无法获取未定义或空引用的 属性 'setSrc':无法找出此错误。

Unable to get property 'setSrc' of undefined or null reference: Cant figure out this error.

我已从 CRM 2011 升级到 CRM 2015 Online,当我打开 "Contact:Information" 记录时,我收到一条错误消息:无法获取 属性 'setSrc' of undefined or null在 fiframhistory(Web 资源名称)中参考 这是我用来显示与联系人记录的 GUID 相关的记录的 Iframe。这是代码:

function fIframeHistory() {
    var vCustomerID = Xrm.Page.data.entity.getId();
    if (vCustomerID == null) {
        Xrm.Page.getControl("IFRAME_ACTIVITY_HISTORY").setVisible(false);
        Xrm.Page.getControl("IFRAME_ACTIVITIES_OPEN").setVisible(false);
    }
    else {
        var vURL = "http://aac.phoenixcoyotes.com/coyoteshockeyllc/userdefined/areas.aspx?oId=" + vCustomerID + "&oType=2&pagemode=iframe&security=852023&tabSet=areaActivityHistory";
 //var vURL = "http://coyotescrm/coyoteshockeyllc/userdefined/areas.aspx?oId=" + vCustomerID + "&oType=2&pagemode=iframe&security=852023&tabSet=areaActivityHistory";

        Xrm.Page.ui.controls.get("IFRAME_ACTIVITY_HISTORY").setSrc(vURL);
        var vURLB = "http://aac.phoenixcoyotes.com/coyoteshockeyllc/userdefined/areas.aspx?oId=" + vCustomerID + "&oType=2&pagemode=iframe&security=852023&tabSet=areaActivities";
 //var vURLB = "http://coyotescrm/coyoteshockeyllc/userdefined/areas.aspx?oId=" + vCustomerID + "&oType=2&pagemode=iframe&security=852023&tabSet=areaActivities";

        Xrm.Page.ui.controls.get("IFRAME_ACTIVITIES_OPEN").setSrc(vURLB);
    }
};

尝试使用:

Xrm.Page.getControl("IFRAME_ACTIVITY_HISTORY").setSrc(vURL);

https://msdn.microsoft.com/en-us/library/51828fe3-f6ff-4f97-80ed-b06b3a354955#BKMK_setSrc