VB.NET
* Public Class Form1

Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
OpenFileDialog1.ShowDialog()
TextBox1.Text = OpenFileDialog1.FileName
End Sub

Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click
SaveFileDialog1.ShowDialog()
TextBox2.Text = SaveFileDialog1.FileName()
End Sub

Private Sub Button3_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button3.Click
FileCopy(TextBox1.Text, TextBox2.Text)
End Sub

Private Sub Button4_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button4.Click
OpenFileDialog2.ShowDialog()
TextBox3.Text = OpenFileDialog2.FileName
End Sub

Private Sub Button5_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button5.Click
System.IO.File.Delete(TextBox3.Text)
End Sub
End Class 
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