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Great Reads

Calcium: A Modular Application Toolset Leveraging PRISM – Part 2

by Daniel Vaughan

Calcium provides much of what one needs to rapidly build a multifaceted and sophisticated modular application. Includes a host of modules and services, and an infrastructure that is ready to use in your next application.

Multiplatform Avalonia .NET Framework Programming Basic Concepts in Easy Samples

by Nick Polyak

This article explains the most important and basic concepts of Avalonia WPF-like multiplatform UI package.

ListBox Styling (Part 3 - Additional Templates) in Expression Blend and Silverlight

by Alan Beasley

Explanation and examples of Additional Templates and Generated Content of a ListBox. Covering Layout, Transitions, and Animation.

Conceptual Children: A powerful new concept in WPF

by Dr. WPF

This article describes a new approach by which an element can remove its visual and logical relationships to its children while maintaining a conceptual parental relationship with those children.

Latest Articles

ChatGPT API in C# WPF / XAML / MVVM

by Peter Sun (247)

Implement ChatGPT API in C# WPF with GPT3.5-turbo

Xamarin Forms - Validations Made Simple

by Chandru BK

This article will assume you have basic knowledge of C# and Xamarin Forms and shows how to implement the Xamarin Form Validations using simple Data Annotations applied on the models.

Convert a Win32 Project to WinUI3 Automatically

by Michael Chourdakis

A set of tools to create a new VCXPROJ file automatically

Customizing ListBox for a Smooth Animated Navigation Bar in WPF

by vickyqu115

Control featuring design and animations specialized for mobile, but can be elegantly and structurally implemented using ListBox and Animation technologies available in WPF.

All Articles

XAML

Auto scroll behaviour along with selection in WPF datagrid

24 Apr 2024 by Graeme_Grant

I did a quick Google Search wpf datagrid multiselect dragging with scroll[^] and found this working solution: DataGrid auto scrolling when doing selection - solved[^]

Auto scroll behaviour along with selection in WPF datagrid

24 Apr 2024 by Member 16239100

I want a WPF datagrid which can select the rows same as we can do in Win explorer. For the i have implemented some code and need some help in that. Here the autoscroll for up direction is working fine but for downside autoscroll its not working....

ChatGPT API in C# WPF / XAML / MVVM

16 Feb 2024 by Peter Sun (247)

Implement ChatGPT API in C# WPF with GPT3.5-turbo

Cannot edit in celleditingtemplate

16 Feb 2024 by Andre Oosthuizen

Gerry gave the solution, to elaborate on taht - The TextBlock is a read-only control, and that's why you can't edit the content when you double-click on it - MS Learn | TextBlock Class[^] To use editing, you should use an editable control such...

Cannot edit in celleditingtemplate

16 Feb 2024 by 4711a

I have a DataGrid with a DataGridTemplateColumn. I'm not able to edit the Comment field. When I double click on a Comment field, the background changes a expected to LightSalmon and the content of the bound property Comment is shown but I cannot...

Xamarin Forms - Validations Made Simple

9 Feb 2024 by Chandru BK

This article will assume you have basic knowledge of C# and Xamarin Forms and shows how to implement the Xamarin Form Validations using simple Data Annotations applied on the models.

Winforms is dying and using XAML and the designers for it is like pulling teeth. What now?

8 Feb 2024 by Mitchell J.

It's been agessss since I posted here but I came here on a whim this morning and saw this question & it caught my attention As others above have said, Avalonia, .NET MAUI, and WinUI 3 are all decent options. I also find (found?) writing XAML to...

Winforms is dying and using XAML and the designers for it is like pulling teeth. What now?

8 Feb 2024 by Sander Rossel

Adding to the already plenty solutions, I've asked myself this question recently. For a customer, I need to replace old VB6 applications throughout a factory. Web isn't an option as I need to communicate with hardware on the machines (although...

Winforms is dying and using XAML and the designers for it is like pulling teeth. What now?

8 Feb 2024 by logica

Try Flutter, You Won't Be Disappointed I faced the same dilemma as you - choosing the right framework for my next project. I evaluated numerous options, finally deciding on Flutter: it was a game-changer! The development speed and stunning...

Winforms is dying and using XAML and the designers for it is like pulling teeth. What now?

7 Feb 2024 by Pete O'Hanlon

My answer, cross posted from the lounge[^]. If I were still using XAML, I would use Blend with it. It takes a little bit of getting used to, but it's far superior to working with the layout designers in VS. When I do have to write a pure desktop...

Winforms is dying and using XAML and the designers for it is like pulling teeth. What now?

7 Feb 2024 by Richard MacCutchan

Roger Deutsch wrote a series of articles on the subject: Programming Windows 10: UWP Focus (1 of N)[^]. I worked through it all and built the examples successfully. But as all my programming is just for fun I don't think I will use it much in future.

Winforms is dying and using XAML and the designers for it is like pulling teeth. What now?

7 Feb 2024 by Graeme_Grant

If you want to rant, shoot the breeze, etc, then use The Lounge[^] forum. This is for those who are stuck or stumped and need help with code.

Winforms is dying and using XAML and the designers for it is like pulling teeth. What now?

7 Feb 2024 by honey the codewitch

I'm used to being able to whip up a simple to moderately complicated windows application using Windows Forms, and being able to get it to lay out everything without too much fuss. I can spend most of my time on the logic. This is good. Now, with...

Insufficient memory to continue the execution of the program for C# WPF

3 Feb 2024 by mojtabahakimian

Project: I had Accounting project made in MS Access ADP 2003 project that connects to SQL Server database , Because it is not possible to create a beautiful and modern user interface with animation in Access, I decided to rewrite my program, I...

Convert a Win32 Project to WinUI3 Automatically

20 Jan 2024 by Michael Chourdakis

A set of tools to create a new VCXPROJ file automatically

Error when using controltemplate and binding together in textbox datagrid WPF

15 Jan 2024 by Sh.H.

I found the answer. I should bind the Text to parent, then bind to the Class.

Error when using controltemplate and binding together in textbox datagrid WPF

15 Jan 2024 by Sh.H.

Hi I have a DataGrid. I used TextBox in its cells. I made a ControlTemplate for it. So My problem is when I use controlTemplate, the Binding of TextBox won't work. But if I directly set everything in the DataTemplate, the Binding works perfect....

Customizing ListBox for a Smooth Animated Navigation Bar in WPF

10 Jan 2024 by vickyqu115

Control featuring design and animations specialized for mobile, but can be elegantly and structurally implemented using ListBox and Animation technologies available in WPF.

How do I determine media is playing in mediaelement WPF ?

6 Jan 2024 by Jo_vb.net

You can search @GitHub... This project GitHub - Alphabet85/WPFVideoPlayer: A video player created in WPF using MVVM techniques.[^] uses MVVM concept and it uses properties in VideoPlayerViewModel.cs and ICommands like private ICommand...

How do I determine media is playing in mediaelement WPF ?

6 Jan 2024 by Mike-MadBadger

There is no built-in property for determining whether a MediaElement is playing or not. There are events triggered when a MediaElement is opened or ended. You can use the MediaEnded event to check when the media has finished playing. You can...

How to set size of rectangle to grid in WPF

5 Jan 2024 by Graeme_Grant

You do not need to set the size of the Rectangle if you want to fill the Grid area. Now, if you remove the Width and Height of the Grid, the Grid will fill the parent...

How do I determine media is playing in mediaelement WPF ?

5 Jan 2024 by Graeme_Grant

A quick Google search: WPF MediaElement is playing? - Google Search [^] found this: How to: Control a MediaElement (Play, Pause, Stop, Volume, and Speed) - WPF .NET Framework | Microsoft Learn[^] If you read the sample code you will see this:...

How do I make color of my element equal to another element in WPF?

5 Jan 2024 by Graeme_Grant

If it is not working, then you need to point to the property using Path:

How do I make fill with color only one column of datagrid WPF?

5 Jan 2024 by Graeme_Grant

You do not need a Rectangle to set the background color of a cell, you just need to set the Cell Style. Here is a working example:

Is it possible to put this code in XAML WPF ?

5 Jan 2024 by Graeme_Grant

Yes, it is possible, but not recommended. Here are some examples: Bind to a method in WPF? - Stack Overflow[^]

Is it possible to put this code in XAML WPF ?

4 Jan 2024 by Pete O'Hanlon

There is no in-built way that you can directly bind your ItemsSource to the result of a method. Anything you do is going to involve C# at some point. Theoretically, it might be possible to accomplish something of what you want by writing a custom...

How to set size of rectangle to grid in WPF

4 Jan 2024 by Sh.H.

I need to make the size of Rectangle automatically takes the needed size of the Grid. Any idea please? What I have tried:

How do I determine media is playing in mediaelement WPF ?

4 Jan 2024 by Sh.H.

Hi guys. I need to know how can I determine my video is now playing, or in Pause state, or in Stop state. In WPF. Any help please? What I have tried: I couldn't find any try! Just I used MediaElement from Toolbox.

How do I make fill with color only one column of datagrid WPF?

2 Jan 2024 by Gerry Schmitz

Your Rectangle has nothing to use for a "size request" ... at a minimum, give the Rectangle a .MinHeight and a .MinWidth in this case (e.g. 24x24 or 32x32). If the Rectangle was "contained", and "stretched", you wouldn't need to specify...

How do I make color of my element equal to another element in WPF?

2 Jan 2024 by Gerry Schmitz

Your approach to coloring the rectangle appears to be wrong in the first place (HTML vs XAML). Use a static resource as illustrated here since you need the same color in more than one place anyway. (Otherwise you'd use a Rectangle.Fill "object"...

How do I make color of my element equal to another element in WPF?

1 Jan 2024 by Sh.H.

Hello I need to change the color of text in TextBlock equal to color of Rectangle in another part of the Grid. With respect, any kindly Help please? What I have tried:

How do I make fill with color only one column of datagrid WPF?

1 Jan 2024 by Richard MacCutchan

Try it the way shown in this example: DataGridTemplateColumn Class (System.Windows.Controls) | Microsoft Learn[^].

How do I make fill with color only one column of datagrid WPF?

31 Dec 2023 by Sh.H.

I just want to to set background of a cell to Red. I added a rectangle in the cell and change the background to pink. But I don't why my code does not work. Any help please? P.S: Accidentally I changed the Height of rectangle to 10, and I saw...

Is it possible to put this code in XAML WPF ?

31 Dec 2023 by George Swan

My WPF is a bit rusty, but I would suggest that you set the window's DataContext to a view model instance and set the DataGrid Items source to a CustomerList property defined in the view model. So the Xaml would look like this:

Is it possible to put this code in XAML WPF ?

31 Dec 2023 by Sh.H.

Hi everybody. I copy/paste this example code from DataGrid.ItemsSource Property (System.Windows.Controls) | Microsoft Learn[^]

Multiplatform UI Coding with AvaloniaUI in Easy Samples. Part 1 - AvaloniaUI Building Blocks

21 Dec 2023 by Nick Polyak

Avalonia is a great new multiplatform UI package similar but in many respects better than WPF. This is an introductory tutorial article.

Multiplatform Avalonia .NET Framework Programming Basic Concepts in Easy Samples

21 Dec 2023 by Nick Polyak

This article explains the most important and basic concepts of Avalonia WPF-like multiplatform UI package.

Multiplatform Avalonia .NET Framework Programming Advanced Concepts in Easy Samples

21 Dec 2023 by Nick Polyak

This article covers important concepts of Avalonia/WPF needed for programming and software design

Basics of XAML in Easy Samples for Multiplatform Avalonia .NET Framework

21 Dec 2023 by Nick Polyak

This article describes basic functionality of Avalonia XAML providing easy to understand samples

How do I using resource colors in doubleanimation WPF?

13 Dec 2023 by Dave Kreskowiak

Your resource is a SolidColorBrush, not a Color, which is what From expects. I think your resource should be: #FF2E353F

How do I using resource colors in doubleanimation WPF?

13 Dec 2023 by Sh.H.

Hi folks. I tried to animate my ToggleButton during MouseEnter and MouseLeave. Below code works when I use directly the color code. But if I reference it to a resource, it doesn't work and give me exception. Exeption Thrown:...

Why doubleanimation doesn't work on mainwindow.load? Wpf VB.NET

10 Dec 2023 by Sh.H.

Solved! Sub New() InitializeComponent() TheMainWindow.Opacity = 0 End Sub Private Sub TheMainWindow_Loaded(sender As Object, e As RoutedEventArgs) Handles TheMainWindow.Loaded 'Fade in MainWindow page. ...

Why doubleanimation doesn't work on mainwindow.load? Wpf VB.NET

10 Dec 2023 by Dave Kreskowiak

It doesn't work because in the constructor of the Window class, you have only created an instance of the class, you have NOT created the window handle or even the window GDI objects yet. Try moving that fade code to the window Loaded event.

Why doubleanimation doesn't work on mainwindow.load? Wpf VB.NET

10 Dec 2023 by Sh.H.

Hi. In my designed program, pages change with fade effect which changes the OpacityProperty in DoubleAnimation. But I surprised why DoubleAnimation doesn't work on MainWindow.Loaded ? I mean at the starting of program, it doesn't work. Any Idea...

Use WPF to Create a Day and Night Theme Switch Button

5 Dec 2023 by vickyqu115

How to create a day and night theme switch button using WPF

How may I add text and rotated font icon together on a button in WPF ?

2 Dec 2023 by Sh.H.

This is final solution. Thanks Chris Copeland. ...

How may I add text and rotated font icon together on a button in WPF ?

27 Nov 2023 by Chris Copeland

Could you not do something like: ...

How may I add text and rotated font icon together on a button in WPF ?

27 Nov 2023 by Sh.H.

Hi people I have a text which is "Login" and a font icon. So I want to rotate the font icon 90 degree, but not the text. I tried below code, but no luck. Any kindly idea please? What I have tried:

How do I blur my background in WPF?

26 Nov 2023 by Maciej Los

What about an idea on this topic: Developing a C# WPF Window with a Blurred Transparent Background[^]?

How do I blur my background in WPF?

26 Nov 2023 by Gerry Schmitz

Quote: The AcrylicBrush is a Brush that implements an acrylic effect with customizable parameters. AcrylicBrush - Windows Community Toolkit | Microsoft Learn[^]

How do I blur my background in WPF?

26 Nov 2023 by Sh.H.

Hi guys I tried a lot search on the net But I coudn't find how can I make the background of my application blur. I mean I like to see desktop blur which is behind of my application. Any kindly suggestions? What I have tried: Just searching the...

How to go to next control on tab button press in MVVM

19 Oct 2023 by Member 10371658

I have a XAML form in MVVM, and there are some textbox and button controls, and I set the TabIndex property for that control, but when I click on tab button from keyboard, it's going to control according to tabindex set. Please help how to set...

How to go to next control on tab button press in MVVM

18 Oct 2023 by Graeme_Grant

MVVM has nothing to do with the Tab order of controls. TabIndex sets the tab order when the Tab key is pressed. If you want a different Tabbing order, then change the TabIndex to the order that you want.

XAML Data to Code

27 Sep 2023 by Sergey Alexandrovich Kryukov

How to generate C# code from XAML? But why? Anyway, this question is answered, but this is not the main part…

In a row elements of datagrid having 3 textbox . I want all three textbox value should be in the same range

20 Sep 2023 by kiran biradar

i have a datagrid of 4 columns in that each column has 8 values.first column is non-editable and other three are editable and are textboxes. so my requirement is in first row i have 3 text boxes , and all the threee textboxes should accepts the...

Wpf refresh the image when the URI source is changed

12 Sep 2023 by Member 16091538

The UI doesn´t recognize the changes of the Imagestatuspath because of following reasons: 1 UI elements only can regcognize changes of properties in bindings when their class implement INotifyPropertyChanged 2 When you implement...

Improved WPF MenuItem Template

31 Aug 2023 by Sergey Alexandrovich Kryukov

Improvements used to fix an annoying WPF MenuItem defect related to icons

Wpf-blend how to edit item template or control template visually in xaml designer?

26 Jul 2023 by zlian_0

Same issue for me. MS removed template visual designer and resource manage view since VS2019. The best workaround I know so far is to edit raw XAML and use the XAML hot reload to view change at runtime. I think maybe they are thinking of phasing...

Wpf-blend how to edit item template or control template visually in xaml designer?

26 Jul 2023 by Ahmad_kelany

Hello everyone, I have a treeview:

C# MAUI images are not showing in imagebutton

10 Jul 2023 by suhail malik 2023

hi, I have image placed in resources/images folder. Trying to put image in some imagebuttons but images are not being shown on screen. any help is much appreciated. What I have tried:

C# MAUI images are not showing in imagebutton

10 Jul 2023 by Dave Kreskowiak

Or you could just get rid of the "images\" part of the filepaths in your Source attributes.

C# MAUI images are not showing in imagebutton

10 Jul 2023 by Andre Oosthuizen

If the images folder is outside the root folder, you need to tell your code as well - You first need to set your images Build Action to Embedded resource and set value for 'MyImageSource' in your view model constructor. In your project -...

Serialize or deserealize a configuration full of circular references?

2 Jul 2023 by CodeWraith

I am writing an emulator for a small 8 bit computer. It's a kind of prototyping and debugging tool for the real thing I have on a breadboard. It already can emulate highly timing sensitive code and give me information about what is going on...

Serialize or deserealize a configuration full of circular references?

2 Jul 2023 by CodeWraith

Well, I have found a solution. It's a little bit of work, but it will do the job. As I now see it, there are two concerns that should be separated. One thing is the configuration, which I want to be serializable, the other thing are the emulator...

Insufficient memory to continue the execution of the program for C# WPF

21 Jun 2023 by OriginalGriff

To add to what Ralf and Patrice have said ... The only way that the code you show could cause that error message is if this code private void Window_Loaded(object sender, RoutedEventArgs e) { new HEAD_LST_FROOSH22().Show(); ...

Insufficient memory to continue the execution of the program for C# WPF

21 Jun 2023 by Patrice T

Quote: Insufficient memory to continue the execution of the program for C# WPF You barely gave us enough information for wild guesses, but enough for sensible solutions. Yhe only sensible thing to do is to try on PC with 12GB or 16 GB to see if...

Insufficient memory to continue the execution of the program for C# WPF

21 Jun 2023 by Ralf Meier

It's difficult to say something with this less Information ... but : 8 GB Ram with Win10 is not a lot of Memory because Windwos itself takes up to 5 GB for it's own. Now it depends on your Application what happens with the rest of the Memory and...

In WPF, how do I bind changeable values from codebehind into animation in XAML?

19 Jun 2023 by tb0rg

The wanted state is like this: There are notoverlaping containers (Borders) placed together on common canvas. When choosen Border is leftclicked, it is zoomed-in by animation and all other Borders are zoomed-out/moved at the same time. All...

How do I load/save the selected item of a combobox embedded in a listview in WPF?

3 Jun 2023 by FatalError0x4c

I can't simply set the x:Name attribute of the ComboBox because there are more than one. I also don't know how to get a specific ComboBox from code, to set/get the Text property. Here is a simplified version of my XAML file: ...

WinUI3 in Existing Win32 Applications

6 May 2023 by Michael Chourdakis

How to use the WinUI3 controls in a plain Win32 application without packaging

Why default value of datagridcomboboxcolumn does not appear in the datagrid in C# WPF?

2 May 2023 by Graeme_Grant

When I hit an issue, sometimes I like to remove the noise and break out a small project that focuses on the main issue. I have done just that for you. Start a new WPF project with the name WpfDataGridComboBox and drop this code in and you can...

Why default value of datagridcomboboxcolumn does not appear in the datagrid in C# WPF?

2 May 2023 by mojtabahakimian

Project subject: I had an MS Access 2003 adp VBA project that would connect to SQL Server Database, Now I'm converting that project to C# WPF, and I'm going to save data directly into SQL Server database from DataGrid in C# WPF Detail: I have...

How to add reference to dll in WPF?

29 Apr 2023 by TAUSEEF KALDANE

hello...i have create a custom textbox using "Windows Forms Control Library". And i want to use that textbox in wpf. How do I add reference to that dll and use that dll in xaml code?

How to add reference to dll in WPF?

29 Apr 2023 by Member 15991827

These days it's under Dependencies, right click to add reference, or go to Project > Add Project Reference.

A Simple Property Grid Control

11 Apr 2023 by IssamTP

A .NET XAML user control to get a simple PropertyGrid

How to avoid window freeze issue while using fileopenpicker in winui 3?

6 Apr 2023 by Fazil13

I am using FileOpenPicker to select the file for that i am initializing with the mainwindow handle by using this API WinRT.Interop.InitializeWithWindow.Initialize but after closing the FileOpenPicker the mainwindow got freezes to retrieve the...

How to avoid window freeze issue while using fileopenpicker in winui 3?

6 Apr 2023 by Gerry Schmitz

You're mixing Windows RT and WPF. You have a hack that is apparently "just working" (async interop). Stick to what is "typical". The OpenFileDialog - The complete WPF tutorial[^]

How to responsive tab control in WPF?

4 Apr 2023 by Graeme_Grant

Do not use fixed sizes like: Height="554" Let the TabControl fit the parent container content area. UPDATE I put your XAML (with the helix control removed) in my sample app and made a couple of tweaks and is now responsive, ie: no...

How to responsive tab control in WPF?

4 Apr 2023 by Ridhdhi Vaghani

What I want to do is that when I maximize the WPF window the TabControl should also be responsive with the WPF window. But in the following code the TabControl does not become responsive What I have tried: this my Xaml code:-

How to name a picture take from a movil in xamarin form

17 Mar 2023 by Luis M. Rojas

Was easy: var name=photo.OriginalFilename;

How to name a picture take from a movil in xamarin form

17 Mar 2023 by Luis M. Rojas

Hello everybody, I am new in xamarin form, I know how to take a picture, but: How do i get the name o named it in order to save it? What I have tried: I tried microsoft doc, web info

Wpf checkbox template shows error

3 Mar 2023 by Christopher Fernandes

What is the issue here it is showing these error Error XDG0018 '{DependencyProperty.UnsetValue}' is not a valid value for the 'System.Windows.Controls.Control.Template' property on a Setter. Error XDG0006 Object reference not set to an instance...

How to responcive WPF window ?

23 Feb 2023 by Member 15746979

I tried a lot but I can't get it to be responsive please help me get it to be responsive What I have tried: This is my code for WPF(XAML):-

How to responcive WPF window ?

23 Feb 2023 by Graeme_Grant

Don't do this with your elements (controls): Width="98" Height="46" Let the container controls (eg: Grid) do the work for you.

WINDOW style property from an external (DLL) resource dictionary doesn't apply in design mode

18 Feb 2023 by Simos Sigma

I have two different projects... A WPF Control Library project where, among other files, I have some Resource Dictionary files... And a WPF Application project where into it's references I have add my WPF Control Library. My problem is when I...

Writing Custom Control with New WPF XAML Designer

9 Feb 2023 by Stanko Milošev

How to either migrate to the new XAML designer extensibility or write WPF custom control extensibility model based on .designtools.dll.

How can I pass a string from windows.xaml to a usercontrol.xaml

8 Feb 2023 by Max Speed 2022

hi, i have a Mainwindow.Xaml(wpf form) and 2x UserControl(EventPage.xaml and dashboard.xaml) inside this MainWindow.xaml i have a textbox and a button and i using this code to switch between my forms(EventPage.Xaml and Dashboard.Xaml) inside this...

How can I pass a string from windows.xaml to a usercontrol.xaml

8 Feb 2023 by Graeme_Grant

Why are you trying to pass a string in the constructor of the user control? This will only work if you are manually initializing the UserControl and adding to the main window - a one-shot deal. A UserControl is just a class with UI functionality...