Unable to get reference to AutoCAD application. Using vb.NET.

gdimitro6BBER — Sun, 21 Apr 2024 15:13:59 GMT

Good evening. I am a newbie when it comes to coding in vb.NET in conjunction with AutoCAD.

I have loaded the COM files for AutoCAD.

I'm trying to reference AutoCAD when my executable starts and bind it to the CADApp variable and when I press the btn1 button AutoCAD should come to the foreground for the user to pick a point manually.

Here is a snippet of my code

Imports Microsoft.VisualBasic.Interaction Public Class FormMain Private CADApp As Object 'AutoCAD application object Private Editor As Object 'AutoCAD editor object Private CADDoc As Object 'Autocad current Document Dim moSpace As Object Dim UtilObj As Object Private Sub FormMain_Load(sender As Object, e As EventArgs) Handles MyBase.Load Try 'to connect to the AutoCAD application CADApp = Interaction.GetObject(, "AutoCAD.Application") If CADApp Is Nothing Then MessageBox.Show("Failed to get reference to AutoCAD application") End If Catch ex As Exception MsgBox("AutoCAD not Running...trying to open") Try CADApp = CreateObject("AutoCAD.Application") 'showMessageWhenConnectedToACAD() Catch ex1 As Exception MsgBox("Cannot connect to AuToCAD") End Try End Try CADApp.Visible = True CADDoc = CADApp.ActiveDocument moSpace = CADDoc.ModelSpace UtilObj = CADDoc.Utility End Sub Private Sub btn1_Click(sender As Object, e As EventArgs) Handles btn1.Click ' Optional: Bring AutoCAD window to the front CADApp.Visible = True CADDoc = CADApp.ActiveDocument End Sub End Class

Unfortunately every time I run the code it always gets stuck in line 13, meaning the program is unable to reference AutoCAD. I don't know what I'm doing wrong. Can anyone help with this?

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Unable to get reference to AutoCAD application. Using vb.NET.