Get Nearest Children Example (C#)

This example shows how get the nearest child external references in an unopened drawing.

//--------------------------------------------------------------
// Preconditions:
// 1. Create a C# Windows console project.
// 2. Copy and paste this example into the IDE.
// 3. Add a reference to:
//    install_dir\APISDK\tlb\DraftSight.Interop.dsAutomation.dll.
// 4. Replace the first parameter of GetImmediateChildReferences
//    with your local drawing file that contains an external reference.
// 5. Start DraftSight with an empty drawing.
// 6. Start debugging the project.
//
// Postconditions: See the DraftSight Command Window for output
// messages and all of your drawing's immediate child references.
//----------------------------------------------------------------

using DraftSight.Interop.dsAutomation;

using System;

using System.Runtime.InteropServices;

using System.Windows.Forms;

namespace GetChildReferences_CSharp

{

    class Program

    {

        static void Main(string[] args)

        { 

            DraftSight.Interop.dsAutomation.Application dsApp;

            DraftSight.Interop.dsAutomation.ReferenceManager dsRefMgr;

            DraftSight.Interop.dsAutomation.ImageDefinition dsImageDefinition;

            DraftSight.Interop.dsAutomation.PdfDefinition dsPdfDefinition;

            DraftSight.Interop.dsAutomation.DgnDefinition dsDgnDefinition;

            object extDefTypeArray;

            object extDefArray;

            CommandMessage commandline;

            string imageFileName;

            // Connect to DraftSight

            dsApp = (DraftSight.Interop.dsAutomation.Application)Marshal.GetActiveObject("DraftSight.Application");

            // Abort any command currently running in DraftSight

            // to avoid nested commands

            dsApp.AbortRunningCommand();

            commandline = dsApp.GetCommandMessage();
            dsRefMgr = dsApp.GetReferenceManager();

            // Get all nearest child references of the specified document

            dsRefMgr.GetImmediateChildReferences("C:\\temp\\dwgWithRef.dwg", out extDefTypeArray, out extDefArray);

            object[] defArray;

            int[] defTypeArray;

            defTypeArray = (int[])extDefTypeArray;

            defArray = (object[])extDefArray;

            dsObjectType_e objecttype;

            object objectdefinition;

            int i;

                for (i = 0; i < defArray.Length; i++)

                {

                    objecttype = (dsObjectType_e)defTypeArray[i];

                    objectdefinition = defArray[i];

                    if ((objecttype == dsObjectType_e.dsImageDefinitionType))

                    {

                        dsImageDefinition = (ImageDefinition)objectdefinition;

                        commandline.PrintLine("Path: " + dsImageDefinition.GetPath());

                        commandline.PrintLine("Found In Path: " + dsImageDefinition.GetFoundInPath());

                    }

                    else if ((objecttype == dsObjectType_e.dsPdfDefinitionType))

                    {

                        dsPdfDefinition = (PdfDefinition)objectdefinition;

                        commandline.PrintLine("Path: " + dsPdfDefinition.GetPath());

                        commandline.PrintLine("Found In Path: " + dsPdfDefinition.GetFoundInPath());

                    }

                    else if ((objecttype == dsObjectType_e.dsDgnDefinitionType))

                    {

                        dsDgnDefinition = (DgnDefinition)objectdefinition;

                        commandline.PrintLine("Path: " + dsDgnDefinition.GetPath());

                        commandline.PrintLine("Found In Path: " + dsDgnDefinition.GetFoundInPath());

                    }

                }

             }

        }

    }