private void tabControl_SelectedIndexChanged(object sender, EventArgs e)
{
TabControl tc = sender as TabControl;
if (tc.SelectedTab.Text == "Города")
{
lbCities.Items.Clear();
using (teamProject2022Entities le = new teamProject2022Entities())
{
Cities city = new Cities();
foreach (var ct in le.Cities)
{
lbCities.Items.Add(ct.city);
}
}
}
}
private void btOk_Click(object sender, EventArgs e)
{
if (tbCity.Text == string.Empty)
{
return;
}
if (btOk.Text == "Добавить")
{
using (teamProject2022Entities le = new teamProject2022Entities())
{
Cities city = new Cities()
{
city = tbCity.Text
};
le.Cities.Add(city);
le.SaveChanges();
}
tabControl_SelectedIndexChanged(tabControl, EventArgs.Empty);
}
else if (btOk.Text == "Удалить")
{
using (teamProject2022Entities le = new teamProject2022Entities())
{
Cities c = le.Cities.FirstOrDefault(x => x.city.Equals(tbCity.Text, StringComparison.InvariantCultureIgnoreCase));
if (c != null)
{
le.Cities.Remove(c);
}
le.SaveChanges();
}
tabControl_SelectedIndexChanged(tabControl, EventArgs.Empty);
tbCities.Text = "";
btOk.Text = "Добавить";
}
}