C#笔记：使用Unsafe代码与结构体

unsafe private void DoAction_Click(object sender, RoutedEventArgs e)
{
    Node* list = CreateLinkList(new int[] { 1, 2, 3, 4 });

    while(list->next!=null)
    {
        this.result.Content += (list->data).ToString() + "##";
        list = list->next;
    }
}

unsafe private Node* CreateLinkList(int[] inputList)
{
    int length = inputList.Length;

    Node* root = null;
    root = CreateNode(0, "root 分配内存失败！");
    root->next = null;

    Node* listTail = root;//定义一个位置指针，指向链表尾

    fixed (int* pIntStart = inputList) //操作一个托管对象要先fix一下。找到地址。
    {
        int* pInt = pIntStart;//引用一个临时指针用来指向传入的inputList

        //开始循环创建链表
        for (int i = 0; i < length; i++)
        {
            if(pInt==null)
            {
                throw new Exception("粗大事了！！！未知错误使传入数组为null");
            }

            Node* temp = CreateNode(*pInt, "节点 分配内存失败");
            temp->next = null;

            //把新增节点加入到前一个节点
            listTail->next = temp;

            listTail = listTail->next;//把位置指针指向下一个节点
            pInt++;//指向数组的指针往后指一位
        }
    }
    return root;
}

unsafe private Node* CreateNode(int data, string errMsg)
{
    Node* temp = null;
    temp = (Node*)Marshal.AllocHGlobal(sizeof(Node));//尝试分配节点内存
    if (temp == null)
    {
        throw new NullReferenceException(errMsg);
    }

    temp->data = data;

    return temp;
}


unsafe struct Node
{
    public int data;
    public Node* next;
}