text:'修改',
iconCls:'icon-save',
handler:function(){
var row = $('#table').datagrid('getSelected');
if (row) {
$("#divadd").show();
$('#divadd ').dialog({
title: "修改学生数据",
width: 350,
height: 250,
closed: false,
cache: false,
modal: true,
columns :[[
{field:'',title:'学号',width:100}
]]
});
<div id="divadd"></div>
看了下文档,你需要把表单写在id为divadd的元素内而不是通过columns创建