I am evaluating the DevCraft suite for WPF, and I've run into an odd problem.  

I'm developing an internal application for my company.  It uses .NET 4.5, WPF, Prism, and Entity Framework 5.0.

When I instantiate a RadTreeView control and populate it with static RadTreeViewItem objects in the XAML, it doesn't display.  If I set the background color, I get a colored rectangle with no items.  Using Snoop I can see that it exists in the visual tree and the HasItems property is true.  This behavior is the same regardless of whether I navigate to a region using Prism or declare it manually in the shell window.

If I create a separate application and place the static test RadTreeView in it, it behaves as expected.

Any ideas?

Thanks!

Hello. First, I apologize for the fact that I can seem somewhat intrusive. I want to use RadTileView for real-time charts displaying. For example, if I need the folowing RadCartesianChart (please see 'SensorsSignals.PNG' file attached and XAML markup below)

According to your 'DataBinding_WPF' program example and 'Data Binding' paper in http://docs.telerik.com/devtools/wpf/controls/radtileview/populating-with-data/populating-binding-to-collection I do the folowing steps.

1) In the View I write such markup:

In the ViewModel I write something similar to the following code in C# (note!!! this code here for STUBS but not for real ultrasonic signals!!!):

All works OK here. BUT. If I need to locate inside the block of

a XAML markup which contains <UserControl.Resources>...</UserControl.Resources> blocks and <i:Interaction.Triggers>...</i:Interaction.Triggers> blocks then how WPF will behave itself in this case? Will she allow such markup or not? As far as I know, it's impossible to place one <.Resource> tag inside another <.Resource> tag. So, what I can do in this case? Below is XAML markup which I need to locate inside <FrameworkElement.Resource></FrameworkElement.Resource> tag. For clarity, I show it inside <UserControl></UserControl> tag as I've done it in the application.

If you'd like you can see gas velocity bar chart in 'GasVelocityBarChart.PNG' file attached. And you can see gas velocity spline chart in 'GasVelocitySplineChart.PNG' file attached.

So, I'm very interested in the following thing: How to put the content (that is inside the <UserControl></UserControl> tag in the figure above) into <FrameworkElement.Resources></FrameworkElement.Resources> tag? After all, this inserted content itself has in its composition the <UserControl.Resources>...</UserControl.Resources> and <i:Interaction.Triggers>...</i:Interaction.Triggers> tags. Please help me understand this. I will be very grateful to you for your help because I really appreciate your help.

I am using the Office 2013 Theme on my project and the arrow on the RadComboBox is very small.  Also, for some reason, you have to click directly on the arrow itself in order for the dropdown to open.  If you click anywhere in the ToggleButton area around the arrow it will not open.  So anywho, I decided to try changing the toggle button on the control to make it larger.  I basically got some code for a normal ComboBox from https://stackoverflow.com/questions/27128526/how-to-change-combobox-arrow-image-in-wpf and modified it to work with the telerik:RadComboBox.  The control shows as intended in the XAML design window but, when I run the application the styling does not take effect.  Any idea what I may be missing here? 

 

Hi,
Was wondering on how I can access the sort order of items in the list so I can save their order?

I'm trying to bind my own ICommand to a RadRibbonButton's Command. My code is based on the example at http://demos.telerik.com/silverlight/#RichTextBox/Binding. The relevant bit of the XAML hierarchy is:

<telerik:RadRichTextBoxRibbonUI DataContext="{Binding Path=Commands, ElementName=richTextBox}">
     <telerik:RadRichTextBoxRibbonUI.QuickAccessToolBar>
                        <telerik:QuickAccessToolBar>
                            <telerik:RadRibbonButton telerik:RadRichTextBoxRibbonUI.RichTextCommand="{Binding Path=SaveCommand}"     <== This is the button I want to bind my MVVM ICommand to.

Obviously, I removed the RichTextCommand attached property, and tried to bind the Command property to the ICommand on my viewmodel, which is set as the DataContext for the Window. As you can see, the example XAML (above) modifies DataContext at the RadRichTextBoxRibbonUI level, so to get back to "my" DataContext, I set a "Name" to an element higher up the visual tree, and used "ElementName" in my Binding, with the intent of using "Path=DataContext.MySaveCommand"; but I got a binding error saying that it couldn't even find the named element. I also tried {x:Reference} but got circular reference issues with that.

Please can someone demonstrate how to bind that command using MVVM?

My project references the "2016.3.1024.45" version of the assemblies. I tried attaching it; but it wouldn't let me.

 

Hi,

Is there a way to show tool tip when I hovering on the "hour" or "day" in my time line? see attached file.

When I hovering 11 AM I want to show tool tip  : 11:00 AM Aug 6 2012

(according the boundaries of the start/end TimeLine parameters)
When I hovering 13 PM I want to show tool tip  : 13:00 PM Aug 6 2012

 

Hi,

 

I have a custom library which has provision to handle '+', '-' and many other operators along with custom functions. My requirement is that, I want spreadsheet to call my library to evaluate the cell formula. The operands of the operators ('+' etc. ) are custom and cannot be calculated by default engine.

We're trying to upgrade our applcations to version 2017 R2 (from 2016 R2) and we are unable to get the dialog boxes from the radRichTextBox control to appear (font and paragraph). When we try to open those dialogs explicitly in code we get exceptions thrown. While tracking down the problems we found that you've introduced many compile time checks for WPF in your code (#if WPF) which are causing the problems.

The assumption in your code that checking for WPF at compile time is enough is incorrect in cases (like ours) that  have applications that mix both WinForms and WPF in the same application. The ability to mix is a core feature provided by Microsoft to provide the ability to support and enhance legacy WinForms applications with WPF functionality.

The error we're experiencing is in the method DialogHelper.CheckApplicationTheme. When the code attempts to access the Application object it is failing because we don't have a WPF Application object - we have a WInForms object. That results in the Application.Current value being null which causes an exception.

We've been using your WPF controls for years and haven't had this problem with previous versions and this is a major problem for us. Microsoft has supported mixing WPF, WInForms and even C++ in one application for years and we have used that ability extensively in our applications. Until now your controls have supported that functionality too.

Do you have a recommended method for supporting mixed application types like we have?
Would rebuilding your WPF source code with the WPF compile flag turned off help us or will there be side effects to that?

Freeze Pane is not working as expected when we try to change freeze position programmatically.

When i try to change freeze position on a Button click the change in the UI for freeze is not happening.

 

Is anything i am doing wrong.?

Thanks

Hi

I have a RadCartesianChart (see XAML below) in a DataGridTemplateColumn but cannot find a way to reduce the amount of vertical space it is taking up.  It seems to have a minimum height?  Please advise.

<DataGridTemplateColumn Header="MyColumn"
IsReadOnly="True"
Width="300">
<DataGridTemplateColumn.CellTemplate>
<DataTemplate>
<telerik:RadCartesianChart Name="MyChart"
VerticalAlignment="Stretch"
Margin="10"
MaxHeight="20">
<telerik:RadCartesianChart.Behaviors>
<telerik:ChartTooltipBehavior />
</telerik:RadCartesianChart.Behaviors>
<telerik:LineSeries ItemsSource="{Binding HistoricValues}"
ValueBinding="RawValue"
CategoryBinding="Year">
<telerik:LineSeries.PointTemplate>
<DataTemplate>
<Ellipse Fill="Blue"
Width="8"
Height="8"/>
</DataTemplate>
</telerik:LineSeries.PointTemplate>
</telerik:LineSeries>
<telerik:RadCartesianChart.HorizontalAxis>
<telerik:CategoricalAxis />
</telerik:RadCartesianChart.HorizontalAxis>
<telerik:RadCartesianChart.VerticalAxis>
<telerik:LinearAxis Minimum="{Binding HistoricValueMinimum}"
Maximum="{Binding HistoricValueMaximum}"
MajorStep="{Binding HistoricValueStep}"
Visibility="Collapsed"/>
</telerik:RadCartesianChart.VerticalAxis>
</telerik:RadCartesianChart>
</DataTemplate>
</DataGridTemplateColumn.CellTemplate>
</DataGridTemplateColumn>

Thanks