如何解决Microsoft JScript运行时错误：'google.visualization.Dashboard'为null或不是对象 [英] How To Solve Microsoft JScript runtime error: 'google.visualization.Dashboard' is null or not an object
本文介绍了如何解决Microsoft JScript运行时错误：'google.visualization.Dashboard'为null或不是对象的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
<head runat="server">
<title></title>>
<script type="text/javascript" src="https://www.google.com/jsapi"></script>
</head>;
<body>
<form id="form1" runat="server">
<div>
<asp:Literal ID="lt" runat="server">
<div id="dashboard_div">
<!--Divs that will hold each control and chart-->
<div id="filter_div"></div>
<div id="chart_div"></div>
</div>;
</div>
</form>
</body>
我的C＃代码： -
my C# Code:-
using System;
using System.Collections;
using System.Configuration;
using System.Data;
using System.Linq;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Xml.Linq;
using System.Data.SqlClient;
using System.Text;
public partial class dashboard : System.Web.UI.Page
{
StringBuilder str = new StringBuilder();
//Get connection string from web.config
string constr = ConfigurationManager.ConnectionStrings["constr"].ConnectionString;
protected void Page_Load(object sender, EventArgs e)
{
if (Page.IsPostBack == false)
{
BindChart();
}
}
private DataTable GetData()
{
DataTable dt = new DataTable();
string cmd = "select YEAR,sales from area_chart";
SqlDataAdapter adp = new SqlDataAdapter(cmd, constr);
adp.Fill(dt);
return dt;
}
private void BindChart()
{
DataTable dt = new DataTable();
try
{
dt = GetData();
str.Append(@" <script type='text/javascript'>
google.load('visualization', '1.0', {'packages':['controls']});
google.setOnLoadCallback(drawRegionsMap);
function drawRegionsMap() {
var data = google.visualization.arrayToDataTable([
['YEAR','sales'],");
int count = dt.Rows.Count - 1;
for (int i = 0; i <= count; i++)
{
str.Append("['" + dt.Rows[i]["YEAR"].ToString() + "', " + dt.Rows[i]["sales"].ToString() + "],");
if (i == count)
{
str.Append("['" + dt.Rows[i]["YEAR"].ToString() + "', " + dt.Rows[i]["sales"].ToString() + "]]);}");
}
}
// Create a dashboard.
str.Append("var dashboard1 = new google.visualization.Dashboard(document.getElementById('dashboard_div'));");
// Create a range slider, passing some options
str.Append("var yearslider = new google.visualization.ControlWrapper({ 'controlType': 'NumberRangeFilter', 'containerId': 'filter_div', 'options': { 'filterColumnLabel': 'YEAR' }});");
// Create a pie chart, passing some options
str.Append("var pieChart = new google.visualization.ChartWrapper({'chartType': 'PieChart','containerId': 'chart_div', 'options': { 'width': 300,'height': 300,'pieSliceText': 'value', 'legend': 'right' } });");
// Establish dependencies, declaring that 'filter' drives 'pieChart',
// so that the pie chart will only display entries that are let through
// given the chosen slider range.
str.Append("dashboard1.bind(yearslider , pieChart);");
// Draw the dashboard.
str.Append("dashboard1.draw(data);");
//str.Append("var options = { title:'year And Expance',hAxis: {title: 'Year', titleTextStyle: {color: '#333'}},};var chart = new google.visualization.AreaChart(document.getElementById('chart_div'));");
//str.Append("chart.draw(data, options);};");
str.Append("</script>");
lt.Text = str.ToString();
}
catch
{
}
}
}
当执行此错误时
像这样来我怎么解决
1）Microsoft JScript运行时错误：'google.visualization.Dashboard'为null或不是对象
2）Microsoft JScript运行时错误： 'google.visualization.ControlWrapper'为null或不是对象
3）Microsoft JScript运行时错误：'dashboard1'为null或不是对象
我怎么能把这些错误帮助我
when e execute this error coming like this how can i solve
1)Microsoft JScript runtime error: 'google.visualization.Dashboard' is null or not an object
2)Microsoft JScript runtime error: 'google.visualization.ControlWrapper' is null or not an object
3)Microsoft JScript runtime error: 'dashboard1' is null or not an object
how can i sove these errors help me
推荐答案
这是一个明确定义的Google数据可视化示例，< br $> b $ b
https：//开发人员.google.com / chart / interactive / docs / gallery / controls？hl = en [ ^ ]
现在你的情况：
我搞砸了它： https://jsfiddle.net/mghu803f/ [< a href =https://jsfiddle.net/mghu803f/target =_ blanktitle =New Window> ^ ]
查看它并回复你想要的东西。
Hi,
This is a well defined example of Google data visualization,
https://developers.google.com/chart/interactive/docs/gallery/controls?hl=en[^]
Now in your case :
I have fiddled it : https://jsfiddle.net/mghu803f/[^]
Just view it and reply what you want is this it.
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