VB.NET Tutorial - Create a DLL / Class Library (Visual Basic .NET)

In this Visual Basic .NET tutorial I will be showing you how to create and use your own DLL (Dynamic Link Library) in your VB.NET projects.

We will create a DLL file for managing form graphics and use that DLL to draw images to forms and form controls.

TUTORIAL FEATURES:
DLL - Library, Namespace, Class
Graphics - System.Drawing, Image
Form Controls - Button, PictureBox
Class - Image Manager

[meisamrasouli]

Thank you for this nice and basic tutorial on Visual Basic.NET dll files.

[henryphan]

Beautiful tutorial. It helps me understand a lot about DLL. Thanks.

[mykeruiz]

This is a very interesting tutorial. It helps a lot for a beginner like me. Thank you for uploading tutorials like this.

[aequabit]

Totally love you, apart from the coding stuff. Keep it up, you're one of the rare, good guys on YouTube.

[Fehera]

31:33 LOOOL Where is that came from? I love your tuts!! No1 on my list

[sushobhansardar]

5:00 Reference is not being added to it. So I'm unable to do System. Drawing < please assist.>

[lywatanak]

This is the best project for me thz VB Toolbox

[hectorsantini]

I'm a newbie and would like to know if you have an example using the windows OpenFile Dialog to be able to choose any image from the directory. This have been a very interesting tutorial especially for a beginner like me. Thanks.

[HazardEdit]

might be a stupid question, however... is it possible to export a dll from visual basic and use it in c#? since both languages are .NET?
for example i like the easy md5 function from visual basic and want to use it in c#.

[vishayinternet]

Hello, how can i create Activex control in VB.net (VS2010). I just want to create simple speedometer in VB.net

[Emag-dp]

C# and Java got a lot of similarities :O
At least in the coding language.

[josephwarner]

Very nice tutorial. Can you organize the functions in modules to keep the length of the DLL manageable? I am thinking of something like having each class being a module. Like have a class of constants, a class of orbit parameters, and a class of antenna parameter functions, and class of plots. It would look better I think if all the functions for one class was in its own module. Otherwise I see a dll being thousand of lines long.

[iordanchis]

First o all great job! I hope you're still making videos like this. You're doing humanity a great service! Thank you sir! :D

The Image in the PictureBox doesn't load a second time after I've loaded and then deleted it once. Why is that? Shouldn't it appear/reappear and disappear every time i click on the Draw and Delete buttons? If not, how do I make it work like that? Thanks!

[devindwight]

I made a .dll file with an XNA base.  So all I would need to do is move that ".dll" file into any project that I could use those same boilerplate classes?

[graphexx]

how or where i could find or create the comwrap.dll and toolkitpro1201vc90.dll file missing from my computer

[sachinmalla]

What we have to do for importing xls, csv and xlsx file
thank you

[douglasteachout]

I always use Option Strict On and the line Dim G as Graphics = Surface.CreateGraphics gives a late binding error.  How can I get rid of this error (any ideas)?

[MonikaSingh-joux]

plz give me the code for a sample program to create a user defined DLL

[amoseder]

FromFile brings an exception error it does not belong to System.Drawing

[georgegallimore]

it's not working for me, I follow your every step and all that i am getting is a BIG "X" in my form.
give me some hint,