Creating And Using Custom DLL For beginners

 Create A new Project

 

 

 

 

 

 

 

Code: 

Public Class MainClass
Class subClass1
Shared Sub ShowMsgBox(ByVal title As String, ByVal text As String)
MsgBox(text, MsgBoxStyle.Information, title)
End Sub
Shared Function GetAverage(ByVal number1 As Integer, ByVal number2 As Integer)
Return ((number1 + number2) / 2)
End Function
End Class
Sub AnotherNonSard()
'Dose somethink private hare.....
End Sub
End Class

Note:

Insert and sub , functions etc.in hare, but declare as 'Sared' they can be 'accessed by External project.

 

Next Build This project...

 

Build> MyDELL

 

 

 ........... Close First project....

 

 

 Create another new project.....

 

**You need 2 textbox and 1 button.

 

 

 

 *** Code Source.

 

 

 Now Add Reference : From First Project

 

 

 

 Next:

 

 

 

 

 

 Code:

 

Button Click Event

Imports MyDLL.MainClass
Public Class Form1
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
' does not exist yet, Because we have to emport it into our project...
subClass1.ShowMsgBox(TextBox1.Text, TextBox2.Text)
Me.Text = subClass1.GetAverage(10, 4)
End Sub
End Class

 

 Result: