How to reaad Input Fields From Custom Page in Dynamics CRM?

Yes, there is a way to read the values of fields using the FormContext API in Dynamics 365 Power Apps. The Xrm.Page object has been deprecated in Dynamics 365 v9.x, and it’s recommended to use the FormContext object instead1.

Here’s an example of how you can use FormContext to read field values:

function displayName(executionContext) {
    var formContext = executionContext.getFormContext(); // get formContext
    var firstName = formContext.getAttribute("firstname").getValue();
    var lastName = formContext.getAttribute("lastname").getValue();
    console.log(firstName + " " + lastName);
}

 

In this example, executionContext.getFormContext() is used to retrieve the formContext object. Then, formContext.getAttribute("fieldname").getValue() is used to get the value of a field1.

For a web resource in Dynamics 365 Power Apps, you can use getContentWindow in the Client API. Here’s an example:

 

function form_onload(executionContext) {
    var formContext = executionContext.getFormContext();
    var wrControl = formContext.getControl("WebResource_MyWebResource");
    if (wrControl) {
        wrControl.getContentWindow().then(function (contentWindow) {
            contentWindow.setClientApiContext(Xrm, formContext);
        });
    }
}

 

In this example, formContext.getControl("WebResource_MyWebResource") is used to get a reference to the web resource control. Then, wrControl.getContentWindow() is used to get a reference to the content window of the web resource. The setClientApiContext(Xrm, formContext) function is then called on the content window2.

Please replace "firstname", "lastname", and "WebResource_MyWebResource" with your actual field names and web resource control name.

Remember to select the “Pass execution context as first parameter” option in the Handler Properties dialog while defining your event handlers to use the formContext object1.

Thanks