Hello, I am using RadDiagram to draw a lot of custom shapes, someone need to display dashed lines, I draw the dotted line in Expression Design 4 and export it , but it is not displayed in RadDiagram as dashed lines, Anyone can help me, thank you

I need to be able to temporarily disable the panning and zooming of my RadCartesianChart but I cannot see how to do it.

I've got a plot of a profile that I want the user to be able to zoom horizontally and pan.  I accomplish this via a ChartPanAndZoomBehavior:

            <tk:RadCartesianChart.Behaviors>
                <tk:ChartPanAndZoomBehavior ZoomMode="Horizontal"
                                            PanMode="Horizontal"
                                            DragMode="Pan"
                                            />


This has been working fine for a while now.  I can pinch zoom as I want

But I also have some annotations on the chart that I needed to move with code-behind with Mouse and Touch Handlers, so I wrote handlers for MouseEvents (LeftButtonDown, MouseMove, LeftButtonUp) in which I handle moving my annotations.  It works fine.  In each handler, I mark the event as "Handled" to prevent it from bubbling up to the Chart.  

This also has been working fine for a while.  The user can drag the annotations and slide them across the profile and so the chart does not pan while I'm dragging my annotations, which is what I want.  For example,here's the MouseMove handler.

        private void RegionHandle_OnMouseMove(object sender, MouseEventArgs args)
        {
            if (!(sender          is CartesianCustomAnnotation   ann))
                return;

           if (!ann.IsMouseCaptured)
                return;

            // (Call my annotation manipulation code here...)

            args.Handled = true;  // Prevent chart from handling this.

      }


Unfortunately, I cannot achieve the same thing with touch handlers.  I wrote event handlers for ManipulationStarting, ManipulationStarted, ManipulationDelta and ManipulationCompleted.  In each one I mark the event as "Handled" but it doesn't matter.  The chart still pans while I am dragging my annotations.  It is very confusing.

        private void RegionHandle_OnManipulationDelta(object sender, ManipulationDeltaEventArgs e)
        {

            if (!(sender          is CartesianCustomAnnotation   ann))
                return;

            // (Call my annotation manipulation code here...)

            args.Handled = true;  // Prevent chart from handling this.

        }

It appears there is no such thing as PreviewXXXX events for Manipulation events so I cannot use that route to intercept the touch handlers.

My next attempt at a fix came when I saw that the ChartPanAndZoomBehavior is a Dependency object and its ZoomMode, PanMode, and DragMode properties are DependencyProperties.  So it should be valid to bind them to properties on my control and then just dynamically change them to ChartPanZoomMode.None and ChartDragMode.None in the handlers themselves, right?  Nope.  Does not work.  I get a runtime exception claiming that "ChartPanZoomMode.None is not a valid value for PanMode" (which makes no sense to me).

So how can I selectively prevent the chart from panning when I want?

So how can I prevent the chart from handling touch events when I want and enable it otherwise?
-Joe

(p.s.:  I cannot use your Format Code Block" functionality.  The editor window always appears at top of the web page and it is obscured by the banner on the page with the "Telerik" menu, "Get a Free Trial" button, etc.   I've tried this in two browsers, Edge and Chrome.  I'll attach an image to this post to show what I mean..)

Hi, 

I am facing an issue, where in on my all grids the position is same , but just on 1 grid the position of filter menu icon is different. Wanted to know how to rectify that.

attaching the screenshot.

I have a grid that has some columns that are bound to properties that come from an inherited class. 

All properties display fine - whether they are from the base class or the inherited class.

The properties that come from the inherited class can not be sorted.

This sure seems like a bug, and I'd really rather not have to go the whole custom sorting implementation.

Hi, 

we are facing more issues with the RibbonView

1. When it is used Large icon, the text is cut (look at Select All, it shows only Select, after resize it shows all text)

2. Group icons are shown strangely and are not resized to proper size (i set them as all icons for RibbonView from our font (vector)) look at after picture

3. Resize works strange, when the Large icon is made small or medium, the button is not aligned with those for orderedwrap panel ... (very bad) look at picture

4. From not known reason, the problem might lie outside RibbonBar responsibility, we cannot resize Window at left and right side of RibbonBar (the cursor is away) , on the title area the cursor is working ...

Hi, 

Facing a strange issue, where in my check box filter shows just loading. This is only happening for 3 column filters on the grid, rest other grids don't have the issue. Attaching the pic for the same, please let me know how and what i can do to resolve this.

Regards,

Ankit Jain

Hi Telerik Team,

I suspect this is not using the ComboBox as intended and the AutoComplete behaves in a similar manner as it appears both controls expect all the data to be loaded and the filtering is down within the control on the superset of data.

However, I have a massive dataset and I want to use this as a traditional AutoComplete/Suggest control, so I am loading in all the (pre-filtered) data as the user types, the issue is as soon as I update the ItemsSource and there is 1 item that is a substring match (am using Contains) the control selects that item and clears the input text from the user.

Is there a way I can accept all user input without it being cleared until the user picks an item from the dropdown? Moreover, is it possible to not change the SelectedItem binding until a dropdown item is chosen "by the user" (not by the control)?

Thanks,
Maurice

Hi,

I want to highlight the row on dragover where I am dropping an item from the grid. I have two different gridviews. I drag a row from one grid and drop on to other grid row,

I have written following code for Highlighting a gridviewrow on a Item dragover,

public T4ShipmentSchedulerView(IT4ShipmentSchedulerViewModel viewModel)
{
InitializeComponent();
StyleManager.SetTheme(ShipmentGrid, new OWBTheme());
DataContext = viewModel;
viewModel.GridOperations = new TelerikGridOperations(ShipmentGrid, Constants.T4ShipmentBuilderGridSettings);
//ShipmentGrid.RowLoaded += ShipmentGrid_RowLoaded;
}
private void ShipmentGrid_RowLoaded(object sender, RowLoadedEventArgs e)
{
GridViewRow row = e.Row as GridViewRow;
if (row == null) return;
DragDropManager.RemoveDragEnterHandler(row, OnRowDragOver);
DragDropManager.AddDragEnterHandler(row, OnRowDragOver);
DragDropManager.RemoveDragLeaveHandler(row, OnRowDragLeave);
DragDropManager.AddDragLeaveHandler(row, OnRowDragLeave);
DragDropManager.RemovePreviewDropHandler(row, OnPreviewDropLeave);
DragDropManager.AddPreviewDropHandler(row, OnPreviewDropLeave);
}
private void OnPreviewDropLeave(object sender, DragEventArgs e)
{
OnRowDragLeave(sender, e);

}

private void OnRowDragLeave(object sender, DragEventArgs e)
{
GridViewRow row = sender as GridViewRow;
if (row != null)
{
row.Background = _backGround;
row.Foreground = _foreGround;

}

}
Brush _backGround;
Brush _foreGround ;
private void OnRowDragOver(object sender, DragEventArgs e)
{
GridViewRow row = sender as GridViewRow;
if (row != null)
{
_backGround = row.Background;
_foreGround = row.Foreground;
row.Background = new SolidColorBrush(Colors.Gold);
row.Foreground = new SolidColorBrush(Colors.Black);
}

        }

It highlights the row on drag over but it messes with other trigger styles and they stop working. Do we have more proper soln on this.

Regards,

Vidyadhar