protected void Button1_Click(object sender, EventArgs e) { dataclass e1 = new dataclass(); Byte[] imgByte = null; HttpPostedFile File = FileUpload1.PostedFile; if (File.ContentLength > 0) { imgByte = new Byte[File.ContentLength]; File.InputStream.Read(imgByte, 0, File.ContentLength); } e1.heli_insert(TextBox1.Text, TextBox2.Text, TextBox3.Text, imgByte, TextBox4.Text); GridView3.DataSource = e1.heliitem(); GridView3.DataBind(); TextBox1.Text = ""; TextBox2.Text = ""; TextBox3.Text = ""; TextBox4.Text = ""; Button1.Visible = true; Button2.Visible = false; Button3.Visible = false; }