如何在ASP.Net MVC(C#)中调用和执行存储过程

Question

美好的一天,我在这里有点冷静.我使用ASP.NET MVC和C#在visual studio中创建了我的数据库,模型,控制器和视图,但我无法弄清楚如何调用我创建的存储过程.

我希望在我放在视图中的按钮上调用存储过程.单击按钮时,此存储过程应执行并显示结果.下面是我创建的存储过程,视图,模型和控制器.

这是我的"员工"模型:

using System;
using System.Collections.Generic;
using System.ComponentModel.DataAnnotations;
using System.ComponentModel.DataAnnotations.Schema;
using System.Linq;
using System.Web;

namespace MVCSimpleApp.Models
{
    [Table("Employees")]
    public class Employee
    {
        [Display(Name ="Employee Id")]
        public int EmployeeId { get; set; }
        [Display(Name ="First Name")]
        public string FirstName { get; set; }
        [Display(Name ="Last Name")]
        public string LastName { get; set; }
    }
}

这是我的数据上下文:

using System;
using System.Collections.Generic;
using System.Data.Entity;
using System.Linq;
using System.Web;

namespace MVCSimpleApp.Models
{
    public class EmployeeContext : DbContext
    {
        public DbSet<Employee> Employee { get; set; }
    }
}

这是我的员工控制员:

using MVCSimpleApp.Models;
using System;
using System.Collections.Generic;
using System.Data.Entity;
using System.Linq;
using System.Net;
using System.Web;
using System.Web.Mvc;

namespace MVCSimpleApp.Controllers
{
    public class EmployeeController : Controller
    {
        private EmployeeContext db = new EmployeeContext();
        // GET: Employee
        public ActionResult Index()
        {

            var employees = from e in db.Employee select e;
            return View(employees);
        }
    }
 }

现在这是我的存储过程.它并不多,只是出于实践目的.

Create Proc DisplayStudents
AS
BEGIN
     /*selecting all records from the table whose name is "Employee"*/
    Select * From Employee
END

这是我的看法:

@model IEnumerable<MVCSimpleApp.Models.Employee>

@{
    ViewBag.Title = "Index";
    Layout = "~/Views/Shared/_Layout.cshtml";
 }

 <h2>Student List</h2>

 <p>
    <a href="@Url.Action("Create")" title="Add new" class="btn btn-primary btn-lg">
        <span class="glyphicon glyphicon-plus "></span>
        Add Student
    </a>


</p>
<table class="table">
    <tr>
        <th>
            @Html.DisplayNameFor(model => model.EmployeeId)
        </th>
        <th>
            @Html.DisplayNameFor(model => model.FirstName)
        </th>
        <th>
            @Html.DisplayNameFor(model => model.LastName)
        </th>
        <th></th>
    </tr>

 @foreach (var item in Model) {
 <tr>
    <td>
        @Html.DisplayFor(model => item.EmployeeId)
    </td>
    <td>
        @Html.DisplayFor(modelItem => item.FirstName)
    </td>
    <td>
        @Html.DisplayFor(modelItem => item.LastName)
    </td>
    <td>
        <span>
            <a href="@Url.Action("Edit", new { id = item.EmployeeId})" title="Edit Record">
                <span class="glyphicon glyphicon-pencil"></span>
            </a>
        </span>
        |
        <span>
            <a href="@Url.Action("Details", new { id = item.EmployeeId})" title="View Details">
                <span class="glyphicon glyphicon-th-list"></span>
            </a>
        </span>
        |
        <span>
            <a href="@Url.Action("Delete", new { id = item.EmployeeId})" title="Delete">
                <span class="glyphicon glyphicon-trash"></span>
            </a>
        </span>
    </td>
</tr>
}
  /*this is the button I want the stored procedure to be called on when I click it*/
  <button>Run</button>
</table>

请大家,我需要您就此事提出意见和反馈.将接受将参数传递给存储过程的提示.如果我不在这里做事,请纠正我.感谢你的关心.

Answer 1

如果使用EF不是必需品,您可以通过以下方式进行:

string cnnString = System.Configuration.ConfigurationManager.ConnectionStrings["ConnectionStringName"].ConnectionString;

SqlConnection cnn = new SqlConnection(cnnString);
SqlCommand cmd = new SqlCommand();
cmd.Connection = cnn;
cmd.CommandType = System.Data.CommandType.StoredProcedure;
cmd.CommandText = "ProcedureName";
//add any parameters the stored procedure might require
cnn.Open();
object o = cmd.ExecuteScalar();
cnn.Close();

如果您需要使用Entity Framework,请查看此讨论.您还想使用存储过程进行插入,更新和删除,请查看Microsoft的本教程.

要从按钮单击执行代码,您可以在表单中创建一个表单,只需一个按钮,如下所示:

@using(Html.BeginForm("TestAction", "TestController", FormMethod.Get))
{
    <input type="submit" value="Submit" />
}

在您的控制器中,您将拥有这样的TestAction方法

public ActionResult TestAction(){....}

如果需要将任何参数传递给TestAction,只需将它们指定为方法中的参数,然后使用接受actionName,controllerName,routeValues和formMethod作为参数的重载版本的BeginForm.

要将结果传递给视图,您需要根据从存储过程中接收的值创建具有属性的视图模型,然后从TestAction方法返回包含视图模型的视图.