EXTJS 添加及删除数据

var newwin;

function showAddPanel(){
         newwin = new Ext.Window({
         xtype: 'window',
        title: "添加数据",
                modal: 'true', 
                width:620,
                height: 435,
                closeAction:'hide',
                items:
                   addForm,
                buttons: [{
                    id:'btnSave',
                    text:'保 存',
                    handler:doSave,
                    disabled:false
                   },{
                    text: '取 消',
                   handler: function(){
                     newwin.hide();
                    }
                }]
            });
        newwin.show(this);
        
    }; 
    
    //------addForm 
var addForm = new Ext.FormPanel({
        labelWidth: 75, // label settings here cascade unless overridden
        bodyStyle:'padding:5px 5px 0',
        items: [{
                 xtype:'textfield',
                fieldLabel: '标题',
                name: 'title',
                width: 230,
                allowBlank:false
            },{
                 xtype:'textfield',
                 width: 230,
                fieldLabel: '作者',
                name: 'hca_art_author'
          
               
            },{
                fieldLabel: '内容',
                name: 'hca_art_content',
                //width: 600,
                //height:450,
                xtype:'htmleditor',
            } ]
          });
        

//保存按钮事件
function doSave()
   {
          Ext.MessageBox.show({
                    msg: '正在保存数据, 请稍侯',
                    progressText: '正在保存中',
                    width:300,
                    wait:true,
                   waitConfig: {interval:200},
                    icon:'ext-mb-save',
                    nimEl: 'btnSave'
                 });
                
          addForm.getForm().submit({
           url:'json_grid/art_add.aspx?list=add',
            method:'POST',
           success: function(form, action){
                Ext.MessageBox.hide();
               Ext.MessageBox.alert('提示', '数据保存成功！');
               newwin.hide(this);
              store.load({params:{start:0, limit:25}}); 
            },
            failure: function(form, action){
                 Ext.MessageBox.hide();
                 Ext.MessageBox.show({
                   title:'错误',
                   msg: '数据保存失败！',
                    buttons: Ext.Msg.OK,
                    icon: Ext.MessageBox.ERROR
                });
           }
         });
   }
//处理批量删除  
    function delall(){
        Ext.MessageBox.confirm('提示', '确实要删除所选的记录吗?',showResult);
    }  
    function showResult(btn){
         if(btn=='yes'){
              var gsm = grid.getSelectionModel();//获取选择列 
              var row = gsm.getSelections();//根据选择列获取到所有的行
                    var jsonData="";
          for(var i=0;i<row.length;i++){
            var ss = row[i].get("hca_art_id");
                      jsonData =jsonData+ ss+ ";";   //这样处理是为了删除的Lambda语句方便
         }
                 var conn = new Ext.data.Connection();
          conn.request({
            url:"json_grid/art_add.aspx?list=dell", //请注意引用的路径
            params:{strdel:jsonData},
            method: 'post',
            scope: this,
           callback:function(options,success, response){ 
          if(success){   
             Ext.MessageBox.alert("提示","所选记录成功删除！");
              store.load({params:{start:0, limit:25}});     
            }    
            else     
               {Ext.MessageBox.alert("提示","所选记录删除失败！");}     
           }  
        })
        }
    };  

art_add.aspx页面

  protected string strJson = string.Empty;

    protected void Page_Load(object sender, EventArgs e)
    {
        string list = Request.QueryString["list"].ToString().Trim();
       // string strdel = Request.Form["strdel"].ToString().Trim();
        switch (list)
        {
            case "add": insert(); break;
            case "dell": delall(Request.Form["strdel"].ToString().Trim()); break;
        }
      
    } 
    public void insert()
    { 
     string title = Request.Form["title"].ToString();
     string hca_art_author = Request.Form["hca_art_author"].ToString();
     string hca_art_content = Request.Form["hca_art_content"].ToString();
     int i = DbHelperSQL.ExecuteSql("insert into hca_art (hca_art_title,hca_art_author,hca_art_content) values('" + title + "','" + hca_art_author + "','" + hca_art_content + "')");
        try {
         
          if (i > 0)
          {
              strJson = @"{success: true}";
          }
          else
          {
             
              strJson = @"{success: false}";
          }
        }
        catch(Exception ex)
           {
                string strMsg = ex.Message;
                strJson = @"{success: false}";
            }
        Response.Write(strJson);
      
    }

    public bool delall(string strdel)
    {
        bool result = false;
        try
        { string[] a;
        a = strdel.Split(';');
        for (int i = 0; i < a.Length;i++)
        {
            DbHelperSQL.ExecuteSql("DELETE FROM  hca_art where hca_art_id=" + a[i]);
        }
           result = true;
         }
        catch
        {
            result = false;

        }
       
        return result;
      
    }

        
    }