public Student this[int i]
{
get { return(_students[i]); }
set
{
_students[i] = value;
StudentReferenceChanged?.Invoke(value, new StudentListHandlerEventArgs(CollectionName, "Елемент змінено", value));
}
}
public Student this[int index]
{
get
{
ValidateIndex(index);
return(students[index]);
}
set
{
ValidateIndex(index);
students[index] = value;
StudentReferenceChanged?.Invoke(this, new StudentListHandlerEventArgs(Name, "change student", value));
}
}
public Student this[TKey index]
{
get
{
return(list[index]);
}
set
{
try
{
list[index] = value;
list[index].PropertyChanged += PropChanged;
StudentChanged?.Invoke(this, new StudentsChangedEventArgs <TKey>(CollectionName, Action.Property, "Element was changed", index));
StudentReferenceChanged?.Invoke(this, new StudentListHandlerEventArgs(CollectionName, "Element was changed", list[index]));
}
catch { }
}
}
public Student this[int i]
{
get
{
if (i < 0 || Students == null || Students.Count < i)
{
return(null);
}
return(Students[i]);
}
set
{
if (i > -1 && Students != null && Students.Count > i)
{
Students[i] = value;
StudentReferenceChanged?.Invoke(this, new StudentListHandlerEventArgs(Name, "Reference student.", value));
}
}
}
public Student this [int index] {
get
{
if (students is null || index > students.Count - 1)
{
throw new IndexOutOfRangeException();
}
return(students[index]);
}
set
{
if (students is null || index > students.Count - 1)
{
throw new IndexOutOfRangeException();
}
students[index] = value;
StudentReferenceChanged?.Invoke(this, new StudentListHandlerEventArgs(value, "Change value", CollectionName));
}
}
public Student this[int index]
{
get
{
return(students[index]);
}
set
{
students[index] = value;
StudentListHandlerEventArgs args = new StudentListHandlerEventArgs
{
Name = this.Name,
Info = "Student reference changed",
Index = index
};
StudentReferenceChanged?.Invoke(value, args);
}
}
