Extjs怎么删除Grid的记录

下面代码是Ext.grid.GridPanel 的一个tbar的Ext.Button提交删除:

tbar : [new Ext.Button ({allowDepress : false,


[code]handler : function() {NewHall();},

iconCls : 'add',

text : '新增'

})

,

new Ext.Button ({allowDepress : false,

handler : function() {

Ext.MessageBox.confirm('提示', '确实要删除所选的记录吗?',function (btn){

if(btn=='yes'){

var row=extWindowDepartmentList.getSelections();

var jsonData="";

for(var i=0,len=row.length;i<len;i++){

var ss = row[i].get("Id"); //这里为Grid数据源的Id列

if(i==0)

jsonData = jsonData + ss;

else

jsonData = jsonData + ","+ ss;     }

var conn = new Ext.data.Connection();

conn.request(

{          url: "/Department/Del",        //提交的删除地址

        params:{strProjects: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！");

extWindowDepartmentList.store.reload({params:{start:0, limit:25}}); //重新load数据

}

else

{Ext.MessageBox.alert("提示","所选记录删除失败！");}

}

}) 

} 

})

;},

iconCls : 'del',

text : '删除'

})

]

[/code]

.csharpcode, .csharpcode pre
{
font-size: small;
color: black;
font-family: consolas, "Courier New", courier, monospace;
background-color: #ffffff;
/*white-space: pre;*/
}
.csharpcode pre { margin: 0em; }
.csharpcode .rem { color: #008000; }
.csharpcode .kwrd { color: #0000ff; }
.csharpcode .str { color: #006080; }
.csharpcode .op { color: #0000c0; }
.csharpcode .preproc { color: #cc6633; }
.csharpcode .asp { background-color: #ffff00; }
.csharpcode .html { color: #800000; }
.csharpcode .attr { color: #ff0000; }
.csharpcode .alt
{
background-color: #f4f4f4;
width: 100%;
margin: 0em;
}
.csharpcode .lnum { color: #606060; }