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NET6.0

NET6.0

Great Reads

Gidon - Avalonia based MVVM Plugin IoC Container

by Nick Polyak

This article describes Gidon - the first IoC/MVVM plugin framework created for Avalonia.

Embedding Native (Windows and Linux) Views/Controls/Applications into Avalonia Applications in Easy Samples

by Nick Polyak

This article describes embedding native Windows and Linux control into an Avalonia application.

Fededim.Extensions.Configurati...

by Federico Di Marco

Fededim.Extensions.Configuration.Protected is an improved ConfigurationBuilder which allows partial or full encryption of configuration values stored inside any possible ConfigurationSource and fully integrated in the ASP.NET Core architecture using Data Protection API.

Latest Articles

Fededim.Extensions.Configurati...

by Federico Di Marco

Fededim.Extensions.Configuration.Protected is an improved ConfigurationBuilder which allows partial or full encryption of configuration values stored inside any possible ConfigurationSource and fully integrated in the ASP.NET Core architecture using Data Protection API.

Embedding Native (Windows and Linux) Views/Controls/Applications into Avalonia Applications in Easy Samples

by Nick Polyak

This article describes embedding native Windows and Linux control into an Avalonia application.

Gidon - Avalonia based MVVM Plugin IoC Container

by Nick Polyak

This article describes Gidon - the first IoC/MVVM plugin framework created for Avalonia.

All Articles

NET6.0

Gidon - Avalonia based MVVM Plugin IoC Container

27 Feb 2023 by Nick Polyak

This article describes Gidon - the first IoC/MVVM plugin framework created for Avalonia.

Embedding Native (Windows and Linux) Views/Controls/Applications into Avalonia Applications in Easy Samples

26 Dec 2023 by Nick Polyak

This article describes embedding native Windows and Linux control into an Avalonia application.

Fededim.Extensions.Configuration.Protected: The Ultimate Integration between ASP.NET Configuration and Data Protection API

U 4 May 2024 by Federico Di Marco

Fededim.Extensions.Configuration.Protected is an improved ConfigurationBuilder which allows partial or full encryption of configuration values stored inside any possible ConfigurationSource and fully integrated in the ASP.NET Core architecture using Data Protection API.

Update progress bar value while processing in WPF

15 Feb 2023 by Graeme_Grant

Change this: _percent = (100 * currentDevice) / TOTAL_DEVICE; this.Percent = _percent; //100% To this: this.Percent = (100 * currentDevice) / TOTAL_DEVICE; UPDATE #1 As you're binding to the code behind, you do not need...

Data is wrong when setting align right and printing document in C#

28 Feb 2023 by Richard Deeming

StringFormatFlags.DirectionRig...

How to handle the type mismatch during model binding in NET 5?

9 May 2022 by Graeme_Grant

"type mismatch during model binding" Firstly, Price value here is a string: "Price": "28.78", Yet you define you proerty in your class as a decimal type. Yes you have a "type mismatch" error. The error message is very explicit: Message=The...

Could not load file or assembly cefsharp

28 Dec 2022 by Dave Kreskowiak

DON'T use Any CPU. That will run your code as a 32-bit app on 32-bit Windows and 64-bit on 64-bit Windows. The problem you're going to run into is when running on 32-bit Windows and you only included the 64-bit .DLL's for cefsharp, you're going...

Update progress bar value while processing in WPF

16 Feb 2023 by George Swan

Graeme’s solution is excellent. I would just like to add that an alternative approach is to use the generic Progress class. That class captures the UI thread and removes the need for thread marshalling. See Reporting Progress From Async Tasks....

How to fix memorystream object getting disposed exception?

22 Sep 2023 by OriginalGriff

Without your code for both methods, we can't tell for sure - there are so many ways you could be doing things. But ... we can guess based on the almost negligible amount of information you have given us. If you are creating a stream in one...

How to fix memorystream object getting disposed exception?

23 Sep 2023 by Graeme_Grant

To expand on what @OriginalGriff has said, here is an example of what he was talking about: static void Main(string[] args) { // Create a MemoryStream to write text to using (MemoryStream memoryStream = new MemoryStream()) { ...

How to fix memorystream object getting disposed exception?

25 Sep 2023 by Dave Kreskowiak

You need to go lookup what "using" does in C#. Your code: public MemoryStream? Export() { using var stream = new MemoryStream(); ... blah ... return stream; } That "using" statement is telling the code to dispose the stream...

CS0234: the type or namespace name does not exist ...

N 23 Apr 2024 by Dave Kreskowiak

You most likely don't have a reference to PresentationFramework.dll set in your project.

How to handle the type mismatch during model binding in NET 5?

9 May 2022 by Virendra S from Bangalore, Karnataka

public enum SaleType { [EnumMember(Value = "COD")] COD, [EnumMember(Value = "ONLINE")] ONLINE, [EnumMember(Value = "PICKUP")] PICKUP, [EnumMember(Value = "OTHER")] OTHER } ...

Cannot pass data from view to controller when list is big

14 Apr 2022 by Member 12885549

I have functions to view/remove data: [HttpGet] public IActionResult Index() { ViewData["table1"] = _repository.GetAll("table1").ToList(); ViewData["table2"] = _repository.GetAll("table2").ToList(); return...

Cannot pass data from view to controller when list is big

14 Apr 2022 by Dave Kreskowiak

There's a limit on the size of the request. See c# - Increase upload file size in Asp.Net core - Stack Overflow[^]. Be sure to read ALL of the answers before tinkering with your code. There's multiple possible solutions depending on your exact...

Select all values by type in MVC view

8 May 2022 by Member 12885549

I have table like showed below. I want to check/uncheck (for now just trying out check) values in the table based on the type I select. Could this be done somehow like this? Or do I somehow need to send request from javascript to see updated...

How do I create an event handler for a text box control in VB.NET?

18 Apr 2022 by Richard MacCutchan

Private Sub txtUserName_KeyPressed(sender As Object, e As EventArgs) Handles txtUserName.Press As far as I am aware there is no TextBox event named Press. The event you want is named KeyPress

How do I create an event handler for a text box control in VB.NET?

19 Apr 2022 by Ralf Meier

The answer from Richard is not complete correct ... With the KeyPressed-Event from a Control (Textbox) you get not e as EventArgs but e as KeyPressEventArgs. The Difference is that with this Arguments you get a class which delivers you with...

Select all values by type in MVC view

8 May 2022 by Sni.DelWoods

Maybe the form collection is a solution: var selectedKeys = Request.Form.Keys.Where(k=> k.EndsWith(".Checked", System.StringComparison.OrdinalIgnoreCase)); Returns: 1.Checked 3.Checked

How to handle the type mismatch during model binding in NET 5?

9 May 2022 by L Hills

See this page for docs on JsonConverters. For the price, I guess your converter should try to parse whatever is passed in to a decimal and if it can't be done return a default? For discount check for an empty string and return 0.00, presumably.

How do I use contentdialog in winui3

6 Jun 2022 by Sascha Manns

I have built an unpackaged app with .Net6 and WinUI3. Before launching the Main Window, i do some checks and API Requests. If one fails, i would like to communicate it to the user. I built a method: internal static async void...

How do I use contentdialog in winui3

30 Aug 2022 by Dimitri Gard

Hello Put the XAMLRoot of the in the windows With Winui3, Windows has no xamlroot

How to start a blazor server from another application.

9 Sep 2022 by Magnus Sydoff

Hello all, Background: I'm writing an application that in some cases will have an Blazor UI. Due to this I want to deliver the Blazor UI part as a plug-in. I already have a few plug-ins that are non UI and that works fine. Since I'm a newbie when...

Virtual desktop is null of msedge and notepad++

29 Sep 2022 by DoingWork

I am getting Virtual Desktop of each running process (by handles) by Using Windows APIs and following code snippet. What I have tried: List handles = GetWindowsHandles(); foreach (var hWnd in handles) { VirtualDesktop Virtual_Desktop...

Add and concat values tuple list .NET

5 Oct 2022 by Member 12885549

I have following code: var failed = new List name, IDictionary failedProducts)>(); foreach (var ids in batches) { var batch = Check(names, ids.ToArray()); // List checker,...

Add and concat values tuple list .NET

5 Oct 2022 by George Swan

Try something along these lines Dictionary failedDict = new() { { 0, new string[] { "A", "B", "C" } }, { 1, new string[] { "D", "E", "F" } } }; Dictionary batchDict = new() ...

Could not load file or assembly cefsharp

28 Dec 2022 by huynhminh97

I have a WPF net core project and it's using CEF ChromiumWebBrowser, in the debug mode it run ok. Then I create Setup Project to make file msi file for client but it has error "File 'CefSharp.Core.Runtime.dll' of project output 'Publish Items...

Could not load screen which has chromiumwebbrowser in WPF net core project

2 Jan 2023 by huynhminh97

I have a WPF Project, in MainWindow.xaml there are 1 grid which contain button, 1 cefsharp ChromiumWebBrowser. When loading window Grid is Visible and ChromiumWebBrowser is Hidden. If I click the button, Grid is Hidden and ChromiumWebBrowser is...

Could not load screen which has chromiumwebbrowser in WPF net core project

29 Dec 2022 by Graeme_Grant

It sounds like you are missing a DLL. Have you compared the DLLs in the Debug and release folders? When you install, have you compared the install folder DLLs to the other two? Can you see any differences? You may have to manually include...

Could not update WPF app version without restart window

3 Jan 2023 by huynhminh97

My program is a WPF app which is installed into Program Files (x86) folder, in this app I have a method called every 30 minutes to compared version of current app and version of .msi file in local folder. If version of .msi file is the lastest,...

Could not update WPF app version without restart window

3 Jan 2023 by Graeme_Grant

Check out this solution: GitHub - ravibpatel/AutoUpdater.NET: AutoUpdater.NET is a class library that allows .NET developers to easily add auto update functionality to their classic desktop application projects.[^]

Move the button horizontally in grid of WPF app

31 Jan 2023 by huynhminh97

My WPF app has many buttons and they are ordered on 1 row as the below picture: https://i.stack.imgur.com/hEIDk.png[^] What I want: When user click the left arrow, button will move left 1 column as below and and vice versa for the right arrow...

Move the button horizontally in grid of WPF app

31 Jan 2023 by Richard Deeming

Sounds like you're looking for a carousel control: WPF: Carousel Control[^] A Custom WPF Carousel Control[^] Carousel - Windows Community Toolkit | Microsoft Learn[^]

Check connection of device through USB port

2 Feb 2023 by Chris Copeland

Using C# you can query the PnP devices on the system by running: using (var search = new ManagementObjectSearcher(@"Select * From Win32_PnPEntity Where DeviceID Like ""USB%""")) { using (var collection =...

Update progress bar value while processing in WPF

16 Feb 2023 by huynhminh97

I have a screen which used to check connection with multiple devices by COM/USB Port as the below picture https://i.stack.imgur.com/CAjK0.png[^] When user click button Check Device if checking a device connection is finished, icon good or not...

Data is wrong when setting align right and printing document in C#

28 Feb 2023 by huynhminh97

I have PrintPageEvent to print document in C# and I want to print text with align right. When the text starts with character, it prints normal. But if the text starts with number, data after printing is wrong. For example: Text to print: "Print...

Datagridtemplatecolumn.headertemplate binding is not working

16 Mar 2023 by huynhminh97

I have a DataGrid with 2 column: checkbox column and Permission column. In new mode, when users select checkbox All in header then all child's checkbox is selected and vice versa (This logic is woking now). In edit mode, application will check if...

Datagridtemplatecolumn.headertemplate binding is not working

17 Mar 2023 by Graeme_Grant

With data-binding, you need to implement the PropertyChangedEventHandler to notify the data-binding which property has changed. Here is a base class implementation: public abstract class ObservableObject : INotifyPropertyChanged { protected...

How do I create an event handler for a text box control in VB.NET?

19 Apr 2022 by Slow Eddie

I know this question clearly defines me ass the dolt that I am. However, I have looked in MS Help Files, Dot Net Heaven, and the Related Entry "Application Event Handler for WinForms" here. Dot Net Heaven had nothing, and MS Help, and...

CS0234: the type or namespace name does not exist ...

N 23 Apr 2024 by s yu

I am revising a .Net FW4 project in order to add some WPF components (in net 6). In the revised .csproj,I added the 2 lines in the

CS0234: the type or namespace name does not exist ...

N 30 Apr 2024 by Richard Deeming

As Dave said, it's not as simple as changing the target framework and adding the UseWpf item; the project format has changed quite significantly. Undo your changes, and use the CsprojToVs2017[^] command-line tool to update your project file to...

Update progress bar value while processing in WPF

15 Feb 2023 by OriginalGriff

Move your long running code from the UI thread to a second thread - the BackgroundWorker Class (System.ComponentModel) | Microsoft Learn[^] is a good candidate as it's easy to use and provides progress reporting back to the UI thread.

Check connection of device through USB port

2 Feb 2023 by huynhminh97

My app is running in kiosk machine and it connect with multiple devices as printer, camera, weighing scale, barcode scanner etc through USB port. It will check the connection of device when selected any port. Currently, I only can check which...

Could not load screen which has chromiumwebbrowser in WPF net core project

2 Jan 2023 by huynhminh97

I found the reason that cause this issue. See link Could not load file or assembly CefSharp to get detail information

How to fix memorystream object getting disposed exception?

24 Sep 2023 by xTMx9

Hello! I have a memoryStream object that I am passing from one method to another, each method is in a seperate class. When I build this memorystream in the 1st method, it is working fine but when I pass it to the next method in another class, I...

How to start a blazor server from another application.

9 Sep 2022 by Graeme_Grant

You are wanting to have a Blazor Hybrid app. Here is Microsoft's explanation and examples: ASP.NET Core Blazor Hybrid | Microsoft Docs[^]