Pick alignment tool

Description

This is a custom interactive tool for selecting an alignment from UI.
The user is prompted to select an alignment.
The PickAlignmentTool class which extends DgnElementSetTool which handles different events to interact with UI, the PickAlignmentTool class overrides the events here in this tool.

Remarks

This sample code is a part of ManagedSDKExample which you get with SDK installation under "examples" section in SDK installation directory.
If you encounter any error while using DgnElementSetTool class, make sure to add a reference to Bentley.DgnDisplayNet.dll by selecting Project > Add Reference or change the projects.csproj file to add reference to this dll.
The dll location will be "C:\Program Files\Bentley\OpenRoads Designer CE 10.11\OpenRoadsDesigner\Bentley.DgnDisplayNet.dll".

Source Code


//Required References
using Bentley.DgnPlatformNET;
using Bentley.DgnPlatformNET.Elements;
using Bentley.CifNET.GeometryModel.SDK;
using Bentley.CifNET.SDK;

namespace ManagedSDKExample
{
    class PickAlignmentTool : DgnElementSetTool
    {
        ConsensusConnection m_con;

        public PickAlignmentTool() : base()
        {
        }

        protected override void OnRestartTool()
        {
            InstallNewInstance();
        }

        protected override void ExitTool()
        {
            if (m_con != null)
            {
                m_con.Close();
                m_con.Dispose();
            }
            m_con = null;
            base.ExitTool();
        }


        protected override void OnPostInstall()
        {
            base.BeginPickElements();
            Bentley.DgnPlatformNET.AccuSnap.LocateEnabled = true;
            Bentley.DgnPlatformNET.AccuSnap.SnapEnabled = true;
            m_con = Bentley.CifNET.SDK.Edit.ConsensusConnectionEdit.GetActive();
            if (m_con == null)
                return;

            NotificationManager.OutputPrompt("Select an alignment to report.");
            base.OnPostInstall();
        }

	//selects an alignment
        protected override bool OnDataButton(Bentley.DgnPlatformNET.DgnButtonEvent ev)
        {
            Bentley.DgnPlatformNET.HitPath hitPath = DoLocate(ev, true, 0);
            if (hitPath == null)
                return false;

            Element el = hitPath.GetCursorElement();
            if (el == null)
                return false;

            Alignment al = (el.ParentElement == null) ? Alignment.CreateFromElement(m_con, el) : Alignment.CreateFromElement(m_con, el.ParentElement);

            if (al == null)
                return false;

            return true;
        }

        public override Bentley.DgnPlatformNET.StatusInt OnElementModify(Bentley.DgnPlatformNET.Elements.Element element)
        {
            return Bentley.DgnPlatformNET.StatusInt.Error;
        }

        protected override bool OnResetButton(Bentley.DgnPlatformNET.DgnButtonEvent ev)
        {
            ExitTool();
            return true;
        }


        public static void InstallNewInstance()
        {
            PickAlignmentTool tool = new PickAlignmentTool();
            tool.InstallTool();
        }
    }
}