Hello

The SelectedItem property of the treeview does not always contain what I would expect.
Examples:

1. Cancel Selection
   The ItemsSource property is bound to a collection containing A and B objects. I want that only the A object are selectable. The B objects are just for information. I use the following code:
   

   void radTreeView_PreviewSelected(object sender, Telerik.Windows.RadRoutedEventArgs e)

   {

   // get a reference to the item that will be selected

   RadTreeViewItem itemToSelect = e.OriginalSource as RadTreeViewItem;

   // check item that will be selected

   if (itemToSelect != null && itemToSelect.Item is B)

   {

   e.Handled = true;

   }

   }

   However, the SelectedItem property contains the B object afterwards. I would expect the SelectedItem property to be null.
2. Remove the selected item from the bound collection
   If I remove the currently selected item from the bound collection, then the node has disappeard as I expected, but the SelectedItem property still contains the removed object. I would expect, that the SelectedItem property always contains objects that are also in the ItemsCollection or null otherwise.

How should I handle these use cases? Binding to another property?

Best regards,
Franziska

Our latest Q3 2009 SP1 release (version 2009.3.1208) uses WCF RIA Services Beta for Visual Studio 2008 SP1. In other words, you should install this WCF RIA Services to be able to load our demos locally.

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Hello,

I need to change visual style of line chart. I want to change size and fill of circle points, lines between points may remain unchanged.

I'm not sure what control I should template, because changing template of whole telerik:Line destroys all the lines between points and also Y positions of points are wrong.

Some example, like in your Demo application (Custom Bar Template) would be great.

Thank you!

Hi Telerik

In the following xaml I have set up a RadGridView with two columns:


This xaml was placed in a window with the following code behind:


Now if you run this code you will notice that the two DataGrid columns behave differently when you are updating them. As I understand, when ActionOnLostFocus is set to "CommitEdit" the cell being edited should save its new value when it looses focus. The cells in the first column behave in this fashion, however those in the second column do not - Each reverts to its old value whenever it looses focus.

Why is this? How do I change the behavior of the cells in the second column so that each cell saves its new value when focus is transfered elsewhere?

Cheers

Bob

When I update a field in a WPF datagrid that's associated with a dataset the corresponding field in the underlying datatable is also modified after I issue a commitedit.

Hello,
I have a problem exporting to a text file while grouping the data.




When i press the save button the variable 's' gets the _correct_ value:
"\r\nHELLO1\r\nHELLO2\r\nHELLO3\r\nHELLO4\r\nHELLO5\r\n"

When i press the save button while grouping the column i get the following value on 's': 
"\r\nHELLO1\r\n\r\nHELLO1\r\nHELLO2\r\n\r\nHELLO1\r\n\r\nHELLO1\r\nHELLO2\r\nHELLO3\r\n\r\nHELLO1\r\n\r\nHELLO1\r\nHELLO2\r\n\r\nHELLO1\r\n\r\nHELLO1\r\nHELLO2\r\nHELLO3\r\nHELLO4\r\n\r\nHELLO1\r\n\r\nHELLO1\r\nHELLO2\r\n\r\nHELLO1\r\n\r\nHELLO1\r\nHELLO2\r\nHELLO3\r\n\r\nHELLO1\r\n\r\nHELLO1\r\nHELLO2\r\n\r\nHELLO1\r\n\r\nHELLO1\r\nHELLO2\r\nHELLO3\r\nHELLO4\r\nHELLO5\r\n\r\nHELLO1\r\n\r\nHELLO1\r\nHELLO2\r\n\r\nHELLO1\r\n\r\nHELLO1\r\nHELLO2\r\nHELLO3\r\n\r\nHELLO1\r\n\r\nHELLO1\r\nHELLO2\r\n\r\nHELLO1\r\n\r\nHELLO1\r\nHELLO2\r\nHELLO3\r\nHELLO4\r\n\r\nHELLO1\r\n\r\nHELLO1\r\nHELLO2\r\n\r\nHELLO1\r\n\r\nHELLO1\r\nHELLO2\r\nHELLO3\r\n\r\nHELLO1\r\n\r\nHELLO1\r\nHELLO2\r\n\r\nHELLO1\r\n\r\nHELLO1\r\nHELLO2\r\nHELLO3\r\nHELLO4\r\nHELLO5\r\n"

This means that i cant export a grid if the user is grouping. I thought that it would generate a sorted grid. This behavior also applies to ToHtml.

how can i make the Text inside  the GridViewDataColumn.Header wrap?

i think something can be done with the GridViewHeaderCell but i didn't managed to make it work

Hi everybody,

I am trying to set up RadGridView as a multi-column tree-view for a self-referencing scenario. I need to make grid columns to be aligned for all the child and parent rows. So if I drag a column gridline then I would expect the gridline to stay straight across all the rows, both parent and child. We are talking about the same column and I need it to behave like one. How can I do this?
Also, when I set frozen columns then child rows would keep sliding past the freeze line (I guess this is part of the same task: treat parent and child columns with the same name as the same visual column).

The final task is when I can get this 'same column' behavior then I need to be able to sort, filter, etc, i.e. do common grid operations.
(Note: I can sort on different columns in the 'SelfReference' example in the Examples_WPF.CS demo but the result of sorting does make much sense when you expand child rows).

Has anybody been able to address this task before? Could you please share your experience/knowledge?

Regards,
g8r.