Wpf datagrid binding not updating
Now, with this example, if you make changes to a persons surname, then click on the age cell and make changes there, the changes in surname are not reflected in the details view below: In the above example the user has entered the surname "Blunt" and has moved onto the age cell, however the changes are not reflected in the details view below. The reason is that when you bind to a Data Table, you are actually binding to your Data Table's Default View, which is of type Data View.
As a result, each row of your table will be bound to a Data Row View.
Let’s illustrate with a simple example: we want to display a list of products in a System. Data Error: 2 : Cannot find governing Framework Element or Framework Content Element for target element.
Binding Expression: Path=Show Price; Data Item=null; target element is ‘Data Grid Text Column’ (Hash Code=32685253); target property is ‘Visibility’ (type ‘Visibility’) But none of these workarounds seems to work, we always get the same result…
When you get that working THEN worry about this two collection thing you're working on. As far as I can tell I'm clearing the collection then loading back in "fresh" data. Also, I have tried removing the Up Date call at the end of the Add Customer method and have also tried moving the Customer.
I really can't figure out what you're aiming at with both a Customer collection and a copy of it as context. For now, until you get this worked out, just worry about keeping track of one collection. Why would the Clear() method have a negative impact?
I got to the point where I just created a new application with 1 entity and 1 combobox to display a collection and I still can't get the collection to update. This is why the view is not seeing the names you are adding.
property in WPF is extremely handy, because it is automatically inherited by all children of the element where you assign it; therefore you don’t need to set it again on each element you want to bind.
In my recent codeproject article on the Data Grid I described a number of techniques for handling the updates to Data Tables which are bound to the grid.
These examples all worked on the assumption that you want to keep your database synchronised with the Data Grid, with changes being committed on a row-by-row basis, i.e.
You need to replace the entire “Expense” object for you to see the collection change firing up.
The ninety-third part of the Windows Presentation Foundation Fundamentals tutorial continues to look at data binding using the Data Context property.