Revit Addin Commands to create Pipe and FlexPipe

CommandCreateConduit.cs

using Autodesk.Revit.Attributes;
using Autodesk.Revit.DB;
using Autodesk.Revit.DB.Electrical;
using Autodesk.Revit.UI;
using System;
using System.ComponentModel;

namespace RevitAddin.Youtube.Revit.Commands
{
    [DisplayName("Create Conduit")]
    [Designer("/UIFrameworkRes;component/ribbon/images/conduit_draw.ico")]
    [Transaction(TransactionMode.Manual)]
    public class CommandCreateConduit : IExternalCommand
    {
        public Result Execute(ExternalCommandData commandData, ref string message, ElementSet elementSet)
        {
            UIApplication uiapp = commandData.Application;
            Document document = uiapp.ActiveUIDocument.Document;

            var levels = new FilteredElementCollector(document)
                .OfClass(typeof(Level));
            var levelId = levels.FirstElementId();

            var conduitTypes = new FilteredElementCollector(document)
                .OfClass(typeof(ConduitType));
            var conduitTypeId = conduitTypes.FirstElementId();

            using (Transaction transaction = new Transaction(document))
            {
                transaction.Start("Create Conduit");
                Conduit.Create(document, conduitTypeId, XYZ.Zero, 10 * XYZ.BasisZ, levelId);
                transaction.Commit();
            }

            return Result.Succeeded;
        }
    }
}

CommandCreatePipe.cs

using Autodesk.Revit.Attributes;
using Autodesk.Revit.DB;
using Autodesk.Revit.DB.Plumbing;
using Autodesk.Revit.UI;
using System.Collections.Generic;
using System.ComponentModel;

namespace RevitAddin.Commands
{
    [DisplayName("Create Pipe")]
    [Designer("/UIFrameworkRes;component/ribbon/images/pipe_create.ico")]
    [Transaction(TransactionMode.Manual)]
    public class CommandCreatePipe : IExternalCommand
    {
        public Result Execute(ExternalCommandData commandData, ref string message, ElementSet elementSet)
        {
            UIApplication uiapp = commandData.Application;
            Document document = uiapp.ActiveUIDocument.Document;

            var levels = new FilteredElementCollector(document)
                .OfClass(typeof(Level));
            var levelId = levels.FirstElementId();

            var pipeTypes = new FilteredElementCollector(document)
                .OfClass(typeof(PipeType));
            var pipeTypeId = pipeTypes.FirstElementId();

            var pipeSystemTypes = new FilteredElementCollector(document)
                .OfClass(typeof(PipingSystemType));
            var pipeSystemTypeId = pipeSystemTypes.FirstElementId();

            using (Transaction transaction = new Transaction(document))
            {
                transaction.Start("Create Pipe");
                Pipe.Create(document, pipeSystemTypeId, pipeTypeId, levelId, XYZ.Zero, 10 * XYZ.BasisX);
                transaction.Commit();
            }

            return Result.Succeeded;
        }
    }

    [DisplayName("Create FlexPipe")]
    [Designer("/UIFrameworkRes;component/ribbon/images/flex_pipe_create.ico")]
    [Transaction(TransactionMode.Manual)]
    public class CommandCreateFlexPipe : IExternalCommand
    {
        public Result Execute(ExternalCommandData commandData, ref string message, ElementSet elementSet)
        {
            UIApplication uiapp = commandData.Application;
            Document document = uiapp.ActiveUIDocument.Document;

            var levels = new FilteredElementCollector(document)
                .OfClass(typeof(Level));
            var levelId = levels.FirstElementId();

            var pipeTypes = new FilteredElementCollector(document)
                .OfClass(typeof(FlexPipeType));
            var pipeTypeId = pipeTypes.FirstElementId();

            var pipeSystemTypes = new FilteredElementCollector(document)
                .OfClass(typeof(PipingSystemType));
            var pipeSystemTypeId = pipeSystemTypes.FirstElementId();

            using (Transaction transaction = new Transaction(document))
            {
                transaction.Start("Create FlexPipe");
                XYZ startTangent = XYZ.BasisY;
                XYZ endTangent = XYZ.BasisY;
                var points = new List<XYZ>() { XYZ.Zero, 5 * XYZ.BasisY + XYZ.BasisZ, 10 * XYZ.BasisY };
                FlexPipe.Create(document, pipeSystemTypeId, pipeTypeId, levelId, startTangent, endTangent, points);
                transaction.Commit();
            }

            return Result.Succeeded;
        }
    }

}

This Command works with: https://github.com/ricaun-io/RevitAddin.CommandLoader