private void button1_MouseClick(object sender, MouseEventArgs e)
{
var temp = listBox2.SelectedItem;
if (temp != null)
{
var forma = new StudentEdit();
var t = (Student)temp;
forma.Put(t);
var rezult = forma.ShowDialog();
if (rezult == DialogResult.OK)
{
t = forma.Get();
listBox2.Items.Remove(temp);
if ((databaseservis.dbContext.students.SingleOrDefault <Student>(n => n.Id == t.Id)) != null) // возвращаем или null если ничего не нашли или указатель на объект
{
(databaseservis.dbContext.students.SingleOrDefault <Student>(n => n.Id == t.Id)).Name = t.Name;
(databaseservis.dbContext.students.SingleOrDefault <Student>(n => n.Id == t.Id)).Age = t.Age;
(databaseservis.dbContext.students.SingleOrDefault <Student>(n => n.Id == t.Id)).Group = t.Group;
listBox2.Items.Add(t);
listBox2.Refresh();
}
databaseservis.Save();
}
}
}
private void button1_Click(object sender, EventArgs e)
{
var forma = new StudentEdit();
string s = File.ReadAllText(@"C:\Temp\spisok.json");
Student stud = System.Text.Json.JsonSerializer.Deserialize <Student>(s);
forma.Put(stud);
//var stud = new Student();
//stud = forma.Get();
var rezult = forma.ShowDialog();
if (rezult == DialogResult.OK)
{
// var stud = new Student();
stud = forma.Get();
File.WriteAllText(@"C:\Temp\spisok.json", System.Text.Json.JsonSerializer.Serialize(stud));
}
}