c# - 系统.Data.SqlClient.SqlException : Column name or number of supplied values does not match table definition

Question

我希望用户输入显示的所有数据(数据库中的列)，填写并提交。我无法使用 HTML.HiddenFor 元素自动生成 Id 和 CompanyID。

System.Data.SqlClient.SqlException: Column name or number of supplied values does not match table definition..

型号:

namespace Project.Models
{
    public class Contact
    {
        public int Id { get; set; }
        public string FirstName { get; set; }
        public string LastName { get; set; }
        public string Email { get; set; }
        public int Phone { get; set; }
        public int CompanyID { get; set; }
    }
}

查看:

@model Project.Contact

<h2>Create Contact</h2>

@using (Html.BeginForm("Create", "Home", FormMethod.Post))
{
    <table>
        <tr>
            <th>First name</th>
            <th>Last name</th>
            <th>Email</th>
            <th>Phone</th>
        </tr>
        <tr>
            <td>@Html.HiddenFor(m => m.Id)</td>
            <td></td>
            <td>@Html.TextBoxFor(m => m.FirstName)</td>
            <td>@Html.TextBoxFor(m => m.LastName)</td>
            <td>@Html.TextBoxFor(m => m.Email)</td>
            <td>@Html.TextBoxFor(m => m.Phone)</td>
            <td>@Html.HiddenFor(m => m.CompanyID)</td>
        </tr>

    </table>
    <br />
    <input type="submit" name="btn" class="btn-primary" value="Create" />
}

Controller :

using Arbetsprov_Sublime___Andre_Kordasti.Models;
using System.Collections.Generic;
using System.Data.SqlClient;
using System.Web.Mvc;

namespace Arbetsprov_Sublime___Andre_Kordasti.Controllers
{
    public class HomeController : Controller
    {
        public ActionResult Index()
        {
            return View();
        }

        [HttpGet]
        public ActionResult Create()
        {
            return View();
        }

        [HttpPost]
        public ActionResult Create(Contact model)
        {
            var connection = new SqlConnection(@"Data Source=.\SQLExpress;Initial Catalog=Sublime;Integrated Security=True");
            connection.Open();

            var command = new SqlCommand("INSERT INTO Contact Values('" + model.Id + "','" + model.FirstName + " " + model.LastName + "','" + model.Email + " " + model.Phone + "','" + model.CompanyID + "')", connection);
            command.ExecuteNonQuery();

            return View();
        }
    }
}

Answer 1

var command = new SqlCommand("INSERT INTO Contact(Id,FirstName,LastName,Email,Phone,CompanyId) Values('" + model.Id + "','" + model.FirstName + " " + model.LastName + "','" + model.Email + " " + model.Phone + "','" + model.CompanyID + "')", connection);
command.ExecuteNonQuery();

如果有一列必须自动生成，你必须告诉你为哪一列提供的值，以便 sql 知道没有提到的属性应该自动生成