從Windows窗體調用.NET Core REST API以發送包括IFormFile的數據

Question

我有一個使用此模型的.NET核心Web Api：

public class UserForRegisterDto
{
    [Required]
    public string UserName { get; set; }
    [Required]
    public string Name { get; set; }
    [Required]
    public string LastName { get; set; }
    [Required]      
    public string Password { get; set; }
    [Required]
    public string PhoneNumber { get; set; }
    [Required]
    public string MobilePhone { get; set; }

    [Required]
    public IFormFile Photo { get; set; }
}

另一方面，我有一個使用.NET 4的Windows窗體應用程序，我嘗試使用此類和代碼將數據發送到api：

public class UserForRegisterDto
{
    public string UserName { get; set; }
    public string Name { get; set; }
    public string LastName { get; set; }
    public string Password { get; set; }
    public string PhoneNumber { get; set; }
    public string MobilePhone { get; set; }
    public byte[] Photo { get; set; }
}

發送此數據的代碼是：

List<UserForRegisterDto> registrationList = Mapper.Map<List<UserForRegisterDto>>(usersList);
AuthenticatedHttpClientHandler clientHandler = new AuthenticatedHttpClientHandler(user.Id, Uow, _refreshTokenService);
clientHandler.UseDefaultCredentials = true;
HttpClient client = new HttpClient(clientHandler);
client.BaseAddress = new Uri(ConfigurationManager.AppSettings["appUrl"].ToString());
StringContent content = new StringContent(JsonConvert.SerializeObject(registrationList), Encoding.UTF8, "application/json");


HttpResponseMessage response = await client.PostAsync($"api/users/{user.Id}/users/PostGasStationUsers/{ConfigurationManager.AppSettings["appId"].ToString()}", content);

我需要使用其他數據類型而不是可以映射到IFormFile數據的字節數組以及如何做到這一點。

Answer 1

使用MultipartFormDataContent傳輸二進制數據

var content = new MultipartFormDataContent();

for (int i = 0; i < registrationList.Count; i++)
{
    UserForRegisterDto registration = registrationList[i];

    content.Add(new StringContent(registration.LastName), $"model[{i}].LastName");
    content.Add(new StringContent(registration.MobilePhone), $"model[{i}].MobilePhone");
    content.Add(new StringContent(registration.Name), $"model[{i}].Name");
    content.Add(new StringContent(registration.Password), $"model[{i}].Password");
    content.Add(new StringContent(registration.PhoneNumber), $"model[{i}].PhoneNumber");
    content.Add(new StringContent(registration.UserName), $"model[{i}].UserName");
    content.Add(new ByteArrayContent(registration.Photo), $"model[{i}].Photo", "photo.jpeg");
}

HttpResponseMessage response = await client.PostAsync($"api/users/{user.Id}/users/PostGasStationUsers/{ConfigurationManager.AppSettings["appId"].ToString()}", content);

如果動作參數名稱為model

[HttpPost]
public IActionResult PostGasStationUsers(List<UserForRegisterDto> model)