easyui增删改查前段代码

<script>
    var url;
    //添加用户窗体
    function newUser()
    {
        $('#dlg').dialog('open').dialog('setTitle', '学生信息添加');
        $('#fm').form('clear');
        url = '/Students/Add';
    }
    //编辑
    function editUser()
    {
        var row = $('#dg').datagrid('getSelected');
        if (row) {
            $('#dlg').dialog('open').dialog('setTitle', '修改学生信息');
            $('#fm').form('load', row);
            url = '/Students/Edit/' + row.StuId;
        }
    }
    //提交方法
    function saveUser() {
        $('#fm').form('submit', {
            url: url,
            onSubmit: function () {
                return $(this).form('validate');
            },
            success: function (data) {
                if (data.Result==false) {
                    $.messager.show({
                        title: 'Error',
                        msg: data.Message
                    });
                } else {
                    $('#dlg').dialog('close');        // close the dialog
                    $('#dg').datagrid('reload');    // reload the user data
                }
            }
        });
    }
    function InitGrid()
    {
        $("#dg").datagrid({
            url: '/Students/StudentRead',
            title: '学生列表',
            toolbar: '#toolbar',
            rownumbers: true,
            fitcolumns: true,
            singleselect: true

        });
    }


</script>

<table id="dg" title="My Users" class="easyui-datagrid" style="550px;height:250px"
       url="/Students/StudentRead"
       toolbar="#toolbar"
       rownumbers="true" fitcolumns="true" singleselect="true">
    <thead>
        <tr>
            <th field="StuName" width="50">学生姓名</th>
            <th field="Age" width="50">年龄</th>
            <th field="Sex" width="50">性别</th>
            <th field="CreateTime" width="50">创建时间</th>
        </tr>
    </thead>
</table>

<div id="toolbar">
    <a href="#" class="easyui-linkbutton" iconcls="icon-add" plain="true" onclick="newUser()">New User</a>
    <a href="#" class="easyui-linkbutton" iconcls="icon-edit" plain="true" onclick="editUser()">Edit User</a>
    <a href="#" class="easyui-linkbutton" iconcls="icon-remove" plain="true" onclick="destroyUser()">Remove User</a>
</div>

<div id="dlg" class="easyui-dialog" style="400px;height:280px;padding:10px 20px"
     closed="true" buttons="#dlg-buttons">
    <div class="ftitle">学生信息</div>
    <form id="fm" method="post">
        <div class="fitem">
            <label>StuName:</label>
            <input name="StuName" class="easyui-textbox">
        </div>
        <div class="fitem">
            <label>Age:</label>
            <input name="Age" class="easyui-textbox">
        </div>
        <input type="hidden" name="StuId"/>
    </form>
</div>
<div id="dlg-buttons">
    <a href="#" class="easyui-linkbutton" iconcls="icon-ok" onclick="saveUser()">Save</a>
    <a href="#" class="easyui-linkbutton" iconcls="icon-cancel" onclick="javascript:$('#dlg').dialog('close')">Cancel</a>
</div>