Easyui datagrid行内【添加】、【编辑】、【上移】、【下移】_JAVA_编程开发_程序员俱乐部

1、首先大概说下这几个功能里用到的主要方法，行内添加数据主要是添加列的editor属性, 行内编辑主要使用beginEdit(), endEdit(),同时一个关键就是拿到当前的操作行索引editIndex.

2、撤销用到了rejectChanges().

3、保存时使用getRows()或者getChanges(). getChanges()主要是获取添加或编辑的数据，getRows()获取到本页所有数据，主要是配合【上移】【下移】方法使用。

4、在做这个功能中我使用了一个序列化前台对象组件【json.js】，这个组件可以很方便的把前台的对象转化成json字符串，然后传到后台，实在是方便至极让我眼前一亮，要知道就在这个功能前面我还手动处理数组，使用join()拼字符串，当找到这个组件时速度效率一下几提起来了，实在是相见恨晚。



5、在做这个功能，用到这些方法时遇到的问题，刚开始时我是看easyui的官方demo，我发现添加数据后点保存，再点获取数据时就获取不到了，后经过测试发现好像是调用了acceptChanges()引起的问题。

class="java" name="code">function GetTable() {
????var editRow = undefined;
?
????$("#Student_Table").datagrid({
????????height: 300,
????????width: 450,
????????title: '学生表',
????????collapsible: true,
????????singleSelect: true,
????????url: '/Home/StuList',
????????idField: 'ID',
????????columns: [[
?????????{ field: 'ID', title: 'ID', width: 100 },
????????????{ field: 'Name', title: '姓名', width: 100, editor: { type: 'text', options: { required: true } } },
????????????{ field: 'Age', title: '年龄', width: 100, align: 'center', editor: { type: 'text', options: { required: true } } },
????????????{ field: 'Address', title: '地址', width: 100, align: 'center', editor: { type: 'text', options: { required: true } } }
????????]],
????????toolbar: [{
????????????text: '添加', iconCls: 'icon-add', handler: function () {
????????????????if (editRow != undefined) {
????????????????????$("#Student_Table").datagrid('endEdit', editRow);
????????????????}
????????????????if (editRow == undefined) {
????????????????????$("#Student_Table").datagrid('insertRow', {
????????????????????????index: 0,
????????????????????????row: {}
????????????????????});
?
????????????????????$("#Student_Table").datagrid('beginEdit', 0);
????????????????????editRow = 0;
????????????????}
????????????}
????????}, '-', {
????????????text: '保存', iconCls: 'icon-save', handler: function () {
????????????????$("#Student_Table").datagrid('endEdit', editRow);
?
????????????????//如果调用acceptChanges(),使用getChanges()则获取不到编辑和新增的数据。
?
????????????????//使用JSON序列化datarow对象，发送到后台。
????????????????var rows = $("#Student_Table").datagrid('getChanges');
?
????????????????var rowstr = JSON.stringify(rows);
????????????????$.post('/Home/Create', rowstr, function (data) {
?????????????????????
????????????????});
????????????}
????????}, '-', {
????????????text: '撤销', iconCls: 'icon-redo', handler: function () {
????????????????editRow = undefined;
????????????????$("#Student_Table").datagrid('rejectChanges');
????????????????$("#Student_Table").datagrid('unselectAll');
????????????}
????????}, '-', {
????????????text: '删除', iconCls: 'icon-remove', handler: function () {
????????????????var row = $("#Student_Table").datagrid('getSelections');
?????????????????
????????????}
????????}, '-', {
????????????text: '修改', iconCls: 'icon-edit', handler: function () {
????????????????var row = $("#Student_Table").datagrid('getSelected');
????????????????if (row !=null) {
????????????????????if (editRow != undefined) {
????????????????????????$("#Student_Table").datagrid('endEdit', editRow);
????????????????????}
?
????????????????????if (editRow == undefined) {
????????????????????????var index = $("#Student_Table").datagrid('getRowIndex', row);
????????????????????????$("#Student_Table").datagrid('beginEdit', index);
????????????????????????editRow = index;
????????????????????????$("#Student_Table").datagrid('unselectAll');
????????????????????}
????????????????} else {
?????????????????????
????????????????}
????????????}
????????}, '-', {
????????????text: '上移', iconCls: 'icon-up', handler: function () {
????????????????MoveUp();
????????????}
????????}, '-', {
????????????text: '下移', iconCls: 'icon-down', handler: function () {
????????????????MoveDown();
????????????}
????????}],
????????onAfterEdit: function (rowIndex, rowData, changes) {
????????????editRow = undefined;
????????},
????????onDblClickRow:function (rowIndex, rowData) {
????????????if (editRow != undefined) {
????????????????$("#Student_Table").datagrid('endEdit', editRow);
????????????}
?
????????????if (editRow == undefined) {
????????????????$("#Student_Table").datagrid('beginEdit', rowIndex);
????????????????editRow = rowIndex;
????????????}
????????},
????????onClickRow:function(rowIndex,rowData){
????????????if (editRow != undefined) {
????????????????$("#Student_Table").datagrid('endEdit', editRow);
?
????????????}
????????????
????????}
????????
????}); 
}

上移下移代码：

<br><br>//上移
function MoveUp() {
????var row = $("#Student_Table").datagrid('getSelected'); 
????var index = $("#Student_Table").datagrid('getRowIndex', row);
????mysort(index, 'up', 'Student_Table');
?????
}
//下移
function MoveDown() {
????var row = $("#Student_Table").datagrid('getSelected');
????var index = $("#Student_Table").datagrid('getRowIndex', row);
????mysort(index, 'down', 'Student_Table');
?????
}
?
?
function mysort(index, type, gridname) {
????if ("up" == type) {
????????if (index != 0) {
????????????var toup = $('#' + gridname).datagrid('getData').rows[index];
????????????var todown = $('#' + gridname).datagrid('getData').rows[index - 1];
????????????$('#' + gridname).datagrid('getData').rows[index] = todown;
????????????$('#' + gridname).datagrid('getData').rows[index - 1] = toup;
????????????$('#' + gridname).datagrid('refreshRow', index);
????????????$('#' + gridname).datagrid('refreshRow', index - 1);
????????????$('#' + gridname).datagrid('selectRow', index - 1);
????????}
????} else if ("down" == type) {
????????var rows = $('#' + gridname).datagrid('getRows').length;
????????if (index != rows - 1) {
????????????var todown = $('#' + gridname).datagrid('getData').rows[index];
????????????var toup = $('#' + gridname).datagrid('getData').rows[index + 1];
????????????$('#' + gridname).datagrid('getData').rows[index + 1] = todown;
????????????$('#' + gridname).datagrid('getData').rows[index] = toup;
????????????$('#' + gridname).datagrid('refreshRow', index);
????????????$('#' + gridname).datagrid('refreshRow', index + 1);
????????????$('#' + gridname).datagrid('selectRow', index + 1);
????????}
????}
?
}

后台获取代码：

[HttpPost]
?public ActionResult Create()
?{
?????string result = Request.Form[0];
???????
?????//后台拿到字符串时直接反序列化。根据需要自己处理
?????var list = JsonConvert.DeserializeObject<List<Student>>(result);
?
?????return Json(true);
?}