Extjs Combo控件 下拉选择之后的事件触发

combo控件的定义：

items: [
    {
        xtype: 'combo',
        id: "cbdomain",
        x: 60,
        y: 10, //27
        width: 120,
        editable: false,
        store:getAllDomainstore,
        mode: 'remote',
        valueFiled: 'domdesc',
        displayField:'domdesc',
        allowBlank: false,
        enabled:false,
        triggerAction: "all",
        selectOnFocus : true,
        forceSelection : true
    }
]

添加select方法：

Ext.ComponentMgr.get("cbdomain").on('select',function (){
    var domainValue = Ext.ComponentMgr.get("cbdomain").getValue();
    var userName = Ext.ComponentMgr.get("cusername").getValue();
    		
    casestore.baseParams={				
        webAction:'getAllCases',
        username:userName,
        domain: domainValue,//Ext.ComponentMgr.get('cbdomain').getValue(),
        phrase: Ext.ComponentMgr.get('phraseSearch').getValue(),													
        logicForm: Ext.ComponentMgr.get('logicformSearch').getValue(),
        ignoreconflict:'true',
        start: 0,
        limit: 30
    };
			
    casestore.load();
});