C#•2y ago

❔ different variable type depending on condition of IF statement

Hi there, how would I go about having a different type on a variable with the same name, for later use? This is required for use in my code later on within the Autodesk RevitAPI

var elmFilter = null;
if (FilterSelected == 0)
{
   Helpers.ElementFilterTerminals elmFilter = new Helpers.ElementFilterTerminals();
}
if (FilterSelected == 1)
{
   Helpers.ElementFilterDuctwork elmFilter = new Helpers.ElementFilterDuctwork();
}

//later on...

pickedRef = sel.PickObject(ObjectType.PointOnElement, elmFilter, "Pick the elements to be updated.");

var elmFilter = null;
if (FilterSelected == 0)
{
   Helpers.ElementFilterTerminals elmFilter = new Helpers.ElementFilterTerminals();
}
if (FilterSelected == 1)
{
   Helpers.ElementFilterDuctwork elmFilter = new Helpers.ElementFilterDuctwork();
}

//later on...

pickedRef = sel.PickObject(ObjectType.PointOnElement, elmFilter, "Pick the elements to be updated.");

in my helpers class:

        public class ElementFilterTerminals : ISelectionFilter
        {
            public bool AllowElement(Element e)
            {
                //TO-DO: Add Magicad Family for end caps to this.
                return (e.Category.Id.IntegerValue.Equals(
                  (int)BuiltInCategory.OST_DuctTerminal)) ||
                (e.Category.Id.IntegerValue.Equals(
                  (int)BuiltInCategory.OST_MechanicalEquipment));
            }
            public bool AllowReference(Autodesk.Revit.DB.Reference r, XYZ p)
            {

                return (r.ElementReferenceType == ElementReferenceType.REFERENCE_TYPE_SURFACE);
            }
        }

        public class ElementFilterDuctwork : ISelectionFilter
        {
            public bool AllowElement(Element e)
            {
                return (e.Category.Id.IntegerValue.Equals(
                  (int)BuiltInCategory.OST_DuctSystem)) ||
                (e.Category.Id.IntegerValue.Equals(
                  (int)BuiltInCategory.OST_DuctFitting));
            }
            public bool AllowReference(Autodesk.Revit.DB.Reference r, XYZ p)
            {

                return (r.ElementReferenceType == ElementReferenceType.REFERENCE_TYPE_SURFACE);
            }
        }

        public class ElementFilterTerminals : ISelectionFilter
        {
            public bool AllowElement(Element e)
            {
                //TO-DO: Add Magicad Family for end caps to this.
                return (e.Category.Id.IntegerValue.Equals(
                  (int)BuiltInCategory.OST_DuctTerminal)) ||
                (e.Category.Id.IntegerValue.Equals(
                  (int)BuiltInCategory.OST_MechanicalEquipment));
            }
            public bool AllowReference(Autodesk.Revit.DB.Reference r, XYZ p)
            {

                return (r.ElementReferenceType == ElementReferenceType.REFERENCE_TYPE_SURFACE);
            }
        }

        public class ElementFilterDuctwork : ISelectionFilter
        {
            public bool AllowElement(Element e)
            {
                return (e.Category.Id.IntegerValue.Equals(
                  (int)BuiltInCategory.OST_DuctSystem)) ||
                (e.Category.Id.IntegerValue.Equals(
                  (int)BuiltInCategory.OST_DuctFitting));
            }
            public bool AllowReference(Autodesk.Revit.DB.Reference r, XYZ p)
            {

                return (r.ElementReferenceType == ElementReferenceType.REFERENCE_TYPE_SURFACE);
            }
        }

7 Replies

Anton•2y ago

use the common type, ISelectionFilter if selection works with that interface, it will work if it works via overloads, you can't

Curious•2y ago

Curious•2y ago

Unless I misunderstood what you meant for me to do..?

Anton•2y ago

kinda assign to the variable above you're declaring new ones with the same name

Curious•2y ago

Ah Yes I see, perfect thank you!

ISelectionFilter elmFilter = null;
if (FilterSelected == 0)
{
    elmFilter = new Helpers.ElementFilterTerminals();
}
if (FilterSelected == 1)
{
    elmFilter = new Helpers.ElementFilterDuctwork();
}

ISelectionFilter elmFilter = null;
if (FilterSelected == 0)
{
    elmFilter = new Helpers.ElementFilterTerminals();
}
if (FilterSelected == 1)
{
    elmFilter = new Helpers.ElementFilterDuctwork();
}

Accord•2y ago

Was this issue resolved? If so, run /close - otherwise I will mark this as stale and this post will be archived until there is new activity.

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❔ different variable type depending on condition of IF statement