!</p> <p>Another side note: try to avoid the DataGrid. It makes developers wanna rip their hair out. I'd just roll out your own "Grid" with ListView :)</p>
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    1. PODataGrid and MVVM with Undo/Redo
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    1. COI suspect you are right about DataGrid =) I'll try ty play with ListView.
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      1. USPavel Voronin
 

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Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

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