We've seen a crash in our application when the RadMap control is disposed. We've only seen the crash once but have been unable to reproduce. The stack trace is as follows:

We're currently using version 2017.2.614.45. Looking at the Telerik code it seems like the mouse event handler for MapMouseLocationIndicator doesn't get detached when RadMap is disposed. Is it possible there's some race condition that allows a mouse event to be processed in MapMouseLocationIndicator after its RadMap property has been set to null (which does happen when RadMap is disposed)?

Thanks
Pete

Hi Team

I am in the process of migrating our WPF App from using .NET Framework 4.7.2 to .NET Core 3.1.

Migrating From :
 - Telerik UI for WPF .NET Framework NoXaml Binaries (Version R3 2019 SP1)
 - .NET Framework 4.7.2

Migrating To :
 - Telerik UI for WPF .NET Core NoXaml Binaries (Version R3 2019 SP1)
 - .NET Core 3.1

All has gone well so far with very little code change, however we have noticed a breaking change between the Telerik .NET Framework assemblies and the Telerik .NET Core assemblies.

We have a custom Dictionary of built-in ChartPalettes with custom display text that is bound to a dropdown box as per the below. Users are able to select a ChartPalette from the dropdown when displaying charts.

        /// <summary>
        /// Dictionary of <see cref="ChartPalette"/>s with custom display text
        /// </summary>
        public Dictionary<string, ChartPalette> Palettes { get; private set; }

            Palettes = new Dictionary<string, ChartPalette>
            {
                {"Spring", ChartPalettes.Spring},
                {"Summer", ChartPalettes.Summer},
                {"Autumn", ChartPalettes.Autumn},
                {"Arctic", ChartPalettes.Arctic},
                {"Warm", ChartPalettes.Warm},
                {"Cold", ChartPalettes.Cold},
                {"Crystal", ChartPalettes.Crystal},
                {"Flower", ChartPalettes.Flower},
                {"Fluent", ChartPalettes.Fluent},
                {"Forest", ChartPalettes.Forest},
                {"Grayscale", ChartPalettes.Grayscale},
                {"Green", ChartPalettes.Green},
                {"Ground", ChartPalettes.Ground},
                {"Lilac", ChartPalettes.Lilac},
                {"Material", ChartPalettes.Material},
                {"Office 2013", ChartPalettes.Office2013},
                {"Office 2016", ChartPalettes.Office2016},
                {"Pastel", ChartPalettes.Pastel},
                {"Rainbow", ChartPalettes.Rainbow},
                {"Visual Studio 2013", ChartPalettes.VisualStudio2013},
                {"Visual Studio 2019", ChartPalettes.VisualStudio2019},  // Does not work in Telerik .NET Core assemblies
                {"Windows 8", ChartPalettes.Windows8},
            };

The issue is that the VisualStudio2019 ChartPalette (from Telerik.Windows.Controls.ChartView) throws the below exception when using the Telerik .NET Core assemblies. This does not occur when using the Telerik .NET Framework assemblies.

System.IO.IOException: 'Cannot locate resource 'visualization/palettes/resources/visualstudio2019.xml'.'

StackTrace:
   at MS.Internal.AppModel.ResourcePart.GetStreamCore(FileMode mode, FileAccess access)
   at System.IO.Packaging.PackagePart.GetStream(FileMode mode, FileAccess access)
   at MS.Internal.IO.Packaging.PackagePartExtensions.GetSeekableStream(PackagePart packPart, FileMode mode, FileAccess access)
   at MS.Internal.IO.Packaging.PackagePartExtensions.GetSeekableStream(PackagePart packPart)
   at System.Windows.Application.GetResourceStream(Uri uriResource)
   at Telerik.Windows.Controls.ChartView.ChartPalettes.LoadPalette(String fileName)
   at Telerik.Windows.Controls.ChartView.ChartPalettes.get_VisualStudio2019()

I can confirm we have ALL Telerik .NET Core assemblies being referenced in our project including the Theme assemblies and styles. If we remove the VisualStudio2019 ChartPalette, it works perfectly without any issues.

Please can this be investigated.

We are having an issue with the CellStyleSelector randomly changing the style when scrolling left and right in the GridView.

We have it narrowed down to our comparison in the StyleSelector code. We need to compare the cell value to the Min and Max columns to see if it is within the range. If it is, set the style to Valid, if not set it to Invalid.

This works on loading of the grid, but the scrolling causes it to glitch.

Code where the value of comparison (cell) changes and causes glitch:

 

Code example using a fixed value of comparison (cell) and does not glitch:

 

We have poured over these forums and every example for StyleSelector uses a fixed value for comparison. 

We have applied this concept to the NegativeStyleSelector.zip in this forum and it also glitches: https://www.telerik.com/forums/apply-cellstyleselector-in-code-behind

Any help would be appreciated!

Thanks!

I am getting a strange error on a customer PC with RadGlyph's.  They have a vanilla Win7 box with .Net 4.5.1, any idea what might cause this?  It works fine on my Win7 machine so I'm not sure where to look.

 

When user clicks on X, I want to check whether there are any unsaved changes in the page. 

I have isNotSaved Property which tells me that. 

Now, if there are any unsaved changes, I want to show Alert window(which is in place) to confirm by user to close pane or not.

If user says Yes, I want to close, If not I dont want to close.

How can I implement this in Pure MVVM ?

How to get the contents of a row (Model) simply by mousing over the row? I'm trying to cache the row, that is, it's underlying model when a user mouses over the row. 

Hi dear Telerik Team, 

 

I'm just facing an issue which took me Hours to (possibly :) ) understand.

 

I'm using a RadialMenu via RadialContextMenu in a RadGridView. While my RadialMenu did not Hide as it was intended, I guess I can reproduce this in a simple Environment as well: 

Usually RadialMenu behaves as inteded. 

However if Opening the RadialMenu with MouseRightClick on a ColumnHeader (instead on one of the rows), every intend of hiding that RadialMenu via "RadialMenuCommands.Hide.Execute(null, null);" Fails. 

After somehow Closing it (via rightclick on a row), it reopens, however hiding again Fails. 

I have just retested in another sample: RadialMenu is especially not Hiding if you just select a cell and without causing any other Events also Right-click same GridCell to open the Radial Button. Now after leaving the RadialMenu it should hide because there is an Event on MouseLeave which is invoking RadialMenuCommands.Hide.Execute(null, null). However that does not take effect.

Am I overseing something? Can you help?

 

Can't attach my Code. How can I? 

Hi All,

I am trying to assign an icon from my resources as follows but no icon is displayed. Can anyone help me please?

P.S. This code works elsewhere where I add the image to a canvas

 

        Dim icon As New Image()
        icon.Height = 80
        icon.Width = 80
        icon.Source = New BitmapImage(New Uri("Resources/monitorNoComms.png", UriKind.Relative))
        alert.Foreground = New SolidColorBrush(Colors.White)
        alert.BorderBrush = New SolidColorBrush(Colors.White)
        alert.Header = header
        alert.Content = message
        alert.IconColumnWidth = 80
        alert.Icon = icon
        alert.CanAutoClose = autoClose
        alert.BorderThickness = New Thickness(1)
        manager.ShowAlert(alert)

 

In our application we have several comboboxes and behavior of specific one is not fine for our automation tests (Teststack.White).

Description: combobox contains two values. When application starts then visibl​​e selected value is "value1" but in code, when I call

then selectedItem is null. When I call

neither will take effect ("value1" is in combobox.Items[0] ). I need to call

and only now is everything ok. This will not work ​when I have single item in combobox and this solution is not what we want to have in our app. But the strangest part is that only this one combobox is behaving as is not expected.

Do you have any idea where could be a problem? If you need more specific information, don't hesitate to ask.

Thanks and regards, Martin

When I set my x axes datetime continuous axis to more than 4 hours or so the chart will freeze my UI.