In this tutorial I will teach you how to add the items in the ListBox in VB.Net. With this, you can type whatever data you want in the InputBox and it will be added in the ListBox. The InputBox has been just like a MessageBox, their only difference is that the InputBox has a TextBox that you can input the data.

Let’s begin:

Open the Visual Studio and create a new Project. Drag a Button and a ListBox. Then, do the Form just like this.



After that, double click the Button to fire the click

event handler.

Now, create a string variable to store the data that you have input and set the value on it.

1. Dim
   
   inputdata As
   
   String
   
   =
   
   Nothing
   

Then, you have to create a constant variable to store a message on it and set it to its default message.

1. Const
   
   msg As
   
   String
   
   =
   
   "Input data"
   

After that, you have to add the input data from the InputBox in the ListBox.

1. ListBox1.
   
   Items
   
   .
   
   Add
   
   (
   
   InputBox
   
   (
   
   msg, "INPUT"
   
   , inputdata)
   
   )
   

Lastly, do this following code for clearing the data in the ListBox of the “Clear” Button.

1. Private
   
   Sub
   
   Button2_Click(
   
   ByVal
   
   sender As
   
   System.
   
   Object
   
   , ByVal
   
   e As
   
   System.
   
   EventArgs
   
   )
   
   Handles
   
   Button2.
   
   Click
   
2. 'CLEARING THE DATA IN THE LISTBOX
   
3. ListBox1.
   
   Items
   
   .
   
   Clear
   
   (
   
   )
   
4. End
   
   Sub
   

These are all the codes that we made.

1. Public
   
   Class
   
   Form1
   
2. Private
   
   Sub
   
   Button1_Click(
   
   ByVal
   
   sender As
   
   System.
   
   Object
   
   , ByVal
   
   e As
   
   System.
   
   EventArgs
   
   )
   
   Handles
   
   Button1.
   
   Click
   
3. 'SET A STRING VARIABLE FOR THE DATA
   
4. 'TO BE INPUT AND FOR THE MESSAGE OF THE INPUTBOX
   
5. Dim
   
   inputdata As
   
   String
   
   =
   
   Nothing
   
6. Const
   
   msg As
   
   String
   
   =
   
   "Input data"
   
7. 
   
8. 'ADDING THE DATA IN THE LISTBOX THROUGH INPUTBOX
   
9. ListBox1.
   
   Items
   
   .
   
   Add
   
   (
   
   InputBox
   
   (
   
   msg, "INPUT"
   
   , inputdata)
   
   )
   
10. 
    
11. End
    
    Sub
    
12. Private
    
    Sub
    
    Button2_Click(
    
    ByVal
    
    sender As
    
    System.
    
    Object
    
    , ByVal
    
    e As
    
    System.
    
    EventArgs
    
    )
    
    Handles
    
    Button2.
    
    Click
    
13. 'CLEARING THE DATA IN THE LISTBOX
    
14. ListBox1.
    
    Items
    
    .
    
    Clear
    
    (
    
    )
    
15. End
    
    Sub
    
16. End
    
    Class