Some fixes

sql2/Forms/DataForm.cs

@@ -27,12 +27,14 @@ namespace PaymentLogs
             dataGridView1.Columns.Add("fcs", "ФИО");
             dataGridView1.Columns.Add("course", "Курс");
             dataGridView1.Columns.Add("course_price", "Цена");
+            dataGridView1.Columns.Add("paid", "Оплачено");
             dataGridView1.Columns.Add("debt", "Долг");
 /*            BindingList<Payment> list1 = new BindingList<Payment>();
             dataGridView1.DataSource = list1;*/
             foreach (Payment payment in Program.PaymentRepository.All())
             {
-                dataGridView1.Rows.Add(payment.Id.ToString(), payment.FCs, Program.CourseRepository.ById(payment.CourseId).Name, payment.CoursePrice.ToString(), payment.Debt.ToString());
+                dataGridView1.Rows.Add(payment.Id.ToString(), payment.FCs, Program.CourseRepository.Get(payment.CourseId).Name,
+                    payment.CoursePrice.ToString(), payment.Paid.ToString(), payment.Debt.ToString());
             }
         }
 
@@ -50,5 +52,28 @@ namespace PaymentLogs
         {
 
         }
+
+        private void toolStripButton2_Click(object sender, EventArgs e)
+        {
+            foreach (DataGridViewRow row in dataGridView1.Rows)
+            {
+                try
+                {
+                    Payment payment = new Payment
+                    {
+                        Id = Convert.ToInt32(row.Cells["id"].Value),
+                        FCs = row.Cells["fcs"].ToString(),
+                        CourseId = Program.CourseRepository.ByName(row.Cells["course"].Value.ToString()).Id,
+                        CoursePrice = Convert.ToInt32(row.Cells["course_price"].Value),
+                        Paid = Convert.ToInt32(row.Cells["paid"].Value),
+                        Debt = Convert.ToInt32(row.Cells["debt"].Value)
+                    };
+                    Program.PaymentRepository.Update(payment.Id, payment);
+                } catch(NullReferenceException ignored) 
+                { }
+                
+            }
+            Program.PaymentRepository.Save();
+        }
     }
 }