DataTables不显示数据 [英] DataTables does not display data
问题描述
我正在尝试使用jQuery DataTables 控件.问题是我无法显示数据.
I'm trying the jQuery DataTables control. The problem is that I cannot display data.
HTML是:
<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="DataTablesTest.aspx.cs" Inherits="JsonTest.DataTablesTest" %>
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title>DataTables Test</title>
<script src="Scripts/jquery-1.10.2.min.js"></script>
<link href="Content/DataTables/css/jquery.dataTables.css" rel="stylesheet" />
<script src="Scripts/DataTables/jquery.dataTables.js"></script>
<link href="Content/Site.css" rel="stylesheet" />
</head>
<script>
var d = [
{ "Id": 3, "ActivityID": 91, "OperationType": 0, "UserID": 4183, "Comments": "", "ActionDate": "2006-03-19T12:26:01.673" },
{ "Id": 4, "ActivityID": 91, "OperationType": 4, "UserID": 4183, "Comments": "", "ActionDate": "2006-03-19T12:26:01.673" },
{ "Id": 5, "ActivityID": 92, "OperationType": 0, "UserID": 5688, "Comments": "", "ActionDate": "2006-03-20T12:05:40.563" }
];
$(document).ready(function () {
$('#example').dataTable({
"ajax": {
"url": "WebService1.asmx/GetData",
"type": "POST",
"dataSrc": "",
"contentType": "application/json; charset=utf-8"
},
//"data": d,
"columns": [
{ "data": "Id" },
{ "data": "ActivityID" },
{ "data": "OperationType" },
{ "data": "UserID" },
{ "data": "Comments" },
{ "data": "ActionDate" }
]
});
var table = $('#example').DataTable();
alert('There are' + table.data().length + ' row(s) of data in this table');
});
</script>
<body>
<form id="form1" runat="server">
<div>
<table id="example" class="display">
<thead>
<tr>
<th>ActivityHistoryID</th>
<th>AH_ActivityID</th>
<th>AH_OperationType</th>
<th>AH_UserID</th>
<th>AH_Comments</th>
<th>AH_TimeStamp</th>
</tr>
</thead>
<tbody>
</tbody>
</table>
</div>
</form>
</body>
</html>
如果我注释掉Ajax代码并取消注释
If I comment out the Ajax code and uncomment the
//"data": d,
工作正常. d变量是我使用firefox-> developer-> network-> xhr->响应对话框从服务获取的JSON数据.
It works fine. The d variable is the JSON data that I get from the service using firefox->developer->network->xhr->response dialog.
我阅读了很多帖子，尝试了很多事情，但无法使其正常工作. 有什么帮助吗? 谢谢.
I read many posts and I tried many things but I can't make it work. Any help? Thanks.
服务代码:
namespace JsonTest
{
/// <summary>
/// Summary description for WebService1
/// </summary>
[WebService(Namespace = "http://tempuri.org/")]
[WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]
[System.ComponentModel.ToolboxItem(false)]
// To allow this Web Service to be called from script, using ASP.NET AJAX, uncomment the following line.
[System.Web.Script.Services.ScriptService]
public class WebService1 : System.Web.Services.WebService
{
[WebMethod]
public string GetData()
{
var list = ActivityHistory.GetAll(); // List<ActivityHistory>
var s = Newtonsoft.Json.JsonConvert.SerializeObject(list);
return s;
//return "{\"aaData\":" + s + "}";
}
}
}
编辑2015年7月21日: 我已经对HTML代码进行了一些更改，并且正在处理一个小错误.加载时，我在页面顶部有一会儿看到表格元素的标题(ActivityHistoryID，AH_ActivityID，AH_OperationType，AH_UserID，AH_Comments，AH_TimeStamp).之后，它可以正常工作(用于60.000行！！！).
EDIT 21/07/2015: I've done some changes in HTML code and it's working with a little bug. While loading I see for a moment at the top of the page the headers of the table element (ActivityHistoryID, AH_ActivityID, AH_OperationType, AH_UserID, AH_Comments, AH_TimeStamp). After that it's working fine (for 60.000 rows!!!).
新更改的代码为:
<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="DataTablesTest.aspx.cs" Inherits="JsonTest.DataTablesTest" %>
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title>DataTables Test</title>
<script src="Scripts/jquery-1.10.2.min.js"></script>
<link href="Content/DataTables/css/jquery.dataTables.css" rel="stylesheet" />
<script src="Scripts/DataTables/jquery.dataTables.js"></script>
<link href="Content/Site.css" rel="stylesheet" />
<script>
$(document).ready(function () {
$.ajax({
type: "post",
url: "WebService1.asmx/getdata",
contentType: "application/json; charset=utf-8",
dataType: "json",
success: function (data) {
var myData = $.parseJSON(data.d);
$('#example').DataTable({
"data": myData,
"columns": [
{ "data": "Id" },
{ "data": "ActivityID" },
{ "data": "OperationType" },
{ "data": "UserID" },
{ "data": "Comments" },
{ "data": "ActionDate" }
]
});
}
});
});
</script>
</head>
<body>
<form id="form1" runat="server">
<div>
<table id="example" class="display">
<thead>
<tr>
<th>ActivityHistoryID</th>
<th>AH_ActivityID</th>
<th>AH_OperationType</th>
<th>AH_UserID</th>
<th>AH_Comments</th>
<th>AH_TimeStamp</th>
</tr>
</thead>
<tbody>
</tbody>
</table>
</div>
</form>
</body>
</html>
我的最后希望是我正在使用JQuery 1.10.2而不是datatables站点示例中的1.11.1.
My last hope is that I 'm using JQuery 1.10.2 instead of 1.11.1 which is in the examples of datatables site.
这是尝试的第三天，但我仍然无法弄清.
It 's the third day of trying and still I cannot figure it out.
编辑22/7/2015
那是有效的代码.远非示例.
That is the code that works. Far from examples.
<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="DataTablesTestWorking.aspx.cs" Inherits="JsonTest.DataTablesTestWorking" %>
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title>DataTables Test</title>
<script src="Scripts/jquery-1.11.3.min.js"></script>
<link href="Content/DataTables/css/jquery.dataTables.css" rel="stylesheet" />
<script src="Scripts/DataTables/jquery.dataTables.js"></script>
<link href="Content/Site.css" rel="stylesheet" />
<script>
$(document).ready(function () {
$('#example').hide();
$.ajax({
type: "POST",
url: "WebService1.asmx/GetData",
contentType: "application/json; charset=utf-8",
dataType: "json",
success: function (data) {
$('#example').show();
var myData = $.parseJSON(data.d);
$('#example').DataTable({
"data": myData,
"columns": [
{ "data": "Id" },
{ "data": "ActivityID" },
{ "data": "OperationType" },
{ "data": "UserID" },
{ "data": "Comments" },
{ "data": "ActionDate" }
]
});
}
});
});
</script>
</head>
<body>
<form id="form1" runat="server">
<div>
<table id="example" class="display">
<thead>
<tr>
<th>ActivityHistoryID</th>
<th>AH_ActivityID</th>
<th>AH_OperationType</th>
<th>AH_UserID</th>
<th>AH_Comments</th>
<th>AH_TimeStamp</th>
</tr>
</thead>
<tbody>
</tbody>
</table>
</div>
</form>
</body>
</html>
推荐答案
According to this post option contentType: 'application/json; charset=UTF-8' and type: 'POST' is indeed required to invoke an ASP.NET AJAX web method.
但是，为了发送JSON编码的参数而不是URL编码的参数，您需要使用 ajax.data 选项可将参数编码为JSON格式的字符串.
However, in order to send JSON-encoded parameters rather than URL-encoded parameters, you need to use ajax.data option to encode parameters into string in JSON format.
$('#example').dataTable({
"ajax": {
"url": "WebService1.asmx/GetData",
"type": "POST",
"contentType": "application/json; charset=utf-8",
"dataType": "json",
"data": function ( d ) {
return JSON.stringify( d );
},
"dataSrc": "d",
},
"columns": [
{ "data": "Id" },
{ "data": "ActivityID" },
{ "data": "OperationType" },
{ "data": "UserID" },
{ "data": "Comments" },
{ "data": "ActionDate" }
]
});
这篇关于DataTables不显示数据的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
