Wednesday, 21 August 2013

How to open the existing AutoCAD drawing using VB.NET /C# windows forms Or VB.NET / C# - Open an Existing Dwg from Stand-Alone exe

                               Hi friends, in this article I will explain about how to open the existing AutoCAD drawing using VB.NET /C# windows forms or VB.NET / C# - Open an Existing Dwg from Stand-Alone exe
Lets I will explain about Open A Drawing in VB.NET /C# as shown below.
Take one new project (File—New—Project—give a name to form).A form will be made.
We have to add the below references to project. I explained in the previous article How to add references for AutoCAD ,How to call LispProgram from VB.NET ? || Calling AutoCAD commands from .NET.
1. AutoCAD 2007/2010 Type Library
2. AutoCAD/ObjectDBX Common 17.0/18.0 type Library from COM tab.
3. acdbmgd.dll
4. acmgd.dll
And double click on the form and right the following code.
Public Class Form1
    Public AcadApp As Autodesk.AutoCAD.Interop.AcadApplication
    Public AcadDoc As Autodesk.AutoCAD.Interop.AcadDocuments
  Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As system.EventArgs)   Handles MyBase.Load
         Dim AcadApp, NewFile As Object
        On Error Resume Next
        AcadApp = GetObject(, "autocad.Application")
        If Err.Number <> 0 Then
            AcadApp = CreateObject("autocad.Application")
        End If

        AcadApp.Visible = True
        NewFile = AcadApp.Documents.Open("c:\test.dwg", False)
        Dim command As String = "(load ""D:/test.vlx"")"
        NewFile.SendCommand(command & "(C:test) ")
    End Sub
End Class

In C#:
using Microsoft.VisualBasic;
using System;
using System.Collections;
using System.Collections.Generic;
using System.Data;
using System.Diagnostics;
Public Class Form1
      public Autodesk.AutoCAD.Interop.AcadApplication AcadApp;
      public Autodesk.AutoCAD.Interop.AcadDocuments AcadDoc;
      private void Form1_Load(System.Object sender, System.EventArgs e)
            object AcadApp = null;
            object NewFile = null;
             // ERROR: Not supported in C#: OnErrorStatement

            AcadApp = Interaction.GetObject(, "autocad.Application");
            if (Err().Number != 0) {
                  AcadApp = Interaction.CreateObject("autocad.Application");

            AcadApp.Visible = true;
            NewFile = AcadApp.Documents.Open("c:\\test.dwg", false);
            string command = "(load \"D:/test.vlx\")";
            NewFile.SendCommand(command + "(C:test) ");
    Public Form1()
            Load += Form1_Load;

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