I have a radcombobox that has a list of checkboxes that has multiselect. 

Two questions. 

1. I find that I need to get the most current item selected. With that said, how do I get the most current row(either by Id or by Index)

2. Second, my radcombobox has two types of "events" i need to worry about. One is when the row is clicked and highlighted and another one when user clicks the checkbox itself. If I click the row , I manually search for the item on the Viewmodel and mark the item checked to check the checkbox of that row. My issue is, if the user clicks the checkbox, I can trigger the command of the viewmodel and I will pass the s

Hi,

I'm trying to change the borderbrush of the Dockresizer.

What I found out, is that the dockresizer is part of the RadSplitContainer.

I cannot create a template copy of that control because Blend throws an error (btw. I can create copies of other telerik controls like documentmanager).

Any ideas?

Hello,
I would like to ask about context menu of PDF viewer.

So, I have PDF viewer (which is located in some UserControl), it works fine. In my app I allow to user creating of custom bookmarks - just some name and page number. One of the ways, how can user create own bookmark - right click and choose create bookmark in context menu. To create this I would like to use custom RelayCommand, which is in ViewModel of MainWindow and also uses some properties from ViewModel of MainWindow.

So, there is some problem. Since PdfViewer has it own DataContext (Command Descriptors), I can't use PlacementTarget to get some information from Window/UserControl DataContext (I tried relative source - it doesn't work). I found a solution - I created addition class with own RelayCommand, that works with STATIC variables (instance of PDF viewer to get current page) and methods (to create bookmark) from ViewModel. But I really dont like it really this solution.

So, I would like to ask you, how can I use my custom command from ViewModel in context menu of Pdf viewer? Or at least how can I pass CurrentPageNumer as argument, when I click on my custom menu item (command from custom class, which is initialized as static resource) in contextmenu of PDFviewer?

Now it looks like that:
<telerik:RadMenuItem Header="Create Custom Bookmark" Command="{Binding SomeCommand, Source={StaticResource customClass}}"    
                                                 Visibility="Visible" >

Thank you in advance!
Best regards,
Alexander

Hi guys,

I want to make ExpressionEditor supports custom operators, and use those operators to replace existing one. For example, I want to use "!=" instead of "<>" for "not equal", and use "&&", "||" accordingly. I read the documentation and know how to customize the nodes in the tree, but how about features related to parsing? How to let the parser know the custom operators we defined?

PS: I'm using the latest WPF controls.

Hi,

I enabled filtering on a radcombobox (see below for the xaml). 

When the combobox gets focus the dropdown opens. Next, when I type some characters in the combobox, the filter works correctly and narrows down the resultset to lets say 2 items. Next  I want to be able to click once on the second item in the filtered dropdownlist and pass it on (i.e. it will be used to highlight it in a radtreeview). What happens now is that the first click will just set selecteditem to the clicked item and show it in the combobox. I need to enter (so a second user input) to pass it on.

Is it possible to directly select and pass on an item from a filtered set of items with just one click? One option I considered is using a previewMouseDown event, which is hit after just one click, but than the top item in the filtered list is passed on as selecteditem, even though I clicked on the second item. 

<telerik:RadComboBox  IsEditable="True"  IsFilteringEnabled="True" IsTextSearchEnabled="True" TextSearchMode="Contains" StaysOpenOnEdit="True" OpenDropDownOnFocus="True" ItemsSource="{Binding Locations}" DisplayMemberPath="Description"    KeyDown="CboSearchLoc_KeyDown>

Thanks,

Maarten

Hi,

Is there a way to implement the bar series as in the image attached? The gradient is not necessary.

Currently I'm styling the same bar series as cluster and the goal is to format the top one so that instead of the bar it display the category

But I'm failing. 

Thanks and regards

I've created a UserControl, PortStatusButton, that contains nothing but a RadButton for which I've modified its standard style to incorporate my own VisualStateGroup with its VisualStates.  Its purpose is to be a multistate button with logic based on the values of several of its properties.  I have written a custom VisualStateManager to process that logic.  I have placed the PortStatusButton into the ItemTemplate of a RadListBox and bound its properties to data in my Model.

The basic method I've used to incorporate my visual states into the button is to create a separate VisualStateGroup and then have my VisualStateManager watch for a call to GoToStateCore for a CommonStates.Normal VisualState.  I then check to see what state my button should be in and then call GoToState to go to my desired state.  This allows me to have the PortStatusButton show my states, but still let the RadButton control the overall functioning of the button.

It's all working quite well, with one exception.  When the PortStatusButton first appears, it fails to display my correct VisualState, but displays the CommonStates.Normal state instead.  I think I know why and I'd like to ask you to verify that I'm correct and suggest what I might do about it.

The mode of failure is that the first time a property gets set in PortStatusButton, the UpdateButtonAppearance method that is called by its OnPropertyChanged handler fails to obtain a reference to the the current state of my VisualStateGroup because it can't find the child Grid of the RadButton that contains the VisualStateManager.  Thus, it never calls GoToState because it doesn't know where to go, and the RadButton first displays in its CommonStates.Normal state.

The data that is feeding the bound PortStatusButton properties is coming from my ViewModel, which is defined as the DataContext in the main Grid that contains the RadListBox, and which loads the source collection in its constructor.  My suspicion is that as each PortStatusButton is instantiated by the RadListBox, the Grid in the RadButton's control template has not yet been instantiated, so it's not yet there to be found.  By the time the user starts clicking on the buttons, the Grid has been instantiated and the PortStatusButtons will function as they should.

Is that correct?

What would you suggest I do to allow the buttons to display my correct state when they first appear?

I have included excerpts from my code below:

First, excerpt from my PortStatusButton xaml:

And an excerpt from my PortStatusButton code behind:

And the custom VisualStateManager:

And an excerpt from the control containing the RadListBox:

Hi,

I've enabled the search panel of a grid, the grid is the only control on a form and I want the initial focus to be in the textbox of the search panel when the user opens the form, how do I go about achieving this?

Thanks.