datagridview refresh

this is not helpfull for me this is code

 private void button5_Click(object sender, EventArgs e)
{ investor_report re = new investor_report();
 re.Show();
DataTable dt = new DataTable(); using (SqlConnection conn = new SqlConnection(@" Data Source=.\SQLEXPRESS;AttachDbFilename=C:\Users\heaven_prince2009\Desktop\final pr latest\final pr\Database1.mdf;Integrated Security=True;User Instance=True "))

 { if (conn.State == ConnectionState.Closed) conn.Open();
 string sql = "select *from add_investor"; SqlCommand cmd = new SqlCommand(sql, conn); SqlDataAdapter dap = new SqlDataAdapter(cmd);
 dap.Fill(dt);
if (conn.State == ConnectionState.Open) conn.Close();
 conn.Dispose();
re.dtataGridview.dataource=dt;  when i try this auto option is data binding. i want to update gridview on form investor_report. while re is its instence
  } }

please refer the below link

http://www.dreamincode.net/forums/topic/238727-insert-update-and-delete-records-in-table-with-datagridview-using-c%23/

Regards,
Iftikar

can you share your code?

Regards,
Iftikar

i am using first time i dont know how to call that function
i make access modifire public of gridview.

Hi,
        You need to call Load grid function after updating your customer on button click.
If possible then share your code.

Regards,
Iftikar