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

Submitted by donbermoy on Thursday, March 13, 2014 - 16:38.

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: design

3.Now put this code for your code module.

Public Class Form1
 
    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
        ListBox1.Items.Add(TextBox1.Text)
        TextBox1.Clear()
    End Sub
 
    Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click
        Dim ob1, ob2, ob3 As String
        Dim num1, num2 As Integer
 
        For Each ob1 In ListBox1.Items
            For Each ob2 In ListBox1.Items
                If ob1 = ob2 Then
                    num1 += 1
                End If
            Next
            If num1 > num2 Then
                num2 = num1
                ob3 = ob1
            End If
            num1 = 0
        Next
        MsgBox(ob3 & " is repeated " & num2 & " times")
    End Sub
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! :) For more inquiries and need programmer for your thesis systems in any kind of programming languages, just contact my number below. Best Regards,

Engr. Lyndon R. Bermoy
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