private void btneditsave_Click(object sender, EventArgs e)
{
var db = new K22T_CSEntities();
Class newClass = db.Classes.Find(@class.id);
try {
newClass.Name = this.tbEdit.Text;
db.Entry(newClass).State = System.Data.Entity.EntityState.Modified;
db.SaveChanges();// Do-it
}catch (Exception ex) {
MessageBox.Show(ex.Message);
}
this.Close();
}
private void btnSave_Click(object sender, EventArgs e)
{
Class @class = new Class();
@class.Name = tbClassname.Text;
try {
var db = new K22T_CSEntities();
db.Classes.Add(@class);
db.SaveChanges(); // Do it
}
catch (Exception ex) {
MessageBox.Show(ex.Message);
}
this.Close();
}
private void btnDelete_Click(object sender, EventArgs e)
{
var db = new K22T_CSEntities();
for (int i = 0; i < this.lstClass.SelectedRows.Count; i++)
{
var row = this.lstClass.SelectedRows[i];
var item = (Class)row.DataBoundItem;
try {
var @class = db.Classes.Find(item.id);
db.Classes.Remove(@class);
db.SaveChanges();
}
catch (Exception ex) {
MessageBox.Show(ex.Message);
}
}
}
private void ShowClassList()
{
var db = new K22T_CSEntities();
this.lstClass.DataSource = db.Classes.ToList();
}
