Get the Most Repeated Text in a ListBox using VB.NET

[vinnyboy16]

In this article, we will create a program that can determine the most repeated string or text inputted that is displayed in the ListBox.

Now, let's start this tutorial!

1. Let's start with creating a Windows Form Application for this tutorial by following the following steps in Microsoft Visual Studio: Go to File, click New Project, and choose Windows Application.

2. Next, add one TextBox named TextBox1 that will serve as your input, two buttons named Button1 for adding the inputted text in the ListBox and Button2 for getting and displaying the most repeated text in a ListBox, and one listbox named ListBox1 for displaying the list of inputted text/items in the textbox. You must design your layout like this:

3.Now put this code for your code module.

1. Public
   
   Class
   
   Form1
   
2. 
   
3. Private
   
   Sub
   
   Button1_Click(
   
   ByVal
   
   sender As
   
   System.
   
   Object
   
   , ByVal
   
   e As
   
   System.
   
   EventArgs
   
   )
   
   Handles
   
   Button1.
   
   Click
   
4. ListBox1.
   
   Items
   
   .
   
   Add
   
   (
   
   TextBox1.
   
   Text
   
   )
   
5. TextBox1.
   
   Clear
   
   (
   
   )
   
6. End
   
   Sub
   
7. 
   
8. Private
   
   Sub
   
   Button2_Click(
   
   ByVal
   
   sender As
   
   System.
   
   Object
   
   , ByVal
   
   e As
   
   System.
   
   EventArgs
   
   )
   
   Handles
   
   Button2.
   
   Click
   
9. Dim
   
   ob1, ob2, ob3 As
   
   String
   
10. Dim
    
    num1, num2 As
    
    Integer
    
11. 
    
12. For
    
    Each
    
    ob1 In
    
    ListBox1.
    
    Items
    
13. For
    
    Each
    
    ob2 In
    
    ListBox1.
    
    Items
    
14. If
    
    ob1 =
    
    ob2 Then
    
15. num1 +=
    
    1
    
16. End
    
    If
    
17. Next
    
18. If
    
    num1 >
    
    num2 Then
    
19. num2 =
    
    num1
    
20. ob3 =
    
    ob1
    
21. End
    
    If
    
22. num1 =
    
    0
    
23. Next
    
24. MsgBox
    
    (
    
    ob3 &
    
    " is repeated "
    
    &
    
    num2 &
    
    " times"
    
    )
    
25. End
    
    Sub
    
26. End
    
    Class
    

Explanation:

For Button1, we used this button to add the inputted string in the textbox to be displayed in the listbox. Then after displaying, it will clear the inputted string inside the textbox.

For Button2, this button is used to determine the most repeated text inside the listview. We have initialized variable ob1, ob2, ob3 As String and variable num1, num2 As Integer. Then, we have created a nested For Each loop. We have first initialized variable ob1 in the for each loop to hold the items of the listbox, then the variable ob2. If variable ob1 and ob2 are equal num1 will increment by 1. if variable num1 is greater than variable num2 then the two variables will be equal and variable ob3 will now hold the value of variable ob3 then the num1 will be equal to be 0. The ob3 variable here holds the string value that is the most repeated text in the listbox and variable num2 holds the number of times it occurs in the listbox.

Output:

Download the source code below and try it! :)

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