ASP .NET MVC 查询数据的进度条

1、在Visual Studio中的ASP.NET MVC Web应用程序中创建应用程序

 

转到文件菜单>新建>项目

 

选择ASP.NET Web应用程序（.NET Framework）并更改应用程序名称：例如，ProgressWebsite，然后单击“确定”。

 

选择“ MVC”>“现在”，将使用默认的ASP.NET MVC模板创建MVC Web应用程序项目。

2、新建一个Model ————> EMPLOYEE

    public class EMPLOYEE
    {
        public int Id { get; set; }
        public string Name { get; set; }
        public string FatherName { get; set; }
        public string Gender { get; set; }
        public string Address { get; set; }
        public string Phone { get; set; }
        public string MobileNo { get; set; }
    }

3、创建一个实体类EmployeeContext

    public class EmployeeContext : DbContext
    {

        public EmployeeContext() : base("EmployeeContext")
        {
        }

        public DbSet<EMPLOYEE> EMPLOYEE { get; set; }

        protected override void OnModelCreating(DbModelBuilder modelBuilder)
        {
            modelBuilder.Conventions.Remove<PluralizingTableNameConvention>();
        }
    }

注意要在Web.config里面加ConnectionStrings节点

<connectionStrings>
    <add name="EmployeeContext" connectionString="Data Source=IT-112;Initial Catalog=wgz;Integrated Security=True" providerName="System.Data.SqlClient" />
  </connectionStrings>

4、创建一个控制器ProgressController

public class ProgressController : Controller
    {
        // GET: Progress
        public ActionResult Index()
        {
            return View();
        }

        EmployeeContext db =new EmployeeContext();

        public ActionResult Emp_Display()
        {
            var rec = db.EMPLOYEE.ToList();
            return View(rec);
        }

        [HttpPost]
        [System.Web.Services.WebMethod]
        public JsonResult GetText()
        {
            EmployeeContext db = new EmployeeContext();
            var rec = db.EMPLOYEE.ToList();
            var serializer = new JavaScriptSerializer()
            {
                MaxJsonLength = Int32.MaxValue
            };
            // Perform your serialization  
            serializer.Serialize(rec);
            return Json(rec, JsonRequestBehavior.AllowGet);
        }
    }

5、创建视图Emp_Display

@model IEnumerable<ProgressBar.Models.EMPLOYEE>

<script src="https://lib.sinaapp.com/js/jquery/2.2.4/jquery-2.2.4.min.js"></script>
<h3>进度条</h3>
<div class="progress">
    <div class="progress-bar progress-bar-success progress-bar-striped active" role="progressbar" aria-valuenow="" aria-valuemin="0" aria-valuemax="100" id="lblStatus">
    </div>
</div>
<h3 id="h3"></h3>
<table class="table">
    <tr>
        <th>
            @Html.DisplayNameFor(model => model.Name)
        </th>
        <th>
            @Html.DisplayNameFor(model => model.FatherName)
        </th>
        <th>
            @Html.DisplayNameFor(model => model.Gender)
        </th>
        <th>
            @Html.DisplayNameFor(model => model.Address)
        </th>
        <th>
            @Html.DisplayNameFor(model => model.Phone)
        </th>
        <th>
            @Html.DisplayNameFor(model => model.MobileNo)
        </th>
    </tr>

    <tbody class="tbody" id="tbody"></tbody>
    
</table>
    <tbody id="test">1111</tbody>
<p>dsadasdsdasd</p>
<p id="myh1"></p>
<p id="myp1"></p>
<script>
    
   $(document).ready(function () {
        var count = 0;
        var html = '';
        
        $(".progress-bar").attr("aria-valuenow", "0");
        $.ajax({
            type: "POST",
            url: "../Progress/GetText",
            data: "{}",
            contentType: "application/json; charset=utf-8",
            dataType: "json",
            async: false,
            success: function (result) {
                $.each(result, function (key, item) {
                    $('.table').hide();
                    html += '<tr>';
                    html += '<td>' + item.Name + '</td>';
                    html += '<td>' + item.FatherName + '</td>';
                    html += '<td>' + item.Gender + '</td>';
                    html += '<td>' + item.Address + '</td>';
                    html += '<td>' + item.Phone + '</td>';
                    html += '<td>' + item.MobileNo + '</td>';
                    html += '</tr>';
                    var myVar = setTimeout(updateProgress,10, ++count, result.length, html);
                    html = "";
                });
                $('.table').show();
            },
            error: function (errormessage) {
                $("#h3").text(errormessage.responseText);
                return false;
            }
        });
        var count = 1;

        function updateProgress(count, max, html) {
            $("#h3").text(count + " Records loaded successfully");
            if (count <= max) {
                count1 = parseInt(count / (max / 100));
                var lblStatus = document.getElementById("lblStatus");
                lblStatus.style.width = count1 + "%";
                $("#lblStatus").text(count1 + '% Complete');
                $("#tbody").append(html);
                
            }
        }
    }); 
</script>

Ps:1、要记得往数据库内插入数据，但是数据太多的话就会出现”使用 JSON JavaScriptSerializer 进行序列化或反序列化时出错。字符串的长度超过了为 maxJsonLength 属性设置的值。“，所以数据量10000条先看看效果吧；

2、用的google得js连接不上，所以换成了新浪的；

3、效果图如下

 

 原文连接：https://www.c-sharpcorner.com/article/progress-bar-in-asp-net-mvc/