ASP.Net ผมจะดึงข้อมลรูปภาพมาโชว์ในฟอร์มแก้ไขข้อมูลส่วนตัวจะ Select อย่างไรครับ C#

if (!this.FileUpload1.HasFile)
            {
                this.lblStatus.Text = "*กรุณาเลือกรูปภาพ";
            }
            else
            {

                this.FileUpload1.SaveAs(Server.MapPath("Pic/" + FileUpload1.FileName));
                this.lblStatus.Text = "<b>" + FileUpload1.FileName + "</b> Uploaded.<br>";


               strSQL = "INSERT INTO Register                 (UserName,Password,FullName,Sex,Address,EmailAdddress,Tel,Agencies,Position,Pic,Status) " +
                    " VALUES " +
                    " ('" + this.txtUsername.Text + "','" + this.txtPass.Text + "','" + this.txtname.Text + "','" + this.ddlsex.SelectedItem + "','" + this.TextBox1.Text + "', " +
                    " '" + this.txtmail.Text + "','" + this.txttel.Text + "','" + this.ddlAgen.SelectedItem.Value + "'," +
                    "'" + this.ddlPosi.SelectedItem.Value + "','" + FileUpload1.FileName + "','"+this.ddltype.SelectedItem+"')";
                    objCmd.Connection = objConn;
                    objCmd.CommandText = strSQL;
                    objCmd.CommandType = CommandType.Text; ;
                    objCmd.CommandText = strSQL;

if (dtReader.HasRows)
            {
                dtReader.Read();
                this.lblUsername.Text = dtReader["UserName"].ToString();
                this.txtPass.Text = dtReader["Password"].ToString();
                this.txtConpass.Text = dtReader["Password"].ToString();
                this.txtname.Text = dtReader["FullName"].ToString();
                this.ddlsex.SelectedValue = dtReader["Sex"].ToString();
                this.txtAddress.Text = dtReader["Address"].ToString();
                this.txtmail.Text = dtReader["EmailAdddress"].ToString();
                this.txttel.Text = dtReader["Tel"].ToString();
                this.ddlAgen.SelectedValue = dtReader["Agencies"].ToString();
                this.ddlPosition.SelectedValue = dtReader["Position"].ToString();
                Image1.ImageUrl = Server.MapPath("Pic/Pic");
                this.Label1.Text = dtReader["Status"].ToString();
            }

Image1.ImageUrl = "Pic/" + dtReader["Pic"].ToString();