ASP.NET Core 8 Web API : breakpoint not being hit

Question

I have created an ASP.NET Core 8 Web API project. I updated the program.cs with the desired code, however a breakpoint is not being hit, I can debug the code at entry of the program.cs.

proposalApi.MapGet("/proposals", () => {
    try
    {
        DirectoryInfo dir = new DirectoryInfo(ProposalsDirectory);
        var files = dir.GetFiles("*.txt").Select(x => x.Name).ToList();
        var data = files.Select(x => new
        {
            index = int.Parse(new String(x.Where(Char.IsDigit).ToArray())),
            value = x
        }).OrderByDescending(x => x.index).Select(x => x.value).ToArray();

        return data.Count() == 0 ? Results.NotFound() : Results.Ok(data);
    }
    catch (Exception ex)
    {
        return ErrorDetails(ex);
    }
});

proposalApi.MapGet("/proposals/{fileName}", (int fileName) => {
    try
    {
        string content = File.ReadAllText(ProposalsDirectory + fileName);
        return Results.Ok(content);
    }
    catch (Exception ex)
    {
        return ErrorDetails(ex);
    }
});

URLs attempted:

https://localhost:44312/proposals/proposals

https://localhost:44312/proposals/

Breakpoints:

Web api project code path (fiddle):

https://github.com/nitinjs/upworkify/tree/main/ProposalAPI.Core

Answer 1

Change your code like below, it works in my side.

using ProposalAPI.Core;
using ProposalAPI.Core.Entities;
using System.Text.Json.Serialization;
using System.IO;
using System.Reflection;
using System.Net;

var builder = WebApplication.CreateSlimBuilder(args);

builder.Services.ConfigureHttpJsonOptions(options =>
{
    options.SerializerOptions.TypeInfoResolverChain.Insert(0, AppJsonSerializerContext.Default);
});

var app = builder.Build();

string ProposalsDirectory = Environment.CurrentDirectory + "\\" + @"Content\Proposals\";

Func<Exception, IResult> ErrorDetails = (ex) => {
    return Results.Problem(new Microsoft.AspNetCore.Mvc.ProblemDetails()
    {
        Title = "Unexpected error occurred",
        Detail = ex.Message,
        Status = (int)HttpStatusCode.InternalServerError
    });
};

var proposalApi = app.MapGroup("/proposals");
proposalApi.MapGet("/", () =>{
    try
    {
        DirectoryInfo dir = new DirectoryInfo(ProposalsDirectory);
        var files = dir.GetFiles("*.txt").Select(x => x.Name).ToList();
        var data = files.Select(x => new
        {
            index = int.Parse(new String(x.Where(Char.IsDigit).ToArray())),
            value = x
        }).OrderByDescending(x => x.index).Select(x => x.value).ToArray();

        return data.Count() == 0 ? Results.NotFound() : Results.Ok(data);
    }
    catch (Exception ex)
    {
        return ErrorDetails(ex);
    }
});

proposalApi.MapGet("/{fileName}", (int fileName) => {
    try
    {
        string content = File.ReadAllText(ProposalsDirectory + fileName);
        return Results.Ok(content);
    }
    catch (Exception ex)
    {
        return ErrorDetails(ex);
    }
});

proposalApi.MapPost("/", (string fileName) => {
    try
    {
        string content = File.ReadAllText(ProposalsDirectory + fileName);
        return Results.Ok(content);
    }
    catch (Exception ex)
    {
        return ErrorDetails(ex);
    }
});

proposalApi.MapPut("/", (ModifyProposalModel model) => {
    try
    {
        string filePath = ProposalsDirectory + model.fileName;

        if (File.Exists(filePath))
        {
            File.Delete(filePath);
        }
        FileInfo fle = new FileInfo(filePath);
        FileStream fs = new FileStream(filePath, FileMode.Create, FileAccess.ReadWrite, FileShare.ReadWrite);
        StreamWriter sr = new StreamWriter(fs);
        sr.Write(model.contents);
        sr.Flush();
        sr.Close();
        fs.Close();
        return Results.Ok<string>("Saved successfully");
    }
    catch (Exception ex)
    {
        return ErrorDetails(ex);
    }
});

proposalApi.MapDelete("/", (ModifyProposalModel model) => {
    try
    {
        File.Delete(ProposalsDirectory + model.fileName);
        return Results.Ok<string>("Deleted successfully");
    }
    catch (Exception ex)
    {
        return ErrorDetails(ex);
    }
});

app.Run();