How to open new AutoCAD drawing using VB.NET or C#? Or How to Connect with AutoCAD and Open A Drawing in VB.NET /C#

                                          Hi Friends, in this article I will explain about How to open new drawing using VB.NET or C#? Or How to Connect with AutoCAD and Open A Drawing in VB.NET /C# .

In previous article I already explained about How to add references for AutoCAD ,How to call Lisp Program from VB.NET ? || Calling AutoCAD commands from .NET.

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 Lisp Program 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

Double click on the form and imports or using the below namespaces.

Imports Autodesk.AutoCAD.Interop.AcadDocumentClass Imports Autodesk.AutoCAD.Interop.Common

And write the below code in the Form1 Class

Public AcadApp As Autodesk.AutoCAD.Interop.AcadApplication Public AcadDoc As Autodesk.AutoCAD.Interop.AcadDocuments

And write the below code in Form1_Load

AcadApp = New Autodesk.AutoCAD.Interop.AcadApplication AcadApp.Visible = True

And save the form and Run. When you run the project then automatically form and AutoCAD new drawing will open simultaneously.

The complete code is as follows.

In VB.NET:

Imports Autodesk.AutoCAD.Interop.AcadDocumentClass Imports Autodesk.AutoCAD.Interop.Common 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         AcadApp = New Autodesk.AutoCAD.Interop.AcadApplication         AcadApp.Visible = True End Sub End Class

IN C#:

using Microsoft.VisualBasic; using System; using System.Collections; using System.Collections.Generic; using System.Data; using System.Diagnostics; using Autodesk.AutoCAD.Interop.AcadDocumentClass; using Autodesk.AutoCAD.Interop.Common; 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)                 {                                 AcadApp = new Autodesk.AutoCAD.Interop.AcadApplication();                                 AcadApp.Visible = true;                 }     Public Form1()                 {                                 Load += Form1_Load;                 } }

I will explain how to open existing AutoCAD drawing using VB.NET/C# in the next article.

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