In my tutorial “How to Pass Value from One Form to another Form” I discussed how the other form received a value by using a Public Variable.

There are so many discussions on the Internet that argues whether Public Variable is a good programming practice compare to Property. Well, IMHO public variable is an option for simplicity. You do not need to waste line of code just to get the same result.

However, there are some certain areas that we need to consider like OOP and Security. Public Variables as the name implies is subject to vulnerabilities. Arjay_nacion has also commented to my tutorial which breaks the encapsulation principle of OOP.

Without further ado let’s get on the code.

Add two forms in your project called “Form1” and “Form2”. Add the necessary controls as shown in the following screenshot.

[inline:Pass_Value.jpg=Pass values between Windows Forms]

In Form1 add the following code:

1. Private
   
   Sub
   
   Button1_Click(
   
   ByVal
   
   sender As
   
   System.
   
   Object
   
   , ByVal
   
   e As
   
   System.
   
   EventArgs
   
   )
   
   Handles
   
   Button1.
   
   Click
   
2. Dim
   
   Frm2 As
   
   Form2
   
3. 
   
4. Frm2 =
   
   New
   
   Form2
   
5. 
   
6. Frm2.
   
   GetFolioNumber
   
   =
   
   txtFolioNumber.
   
   Text
   
7. 
   
8. Frm2.
   
   Show
   
   (
   
   )
   
9. End
   
   Sub
   

In Form2 add the following code:

1. Dim
   
   FolioNumber As
   
   String
   
2. 
   
3. Public
   
   WriteOnly
   
   Property
   
   GetFolioNumber(
   
   )
   
4. Set
   
   (
   
   ByVal
   
   value)
   
5. FolioNumber =
   
   value
   
6. End
   
   Set
   
7. End
   
   Property
   
8. 
   
9. Private
   
   Sub
   
   Form2_Load(
   
   ByVal
   
   sender As
   
   System.
   
   Object
   
   , ByVal
   
   e As
   
   System.
   
   EventArgs
   
   )
   
   Handles
   
   MyBase
   
   .
   
   Load
   
10. txtFolioNumber.
    
    Text
    
    =
    
    FolioNumber
    
11. End
    
    Sub
    

I hope this helps.