this is the html
<asp:FileUpload ID="uploadphoto" runat="server" Width="251px" />
code is
protected void btnsubmit_Click(object sender, EventArgs e)
{
string filename = "";
if (uploadphoto.PostedFile != null)
{
filename = Path.GetFileName(uploadphoto.PostedFile.FileName);
if (filename != "")
{
uploadphoto.SaveAs(Server.MapPath("images/" + filename));
string path = "images/" + filename;
}
}
}