如何更改FileUpload控件(System.Web.UI.WebControls)中的浏览按钮的文本

protected void UploadFile_ChangeEventHandler(object sender, EventArgs e)
{
    if (FileUpload1.HasFile)
    {
        // Save the uploaded file to the server
        FileUpload1.SaveAs(Server.MapPath("~/Files/" + FileUpload1.FileName));

        // Change the browse button text to display the uploaded file name
        FileUpload1.FindControl("browse").Controls[0].Text = FileUpload1.FileName;
    }
}