浅谈MVC+EF easyui dataGrid 动态加载分页表格

<script type="text/javascript">  $(function () {    LoadGrid();  })  //加载表格！！！  function LoadGrid() {    $('#roleGrid').datagrid({      width: 900,      striped: true,  //交替条纹      fitColumns: true,  //防止水平滚动      fit: true,//自动补全       iconCls: "icon-save",//图标       idField: 'RoleId', //唯一列      url: "GetRoles",      dataType: "json",      singleSelect: true, //设置为true将只允许选择一行      loadMsg: '正在拼命加载,请稍后...',      rownumbers: false,  //显示行数      pagination: true, //底部分页工具栏       nowrap: true,  //截取超出部分的数据      checkOnSelect: true,//点击一行的时候 checkbox checked(选择)/unchecked(取消选择)      pageNumber: 1,//初始化分页码。      pageSize: 10, //初始化每页记录数。      pageList: [5, 10, 30],  //初始化每页记录数列表      showFooter: false, //定义是否显示行底      columns: [[     { field: "RoleId", title: "角色编号", width: 60, align: "center", sortable: "true" },     { field: "RoleName", title: "角色名称", width: 100, align: "center" },     { field: "RoleRemarks", title: "备注", width: 100, align: "center" },     {       field: "IsStatus", title: "状态", width: 60, align: "center", formatter: function (value, row, index) {         if (value == "0") {           return "正常";         } else if (value == "1") {           return "停用";         }       }     },     {       field: "edit", title: "操作", align: "center", width: 80, formatter: function (value, row, index) {         var detail = '<a style="padding:1px;color:black;" onclick="editRole(' + index + ')"><i class="fa fa-edit"></i>编辑</a>';         var deleteBtn = '<a style="color:black;" onclick="delRole(' + index + ')"><i class="fa fa-trash-o"></i>删除</>';         var setrole = '<a style="color:black;" onclick="setRights(' + index + ')"><i class="fa fa-exclamation-triangle"></i>设置权限</>';         return "  " + detail + " | " + deleteBtn + " | " + setrole;       }     }      ]] //列    });  };  function editRole(i) { //编辑按钮的方法    var rows = $("#roleGrid").datagrid("getRows");    layer.open({      title: false,      type: 2,      closeBtn: false,      area: ['420px', '418px'],      skin: 'layui-layer-rim', //加上边框      content: ['/Admin/ShowForm/EidtRole', 'no'],      success: function (layero, index) {        var body = layer.getChildFrame('body', index);        body.contents().find("#roleId").val(rows[i].RoleId);        body.contents().find("#roleName").val(rows[i].RoleName);        if (rows[i].RoleRemarks != "-") {          body.contents().find("#remarks").val(rows[i].RoleRemarks);        }        body.contents().find("#isstutas").val(rows[i].IsStatus);      }    });  }  function delRole(i) { //删除用户    var rows = $("#roleGrid").datagrid("getRows");    var postData = {      roleId: rows[i].RoleId    };    layer.confirm('确认删除该角色？', {      btn: ['确认', '取消'], //按钮      shade: false //不显示遮罩    }, function (index) {      $.ajax({        type: "POST",        url: "DeleRole",        data: postData,        success: function (result) {          if (result == "true") {            layer.msg("操作成功！", {              icon: 6,              time: 1000,            }, function () {              $("#roleGrid").datagrid("reload");              layer.close(index);            });          } else if (result == "false") {            layer.msg("操作失败！", { icon: 2 });          } else if (result == "msg") {            layer.msg("系统错误,请联系管理员！", { icon: 0 });          }        }      });    }, function (index) {      layer.close(index);    });  }

/// <summary>    /// 动态生成表格的数据    /// </summary>    /// <param name="page"></param>    /// <param name="rows"></param>    /// <returns></returns>    public JsonResult GetRoles(int? page, int? rows)    {      page = page == null ? 1 : page; //第几页      rows = rows == null ? 1 : rows; //行数      List<role> rList = rService.GetAllRoles(Convert.ToInt32(page), Convert.ToInt32(rows));      List<role> roleList = new List<role>();      for (int i = 0; i < rList.Count; i++)      {        role r = new role();        r.RoleId = rList[i].RoleId;        r.RoleName = rList[i].RoleName;        if (string.IsNullOrEmpty(rList[i].RoleRemarks))        {          r.RoleRemarks = "-";        }        else        {          r.RoleRemarks = rList[i].RoleRemarks;        }        r.IsStatus = rList[i].IsStatus;        roleList.Add(r);      }      var json = new      {        total = rService.GetTotal(),        rows = roleList      };      return Json(json, JsonRequestBehavior.AllowGet);    }

/// <summary>    /// 分页的数据    /// </summary>    /// <param name="page"></param>    /// <param name="rows"></param>    /// <returns></returns>    public List<role> GetAllRoles(int page, int rows)    {      using (diamondEntities entity = new diamondEntities())      {        IQueryable<role> role = entity.roles.OrderBy(a => a.RoleId).Skip((page - 1) * rows).Take(rows);        List<role> roleList = role.ToList<role>();        if (roleList.Count > 0)        {          return roleList;        }        else        {          return null;        }      }    }    /// <summary>    /// 获取总页数    /// </summary>    /// <returns></returns>    public int GetTotal()    {      using (diamondEntities entity = new diamondEntities())      {        IQueryable<role> user = entity.roles.Select(m => m);        List<role> userList = user.ToList();        return userList.Count;      }    }