Halfbax Posts - Answer Overflow

Halfbax

•Created by Halfbax on 6/28/2024 in #help

Set animation class in blazor doesnt work.

Animations don't work if I set them as variables, see example. If I set them with JavaScript Interop, they work. Can someone explain why this happens?

    private async Task SetTransitionStateAsync(TransitionState state, int animationDelay)
    {
        string translationPrefix = $"transition-opacity ease-linear duration-{animationDelay}"; 
        
        CurrentState = state;        
        switch (CurrentState)
        {
            case TransitionState.Hidden:
                TransitionClass = string.Empty;
                IsVisible = false;
                break;
            case TransitionState.Open:
                TransitionClass = string.Empty;
                break;
            case TransitionState.EnteringStart:
                TransitionClass = $"{translationPrefix} -translate-x-full";
                IsVisible = true;
                break;
            case TransitionState.EnteringEnd:
                TransitionClass = $"{translationPrefix} translate-x-0";
                break;
            case TransitionState.LeavingStart:
                TransitionClass = $"{translationPrefix} translate-x-0";
                break;
            case TransitionState.LeavingEnd:
                TransitionClass = $"{translationPrefix} -translate-x-full";
                break;
        }
        
        await InvokeAsync(StateHasChanged);
  }

    private async Task SetTransitionStateAsync(TransitionState state, int animationDelay)
    {
        string translationPrefix = $"transition-opacity ease-linear duration-{animationDelay}"; 
        
        CurrentState = state;        
        switch (CurrentState)
        {
            case TransitionState.Hidden:
                TransitionClass = string.Empty;
                IsVisible = false;
                break;
            case TransitionState.Open:
                TransitionClass = string.Empty;
                break;
            case TransitionState.EnteringStart:
                TransitionClass = $"{translationPrefix} -translate-x-full";
                IsVisible = true;
                break;
            case TransitionState.EnteringEnd:
                TransitionClass = $"{translationPrefix} translate-x-0";
                break;
            case TransitionState.LeavingStart:
                TransitionClass = $"{translationPrefix} translate-x-0";
                break;
            case TransitionState.LeavingEnd:
                TransitionClass = $"{translationPrefix} -translate-x-full";
                break;
        }
        
        await InvokeAsync(StateHasChanged);
  }

1 replies

CC#

•Created by Halfbax on 6/12/2024 in #help

Pipe is being closed. Trying to pass request body to php process

I am trying to open a php process in my kestrel middleware. Without body everything works fine, but sending a body throws the exception Pipe is being closed. Do you know why?

        try
        {
            Process phpProcess = new()
            {
                StartInfo = new ProcessStartInfo
                {
                    FileName = _phpInterpreterPath,
                    Arguments = $"\"{filePath}\"",
                    RedirectStandardOutput = true,
                    RedirectStandardError = true,
                    RedirectStandardInput = true,
                    UseShellExecute = false,
                    CreateNoWindow = true,
                    Environment =
                    {
                        // ENV VARS
                    }
                }
            };

            phpProcess.Start();

            // Pass the request body to the PHP process
            if (context.Request.ContentLength > 0 || context.Request.ContentType != null)
            {
                await using StreamWriter sw = new(phpProcess.StandardInput.BaseStream);
                await context.Request.Body.CopyToAsync(sw.BaseStream);
                await sw.FlushAsync(); // EXCEPTION IS BEING THROWN HERE
            }

            // Capture the output and errors
            var outputTask = phpProcess.StandardOutput.ReadToEndAsync();
            var errorTask = phpProcess.StandardError.ReadToEndAsync();

            await phpProcess.WaitForExitAsync();

            // RESPONSE HANDLING
        }
        catch (Exception ex)
        {
            // EXCEPTION HANDLING
        }

        try
        {
            Process phpProcess = new()
            {
                StartInfo = new ProcessStartInfo
                {
                    FileName = _phpInterpreterPath,
                    Arguments = $"\"{filePath}\"",
                    RedirectStandardOutput = true,
                    RedirectStandardError = true,
                    RedirectStandardInput = true,
                    UseShellExecute = false,
                    CreateNoWindow = true,
                    Environment =
                    {
                        // ENV VARS
                    }
                }
            };

            phpProcess.Start();

            // Pass the request body to the PHP process
            if (context.Request.ContentLength > 0 || context.Request.ContentType != null)
            {
                await using StreamWriter sw = new(phpProcess.StandardInput.BaseStream);
                await context.Request.Body.CopyToAsync(sw.BaseStream);
                await sw.FlushAsync(); // EXCEPTION IS BEING THROWN HERE
            }

            // Capture the output and errors
            var outputTask = phpProcess.StandardOutput.ReadToEndAsync();
            var errorTask = phpProcess.StandardError.ReadToEndAsync();

            await phpProcess.WaitForExitAsync();

            // RESPONSE HANDLING
        }
        catch (Exception ex)
        {
            // EXCEPTION HANDLING
        }

13 replies

CC#

•Created by Halfbax on 5/3/2024 in #help

Publish Failure of Class Library with WinAppSdk dependency

I have added a class library that references WinAppSDK. Now I am unable to publish my program. I don't encounter any errors while building, only while publishing.

Cannot resolve Assembly or Windows Metadata file 'I:\projects\Name\Shared\Name.Core\bin\Debug\net8.0-windows10.0.22621\win-x64\Name.Windows.Core.dll'

Cannot resolve Assembly or Windows Metadata file 'I:\projects\Name\Shared\Name.Core\bin\Debug\net8.0-windows10.0.22621\win-x64\Name.Windows.Core.dll'

Does the class library require any specific files, such as an app.manifest, to run since I have referenced WinAppSdk?

2 replies

CC#

•Created by Halfbax on 3/27/2024 in #help

Unable to publish WinUI due duplicated WebView2 package from MSIX tooling and nuget package

Hello, I am unable to publish my current software due duplicated packages. I do used a workaround in the past. But it isnt working anymore and I dont know why. WinAppSDK 1.5 Building works, publishing not. This is the workaround. https://github.com/unoplatform/uno/issues/14555#issuecomment-1876175425

1 replies

CC#

•Created by Halfbax on 9/15/2023 in #help

❔ Mapperly | How to map a property?

How can I automatically map ExampleB when ExampleA getting mapped to InternalExampleA

[Mapper]
public class TestMapper
{
    public partial InternalExampleA ToInternalA(ExampleA data);
    public partial InternalExampleB ToInternalB(ExampleB data);
}

public class ExampleA
{
    public Guid Id { get; set; }
    public ExampleB B { get; set; }
}

public class InternalExampleA
{
    public Guid Id { get; set; }
    public ExampleB B { get; set; }
}

public class ExampleB
{
    public Guid AnotherId { get; set; }
}

public class InternalExampleB
{
    public Guid AnotherId { get; set; }
}

[Mapper]
public class TestMapper
{
    public partial InternalExampleA ToInternalA(ExampleA data);
    public partial InternalExampleB ToInternalB(ExampleB data);
}

public class ExampleA
{
    public Guid Id { get; set; }
    public ExampleB B { get; set; }
}

public class InternalExampleA
{
    public Guid Id { get; set; }
    public ExampleB B { get; set; }
}

public class ExampleB
{
    public Guid AnotherId { get; set; }
}

public class InternalExampleB
{
    public Guid AnotherId { get; set; }
}

5 replies

CC#

•Created by Halfbax on 6/30/2023 in #help

❔ Calculating estimated time is inaccurate

Hello, I try to calculate the remaining time. The problem is that the estimated remaining time is pretty inaccurate. The class says that each job takes around 7 seconds, but it is around ~1 second. What might the problem here? Is it because I do use seconds over milliseconds?

public class WorkerTime
{
    /// <summary>
    /// Total amount of jobs
    /// </summary>
    public int Total { get; }

    /// <summary>
    /// Amount of jobs done
    /// </summary>
    public int Done { get; private set; }

    /// <summary>
    /// Estimated remaining time
    /// </summary>
    public TimeSpan TimeRemaining { get; private set; } = TimeSpan.Zero;


    private DateTime Start { get; } = DateTime.UtcNow;

    public WorkerTime(int jobs)
    {
        Total = jobs;
    }

    public void Execute()
    {
        Done++;

        TimeSpan timeTaken = DateTime.UtcNow - Start;
        int jobsLeft = Total - Done;

        int totalSeconds = (int)timeTaken.TotalSeconds;

        if (totalSeconds == 0) 
            return;

        int timeRemaining = Done / totalSeconds * jobsLeft;
        TimeRemaining = TimeSpan.FromSeconds(timeRemaining);
    }

    public TimeSpan Stop()
    {
        return DateTime.UtcNow - Start;
    }
}

public class WorkerTime
{
    /// <summary>
    /// Total amount of jobs
    /// </summary>
    public int Total { get; }

    /// <summary>
    /// Amount of jobs done
    /// </summary>
    public int Done { get; private set; }

    /// <summary>
    /// Estimated remaining time
    /// </summary>
    public TimeSpan TimeRemaining { get; private set; } = TimeSpan.Zero;


    private DateTime Start { get; } = DateTime.UtcNow;

    public WorkerTime(int jobs)
    {
        Total = jobs;
    }

    public void Execute()
    {
        Done++;

        TimeSpan timeTaken = DateTime.UtcNow - Start;
        int jobsLeft = Total - Done;

        int totalSeconds = (int)timeTaken.TotalSeconds;

        if (totalSeconds == 0) 
            return;

        int timeRemaining = Done / totalSeconds * jobsLeft;
        TimeRemaining = TimeSpan.FromSeconds(timeRemaining);
    }

    public TimeSpan Stop()
    {
        return DateTime.UtcNow - Start;
    }
}

10 replies

CC#

•Created by Halfbax on 5/26/2023 in #help

❔ JSON serialization fails

After the serialization RiotChampionWrapper.Champions is null. The problem might be that each item has a different name. How can I fix it?

public class RiotChampionWrapper
{
    [JsonPropertyName("data")]
    private List<RiotChampion> Champions { get; set; }
}

public class RiotChampion
{
    [JsonPropertyName("id")]
    public string Id { get; set; }

    [JsonPropertyName("key")]
    public string Key { get; set; }

    [JsonPropertyName("name")]
    public string Name { get; set; }
}

public class RiotChampionWrapper
{
    [JsonPropertyName("data")]
    private List<RiotChampion> Champions { get; set; }
}

public class RiotChampion
{
    [JsonPropertyName("id")]
    public string Id { get; set; }

    [JsonPropertyName("key")]
    public string Key { get; set; }

    [JsonPropertyName("name")]
    public string Name { get; set; }
}

RiotChampionWrapper? items = JsonSerializer.Deserialize<RiotChampionWrapper>(data);

RiotChampionWrapper? items = JsonSerializer.Deserialize<RiotChampionWrapper>(data);

{
  "type": "champion",
  "format": "standAloneComplex",
  "version": "13.10.1",
  "data": {
    "Aatrox": {
      "id": "Aatrox",
      "key": "266",
      "name": "Aatrox"
    },
    "Ahri": {
      "id": "Ahri",
      "key": "103",
      "name": "Ahri"
    }
  }
}

{
  "type": "champion",
  "format": "standAloneComplex",
  "version": "13.10.1",
  "data": {
    "Aatrox": {
      "id": "Aatrox",
      "key": "266",
      "name": "Aatrox"
    },
    "Ahri": {
      "id": "Ahri",
      "key": "103",
      "name": "Ahri"
    }
  }
}

8 replies

CC#

•Created by Halfbax on 2/23/2023 in #help

❔ Unpackaged WinUI 3 app raises 0xc000027b after publish

I do have a problem and I would like to use your help. My app is not starting after publishing it with following settings.

<?xml version="1.0" encoding="utf-8"?>

<Project>
  <PropertyGroup>
    <Configuration>Debug</Configuration>
    <Platform>x64</Platform>
    <PublishDir>bin\Publish</PublishDir>
    <PublishProtocol>FileSystem</PublishProtocol>
    <_TargetId>Folder</_TargetId>
    <TargetFramework>net7.0-windows10.0.19041.0</TargetFramework>
    <RuntimeIdentifier>win10-x64</RuntimeIdentifier>
    <SelfContained>true</SelfContained>
    <PublishSingleFile>false</PublishSingleFile>
    <PublishReadyToRun>false</PublishReadyToRun>
    <PublishTrimmed>false</PublishTrimmed>
  </PropertyGroup>
</Project>

<?xml version="1.0" encoding="utf-8"?>

<Project>
  <PropertyGroup>
    <Configuration>Debug</Configuration>
    <Platform>x64</Platform>
    <PublishDir>bin\Publish</PublishDir>
    <PublishProtocol>FileSystem</PublishProtocol>
    <_TargetId>Folder</_TargetId>
    <TargetFramework>net7.0-windows10.0.19041.0</TargetFramework>
    <RuntimeIdentifier>win10-x64</RuntimeIdentifier>
    <SelfContained>true</SelfContained>
    <PublishSingleFile>false</PublishSingleFile>
    <PublishReadyToRun>false</PublishReadyToRun>
    <PublishTrimmed>false</PublishTrimmed>
  </PropertyGroup>
</Project>

In the event viewer I can see that the exception 0xc000027b is raised.

3 replies

CC#

•Created by Halfbax on 2/14/2023 in #help

❔ Data doesnt get set with DispatcherQueue.TryEnqueue()

I try to get my camera feed with opencv on a non UI thread in WinUI 3. It's weird the data gets pushed into the queue, but the function doesn't get fired. I start CaptureAsync with Task.Run() because when I start it with CaptureAsync().ConfigureAwait(false); the UI gets blocked even with Task.Yield.

private async Task CaptureAsync()
{
    _cts.TryReset();

    if (CurrentSource is null)
        return;

    DispatcherQueue? queue = DispatcherQueue.GetForCurrentThread();
    try
    {
        _capture = VideoCapture.FromCamera(CurrentSource.Id);

        byte[] data;
        while (!_cts.IsCancellationRequested)
        {
            using Mat? image = _capture.RetrieveMat();

            if (image.Height <= 0)
                continue;

            data = image.ToBytes();
            queue?.TryEnqueue(() => SetData(data)); // data != null, checked

            await Task.Yield();
        }
    }
    catch (Exception e)
    {
        Console.WriteLine(e);
        throw;
    }
}

// doesnt get fired once
private void SetData(byte[] data)
    => CurrentFrame = data;

private async Task CaptureAsync()
{
    _cts.TryReset();

    if (CurrentSource is null)
        return;

    DispatcherQueue? queue = DispatcherQueue.GetForCurrentThread();
    try
    {
        _capture = VideoCapture.FromCamera(CurrentSource.Id);

        byte[] data;
        while (!_cts.IsCancellationRequested)
        {
            using Mat? image = _capture.RetrieveMat();

            if (image.Height <= 0)
                continue;

            data = image.ToBytes();
            queue?.TryEnqueue(() => SetData(data)); // data != null, checked

            await Task.Yield();
        }
    }
    catch (Exception e)
    {
        Console.WriteLine(e);
        throw;
    }
}

// doesnt get fired once
private void SetData(byte[] data)
    => CurrentFrame = data;

I do have two options. Fix the Task.Yield() problem or let it run on a secondary thread and fix the queue data. What would you do?

2 replies

CC#

•Created by Halfbax on 2/7/2023 in #help

❔ Does Grpc works with net7 on IIS?

Is grpc supported with net7 on a iis server? This articles only says net5 https://learn.microsoft.com/en-us/aspnet/core/grpc/aspnetcore?view=aspnetcore-7.0&tabs=visual-studio#server-options

11 replies

CC#

•Created by Halfbax on 2/2/2023 in #help

❔ Custom "block" statement such as while..do

Hello, is it possible to build a custom block? For example

// usage
DoRequestAsync
{
    Categories = await _stockBrowser.GetCategoriesAsync();
}

// code behind DoRequest
private async Task DoRequestAsync()
{
    try
    {
        // children
    }
    catch (Exception e)
    {
        Console.WriteLine(e);
        Error = true;
    }
}

// usage
DoRequestAsync
{
    Categories = await _stockBrowser.GetCategoriesAsync();
}

// code behind DoRequest
private async Task DoRequestAsync()
{
    try
    {
        // children
    }
    catch (Exception e)
    {
        Console.WriteLine(e);
        Error = true;
    }
}

10 replies

CC#

•Created by Halfbax on 2/1/2023 in #help

❔ Predicate in LINQ GroupBy

Hello, how can I replace item.Name with the predicate?

public static ObservableCollection<GroupInfo> Create<TData>(IEnumerable<TData> data, Expression<Func<TData, string>> predicate)
    where TData : class
{
    IEnumerable<GroupInfo> query = data
        .GroupBy(item => item.Name.ToUpper())
        .OrderBy(g => g.Key)
        .Select(g => new GroupInfo(g.Key, g));

    return new ObservableCollection<GroupInfo>(query);
}

public static ObservableCollection<GroupInfo> Create<TData>(IEnumerable<TData> data, Expression<Func<TData, string>> predicate)
    where TData : class
{
    IEnumerable<GroupInfo> query = data
        .GroupBy(item => item.Name.ToUpper())
        .OrderBy(g => g.Key)
        .Select(g => new GroupInfo(g.Key, g));

    return new ObservableCollection<GroupInfo>(query);
}

26 replies

CC#

•Created by Halfbax on 11/16/2022 in #help

❔ Getting exe path of entry point

I do have a WinUI 3 project and I am unable to retrieve the exe path of my application. That's what I have tried. But I get the dll only.

string? target = Assembly.GetAssembly(typeof(App))?.GetName().CodeBase;
// returns the dll path instead of the exe

string? target = Assembly.GetAssembly(typeof(App))?.GetName().CodeBase;
// returns the dll path instead of the exe

18 replies

CC#

•Created by Halfbax on 8/31/2022 in #help

XAML Binding error, cannot find source

Hello, I do get a binding error when trying to bind a string from codebehind as content of a ComboBoxItem in CompositeCollection.

<ComboBox.ItemsSource>
    <CompositeCollection>
        <ComboBoxItem Visibility="Collapsed" Content="{Binding Test, RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type local:MultiSelectionDropdown}}}"/>
        <CollectionContainer Collection="{Binding Source={StaticResource ResourceKey=Pipeline}}"/>
    </CompositeCollection>
</ComboBox.ItemsSource>

<ComboBox.ItemsSource>
    <CompositeCollection>
        <ComboBoxItem Visibility="Collapsed" Content="{Binding Test, RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type local:MultiSelectionDropdown}}}"/>
        <CollectionContainer Collection="{Binding Source={StaticResource ResourceKey=Pipeline}}"/>
    </CompositeCollection>
</ComboBox.ItemsSource>

I am trying to bind Test.

3 replies

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