Asp.net mvc +Ajax +Extjs+NHibernate 系列之MVC

概述

Asp.net mvc 是微软的开源项目，http://www.asp.net/mvc此处有开源地址，大家可以去下载源代码。不用去想，MVC即，model，view，controller。而微软提供的框架，使我们不用关心框架本身，而只需要去实现自己的部分，去构建属于自己的网站即可。

详解

Model层，所有项目中所有实体在该层表示，例如数据库中的对象等。前面提到的SystemConfigMVCDemo.Entity层中的实体便可以使用。

简短实现代码：

 [Serializable]
    public class SystemConfig : BaseObject<decimal>
    {
        #region 成员

        private string _FieldName;
        private string _FieldValue;
        private int _FieldGroup;
        private string _Creator;
        private DateTime? _CreateDT;
        private string _Updator;
        private DateTime? _UpdateDT;

        #endregion

        #region 构造函数

        public SystemConfig()
        { }

        public SystemConfig(string FieldName, string FieldValue, int FieldGroup, string Creator, DateTime CreateDT, string Updator, DateTime UpdateDT)
        {
            this._FieldName = FieldName;
            this._FieldValue = FieldValue;
            this._FieldGroup = FieldGroup;
            this._Creator = Creator;
            this._CreateDT = CreateDT;
            this._Updator = Updator;
            this._UpdateDT = UpdateDT;
        }

        #endregion

        #region 属性

        /// <summary>
        /// 获取与设置字段名称
        /// </summary>
        public virtual string FieldName
        {
            get { return _FieldName; }
            set { _FieldName = value; }
        }
        #endregion
    }

 View 层，即*.aspx ,网页，你在设计是，只关注把页面样式调整好，是属于客户端显示的部分。所能看得到的部分。

简短代码如下：

<%@ Page Title="" Language="C#" MasterPageFile="~/Views/Shared/Site.Master" Inherits="System.Web.Mvc.ViewPage<IEnumerable<SystemConfigMVCDemo.Entity.SystemConfig>>" %>

<asp:Content ID="Content1" ContentPlaceHolderID="TitleContent" runat="server">
</asp:Content>
<asp:Content ID="Content2" ContentPlaceHolderID="MainContent" runat="server">
    <h2>
        列表</h2>
    <link href="http://www.cnblogs.com/ext/resources/css/ext-all.css" rel="stylesheet" type="text/css" />

    <script src="http://www.cnblogs.com/ext/adapter/ext/ext-base.js" type="text/javascript"></script>
    <script src="http://www.cnblogs.com/ext/ext-all.js" type="text/javascript"></script>

    <script src="http://www.cnblogs.com/Content/SystemConfig/SystemConfigAjax.js" type="text/javascript"></script>

    <script src="http://www.cnblogs.com/Content/SystemConfig/AjaxFrame.js" type="text/javascript"></script>

    <script src="http://www.cnblogs.com/Content/SystemConfig/SystemConfigForm.js" type="text/javascript"></script>
    <table>
        <tr>
            <th>
            </th>
            <th>
                FieldName
            </th>
            <th>
                FieldValue
            </th>
            <th>
                FieldGroup
            </th>
            <th>
                Creator
            </th>
            <th>
                CreateDT
            </th>
            <th>
                Updator
            </th>
            <th>
                UpdateDT
            </th>
            <th>
                PkId
            </th>
            <th>
                IsChanged
            </th>
            <th>
                IsDeleted
            </th>
        </tr>
        <% foreach (var item in Model)
           { %>
        <tr ondblclick="ShowForm(<%=item.PkId %>)">
            <td>
                <%= Html.ActionLink("Edit", "Edit", new { id = item.PkId,flag = "Edit" })%>|
                <%= Html.ActionLink("Details", "Details", new { id = item.PkId })%>|
                <%= Html.ActionLink("Delete", "Delete", new { id=item.PkId})%>
            </td>
            <td>
                <%= Html.Encode(item.FieldName) %>
            </td>
            <td>
                <%= Html.Encode(item.FieldValue) %>
            </td>
            <td>
                <%= Html.Encode(item.FieldGroup) %>
            </td>
            <td>
                <%= Html.Encode(item.Creator) %>
            </td>
            <td>
                <%= Html.Encode(String.Format("{0:g}", item.CreateDT)) %>
            </td>
            <td>
                <%= Html.Encode(item.Updator) %>
            </td>
            <td>
                <%= Html.Encode(String.Format("{0:g}", item.UpdateDT)) %>
            </td>
            <td>
                <%= Html.Encode(String.Format("{0:F0}", item.PkId)) %>
            </td>
            <td>
                <%= Html.Encode(item.IsChanged) %>
            </td>
            <td>
                <%= Html.Encode(item.IsDeleted) %>
            </td>
        </tr>
        <% } %>
    </table>
            <%--<input type="button" id="show-btn" />--%>
    <div id="hello-win" class="x-hidden">
    <div id="form"></div>
<%--    <div class="x-window-header">Hello Dialog</div>
    <div id="hello-tabs">
        <!-- Auto create tab 1 -->
        <div class="x-tab" title="Hello World 1">
            <p>Hello...</p>
        </div>
        <!-- Auto create tab 2 -->
        <div class="x-tab" title="Hello World 2">
            <p>... World!</p>
        </div>
    </div>--%>
</div>
    <%
    //int PageCount = 0;
    //if (Session["PageCount"] != null)
    //{
    //    PageCount = int.Parse(Session["PageCount"].ToString());
    //}
    //int currendSessionIndex=1;
    ////if(Session["CurrendIndex"]!=null)
    ////{
    ////    currendSessionIndex = int.Parse(Session["CurrendIndex"].ToString());
    ////}
    //currendSessionIndex = int.Parse(hidCurrentIndex.Value.ToString());
     %>
     <%
         int PageCount = 0;
         if (ViewData["PageCount"] != null)
         {
             PageCount = int.Parse(ViewData["PageCount"].ToString());
         }
         int currendSessionIndex = 1;
         if (ViewData["CurrendIndex"] != null)
         {
             currendSessionIndex = int.Parse(ViewData["CurrendIndex"].ToString());
         }         
          %>
    <%= Html.ActionLink("首页", "index", new { currentIndex =1})%>   <%=Html.ActionLink("上一页", "index", new { currentIndex =currendSessionIndex,flag=0})%>   <%=Html.ActionLink("下一页", "index", new { currentIndex = currendSessionIndex, flag = 1})%>  <%=Html.ActionLink("尾页", "index", new { currentIndex=PageCount,flag=2 })%>

    <p>
        <%= Html.ActionLink("Create New", "Create") %>
    </p>
    <%--<input type="button" id="btnXML" onclick="StartXMLRequest()" />--%>
</asp:Content>

Controller

所有你自己写的controller只需继承Controller类即可。他是model与view层之间的桥梁。前一票随笔所提到的service在这里将会使用到。

简单代码：

简单代码：
 public class SystemConfigController : ControllerBase
    {
        SystemConfigService service = new SystemConfigService();
#if unitTest
        int pageSize=5;
#else 
        int pageSize = int.Parse(ConfigurationManager.AppSettings["PageSize"].ToString());
#endif
        //
        // GET: /SystemConfig/

        /// <summary>
        /// SystemConfig列表界面
        /// </summary>
        /// <param name="currentIndex">当前页</param>
        /// <param name="flag">向前还是向后</param>
        /// <returns>提交界面结果</returns>
        public ActionResult Index(int? currentIndex, int? flag)
        {
            #region Session 实现
            //int pageCount = service.GetPageCount(pageSize);
            //Session["PageCount"] = pageCount;
            //List<SystemConfig> configList = new List<SystemConfig>();
            //if (currentIndex.HasValue)
            //{
            //    if (currentIndex.Value == 1)
            //    {
            //        //第一页，session CurrendIndex置为 1
            //        if (currentIndex.Value == 1)
            //        {
            //            Session["CurrendIndex"] = 1;
            //        }
            //    }
            //}
            //if (flag.HasValue && currentIndex.HasValue)
            //{
            //    //0向前
            //    if (flag.Value == 0)
            //    {
            //        Session["CurrendIndex"] = currentIndex.Value - 1;
            //        currentIndex = currentIndex.Value - 1;
            //        configList = service.GetByPage(currentIndex.Value, pageSize);
            //    }
            //    //1向后
            //    else if (flag.Value == 1)
            //    {
            //        Session["CurrendIndex"] = currentIndex.Value + 1;
            //        currentIndex = currentIndex.Value + 1;
            //        configList = service.GetByPage(currentIndex.Value, pageSize);
            //    }
            //    //最后一页
            //    else if (flag.Value == 2)
            //    {
            //        Session["CurrendIndex"] = currentIndex.Value;
            //        currentIndex = currentIndex.Value;
            //        configList = service.GetByPage(currentIndex.Value, pageSize);
            //    }
            //    if (currentIndex.Value > pageCount)
            //    {
            //        configList = service.GetByPage(1, pageSize);
            //    }
            //}
            //else
            //{
            //    configList = service.GetByPage(1, pageSize);
            //}
            //if (configList == null)
            //{
            //    return RedirectToAction("SystemConfigNotFound");
            //}
            //else
            //    return View("Index", configList);
            #endregion

            #region ViewData实现
            int pageCount = service.GetPageCount(pageSize);
            ViewData["PageCount"] = pageCount;
            List<SystemConfig> configList = new List<SystemConfig>();
            if (Request.QueryString["currentIndex"]!=null)
               currentIndex = int.Parse(Request.QueryString["currentIndex"].ToString());
            if (Request.QueryString["flag"] != null)
                flag = int.Parse(Request.QueryString["flag"].ToString());
            if (currentIndex.HasValue)
            {
                if (currentIndex.Value == 1)
                {
                    //第一页，session CurrendIndex置为 1
                    if (currentIndex.Value == 1)
                    {
                        ViewData["CurrendIndex"] = 1;
                    }
                }
            }
            if (flag.HasValue && currentIndex.HasValue)
            {
                //0向前
                if (flag.Value == 0)
                {
                    ViewData["CurrendIndex"] = currentIndex.Value - 1;
                    currentIndex = currentIndex.Value - 1;
                    if (currentIndex.Value == 0)
                    {
                        configList = service.GetByPage(1, pageSize);
                        ViewData["CurrendIndex"] = 1;
                    }
                    else
                        configList = service.GetByPage(currentIndex.Value, pageSize);
                }
                //1向后
                else if (flag.Value == 1)
                {
                    ViewData["CurrendIndex"] = currentIndex.Value + 1;
                    currentIndex = currentIndex.Value + 1;
                    if (currentIndex.Value >= pageCount)
                    {
                        configList = service.GetByPage(pageCount, pageSize);
                        ViewData["CurrendIndex"] = pageCount;
                    }
                    else
                     configList = service.GetByPage(currentIndex.Value, pageSize);
                }
                //最后一页
                else if (flag.Value == 2)
                {
                    ViewData["CurrendIndex"] = currentIndex.Value;
                    currentIndex = currentIndex.Value;
                    configList = service.GetByPage(currentIndex.Value, pageSize);
                }
            }
            else
            {
                configList = service.GetByPage(1, pageSize);
            }
            if (configList == null)
            {
                return RedirectToAction("SystemConfigNotFound");
            }
            else
                return View("Index", configList);
            #endregion
        }

        /// <summary>
        /// 获取总页码
        /// </summary>
        /// <returns>页大小</returns>
        public int GetPageCount()
        {
            return service.GetPageCount(pageSize);
        }
    }

实现要点

所有这些，只需在新建项目时选择asp.netmvc 项目即可，然后在添加自己的controller和view，model等。注意的时，在为controller添加view时，只需右键，创建视图即可。

总结

做为微软难得的开源项目，应该拿代码来看看。自己研究研究。