Setup and forms

paymentLogs/Forms/MainForm.cs

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+using PaymentLogs.Domain;
+using System;
+using System.Collections.Generic;
+using System.ComponentModel;
+using System.Data;
+using System.Drawing;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Windows.Forms;
+
+namespace PaymentLogs.Forms
+{
+    public partial class MainForm : Form
+    {
+        public MainForm()
+        {
+            InitializeComponent();
+        }
+
+        private void Form2_Load(object sender, EventArgs e)
+        {
+            dataGridView1.Columns.Add("id", "Номер");
+            dataGridView1.Columns.Add("name", "Наименование");
+            dataGridView1.Columns.Add("type", "Тип");
+            dataGridView1.Columns.Add("cost", "Цена");
+            dataGridView1.Columns.Add("duration", "Длительность");
+            dataGridView1.Columns.Add("studentsCount", "Кол-во студентов");
+            foreach (Course course in Program.CourseRepository.All())
+            {
+                dataGridView1.Rows.Add(course.Id.ToString(), course.Name.ToString(), course.Type.ToString(), course.Cost.ToString(),
+                    course.Duration.ToString(), course.StudentsCount.ToString());
+            }
+
+        }
+
+        private void textBox2_TextChanged(object sender, EventArgs e)
+        {
+
+        }
+
+        private void button1_Click(object sender, EventArgs e)
+        {
+            String text = textBox2.Text;
+            this.Hide();
+            new StudentsForm(text).Show();
+        }
+
+        private void dataGridView1_CellContentClick(object sender, DataGridViewCellEventArgs e)
+        {
+
+        }
+
+        private void toolStripButton2_Click(object sender, EventArgs e)
+        {
+            foreach (DataGridViewRow row in dataGridView1.Rows)
+            {
+                try
+                {
+                    if (row.Cells.Count > 1 && row.Cells["id"].Value != null)
+                    {
+                        Course course = new Course
+                        {
+                            Id = Convert.ToInt32(row.Cells["id"].Value),
+                            Name = row.Cells["name"].Value.ToString(),
+                            Type = row.Cells["type"].Value.ToString(),
+                            Cost = Convert.ToInt32(row.Cells["cost"].Value),
+                            Duration = Convert.ToInt32(row.Cells["duration"].Value),
+                            StudentsCount = Convert.ToInt32(row.Cells["studentsCount"].Value)
+                        };
+                        Program.CourseRepository.Update(course.Id, course);
+                    }
+
+                }
+                catch (NullReferenceException ignored)
+                {
+                    Console.WriteLine(ignored.Message);
+                }
+                catch (Exception ex)
+                {
+                    Console.WriteLine(ex.Message);
+                }
+
+            }
+            Program.CourseRepository.Save();
+        }
+
+        private void toolStripButton1_Click(object sender, EventArgs e)
+        {
+            this.Hide();
+            new MainForm().Show();
+        }
+    }
+}