Google 可视化在 AJAX Control Toolkit Tab Control 内部很小 [英] Google visualization is small inside AJAX Control Toolkit Tab Control
问题描述
我正在尝试在 asp.net AJAX 工具包选项卡控件中使用谷歌可视化柱形图,但我遇到了一些小问题(字面意思).
如果我将可视化添加到页面加载时默认显示的选项卡,条形图会正确显示,但是,如果我将相同的控件添加到另一个选项卡并重新加载页面,当我单击另一个选项卡时,该控件已显示,但它很小且无法使用.
下面是一些说明问题的 test.aspx 页面的代码:
<%@ Page Language="vb" AutoEventWireup="false" CodeBehind="Default.aspx.vb" Inherits="TestProject._Default" %><%@ 注册程序集="AjaxControlToolkit" 命名空间="AjaxControlToolkit" TagPrefix="cc1" %><!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 过渡//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head id="Head1" runat="server"><标题></标题><script type="text/javascript" src="http://www.google.com/jsapi"></script><脚本类型="文本/javascript">google.load('visualization', '1', { packages: ['columnchart'] });</脚本><脚本类型="文本/javascript">函数绘制可视化(){//创建并填充数据表.var data = new google.visualization.DataTable();data.addColumn('string', 'Name');data.addColumn('数字', '高度');数据.addRows(3);data.setCell(0, 0, '童宁木');data.setCell(1, 0, '黄昂发');data.setCell(2, 0, '腾女');data.setCell(0, 1, 174);data.setCell(1, 1, 523);data.setCell(2, 1, 86);//创建和绘制可视化.新的 google.visualization.ColumnChart(document.getElementById('visualization1')).绘制(数据,空);新的 google.visualization.ColumnChart(document.getElementById('visualization2')).绘制(数据,空);}google.setOnLoadCallback(drawVisualization);</脚本></头><身体><form id="form1" runat="server"><asp:ScriptManager ID="ScriptManager1" runat="server"></asp:ScriptManager><cc1:TabContainer ID="TabContainer1" runat="server"><cc1:TabPanel runat="server" HeaderText="TabPanel1" ID="TabPanel1"><内容模板><div id="visualization1" style="width: 300px; height: 300px;"></div></内容模板></cc1:TabPanel><cc1:TabPanel runat="server" HeaderText="TabPanel1" ID="TabPanel2"><内容模板><div id="visualization2" style="width: 300px; height: 300px;"></div></内容模板></cc1:TabPanel></cc1:TabContainer></div></表格></身体></html> 解决方案 好的,我没有收到对这篇文章的单一回复,所以这是我解决问题的方法,希望对某人有所帮助.
我从来没有真正找到这个问题的根源,但我发现如果我延迟加载可视化直到包含它的选项卡被点击,那么问题就会消失.
在 TabControl 中,我调用一个 JavaScript 函数来在单击时加载选项卡可视化:
<cc1:TabContainer ID="TabContainer1" runat="server" OnClientActiveTabChanged="tabChanged"><cc1:TabPanel runat="server" HeaderText="TabPanel1" ID="TabPanel1"><内容模板><div id="visualization1" style="width: 300px; height: 300px;"></div></内容模板></cc1:TabPanel><cc1:TabPanel runat="server" HeaderText="TabPanel1" ID="TabPanel2"><内容模板><div id="visualization2" style="width: 300px; height: 300px;"></div></内容模板></cc1:TabPanel></cc1:TabContainer>
JavaScript 函数
function tabChanged(sender, args) {var ActiveTab = sender.get_activeTabIndex();if (sender.get_activeTabIndex() == 0) {if (tab0Loaded != true) {//加载可视化新的 google.visualization.ColumnChart(document.getElementById('visualization2')).draw(data, null);tab0Loaded = 真}}if (sender.get_activeTabIndex() == 1) {if (tab1Loaded != true) {//加载可视化新的 google.visualization.ColumnChart(document.getElementById('visualization2')).draw(data, null);tab1Loaded = 真}}}
在回发期间,活动选项卡可能会发生变化,为了解决这个问题,我有一个在页面加载时执行的 JavaScript 函数,如果当前活动选项卡是包含可视化的选项卡,那么我会加载它.
I'm trying to use a google visualisation, the column chart, inside an asp.net AJAX Toolkit Tab Control, but I'm having small (literally) problems.
If I add the visualisation to the tab that's displayed by default when the page loads, the bar chart displays correctly, however, if I add the same control to another tab and reload the page, when I click on the other tab, the control is displayed, but its tiny and unusable.
Here's some code for a test.aspx page that illustrates the problem:
<%@ Page Language="vb" AutoEventWireup="false" CodeBehind="Default.aspx.vb" Inherits="TestProject._Default" %>
<%@ Register Assembly="AjaxControlToolkit" Namespace="AjaxControlToolkit" TagPrefix="cc1" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head id="Head1" runat="server">
<title></title>
<script type="text/javascript" src="http://www.google.com/jsapi"></script>
<script type="text/javascript">
google.load('visualization', '1', { packages: ['columnchart'] });
</script>
<script type="text/javascript">
function drawVisualization() {
// Create and populate the data table.
var data = new google.visualization.DataTable();
data.addColumn('string', 'Name');
data.addColumn('number', 'Height');
data.addRows(3);
data.setCell(0, 0, 'Tong Ning mu');
data.setCell(1, 0, 'Huang Ang fa');
data.setCell(2, 0, 'Teng nu');
data.setCell(0, 1, 174);
data.setCell(1, 1, 523);
data.setCell(2, 1, 86);
// Create and draw the visualizations.
new google.visualization.ColumnChart(document.getElementById('visualization1')).
draw(data, null);
new google.visualization.ColumnChart(document.getElementById('visualization2')).
draw(data, null);
}
google.setOnLoadCallback(drawVisualization);
</script>
</head>
<body>
<form id="form1" runat="server">
<asp:ScriptManager ID="ScriptManager1" runat="server">
</asp:ScriptManager>
<div>
<cc1:TabContainer ID="TabContainer1" runat="server">
<cc1:TabPanel runat="server" HeaderText="TabPanel1" ID="TabPanel1">
<ContentTemplate>
<div id="visualization1" style="width: 300px; height: 300px;">
</div>
</ContentTemplate>
</cc1:TabPanel>
<cc1:TabPanel runat="server" HeaderText="TabPanel1" ID="TabPanel2">
<ContentTemplate>
<div id="visualization2" style="width: 300px; height: 300px;">
</div>
</ContentTemplate>
</cc1:TabPanel>
</cc1:TabContainer>
</div>
</form>
</body>
</html>
解决方案 Ok, I didn't get a single response to this post so here is how I worked around the problem, hope it helps someone.
I never actually got the the root of this problem but I found that if I delayed the loading of the Visualisations till the tab that contains it is clicked then the problem goes away.
In the TabControl I call a JavaScript function to load the tabs visualisation when clicked:
<cc1:TabContainer ID="TabContainer1" runat="server" OnClientActiveTabChanged="tabChanged">
<cc1:TabPanel runat="server" HeaderText="TabPanel1" ID="TabPanel1">
<ContentTemplate>
<div id="visualization1" style="width: 300px; height: 300px;"></div>
</ContentTemplate>
</cc1:TabPanel>
<cc1:TabPanel runat="server" HeaderText="TabPanel1" ID="TabPanel2">
<ContentTemplate>
<div id="visualization2" style="width: 300px; height: 300px;"></div>
</ContentTemplate>
</cc1:TabPanel>
</cc1:TabContainer>
The JavaScript function
function tabChanged(sender, args) {
var ActiveTab = sender.get_activeTabIndex();
if (sender.get_activeTabIndex() == 0) {
if (tab0Loaded != true) {
//load the visualisation
new google.visualization.ColumnChart(document.getElementById('visualization2')).draw(data, null);
tab0Loaded = true
}
}
if (sender.get_activeTabIndex() == 1) {
if (tab1Loaded != true) {
//load the visualisation
new google.visualization.ColumnChart(document.getElementById('visualization2')).draw(data, null);
tab1Loaded = true
}
}
}
During postback the active tab could change, to cope with this I have a JavaScript function that executes when the page loads, if the current active tab is one containing a visualisation then I load it.
这篇关于Google 可视化在 AJAX Control Toolkit Tab Control 内部很小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!
查看全文