C# Windows Form จะ Browse File แล้วเก็บลงโฟนเดอร์ และเก็บพาทลง database ยังไงคะ

private void button4_Click(object sender, EventArgs e)
        {
            OpenFileDialog openFileDialog1 = new OpenFileDialog();
            openFileDialog1.Filter = "DOC Files(*.doc)|*.doc|DOCX Files(*.docx)|*.docx|XLS Files(*.xls)|*.xls|XLSX Files(*.xlsx)|.*xlsx|JPG Files(*.jpg)|*.jpg|PNG Files(*.png)|*.png|All Files(*.*)|*.*";
            if (openFileDialog1.ShowDialog() == DialogResult.OK)

            {
                //string filePath = openFileDialog1.FileName.ToString();
                textBox6.Text = openFileDialog1.FileName;
            }
        }

        private void button1_Click(object sender, EventArgs e)
        {
            SqlConnection con = new SqlConnection(@"Data Source=.\SQLEXPRESS2005;Initial Catalog=dcoffice;Integrated Security=True");
            con.Open();
            string filePath = @"D:\innoread\protest\documentoffice\dcfile\FileName";
            File.Copy(textBox6.Text, filePath, true);
            SqlCommand cmd = new SqlCommand("insert into docoff (id,name,company,cdate,typedoc,dcfile) values ('" + textBox1.Text + "','" + textBox2.Text + "','" + textBox3.Text + "','" + this.dateTimePicker1.Text + "','" + TypeDoc + "','" + filePath + "')",con);
            cmd.ExecuteNonQuery();
            System.IO.File.Copy(textBox6.Text, "D:\\innoread\\protest\\documentoffice\\dcfile\\FileName", true);
            MessageBox.Show("Record Inserted!", "Programming At Kstark");
            con.Close(); 
        }