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Juicy

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•Created by Juicy on 4/26/2025 in #❓・help

Production environmental variables

Hi, I use IIS for hosting and im trying to setup my environmental variable that i use in runtime config. How do i do that on prod? I remember using some file to do it before but I forgot...

4 replies

CC#

•Created by Juicy on 4/26/2025 in #help

DbConcurrencyException, what am I missing?

Hi, getting this on the SaveChangesAsync and im not really sure what im doing wrong. DbConcurrencyException: The database operation was expected to affect 1 row(s), but actually affected 0 row(s); data may have been modified or deleted since entities were loaded. Inside UserService.cs:

 public async Task SetVariable(Guid productId, Guid userId, string requestKey, string requestValue)
    {
        var product = await productRepository.GetByIdAsync(productId);
        if (product is null)
        {
            throw new ProductNotFoundException(productId);
        }

        var user = await userRepository.GetByIdAsync(productId, userId);
        if (user is null)
        {
            throw new UserNotFoundException(userId);
        }

        user.SetVariable(requestKey, requestValue);
        userRepository.Update(user);
        await unitOfWork.SaveChangesAsync();
    }

 public async Task SetVariable(Guid productId, Guid userId, string requestKey, string requestValue)
    {
        var product = await productRepository.GetByIdAsync(productId);
        if (product is null)
        {
            throw new ProductNotFoundException(productId);
        }

        var user = await userRepository.GetByIdAsync(productId, userId);
        if (user is null)
        {
            throw new UserNotFoundException(userId);
        }

        user.SetVariable(requestKey, requestValue);
        userRepository.Update(user);
        await unitOfWork.SaveChangesAsync();
    }

Inside User.cs:

    public ICollection<UserVariable> Variables { get; set; }

    public void SetVariable(string key, string value)
    {
        ArgumentException.ThrowIfNullOrWhiteSpace(key);

        var existingVariable = Variables.FirstOrDefault(v => v.Key.Equals(key, StringComparison.OrdinalIgnoreCase));

        if (existingVariable != null)
        {
            existingVariable.UpdateValue(value);
        }
        else
        {
            var newVariable = UserVariable.Create(Guid.NewGuid(), Id, key, value);
            Variables.Add(newVariable);
        }
    }

    public ICollection<UserVariable> Variables { get; set; }

    public void SetVariable(string key, string value)
    {
        ArgumentException.ThrowIfNullOrWhiteSpace(key);

        var existingVariable = Variables.FirstOrDefault(v => v.Key.Equals(key, StringComparison.OrdinalIgnoreCase));

        if (existingVariable != null)
        {
            existingVariable.UpdateValue(value);
        }
        else
        {
            var newVariable = UserVariable.Create(Guid.NewGuid(), Id, key, value);
            Variables.Add(newVariable);
        }
    }

Inside UserRepository.cs:

    public void Update(User user)
    {
        dbContext.Set<User>().Update(user);
    }

    public void Update(User user)
    {
        dbContext.Set<User>().Update(user);
    }

62 replies

CC#

•Created by Juicy on 9/14/2023 in #help

❔ SignalR for real-time REST api data in WPF?

Hey, Im working on a hobby WPF application that needs to consume a rest api for real-time updates on game camera positions. Since the camera position data is always updating I want my wpf app to reflect those updates in realtime....would signalR be a good solution or is api polling good enough? Or anyone has any other recommendations for a straightforward way to ensure the client recieves near real-time updates from the rest api? Thanks!

45 replies

CC#

•Created by Juicy on 12/14/2022 in #help

No route matches supplied values but values seem to match?

Hi I am getting this error on return CreatedAtAction:

System.InvalidOperationException: No route matches the supplied values.

System.InvalidOperationException: No route matches the supplied values.

            var response = new UserResponse(
                user.Id,
                user.ProductId,
                user.Username,
                user.Role,
                user.CreatedOnUtc);

            var actionName = nameof(GetByIdAsync);
            var routeValues = new {productId, id = user.Id, cancellationToken};

            return CreatedAtAction(actionName, routeValues, response);

            var response = new UserResponse(
                user.Id,
                user.ProductId,
                user.Username,
                user.Role,
                user.CreatedOnUtc);

            var actionName = nameof(GetByIdAsync);
            var routeValues = new {productId, id = user.Id, cancellationToken};

            return CreatedAtAction(actionName, routeValues, response);

[HttpGet("{id:guid}")]
    public async Task<ActionResult> GetByIdAsync(Guid productId, Guid id,
        CancellationToken cancellationToken = default)
    {

[HttpGet("{id:guid}")]
    public async Task<ActionResult> GetByIdAsync(Guid productId, Guid id,
        CancellationToken cancellationToken = default)
    {

But how are the route values incorrect when im giving it productId and the userId? To note, they also exist in the same controller and user.Id + productId are both guids (productId comes from parameter).Dont really understand what im missing here, let me know if you need me to provide more information

38 replies

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