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我試圖執行一個存儲過程插入使用實體框架的記錄。我已經瀏覽了各種相關主題的多個教程,並且介紹瞭如何實現這一目標。現在通過fiddler獲取錯誤(ArgumentNullReferenceException
),同時使用Web API。Web API和實體框架插入存儲過程ArgumentNullReference異常
這是我的代碼:
存儲過程:
ALTER PROCEDURE [dbo].[spInsUsers]
(@user_name nvarchar(50),
@first_name nvarchar(50),
@last_name nvarchar(50),
@mobile_no varchar(10),
@email nvarchar(50),
@user_pic varchar(256),
@strowner int,
@dbtstamp datetime2)
AS
SET NOCOUNT OFF;
INSERT INTO [tbl_users] ([user_name], [first_name], [last_name], [mobile_no], [email], [user_pic], [strowner], [dbtstamp])
VALUES (@user_name, @first_name, @last_name, @mobile_no, @email, @user_pic, @strowner, @dbtstamp);
SELECT
user_id, user_name, first_name, last_name, mobile_no, email,
user_pic, strowner, dbtstamp
FROM
tbl_users
WHERE
(user_id = SCOPE_IDENTITY())
存儲過程映射:
用戶控制器:
public class UserDetails
{
public string user_name { get; set; }
public string first_name { get; set; }
public string last_name { get; set; }
public string mobile_no { get; set; }
public string email { get; set; }
public string user_pic { get; set; }
public int strowner { get; set; }
public DateTime dbtstamp { get; set; }
}
[Authorize]
[Route("AddUser")]
public HttpResponseMessage PostUsers([FromBody] tbl_users Users)
{
using(UsersEntities uent = new UsersEntities())
{
uent.tbl_users.Add(Users);
uent.SaveChanges();
var message = Request.CreateResponse(HttpStatusCode.Created, Users);
message.Headers.Location = new Uri(Request.RequestUri +
Users.user_id.ToString());
return message;
}
}
錯誤:
可能重複[什麼是NullReferenceException,以及如何解決它?](https://stackoverflow.com/questions/4660142/what-is-a-nullreferenceexception-and-how-doi-i-fix -它) – TheGameiswar