我要在C#窗体中做一个文件保存到数据库的功能，请问要用到那些控件？

pictureBox 控件  Buttob控件

参考代码（显示用户选择的图片，点击上传按钮之后就以二进制保存到数据库中）：

 private void button1_Click(object sender, EventArgs e)
        {  
            if (openFileDialog1.ShowDialog() == DialogResult.OK && openFileDialog1.FileName != "")
            {
                System.Drawing.Bitmap objPic;
                objPic = new System.Drawing.Bitmap(openFileDialog1.FileName.ToString().Trim());
                pictureBox1.Image = new System.Drawing.Bitmap(objPic, 200, 200);
                pictureBox1.Image = Image.FromFile(openFileDialog1.FileName); 
            }     
        }
        private void button2_Click(object sender, EventArgs e)
        {
           try
                {
                    string conString = "Data Source =.; Initial Catalog = ;User ID = ; Pwd = ";
                    SqlConnection connection = new SqlConnection(conString);
                    string sql = "insert c values (1,@TP)";
                    SqlCommand command = new SqlCommand(sql, connection);
                    string picturePath = openFileDialog1.FileName; 
                    FileStream fs = new FileStream(picturePath, FileMode.Open, FileAccess.Read);
                    Byte[] mybyte = new byte[fs.Length];
                    fs.Read(mybyte, 0, mybyte.Length);
                    fs.Close();
                    SqlParameter prm = new SqlParameter
                    ("@TP", SqlDbType.VarBinary, mybyte.Length, ParameterDirection.Input, false, 0, 0, null, DataRowVersion.Current, mybyte);
                    command.Parameters.Add(prm);
                    connection.Open();
                    int result =  command.ExecuteNonQuery();
                    connection.Close();
                    if (result > 0) { MessageBox.Show("上传成功！", "提示");}

                }
                catch (Exception ex)
                {
                    MessageBox.Show(ex.Message);
                }
            }

来了来了