求助:PDept是个ComboBox,绑定了数据.

为啥这个选择不了呢,不管选择第几项,,都是第一项.

代码如下:

 var cmboxStore = new Ext.data.Store({
        proxy: new Ext.data.HttpProxy({
            url: this.ControllerURL,
            method: "POST"
        }),

        reader: new Ext.data.JsonReader({
            fields: this.Fields,
            root: "ListData.Rows",
            id: this.PKField
        }),
        baseParams: {
            'RequestType': RequestType.Other
        }
    });
    cmboxStore.load();

var cmboxParentID = new Ext.form.ComboBox({
        editable: true,
        name: 'Parent_ID',
        hiddenName: 'Parent_ID',
        //id: 'cmboxParent_ID',
        triggerAction: 'all',
        store: cmboxStore, // 设置数据源
        displayField: 'ORG_Name',
        valueField: 'ORG_ID',
        mode: 'local',
        pageSize: 0, // 非0，显示分页
        handleHeight: 15,
        maxHeight: 100,
        width: 252,
        resizable: true,
        forceSelection: true,
        typeAhead: true,
        typeAheadDelay: 250,
        allowBlank: false,
        maxLength: 64,
        grow: true, //true时,可根据内容自动伸缩
        emptyText: ResManager.GetString('pDept'),
        allowBlank: false, // 不允许为空
        selectOnFocus: true
    });