two rows are apearing in data grid for each column. what is problem. help me with this

for (i = 0; i <= dt.Rows.Count-1; i++)
                  {
                      int newRowIndex = ins.dataGridView1.Rows.Add();

                          ins.dataGridView1.Rows[newRowIndex].Cells["Loan_id"].Value = dt.Rows[i]["Loan_id"].ToString();
                          ins.dataGridView1.Rows[newRowIndex].Cells["Transaction_no"].Value = dt.Rows[i]["Transaction_no"].ToString();
                          ins.dataGridView1.Rows[newRowIndex].Cells["Installment_Amount"].Value = dt.Rows[i]["Installment_Amount"].ToString();
                          ins.dataGridView1.Rows[newRowIndex].Cells["Due_Date"].Value = dt.Rows[i]["Due_Date"].ToString();
                          ins.dataGridView1.Rows[newRowIndex].Cells["Transaction_Date"].Value = dt.Rows[i]["Transaction_Date"].ToString();
                          ins.dataGridView1.Rows[newRowIndex].Cells["Fine"].Value = dt.Rows[i]["Fine"].ToString();
                          ins.dataGridView1.Rows[newRowIndex].Cells["Paid_with_fine"].Value = dt.Rows[i]["Paid_with_fine"].ToString();
                          ins.dataGridView1.Rows[newRowIndex].Cells["Amount_recieved"].Value = dt.Rows[i]["Amount_recieved"].ToString();
                          ins.dataGridView1.Rows[newRowIndex].Cells["Paid_Amount"].Value = dt.Rows[i]["Paid_Amount"].ToString();
                          ins.dataGridView1.Rows[newRowIndex].Cells["Remaining_Amount"].Value = dt.Rows[i]["Remaining_Amount"].ToString();
                          ins.dataGridView1.Rows[newRowIndex].Cells["Customer_CNIC"].Value = dt.Rows[i]["Customer_CNIC"].ToString();

                  }