How to authenticate dhis2 users using identity server in ASP.NET core

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.NET1.0

.NET-Compiler-Platform

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I have developed Identity server in asp.net core the problem is I want to use dhis2 users credentials to authenticate the user and get the token that can be used in authentication of the API's below is the implementation

What I have tried:

Identity Server config class

<pre>public class Config
 {

     public static IEnumerable<ApiResource> GetApiResources()
     {
         return new List<ApiResource>
         {
             new ApiResource("myresourceapi", "My Resource API")
             {
                 Scopes =
                 {
                     new Scope("openid")
                 }
             }
         };
     }

     public static IEnumerable<Client> GetClients()
     {
         return new[]
         {
            
             new Client
             {
             ClientId = "application-key-2024",
             AllowedGrantTypes = GrantTypes.ClientCredentials,
             ClientSecrets = 
             { 
                     new Secret("001b8a318-71dc-6700-982e-dd592d0f131".Sha256()) 
             },
             
             RedirectUris = { "http://www.example.org" },
             AllowedScopes = { "openid"},
             RequireConsent = false
             }
         };
     }

 }

Program.cs class

using IdentityServer;

var builder = WebApplication.CreateBuilder(args);
builder.Services.AddIdentityServer()
             .AddDeveloperSigningCredential()
             .AddOperationalStore(options =>
             {
                 options.EnableTokenCleanup = true;
                 options.TokenCleanupInterval = 30; // interval in seconds
             })
             .AddInMemoryApiResources(Config.GetApiResources())
             .AddInMemoryClients(Config.GetClients());

var app = builder.Build();

app.UseIdentityServer();

app.Run();

my service Program.cs class that consumes the token generated

var builder = WebApplication.CreateBuilder(args);

builder.Services.AddAuthentication(options =>
        {
            options.DefaultAuthenticateScheme = JwtBearerDefaults.AuthenticationScheme;
            options.DefaultChallengeScheme = JwtBearerDefaults.AuthenticationScheme;
        }).AddJwtBearer(o =>
        {
            o.Authority = "https://localhost:7197";
            o.Audience = "myresourceapi";
            o.RequireHttpsMetadata = false;
        });

builder.Services.AddAuthorization(options =>
{
    options.AddPolicy("PublicSecure", policy => policy.RequireClaim("application-key-2024", "001b8a318-71dc-6700-982e-dd592d0f131"));
});

ar app = builder.Build();

// Configure the HTTP request pipeline.
if (app.Environment.IsDevelopment())
{
    app.UseSwagger();
    app.UseSwaggerUI();
}

app.UseAuthorization();

app.MapControllers();

app.Run();

Controller class in microservice class

namespace Data_Uploading_Service.Controllers
{
    [Route("api/[controller]")]
    [ApiController]
    public class UploadController : ControllerBase
    {

    [HttpGet]
    [Authorize(Policy = "PublicSecure")]
    public String DataApi()
    {
    return "You have been authenticated";
    }
    
    }
}

So now in order to be authenticated from post man you should provide client ID, client secret, scope and grant_type but what I want is to provide username and password e.g uname = admin, password = district