Hi,

I have an Telerik WPF app built recently for .Net Framework 4.7.2. The app is lightning fast and I couldn't be happier with performance.

However, I just successfully converted it to .NET Core 3.0, and while the app functions properly with no compile or runtime errors, its performance is dreadful. For example, launching the .exe takes 1.5 seconds for the .Net Framework version, but 21 seconds for the .Net Core version. A simple database query takes .01 seconds (i.e. to both retrieve the data and refresh the interface) in Framework, but 6 seconds in .Net Core.

I'll investigate and identify the components causing the problem, but do you have any opening thoughts that might point me in the right direction?

Wayne

Hello together,

I use a RadPanelBar to display a List of Dates in a range grouped by week (to better understand I added a picture). If I click a day I want to load right beside it a Datatable into a RadGridView based on the date I selected.

I managed to bind the RadPanelBar to my ViewModel:

But have problems with the SelectedItem. The days and weeks are different classes, because they contain different properties for example the week contains a List of days.
If I bind the SelectedItem to the 'selTag' and set a selTag in code nothing happens.

If I change the Selection in UI the property is updated, so this part works.
But if I select a week in UI my whole RadPanelBar gets a red border I don't understand where it comes from. Maybe because a week is a different class then a day and cant be updated because of that?

Is there a way to bind the SelectedItem poperty of a hierarchical RadPanelBar for the parent and chield levels seperately? Or some compleetely different solution?

I have uploaded my project here: https://www.dropbox.com/s/dxbaignaf8rxcx7/ReklamationsManagement.zip?dl=0

It will definitely not run because a sql connection and has some things in it I not longer use, but maybe you better understand my classes there.

Greetings

Benedikt

Hi,

I would like to customise the default [+] button on my row details column, put another icon and adjust the size and colour.

How do I go about it?

Thank you so much!

I'm using a custom data provider, and testing suggests that some override methods are being called excessively.

The test data consists of 1 data row divided into 3 columns.

If I don't handle any events, OnHeaderValueNeeded  gets called 3 times, as expected.

If I handle the CellDecorationsNeeded event, that event will be called 6 times for the same data, but OnHeaderValueNeeded is unaffected.

However, if I call FitColumnWidthToContent in the Loaded event, CellDecorationsNeeded will be called 18 times and OnHeaderValueNeeded will be called 9 times.

Calls to OnCellValueNeeded also increase from 3 to 9 when FitColumnWidthToContent is utilized.

Now perhaps I'm doing something wrong or I simply misunderstand, but of far greater concern is my override of ItemProperties, which gets called 18 times without calling FitColumnWidthToContent, and, rather oddly, 40 times when I do call FitColumnWidthToContent. This is of concern because I have some iterative code in the ItemProperties override.

Thoughts?

Wayne

Hi

I'm currently fixed to version 2016_3_1024 of UI for WPF.

I'd like to build a protected set of assemblies using the batch build targetting .NET 4.0.

My computer has VS 2017 Community and I have installed the Windows 10 SDK and Windows 8.1 SDK.

If I try to build the Telerik assemblies using the Build_WPF40.Bat file I get errors:-

C:\Windows\Microsoft.NET\Framework\v4.0.30319\Microsoft.Common.targets(2863,5): error MSB3086: Task could not find "AL.exe" using the SdkToolsPath "" or the registry key "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Microsoft SDKs\Windows\v8.0A\WinSDK-NetFx40Tools-x86". Make sure the SdkToolsPath is set and the tool exists in the correct processor specific location under the SdkToolsPath and that the Microsoft Windows SDK is installed

I've tried setting the MSBUILD environment in the batch file to use Visual Studio's MSBUILD but that fails too.

AL.EXE is in the Windows 10 SDK folders.

Any suggestions how I can resolve this?

Hi,

Currently, the row details are shown when any cells in the row is selected. However, I would like to only show my row details only when cells in (eg column A &C) is selected and the row details are different when selecting cells in the same row (but in column A&C).

Thank you.

Hi,

I'd like to position a Shape's text outside of the shape itself. Can this be accomplished in WPF? I found a similar issue in the WinForms forum but the solution is not applicable.