C# Wpf list 前移后移一个元素的操作

//List 向后移动一个元素
private void MoveBehindUtilityDataList(List<T> UtilityRecordList, int MoveIndex, T MovedData)
{
	T Current, tmp;

	tmp = T[MoveIndex];
	for (int i = MoveIndex; i < UtilityRecordList.Count - 1; i++)
	{
		Current = tmp;
		tmp = UtilityRecordList[i + 1];
		UtilityRecordList[i + 1] = Current;
	}
	UtilityRecordList[MoveIndex] = MovedData;

	return;
}

//List 向前移动一个元素
private void MoveFrontUtilityDataList(List<T> UtilityRecordList, int MoveIndex, T MovedData)
{
	for (int i = MoveIndex + 1; i < UtilityRecordList.Count; i++)
	{
		
		UtilityRecordList[i - 1] = UtilityRecordList[i];
	}
	UtilityRecordList[UtilityRecordList.Count - 1] = MovedData;

	return;
}