Ext JS grid 查找，删除，修改

var sm=new Ext.grid.CheckboxSelectionModel(); //{handleMouseDown:Ext.emptyFn}
	var cm=new Ext.grid.ColumnModel([
	      new Ext.grid.RowNumberer(),
		  sm,
		{header:'设备条码',
		dataIndex:'Id'
		},
		
		{header:'主号',
		dataIndex:'Mainnum'
		},
		
		{header:'设备SIM卡号',
		dataIndex:'SimID'
				},
				
		{header:'车牌号',
		dataIndex:'CarID',
		editor:new Ext.grid.GridEditor(
			new Ext.form.TextField({
				allowBlank:false
				}))
				},
				
		{header:'组号',
		dataIndex:'TearID'
				},
				
		{header:'平台服务期',
		dataIndex:'LimitTime',type:'date',renderer:Ext.util.Format.dateRenderer('Y年m月d日')
				},
				
		{header:'注册时间',
		dataIndex:'RegisteredTime',type:'date',renderer:Ext.util.Format.dateRenderer('Y年m月d日')
				},
		{header:'设备状态',
		dataIndex:'EquipmentState'
				}
		]);
		
		
		var webAction = "firstLoadDeviceTree";  //定义执行查询所有信息，还是指定信息的参数变量
		var contentStr = "";    //定义查询时的参数变量
		
	var store=new Ext.data.Store({
		proxy:new Ext.data.HttpProxy({url:'http://192.168.16.120/123/DataPage.aspx'}),
		reader:new Ext.data.JsonReader({
		totalProperty: 'totalProperty',
            root: 'root'
		},[
			{name:'Id'},
			{name:'Mainnum'},
			{name:'SimID'},
			{name:'CarID'},
			{name:'TearID'},
			{name:'LimitTime',type:'date',dateFormat:'Y-m-d'},
			{name:'RegisteredTime',type:'date',dateFormat:'Y-m-d'},
			{name:'EquipmentState'},
		]),
		pruneModifiedRecords:true
		});
  

		//var ogrid = this.grid; 
		
		var grid=new Ext.grid.EditorGridPanel({
		height:500,
		//width:980,
		layout:'fit',
		store:store,
		loadMask:{msg:'数据加载中，请稍侯……'},
		cm:cm,
		sm:sm,
		selModel: new Ext.grid.RowSelectionModel({singleSelect:true}),//设置单行选中模式, 否则将无法删除数据 
		viewConfig:{
			forceFit:true
			},
				
		bbar: new Ext.PagingToolbar({
             pageSize:4,
			 store: store,
             displayInfo: true,
			 displayMsg: '显示第 {0} 条到 {1} 条记录，一共 {2} 条',
			 emptyMsg: "没有记录",
			 items:[{text:'请输入主号或SIM卡号：'},{xtype:'textfield',id:'contentStr'},'-','-',
			 
			 {text:'查询信息',
			 handler:function(){
				
			    contentStr = Ext.get('contentStr').getValue(); //获取查询的信息值
			    webAction = "searchDevice";   //改变查询的参数
			    store.baseParams.webAction = webAction;  //设置参数
			    store.baseParams.contentStr= contentStr;
			    store.load({params:{start:0,limit:4,webAction:webAction,contentStr:contentStr}});	//加载数据
			 }},'-','-',
			 
			{	
				//iconCls:'remove',   
                text:'删除信息',   
                //handler:doDelete
				handler:function(){
					var store = grid.getStore();
					var thisColumn = grid.getSelectionModel(); 
					var allColumn = thisColumn.getSelections();
					var isNull=allColumn;
					 //store.remove(allColumn)
					 if(!isNull.length){
						  Ext.Msg.alert('提示信息','请选择要删除的数据，否则无法进行删除操作！');
						  return;
						 }else{
					var x = "";
					for(var i=0;i<=allColumn.length-1;i++){
					var record = store.getAt(i);
                    var sim = record.get("SimID");
						  if(i<allColumn.length-1){
							  x += sim+',';
							  }
							else{
								x +=sim;
								 }
						}
						Ext.Msg.confirm('提示信息','你确定要删除所选数据吗？',function(btn){
							 if(btn=="yes"){
								  Ext.MessageBox.wait("正在删除数据，请稍候......", "请稍侯");
							Ext.Ajax.request({
								url:'http://192.168.16.120/123/DataPage.aspx?webAction=deleteDeviceInfor&sim_card='+x,		 
								success:function(response){
									Ext.Msg.alert('提示信息','数 据 删 除 成 功！');
									 var text = response.responseText;
							      	 store.remove(allColumn);
									 store.reload();
									// store.getStore().reload();
									    },
									failure:function()
									{
										alert('错误信息','连接失败，请稍候重试！');	
										}				 
												 })
									  }	
									 })
				}}
				},'-','-',
				
			{text:'刷新',
			 handler:function(){
			   webAction = "firstLoadDeviceTree";   //改变查询的参数
			   store.baseParams.webAction = webAction;  //设置参数
			   store.load({params:{start:0,limit:4,webAction:webAction}});	//加载数据
			    Ext.getCmp('contentStr').reset();
			 }
			 }]
			 })
			 });
		
		          
			

			  grid.on("afteredit", afteredit, grid);//监听编辑后事件     
				  function afteredit(e){  
					   var store = grid.getStore();
					   var i =grid.getSelectionModel().lastActive;//获取所在行的索引；
					   var records = store.getAt(i)//获得所在行数据
					   var sim = records.get("SimID")//获得所在行SimID值
					   var Changevalue = e.value;//修改后的值
					
						 Ext.Ajax.request({
							url:'http://192.168.16.120/123/DataPage.aspx?webAction=updateDeviceInfor&sim_card='+sim+'&car_num='+Changevalue,		  
								success:function(response){
									Ext.Msg.alert('修改信息'+response.responseText)
									},	  
								failure:function(){
									Ext.Msg.alert(error)
									}	  
									  })      
} 
		
		
		store.baseParams.webAction = webAction;  //设置参数
	    store.load({params:{start:0,limit:4,webAction:webAction}});	  //加载数据