Ext.define('schoolModel', {

                extend: 'Ext.data.Model',

                fields: [{

                    name: 'id',

                    type: 'string'

                }, {

                    name: 'name',

                    type: 'string'

                }]

            });

            var schoolstore = Ext.create('Ext.data.Store', {

                model: 'schoolModel',

                proxy: {

                    type: 'ajax',

                    url: C_ROOT + "Base/Student/GetSchoolList",

                    reader: {

                        type: 'json',

                        root: 'Record'

                    }

                },

                autoLoad: true

            });

            var schoolCombo = Ext.create('Ext.form.field.ComboBox', {

                valueField: "id",

                displayField: 'name',

                name: 'schoolid',

                store: schoolstore,

                colspan: 1,

                fieldLabel: '所属校区',

                queryMode: "local",

                forceSelection: true,//只能选，不能输入文本

                typeAhead: true//如果匹配到已知的值将填充和自动选择键入的文本其余部分

            });