dojo学习小结-dojox.grid.DataGrid

dojo学习总结-dojox.grid.DataGrid
dojo学习总结-dojox.grid.DataGrid

一、使用场景

   服务端获得的DataTable转化为Json格式后传递给客户端dojo,dojo将json数据直接绑定在dojox.grid.DataGrid上

二、基本用法

1.客户端页面DataToJson.aspx返回一个Json数据

    private void Json()
    {
        DataTable dt = this.GetData();
        string str = JsonHelper.DateTableToJson(dt);
        Response.Write(str);
        Response.End();
    }

2.利用ajax接受json数据

dojox.grid.DataGrid凭借dojo.data.ItemFileWriteStore可以轻松具有ajax功能

使用dojo.grid.DataGrid首先做如下准备工作

a.引入样式表
<link rel="Stylesheet" href="dojo-re/dojox/grid/resources/soriaGrid.css" />
b.引入所需库
dojo.require("dojo.parser");
dojo.require("dijit.form.Button");
dojo.require("dojox.grid.DataGrid");

dojo.require("dojo.data.ItemFileWriteStore");
dojo.require("dojox.layout.FloatingPane");
c.编写代码

<script type="text/javascript">
        function Grid1() {
            var data = new dojo.data.ItemFileWriteStore({
                url: "DataToJson.aspx"
            });
            var structure = [
                { name: "用户名", field: "userName", width: "120px" },
                { name: "密码", field: "userPwd", width: "120px" },
                { name: "电子邮件", field: "email", width: "150px;" },
                { name: "博客", field: "blog", width: "150px" },
                { name: "生日", field: "birthday", width: "120px" },
                { name: "年龄", field: "age", width: "80px" },
                { name: "备注", field: "description", width: "120px" }
            ];
            var grid = new dojox.grid.DataGrid({
            store: data,
            structure:structure
            },"grid1");
            grid.startup();
        }
        function ShowFloatingPane() {
            var floatingPane = dijit.byId("dFloatingPane");
            floatingPane.show();
            Grid1();
        }
    </script>


所需HTML

   <div >
        <div data-dojo-type="dojox.layout.FloatingPane" id="dFloatingPane"
           title="A floating pane" data-dojo-props="resizable:true, dockable:true, title:'A floating pane'"
           style="position:absolute;top:150px;left:400px;width:600px;height:400px; visibility:hidden">
             <div id="grid1" style="width:450px; height:350px"></div>
        </div>
    </div>
<div data-dojo-type="dijit.form.Button" data-dojo-props="label:'Show me', onClick:ShowFloatingPane"></div>


三、继续完善DataGrid功能

1,增加搜索条件
query:{userName:"evilyang",id:"*"},

2,隐藏一列，不显示

{name:"密码",field:"userPwd",width:"100px",hidden:"true"}

3,为某一列增加一个样式名
<style type="text/css">
    .name{ font-style:italic; font-size:14px; color:Red;}
    </style>
{ name: "用户名", field: "userName", width: "120px" ,classes:"name"}
4，为某一列直接增加一个样式
{ name: "电子邮件", field: "email", width: "150px;",styles:"text-align:center;" },
5,固定前两列

更改structure结构，加入noscroll属性

var structure = [{
                noscroll: true,
                cells: [
                { name: "用户名", field: "userName", width: "80px", classes: "name" },
                { name: "密码", field: "userPwd", width: "80px", hidden: "true" },
                { name: "电子邮件", field: "email", width: "150px;", styles: "text-align:center;" }   
                ]
            }, {
                cells: [
                { name: "博客", field: "blog", width: "120px" },
                { name: "生日", field: "birthday", width: "120px" },
                { name: "年龄", field: "age", width: "50px" },
                { name: "备注", field: "description", width: "120px" }
                ]
            }];

6,cell中的样式设置默认模式
defaultCell:{width:"80px",styles:"text-align:center;"},
这样设置完后，每一列的属性就不必单独设置了

7， 其他属性
selectionMode: "extended", //none,single,multiple
loadingMessage: "请等待，数据正在加载中......",
errorMessage: "对不起，你的请求发生错误!",
columnReordering:true//此属性设置为true,可以拖拽标题栏，更换列顺序

new dojox.grid.cells.RowIndex({ name: "编号", width: "20px" })//加入自编号

四、数据显示高级功能

1, RowClick事件

grid.on("RowClick", function(evt) {
                var idx = evt.rowIndex,
                    item = this.getItem(idx),
                    store = this.store;
                    content = dojo.byId("content");
                    content.innerHTML="you have clicked on rows " + store.getValue(item, "id");
　　　　　　　　　　}, true);


2,SelectionChanged事件

grid.on("SelectionChanged",dojo.hitch(grid, reportSelection), true);
function reportSelection() {
            var items = this.selection.getSelected(),
                        msg = "你选择了以下数据";
            var tmp = dojo.map(items, function(item) {
                return this.store.getValue(item, "id");
            }, this);
            var content = dojo.byId("content");
            content.innerHTML = msg + tmp.join(",");
          
        }