Last week I asked if anyone knew how to detect when a DataGrid is sorted so that you can remember the column and direction, so you can restore them when the app starts again. It turns out this can be done, but not in the way I described the problem.
There is no event in the DataGrid, DataView, DataTable or other bindable collection I can find that will tell you when a sort has been performed. You have to: trap the grid's Sorting <http://msdn.microsoft.com/en-us/library/system.windows.controls.datagrid.so rting.aspx> event identify the grid column (which might be a template) and its current direction (which is nullable) sort the data source yourself then set the column's SortDirection (to set the column header arrow) set e.Handled = true You get the column and direction in the event, so it's your responsibility to add a bit of plumbing to load and save a change of sort at a suitable time. I've done all this, and although it's not much total code, it took an irritating amount of time to get it dead-right. A lot of time was wasted searching through hundreds of utterly stupid, off-track or misleading web articles on the subject ... which I think is a growing problem these days as amount of "noise" articles is clogging search engines and wasting search time looking for rare "real" answers and advice. Greg
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