C#如何實現單向鏈表(2)

在鏈表尾部添加數據的代碼如下：

//尾部添加數據
/// <summary>
/// 尾部添加數據
/// </summary>
/// <param name="DataValue"></param>
public void Append(int DataValue)//,int DataCurrent)
{
    ListNode NewNode = new ListNode(DataValue);//,DataCurrent);
    if (IsNull())
    //如果頭指針為空
    {
        Head = NewNode;
        Tail = NewNode;
    }
    else
    {
        Tail.Next = NewNode;
        NewNode.Previous = Tail;
        Tail = NewNode;
    }
    Current = NewNode;
    //鏈表數據個數加一
    ListCountValue += 1;
}

刪除當前位置的結點的代碼如下：

//刪除當前的數據
/// <summary>
/// 刪除當前的數據
/// </summary>
public void Delete()
{
    //若為空鏈表
    if (!IsNull())
    {
        //若刪除頭
        if (IsBof())
        {
            Head = Current.Next;
            Current = Head;
            ListCountValue -= 1;
            return;
        }
        //若刪除尾
        if (ISEOf())
        {
            Tail = Current.Previous;
            Current = Tail;
            ListCountValue -= 1;
            return;
        }
        //若刪除中間數據
        Current.Previous.Next = Current.Next;
        Current = Current.Previous;
        ListCountValue -= 1;
        return;
    }
}