Update Element location based on parameter value

[sensiblehira]

I have created X,Y,Z parameters for my family Instances and I want to update the location of my elements if values of my parameters are changed (without having to click anywhere else).

Is there a way to do this?

I am trying to trigger an event from OnStartUp, but since it is a custom parameter I can use GetChangeTypeParameter

GetChangeTypeAny is not responding to the changes in my case

I do not want to call the trigger for externalcommand

(the end user doesn't want to click anywhere else after modifying the parameter)

[scgq425]

Hi @sensiblehira :

is like a monitor document changed issue , if the element changed or modify-location , u can use the interface `DocumentChangedEventArgs`  to get document changed , and then monitor the target element which need to update location-paramaters.

 /// <summary>
        /// events about revit document changed
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        void AppChangedDocumented(object sender, Autodesk.Revit.DB.Events.DocumentChangedEventArgs e)
        {
            var doc = e.GetDocument();
            try
            {
                var addElems = e.GetAddedElementIds();
            }
            catch (NullReferenceException)
            {

            }


            try
            {
                var modifyElems = e.GetModifiedElementIds();
            }
            catch (Exception)
            {

            }

            try
            {
                var deletedElems = e.GetDeletedElementIds();
                foreach (var deletedElem in deletedElems)
                {

                    var deleted = new DeletedJsonStruct()
                    {
                        ElementId = deletedElem.ToString(),
                        Locate = "(1,2,3),(3,4,5)",
                        MatchName = "Deleted"
                    };

            }
            catch (NullReferenceException)
            {

            }

        }

[sensiblehira · Accepted solution]

So here is how I solved my problem:

I was creating my Parameters from my code so

1- I firstly shifted the creation of my project parameters to the OnDocumentOpened Event

2- I returned the GUID of the parameter being created as the return type of my parameter creation method

3- using the Guid i got the parameter and its element id

4- Registered my updater in OnDocumentOpened Event (since I cannot create parameters in OnStartup I cannot register the updater without creating the parameter first)