微软JScript运行时错误：无法获取财产“get_isLoading'值：对象为null或undefined [英] Microsoft JScript runtime error: Unable to get value of the property 'get_isLoading': object is null or undefined

问题描述

我想用下面的code到打印报告查看器报告，我得到一个错误，微软JScript运行时错误：无法获取财产get_isLoading'值：对象为null或未定义。任何想法？

 ＆LT; SCRIPT LANGUAGE =JavaScript的＆GT;
        功能PrintReport（）{
        VAR viewerReference = $找到（ReportViewer1）;        变种stillonLoadState = viewerReference.get_isLoading（）;        如果（！stillonLoadState）{
            变种reportArea = viewerReference.get_reportAreaContentType（）;
            如果（reportArea == Microsoft.Reporting.WebFormsClient.ReportAreaContent.ReportPage）{
                找到$（ReportViewer1）invokePrintDialog（）。
            }
        }
    }
 ＆LT; / SCRIPT＆GT;
 

解决方案

ctl00_ContentPlaceHolder1_ReportViewer1是控件的名称

I am trying to print my report viewer report using the code below and I am getting a error that Microsoft JScript runtime error: Unable to get value of the property 'get_isLoading': object is null or undefined. Any ideas?

<script language="javascript">
        function PrintReport() {
        var viewerReference = $find("ReportViewer1");

        var stillonLoadState = viewerReference.get_isLoading();

        if (!stillonLoadState) {
            var reportArea = viewerReference.get_reportAreaContentType();
            if (reportArea == Microsoft.Reporting.WebFormsClient.ReportAreaContent.ReportPage) {
                $find("ReportViewer1").invokePrintDialog();
            }
        }
    } 
 </script>

解决方案

ctl00_ContentPlaceHolder1_ReportViewer1 is the name of the control

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