String Palindrome in VB.NET

I wrote this program to ask the user to give a string and then the program will check if the given string is a palindrome or not using Microsoft Visual Basic .NET.

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Sample Program Listing

Program Listing

Public Class Form1

    Private Sub Button1_Click(sender As Object, e As EventArgs) Handles Button1.Click

        Dim strText As String = UCase(TextBox1.Text)

        Dim str As String

        str = StrReverse(UCase(strText))

        If str.Equals(strText) Then

            MsgBox("The given string is " & strText & " is a Palindrome.")

            TextBox1.Focus()

        Else

            MsgBox("The given string is " & strText & " is a Not Palindrome.")

            TextBox1.Focus()

        End If

    End Sub

    Private Sub Button2_Click(sender As Object, e As EventArgs) Handles Button2.Click

        TextBox1.Text = ""

        TextBox1.Focus()

    End Sub

    Private Sub Button3_Click(sender As Object, e As EventArgs) Handles Button3.Click

        If MsgBox("Are you sure you want to quit?", vbYesNo + vbQuestion, "Quit") = vbYes Then

            Me.Close()

        Else

            Me.Show()

            TextBox1.Text = ""

            TextBox1.Focus()

        End If

    End Sub

    

End Class