How to detect if family is line based in project document

[NZhouSNYLF]

Solved: How to detect if family is line based in family document - Autodesk Community - Revit Produc...

[Mohamed_Arshad · Accepted solution]

HI @NZhouSNYLF 

Revit API Family Hierarchy --> Family-->FamilySymbol-->FamilyInstance.

To Create a Family Instance, need to get the FamilySymbol. Kindly refer the below code for additional reference.

Reference Code:

            //01. Filter the Family Symbol which you want to place
            FamilySymbol symbol = new FilteredElementCollector(doc)
                .OfClass(typeof(FamilySymbol))
                .OfCategory(BuiltInCategory.OST_DetailComponents)
                .Where(x => x.Name.Equals("Demo"))
                .First() as FamilySymbol;

            //02. Get Family of the Family Symbol
            Family fam = symbol.Family;

            //03. Get the Placement Type
            FamilyPlacementType placementType = fam.FamilyPlacementType;


            switch (placementType)
            {
                case FamilyPlacementType.Adaptive:

                    //Write your Instance Creation Logic

                    break;

                case FamilyPlacementType.CurveBased:

                    //Write your Instance Creation Logic

                    break;

                case FamilyPlacementType.WorkPlaneBased:

                    //Write your Instance Creation Logic

                    break;

                default:

                    break;
            }

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Hope this will Helps 🙂

[NZhouSNYLF]

thanks Mohamed, good to know that placement type can be retrieved directly from family instead of family document!