public static AccountDbContext getInstance()
{
if (accountDbContext == null)
{
accountDbContext = new AccountDbContext();
}
return(accountDbContext);
}
public string delete(AccountGroup item)
{
var accounts = AccountDbContext.getInstance().findAccountsByAccountGroup(item);
if (accounts.Count > 0)
{
return("Cannot delete account group which exists account(s).");
}
using (var db = new BaseDbContext())
{
db.Entry(item).State = EntityState.Deleted;
db.SaveChanges();
return(null);
}
}