topic Re: ErroThere is no argument given that corresponds to the required formal param in Revit API Forum

ErroThere is no argument given that corresponds to the required formal parameter

Anonymous — Fri, 25 Aug 2017 04:13:35 GMT

Hi guys,

I am very close to finishing a plugin I have been working on except for one error message.

Error CS7036 There is no argument given that corresponds to the required formal parameter 'hostDoor' of 'FamilyInstanceExtensions.GetOptimalTagLocation(Wall, FamilyInstance, GeometryElement, XYZ)' DoorTagProject C:\Users\dobbs\Desktop\test - Copy\DoorTagProject\DoorTagProject\DoorTag\IndependentTagExtensions.cs 33 Active

The class it is referring to is here

using Autodesk.Revit.DB;
using DoorTag;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace DoorTag
{
    public static class IndependentTagExtensions 
     {
        // check if the doortag is attached to a valid door 
        public static bool IsAttachedToValidDoor(this IndependentTag tag, bool IsValidDoor)
        {
            // call the GetTaggedLocalElement method to get the host Door
            var hostDoor = (FamilyInstance)tag.GetTaggedLocalElement();
            if (hostDoor == null)
            {
                return false;
            }
            // if there is a door, call the IsValidDoor method to check if it is a valid door
            bool IsAttachedToValidDoor = IsValidDoor;

            return IsAttachedToValidDoor;
        }
               

        // move the tag to the right position 
        public static void MoveToCorrectPosition(this IndependentTag tag, FamilyInstance hostDoor, Wall hostWall)
        {
            // Find the optimal location for the door tag to be placed based on the hostDoor
            XYZ newPlace = hostWall.GetOptimalTagLocation();

            // find the tags old place as a location point
            LocationPoint tagLocationPoint = tag.Location as LocationPoint;

            //convert that to a XYZ value 
            XYZ oldPlace = tagLocationPoint.Point;

            // create a vector between old and new
            XYZ vectorFromOldToNew = newPlace - oldPlace;

            // Place the tag at the new place
            ElementTransformUtils.MoveElement(tag.Document, tag.Id, vectorFromOldToNew);
        }

        // Get tag location point 
        public static Autodesk.Revit.DB.LocationPoint GetTagLocationPoint(this IndependentTag tag)
        {
            // Get the tah location point as a locationpoint not a XYZ - you can convert this later. 
            LocationPoint thetagLocationPoint = tag.Location as LocationPoint;
            return thetagLocationPoint;
        }
    }
}

Does anyone know why this is happening?

I made a technology architecture drawing to help explain how I am passing parameters.

I have attached my project as well just in case that wasn't enough information

Re: ErroThere is no argument given that corresponds to the required formal param

matthew_taylor — Fri, 25 Aug 2017 12:42:50 GMT

Hi @Anonymous,

The extension that is causing an issue has the signature:

public static XYZ GetOptimalTagLocation(this FamilyInstanceExtensions hostDoor)

So, you're passing in FamilyInstanceExtensions presumably instead of FamilyInstance.

That's not the only problem though, as doorSwingArc is not declared, and the passed in value of hostDoor is not used at all.

Also, you're trying to create a new point with OptimalTagLocationPoint, but you need to use new XYZ(....).

Also, you refer to wallOffSetPoint, though it is not declared.

BUT, you're also using a familyInstance extension (GetOptimalTagLocation) with a Wall. A Wall instance cannot be a FamilyInstance.

So, a fair few issues. I didn't delve further. Most of these issues should be picked up by the IDE. If you're private or in a small company, you'd do well to use something like Visual Studio Community Edition https://www.visualstudio.com/vs/community/.

Re: ErroThere is no argument given that corresponds to the required formal param

Anonymous — Thu, 31 Aug 2017 07:32:12 GMT

I went through and followed the problem like you suggested and ironed out a lot of the problems (there were a lot!).

There was just one last problem that I cannot get.

My geometry test for an 'Arc' is not working (where I test if a geometry in a list of geometries is an Arc. see below.

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Diagnostics;
using System.IO;
using System.Reflection;
using Autodesk.Revit.Attributes;
using Autodesk.Revit.DB;
using Autodesk.Revit.UI;
using Autodesk.Revit.DB.Architecture;
using Autodesk.Revit.UI.Selection;
using Autodesk.Revit.ApplicationServices;
using DoorTag;

namespace DoorTag
{
    internal static class DoorArcExtensions
    {
        // get list of doorSwingarcs
        public static List<GeometryElement> GetListOfDoorArcs(this IndependentTag tag)
        {
            FamilyInstance door = IndependentTagExtensions.GetTaggedLocalElement(tag);
            // have some options 
            Autodesk.Revit.DB.Options opt = new Options();

            // Create a new empty list of arcs
            List<GeometryElement> ListOfDoorArcs = new List<GeometryElement>();

            // Get the list of the geometry objects 
            Autodesk.Revit.DB.GeometryElement geomElem = door.get_Geometry(opt);

            // for each geometry element that is an arc, add that to the list of door arcs
            foreach (GeometryElement geomObj in geomElem)
            {

                if (geomElem == Arc)
                {
                    ListOfDoorArcs.Add(geomElem);
                }

                List<GeometryElement> tempList = ListOfDoorArcs;

                GeometryElement doorArc = tempList[0];

                
            }
            return ListOfDoorArcs;
        }

        // get list of doorSwingarcs
        public static GeometryElement GetDoorArc(this IndependentTag tag)
        {
            FamilyInstance door = IndependentTagExtensions.GetTaggedLocalElement(tag);
            List<GeometryElement> tempList = DoorArcExtensions.GetListOfDoorArcs(tag);
            GeometryElement doorArc = tempList[0];
                // count the number of items in the list
                int countOfDoorArcs = tempList.Count;
                if (countOfDoorArcs <= 1)
                {
                    if (countOfDoorArcs == 0) // it must be a sliding door or panel
                    {
                        doorArc = tempList[0]; // do nothing 
                    }
                    else // it must be a single door
                    {
                        doorArc = tempList[0];
                    }
                    return doorArc;
                }
                // Test for double or leaf and a half
                else
                {
                     
                    doorArc = tempList[0];

                }
            return doorArc;
        }
    }
}

The error I am getting is:

"Arc is a type which is not valid in the current context". do I need to invoke an initialization class that lets me access Revit geometry types?

Any thoughts are always appreciated.

Kind regards

Re: ErroThere is no argument given that corresponds to the required formal param

matthew_taylor — Mon, 04 Sep 2017 08:38:10 GMT

Hi @Anonymous,

I'm glad you are making progress.

You are asking whether a GeometryElement object is equal to the type 'Arc'. You're trying to compare an instance of an object to a definition of an object (in simplistic terms).

Try this:

If (geomElem Is Arc)
{
....

If that still gives you grief, specify the full namespace for 'Arc'.