Use of File upload Control in Asp Dot Net

protected void Page_Load(object sender, EventArgs e)

{

        Image1.Visible = false;

}

protected void Button_Upload_Click(object sender, EventArgs e)

{

        String str = "Pass the path wher you want to save the uploaded file

                           (For example : D:\\Visual studio\\Website\\FileUpload\\

                           Images\\)" + FileUpload1.FileName;

        FileUpload1.SaveAs(str);

        Image1.ImageUrl = "~//Images//" + FileUpload1.FileName;

        Image1.Visible = true;

}