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Select All in Part, Assembly, or Drawing (C#)

This example shows how to select everything in the graphics area of a part or assembly document or in the sheet of a drawing document, as if you box-selected everything in the graphics area or the sheet.

//--------------------------------------------------------------------------
// Preconditions:
// 1. Verify that the part, assembly, and drawing documents opened by the macro
//    exist.
// 2. Open the Immediate window.
//
// Postconditions:
// 1. Examine:
//    * Sheet to verify that all of the entities in the drawing
//      are selected.
//    * Immediate window to see how many entities are selected.
// 2. Click Window > bolt-assembly.sldasm to switch to the assembly
//    document.
// 3. Examine:
//    * Graphics area to verify that the all of the components
//      in the assembly are selected.
//    * Immediate window to see how many components are selected.
// 4. Click Window > bolt.sldprt to switch to the part document.
// 5. Examine:
//    * Graphics area to verify that the all of the edges
//      in the part are selected.
//    * Immediate window to see how many edges are selected.
//
// NOTE: Because these documents are used elsewhere, do not save changes.
//--------------------------------------------------------------------------

using SolidWorks.Interop.sldworks;
using SolidWorks.Interop.swconst;
using System;
using System.Diagnostics;

namespace SelectAllModelDocExtensionCSharp.csproj
{
    
partial class SolidWorksMacro
    {

        
public void Main()
        {
            ModelDoc2 swModel;
            ModelDocExtension swModelDocExt;
            SelectionMgr swSelMgr;
            
string partFile = null;
            
string assemblyFile = null;
            
string drawingFile = null;
            
int errors = 0;
            
int warnings = 0;

            
// Open a part document and select all edges in the part
            partFile = "C:\\Users\\Public\\Documents\\SOLIDWORKS\\SOLIDWORKS 2017\\introsw\\bolt.sldprt";
            swModel = (ModelDoc2)swApp.OpenDoc6(partFile, (
int)swDocumentTypes_e.swDocPART, (int)swOpenDocOptions_e.swOpenDocOptions_Silent, "", ref errors, ref warnings);
            swModelDocExt = (ModelDocExtension)swModel.Extension;
            swSelMgr = (SelectionMgr)swModel.SelectionManager;
            
//Select all edges in part
            SelectAllinDocument(swModel, swModelDocExt, swSelMgr);

            
// Open an assembly document and select all components in the assembly
            assemblyFile = "C:\\Users\\Public\\Documents\\SOLIDWORKS\\SOLIDWORKS 2017\\introsw\\bolt-assembly.sldasm";
            swModel = (ModelDoc2)swApp.OpenDoc6(assemblyFile, (
int)swDocumentTypes_e.swDocASSEMBLY, (int)swOpenDocOptions_e.swOpenDocOptions_Silent, "", ref errors, ref warnings);
            swModelDocExt = (ModelDocExtension)swModel.Extension;
            swSelMgr = (SelectionMgr)swModel.SelectionManager;
            
//Select all components in assembly
            SelectAllinDocument(swModel, swModelDocExt, swSelMgr);

            
// Open a drawing document and select all entities in the drawing
            drawingFile = "C:\\Users\\Public\\Documents\\SOLIDWORKS\\SOLIDWORKS 2017\\introsw\\bolt-assembly.slddrw";
            swModel = (ModelDoc2)swApp.OpenDoc6(drawingFile, (
int)swDocumentTypes_e.swDocDRAWING, (int)swOpenDocOptions_e.swOpenDocOptions_Silent, "", ref errors, ref warnings);
            swModelDocExt = (ModelDocExtension)swModel.Extension;
            swSelMgr = (SelectionMgr)swModel.SelectionManager;
            
//Select all entities in drawing
            SelectAllinDocument(swModel, swModelDocExt, swSelMgr);

        }

        
public void SelectAllinDocument(ModelDoc2 swModel, ModelDocExtension swModelDocExt, SelectionMgr swSelMgr)
        {
            
int selCount;

            
// Select all edges in a part, all components in an assembly,
            // or all entities in a drawing
            swModelDocExt.SelectAll();

            
// Get and print the number of selections
            selCount = 0;
            selCount = swSelMgr.GetSelectedObjectCount2(-1);

            
switch (swModel.GetType())
            {
                
case (int)swDocumentTypes_e.swDocPART:
                    
Debug.Print("Number of edges selected in part          = " + selCount);
                    
break;
                
case (int)swDocumentTypes_e.swDocASSEMBLY:
                    
Debug.Print("Number of components selected in assembly = " + selCount);
                    
break;
                
case (int)swDocumentTypes_e.swDocDRAWING:
                    
Debug.Print("Number of entities selected in drawing    = " + selCount);
                    
break;
                
default:
                    
Debug.Print("Unknown type of document.");
                    
break;
            }

        }

        
/// <summary>
        /// The SldWorks swApp variable is pre-assigned for you.
        /// </summary>
        public SldWorks swApp;

    }
}



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