Blazor Error 400,ReasonPhrase Bad Request Version: 1.1 System.Net.Http.BrowserHttpHandler-CodePudding

Please suggest me. I initial project with Dotnet FrameworkCore6. Create project with Hosted and Individual. I try to use HTTPClient.Get it's work but i use HTTPClient.Put,Post,Delete,Patch i got Error 400. How can i fix it. Now i having 2 project get the same problem.

In blazor page

public async Task OnSubmit(AppFolder args)
{
    args.IsDelete = false;
    args.FolderColor = "";
    args.CreatorId = "";

    var httpClient = _factory.CreateClient("public");

    var result = await httpClient.PostAsJsonAsync("WeatherForecast",args);
    Console.WriteLine("OnSubmit Debug : " result);
  
}

In WeatherController

[HttpPost]
public async Task<ActionResult> PostSomethings(AppFolder args)
{
    Console.WriteLine("Post Debug" args);
    return await Task.Run(() => Ok());
}

I has bypass authen Program.cs

builder.Services.AddHttpClient("public", client => client.BaseAddress = new 
Uri(builder.HostEnvironment.BaseAddress));

I got this Error Message

OnSubmit Debug : StatusCode: 400, ReasonPhrase: 'Bad Request', Version: 1.1, Content: 
System.Net.Http.BrowserHttpHandler BrowserHttpContent, Headers:
{
  Date: Sat, 18 Jun 2022 11:58:57 GMT
  Server: Microsoft-IIS/10.0
  X-Powered-By: ASP.NET
  Content-Type: application/problem json; charset=utf-8
}

CodePudding user response：

If you want to use [POST], [PUT] and [DELETE] you need to decorate your controllers with those attributes [HttpPost] [HttpPut] [HttpDelete]

CodePudding user response：

Best guess:

AppFolder has a required string Name property and you leave it null.

This can easily happen when nullable reference types is ON.

CodePudding user response：

The issue is with the PostAsJsonAsync method... You must tell the framework what is the type of the argument args to serialize. The type of args is AppFolder, and your code should look something like this:

await httpClient.PostAsJsonAsync<AppFolder>("WeatherForecast",args);