How to get all the details of particular bill in another win

public void displayDataGridView()

{

SqlCommand cmd = new SqlCommand("Select ROW_NUMBER() over(ORDER BY Billno ASC) as ID, Billno, Customer_Details.CustName, Date,Amount, Tax_Amount, Total_Amount from MainBillForm join Customer_Details on MainBillForm.Name=Customer_Details.CustID where Sno=0 ", con);

try

{

con.Open();

SqlDataAdapter da = new SqlDataAdapter();

da.SelectCommand = cmd;

DataTable dt = new DataTable();

da.Fill(dt);

dataGridView1.DataSource = dt;

con.Close();

}

catch (Exception ec)

{

MessageBox.Show(ec.Message);

}