Questions on UI for WPF Forum

2 answers

204 views

Hi,

I am using a RadTreeListView and want to change the rowstyle of the TreeListViewRow. I was able to achieve this using Blend but when I applied the new rowstyle into my radtreelistview somehow the expander button is not working as expected even if I didn't change anything to my new style. When I collapsed an expanded row and then expand it again, the expander button appears even if a row is not a parent. And also all the expander buttons now stays on the left hand side even if the row is indented.

Steps to reproduce:
1. Add new style to RadTreeListView rowstyle (I copied the TreeListViewRow style using Blend 4)
2. Expand/collapse a parent row then expand again

Please help.

Thanks in advance,
Jo

TreeListView

answered on 01 Nov 2011

5 answers

98 views

Align aggregated results with related columns

Hi,

How can I align results of aggregated functions to columns in table? In my particular case I have GridView with columns for each hour (H1-H24) and few other columns like City, Country, etc. User is able to group data by City and Country column. When grouping is on I would like to display in group header result of aggregated sum function fore each hour column H1-H24, and I have to huge problems:

Results width is much bigger then whole GridView width.
Results aren't aligned with related columns in GridView.

How can I solve this two problems?

Regards,
MC

GridView

answered on 01 Nov 2011

3 answers

262 views

Can not leave cell with validationerror

Hello!

We want to implement validation in the Wpf RadGridView in such a way that the user can leave a cell that contains an error,
the cell should still display the invalid input, and still display the red error-border.
This is the normal behaviour for ordinary Wpf-controls, but a Grid cell seems to force the user to correct the input before she can continue.

regards
Stefan Wimo

GridView

answered on 31 Oct 2011

1 answer

110 views

FIFO Chart

Hi,

I'm binding a chart to an observable collection that is updated every second. This all works great, but I only want to show 10 minutes of data. That's why I want to have a FIFO (First In, First Out) chart where the oldest data begins drops off (1 second at a time) when the 10 minute mark is hit. I can remove the items from the collection without a problem, but the datapoints remain on the chart. Any way to remove specific datapoints?

Chart

answered on 31 Oct 2011

7 answers

588 views

Export to Word, Excel and Csv with RadGridView for WPF

You provide a nice, complete sample of using the new export extentions for silverlight in:

http://blogs.telerik.com/vladimirenchev/posts/09-01-22/Export_to_Word_Excel_and_Csv_with_RadGridView_for_Silverlight.aspx

Do you have a sample of the same for WPF?

I manage to generate the html from the gridview, but embedding this in an actual .xls or .doc file is beyond me.

Thank you for any help!

-Tomas

GridView

answered on 31 Oct 2011

0 answers

44 views

ObservableCollection and databinding - Can't make it work

Please ignore my question.
It was nothing to do with Telerik controls...

GridView

asked on 31 Oct 2011

5 answers

151 views

Exception when removing last item of RadGridView with RowDetailTemplate

Hi,

I have a grid view that specifies a RowDetailTemplate, something simple, like an empty grid. Whenever I populate the ObservableCollection which is bound to the ItemsSource property of the grid, everything works fine, and the grid contains the data. I can remove one element at a time, no problems. Whenever I try to .Clear() the collection or .Remove() the last element, BOOM!, Object Ref Not Set...If I take off the RowDetailsTemplate, I can remove all items without exceptions. Has anyone found a work around for this bug in the GridView? I really need to remove all items and still have the Row Details. Thanks for any suggestions!

GridView

answered on 31 Oct 2011

3 answers

97 views

ScrollntoView not Working

Hi !

I've got a simple project with a ScheduleView in the MainWindow. The constructor code is as follows:

public MainWindow()
        {
            InitializeComponent();

            m_scheduleView.AppointmentsSource = new List<Appointment>();

            // Init the schedule view
            m_scheduleView.ViewDefinitions.Add(
                new WeekViewDefinition()
                {
                    FirstDayOfWeek = DayOfWeek.Sunday,
                    VisibleDays = 7,
                    TimerulerMajorTickStringFormat = "{0:H:mm}"
                } );
            m_scheduleView.ViewDefinitions.Add(
                new MonthViewDefinition()
                {
                    FirstDayOfWeek = DayOfWeek.Sunday
                } );

            // Make the beginning of the schedule read-only.
            var excludedRange = new ObservableCollection<Slot>();
            excludedRange.Add( new Slot( DateTime.MinValue, new DateTime( 2011, 10, 22 ) ) { IsReadOnly = true } );
            m_scheduleView.SpecialSlotsSource = excludedRange;

            m_scheduleView.ScrollIntoView( new Slot( new DateTime( 2011, 10, 23 ), new DateTime( 2011, 10, 24 ) ) );
        }

What I'm trying to do here is make the schedule read-only up to a certain date, then scroll the following day into view.
However, the last line, where I attempt to scroll a date into view, doesn't work.

Am I missing something or was this broken in SP1 ?

Thanks,
Sebastien

ScheduleView

answered on 31 Oct 2011

5 answers

285 views

PaneGroup.IsContentPreserved = true blocks content resize events

I have an application that has a vertical splitpanel that has two horizontal splitpanels. In the horizontal splitpanels I have RadDocking controls hat hold a viewer control that can show camera images. When docking or undockung a pane it gets reloaded, and the camera images blanks for a moment because the connection needs to be setup again. It would be nice if there is a solution for this, so if anyone has ideas please respond.

To solve this I tried setting PaneGroup.IsContentPreserved to true. This caused a nasty side effect: some of my content controls of the RadDocking did not receive resize events anymore, and they got loaded with an ActualSize of 0. So my application came up with some empty RadDocking controls while others were working correctly. After quite some time I discovered that Solution for this is to leave IsContentPreserved to false.

Docking