Hi All,
    I have an issue where I am binding my ViewModel to the TreeView and using a hierarchical data template to allow a self referencing list of items.

I have got this all working fine - however, when I add a new item to the source list, it causes the itemssource on the treeview to be re-evaluated. This in turn calls the converter (which is using a linq query to find the top level of the tree and children).

I think that by calling this converter, the TreeView is losing track of which items were expanded because when the control refreshes, the TreeView is collapsed

This is my converter code (pretty simple):

public object Convert(object value, Type targetType, object parameter, CultureInfo culture)

       {

           var item = value as Structure;

           var items = value as SturctureCollection;

 

           if (items != null)

           {

               return items.Where(i => i.ParentID == 0);

           }

           else if (item != null)

           {

               var parent = (item.Parent as StructureCollection);

 

               return parent.Where(i => i.ParentID == item.ID);

           }

 

           return null;

       }

Any idea if this is easily recitified with an option on the control? If not I assume I will need to track which items are expanded (I was thinking about just putting the IDs in a list and iterating), if so which event is best to use when the underlying itemssource is re-evaluated?

Thanks,
Charles

We have started using the Telerik RadControls in our latest WPF application, but our test team are having a few issues when using QTP 11.0 to create automated UI tests for some of the controls.

Specifically, when a RadComboBox is made editable, they can't get QTP to enter text with the 'type' command (which works with a regular WPF ComboBox) as it complains it can't focus on the control. Also with the RadGridView control it doesn't seem to pick the grid up at all, just individual cells.

Has anyone else had any luck using QTP with the WPF RadControls? Any tips or QTP plugins that anyone is aware of?

Thanks for any help,

John

I want to add user control in grid view header template. please guid

Hello,

I'm using Telerik RadControls for WPF 2012.2.725.40. I have a RadListBox with a DataTemplate for the items. In the DataTemplate I have a TextBox and I want to achieve that when the user clicks inside the TextBox, the ListBoxItem gets selected. So, I made a Style:


This works fine with standard WPF ListBox but not with RadListBox/RadListBoxItems.

The full source:

and the code-behind:


Am I doing something wrong?

I've got data loaded in the RadGridView control that I want to export to Excel. This is working just fine, using the .ToCSV method. However what I'm searching for is way to tell Excel to treat a column as a Text instead of General.

One of the columns is a bar code number. This number can start with a zero, like 0123456789.

After the export Excel cuts off the first zero because it is formatting it as a General and I get 123456789. I know I can reformat in Excel to custom format. But this should not be necessary.

Any recommendations?

I've tried setting DataFormatString to "{}{0:000000000000}", but this does not work. I did see a previous post that describes a bug in DataFormatString and I'm using 2010_1_0309 version of RadControls, which I think is a older version.

Thanks ...

Hi,

I'm trying to make a line chart with multiple series with the Y-Axis being an integer value and the X-Axis being a date value. However, I need to display something custom for the X-Axis item labels - not the date. So far I have been able to do everything except to get the X-Axis item labels to show the custom label values. Any help would be appreciated.

Thanks.

Hello!!

So, I blew up your ChartView by having fun with animating heights.  In my live application, I have two ChartViews on different rows of a Grid and the row heights are animated to show/collapse a chart.  If the window size is small enough, I will get a  "'-1' is not a valid value for property 'Height'." exception with this stack trace:

I have been able to reproduce this issue in its own project by forcefully setting the chart Height property to a small value and then adding a series (line/bar doesn't matter).  This is done in a Command executed by pressing a button.  Here is the relevant reproduction code:

View:

View Model:


I require this situation to work.  Although it may seem silly to set height before adding a series, this should not cause a crash.  If a workaround can't be found, I will require a hotfix.  This occurs with the latest version Q2 2012 SP1 (also Q1 2012).

The series is added after user invokes a command, so I know what data to display.  There can be multiple series in a chart also, hence the programmatic approach.

I am at a loss to figure out how to solve this problem as I can find nothing wrong with my code and it works fine when the screen size is sufficiently large enough.

Thank you very much!

I'm trying to create a simple horizontal bar chart that contains 3 data items and corresponding values. I've been working through the Help files on the website to get started with a RadCartesianChart.
I have the dlls,  Telerik.Windows.Controls, Telerik.Windows.Controls.Chart, and Telerik.Windows.Data included as referenced libraries within the WPF project. Any ideas what I am doing wrong?

I have the following references setup in XAML:
I have the chart declared as shown below. The LinearAxis and CategoricalAxis are displaying messages that state; The type 'chart:LinearAxis' was not found. Verify that you are not missing an assembly reference and that all referenced assemblies have been built.

Hi there,

I've got the WPF telerik controls which is great, but I'm new to WPF so many of the controls and usages are still a bit of a mystery.
If I wanted a static main form and when different buttons (almost like a menu, but each button represents a section of the application) are clicked then I want to load another form into the main form, kind of like old MDI forms.

What's the right tool for the job here. I almost thought the Tileview might do the job, but then it seems more like the tile view is more there to dislpay small chunks of data to the user and have them be able to move it around.

Thanks,
Jacques

Hi,

I've been using the RowReordering tutorials to implement my drag & drop functionality and I'm trying to prevent certain grids from dropping their draggedItems into a grid. I'm thinking all I need is the target and source grid references, performing a simple comparison or test and show the "disabled" drag effect. I can get the target grid object but not the source grid object from inside the OnDragOver or OnDrop event handlers.

How can I do this? 

Thanks