EXTJS学习系列提高篇:第三篇(转载)作者殷良胜,在GridPanel上单击右键显示菜单的制作
简单介绍:
本示例主要用EXT2.2+vs.2008.net+C#+sql Server 2005实现在GridPanel上单击右键显示菜单,在单击某个菜单项后弹出一个窗口用于处理具体的操作
功能:
1,生成GridPanel
2,在GridPanel上单击右键显示菜单
3,实现分页
环境:
1,EXT2.2版本
2,vs.net2008+C#
3,sql Server 2005
说明:项目所需要的具体文件以及后台文件都可以在前面的2个例子中下载
对行数据的编辑没有具体实现,仅仅是展示如何单击右键显示菜单并且弹出相应的窗口,没有对具体的数据后台处理
截图:
1,在某行上点击右键,出现下图所示的菜单
2,在菜单上点某个菜单项后出现下图所示的窗口
Code
下面是源代码1,页面文件:Default.aspx<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="GridPanel_Default" %><!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head runat="server"> <title>无标题页</title> <link rel="stylesheet" type="text/css" href="resources/css/ext-all.css"/> <script type="text/javascript" src="ExtBase/ext-base.js"></script> <script type="text/javascript" src="ExtBase/ext-all.js"></script> <script type="text/javascript" src="ExtBase/ext-lang-zh_CN.js"></script></head><body> <form id="form1" runat="server"> <div> <div id="panel_id"></div> <script type="text/javascript"> var grid; function DataGrid() 
{ 
var cm = new Ext.grid.ColumnModel ([
{header: "编号", width: 120, dataIndex: 'ID', sortable: true}, {header: "标题", width: 180, dataIndex: 'Title', sortable: true}, {header: "作者", width: 115, dataIndex: 'Author', sortable: true}, {header: "来源", width: 100, dataIndex: 'Source', sortable: true}, {header: "日期", width: 100, dataIndex: 'PostDate', sortable: true} ]); var titleInfo = "编辑数据"; var fields = [{name:"ID"},{name:"Title"},{name:"Author"},{name:"Source"},{name:"PostDate"}]; var newStore = new Ext.data.Store ({ proxy:new Ext.data.HttpProxy({url:"JsonData.aspx?param=initData"}), reader:new Ext.data.JsonReader({totalProperty:"totalPorperty",root:"result",fields:fields})
}); newStore.load({params:{start:0,limit:16}}); var pagingBar = new Ext.PagingToolbar ({ displayInfo:true, emptyMsg:"没有数据显示", displayMsg:"显示从{0}条数据到{1}条数据，共{2}条数据", store:newStore, pageSize:16 }); this.gridPanel = new Ext.grid.GridPanel ({ cm:cm, id:"grid_panel", title:titleInfo, store:newStore, frame:false, border:true, layout:"fit", pageSize:16, autoWidth:true, height:400, clicksToEdit:1, viewConfig:{forceFit:true}, bbar:pagingBar }); this.gridPanel.on("rowcontextmenu",open_rowcontextmenu);
} function open_rowcontextmenu(grid,rowIndex,e) { e.preventDefault(); var menus = new Ext.menu.Menu ([ { xtype:"button",text:"编辑",pressed:true,icon:"imgMenus/3.png", handler:function(){Edit(grid,rowIndex,e ,"编辑");} }, { xtype:"button",text:"删除",pressed:true,icon:"imgMenus/3.png", handler:function(){Edit(grid,rowIndex,e ,"删除");} } ]); menus.showAt(e.getPoint()); } function Edit(grid,rowIndex,e,titleInfo) { var record = grid.getStore().getAt(rowIndex); var currID = record.data.ID; var currAuthor = record.data.Author; var currTitle = record.data.Title; var currSource = record.data.Source; var currPostDate = record.data.PostDate; var p = new Ext.FormPanel ({ frame:true,labelWidth:36, items: [ {xtype:"hidden",id:"ID",width:201,value:currID}, {xtype:"textfield",fieldLabel:"标题",id:"Title",width:201,value:currTitle}, {xtype:"textfield",fieldLabel:"作者",id:"Author",width:200,value:currAuthor}, {xtype:"textfield",fieldLabel:"来源",id:"Source",width:201,value:currSource}, {xtype:"datefield",fieldLabel:"日期",id:"PostDate",width:201,value:currPostDate,format:"Y年m月d日"} ] }); var win = new Ext.Window ({ title:titleInfo+"窗口",autoHeight:true,width:300,resizable:false,buttonAlign:"center", modal:true,//height:300, items:[p], bbar: [ {xtype:"button",text:"确定"+titleInfo,handler:function(){Edit_Sub(win,titleInfo);}}, '','', {xtype:"button",text:"关闭",handler:function(){win.destroy();}} ] }); win.show(); } function Edit_Sub(winParam,titleInfo) { var currID = Ext.getCmp("ID").getValue(); winParam.destroy(); if(titleInfo=="删除") { Ext.Msg.alert("消息提示","删除成功"); //具体删除代码自己实现 } else { Ext.Msg.alert("消息提示","编辑成功"); //具体修改代码自己实现 } } function MakePanel(obj) { this.panel_def = new Ext.Panel ({ layout:"fit", border:true, frame:true, title:"数据浏览", autoWidth:true, height:500, id:"Viewport_ID", renderTo:"panel_id", items:[obj.gridPanel] }); } function loader() { Ext.QuickTips.init(); grid = new DataGrid(); MakePanel(grid); } Ext.onReady(loader); </script> </div> </form></body></html>2,后台cs文件:JsonData.aspx.csusing Newtonsoft.Json;public partial class GridPanel_JsonData : System.Web.UI.Page{ protected void Page_Load(object sender, EventArgs e) { 分页参数#region 分页参数 int pagesize = 5; int start = 1; string field, asc_desc; if (string.IsNullOrEmpty(Request["sort"])) { field = "ID"; asc_desc = "ASC"; } else { field = Request["sort"]; asc_desc = Request["dir"]; } if (!string.IsNullOrEmpty(Request["limit"])) { pagesize = int.Parse(Request["limit"]); start = int.Parse(Request["start"]); } start = start / pagesize; start += 1; #endregion string param = Convert.ToString(Request["param"]); if (param == "initData") { Bind_Data(field, asc_desc, pagesize, start, "ceshitwo"); } } private void Bind_Data(string field, string asc_desc, int pagesize, int start, string tableName) { DataSet ds = Business.GetPagingData(field, asc_desc, pagesize, start, tableName); if (ds != null && ds.Tables[0].Rows.Count > 0) { GetJsonData(ds); } else { Response.Write(""); } } private void GetJsonData(DataSet ds) { List<Hashtable> hashList = new List<Hashtable>(); for (int i = 0; i < ds.Tables[0].Rows.Count; i++) { DataRow row = ds.Tables[0].Rows[i] as DataRow; Hashtable ht = new Hashtable(); foreach (DataColumn col in ds.Tables[0].Columns) { ht.Add(col.ColumnName, row[col.ColumnName]); } hashList.Add(ht); } int? count = Access.GetCount("Select count(*) from ceshitwo"); string json = "{totalPorperty:" + count + ",result:" + JavaScriptConvert.SerializeObject(hashList) + "}"; Response.Write(json); } } <三>分页功能单独实现public class Business{ public static DataSet GetPagingData(string field, string asc_desc, int pagesize, int start,string tableName) { string sql = "WITH MOVIES AS ( " + " SELECT ROW_NUMBER() OVER " + " (ORDER BY " + field + " " + asc_desc + " ) AS Row," + " *" + " FROM " + tableName + " )" + " SELECT *" + " FROM MOVIES " + " WHERE Row between (@start-1)* @pagesize+1 and @start*@pagesize"; SqlParameter[] prams = { new SqlParameter("@start",start), new SqlParameter("@pagesize",pagesize) }; return Access.GetDataSet(sql, prams); }}<四>数据库访问层:public class Access{ public Access() { } public static string connstring = ""; private static void CreateCommand(SqlConnection conn, SqlCommand cmd, string cmdText, params SqlParameter[] prams) { conn.ConnectionString = Access.connstring; if (conn.State == ConnectionState.Closed) conn.Open(); cmd.Connection = conn; cmd.CommandText = cmdText; if (prams != null) { foreach (SqlParameter p in prams) cmd.Parameters.Add(p); } } public static DataSet GetDataSet(string cmdText) { return GetDataSet(cmdText,null); } public static DataSet GetDataSet(string cmdText, params SqlParameter[] prams) { using (SqlConnection conn = new SqlConnection()) { SqlCommand cmd = new SqlCommand(); CreateCommand(conn, cmd, cmdText, prams); DataSet ds = new DataSet(); SqlDataAdapter da = new SqlDataAdapter(cmd); da.Fill(ds); cmd.Parameters.Clear(); return ds; } } public static int? GetCount(string cmdText) { return GetCount(cmdText, null); } public static int? GetCount(string cmdText,params SqlParameter[] prams) { using (SqlConnection conn = new SqlConnection()) { SqlCommand cmd = new SqlCommand(); CreateCommand(conn, cmd, cmdText, prams); int? count; count = Convert.ToInt32( cmd.ExecuteScalar() ); cmd.Parameters.Clear(); return count; } }}说明:数据表可以使用以下语句生成即可USE [Test]GO/**//****** 对象: Table [dbo].[ceshitwo] 脚本日期: 08/26/2008 13:04:59 ******/SET ANSI_NULLS ONGOSET QUOTED_IDENTIFIER ONGOCREATE TABLE [dbo].[ceshitwo]( [ID] [int] IDENTITY(1,1) NOT NULL, [Title] [nvarchar](50) COLLATE Chinese_PRC_CI_AS NULL, [Author] [nvarchar](50) COLLATE Chinese_PRC_CI_AS NULL, [Source] [nvarchar](50) COLLATE Chinese_PRC_CI_AS NULL, [PostDate] [datetime] NULL CONSTRAINT [DF_ceshitwo_PostDate] DEFAULT (getdate()), CONSTRAINT [PK_ceshitwo] PRIMARY KEY CLUSTERED ( [ID] ASC)WITH (IGNORE_DUP_KEY = OFF) ON [PRIMARY]) ON [PRIMARY] 
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