Store data from one Grid To another Grid and to sqlserver2008(DataBase) also

protected void btn_Save_Click(object sender, EventArgs e)
{

DataTable m_dt = new DataTable();
DataRow dr;
m_dt.Columns.Add(new DataColumn("Br_Name"));
m_dt.Columns.Add(new DataColumn("Br_BeddedHospital"));
m_dt.Columns.Add(new DataColumn("Br_Director"));
m_dt.Columns.Add(new DataColumn("Br_Since"));
m_dt.Columns.Add(new DataColumn("Br_Fax"));
m_dt.Columns.Add(new DataColumn("Br_Address"));
m_dt.Columns.Add(new DataColumn("Br_Phone_No1"));
m_dt.Columns.Add(new DataColumn("Br_E_Mail_Id"));
 

foreach (GridViewRow gvr in grv_Child.Rows)
{
dr = m_dt.NewRow();
dr["Br_Name"] = ((Label)gvr.Cells[1].FindControl("Label1")).Text;
dr["Br_BeddedHospital"] = ((Label)gvr.Cells[2].FindControl("Label2")).Text;
dr["Br_Director"] = ((Label)gvr.Cells[3].FindControl("Label3")).Text;
dr["Br_Since"] = ((Label)gvr.Cells[4].FindControl("Label4")).Text;
dr["Br_Fax"] = ((Label)gvr.Cells[5].FindControl("Label5")).Text;
dr["Br_Address"] = ((Label)gvr.Cells[6].FindControl("Label6")).Text;
dr["Br_Phone_No1"] = ((Label)gvr.Cells[7].FindControl("Label7")).Text;
dr["Br_E_Mail_Id"] = ((Label)gvr.Cells[8].FindControl("Label8")).Text;
m_dt.Rows.Add(dr);
}
 
grv_BranchDetails.DataSource = m_dt;
grv_BranchDetails.DataBind();


SqlConnection sconn = new SqlConnection();

sconn.ConnectionString = "your connection string here";

SqlCommand ins = new SqlCommand();

ins.Connection = sconn;

ins.CommandText = "update yourtable set Br_Name=@Br_Name, Br_BeddedHospital=@Br_BeddedHospital, Br_Director=@Br_Director, Br_Since=@Br_Since, Br_Fax=@Br_Fax, Br_Address=@Br_Address, Br_Phone_No1=@Br_Phone_No1, Br_E_Mail_Id=@Br_E_Mail_Id"; 

ins.Parameters.AddWithValue("@Br_Name",yourgrid.Value.ToString());
ins.Parameters.AddWithValue("@Br_BeddedHospital",yourgrid.Value.ToString();
ins.Parameters.AddWithValue("@Br_Director",yourgrid.Value.ToString();
ins.Parameters.AddWithValue("@Br_Since",yourgrid.Value.ToString();
ins.Parameters.AddWithValue("@Br_Fax",yourgrid.Value.ToString();
ins.Parameters.AddWithValue("@Br_Address",yourgrid.Value.ToString();
ins.Parameters.AddWithValue("@Br_Phone_No1",yourgrid.Value.ToString();
ins.Parameters.AddWithValue("@Br_E_Mail_Id",yourgrid.Value.ToString();

sconn.Open();
                   
ins.ExecuteNonQuery();
                    
sconn.Close();
}