Question

需要帮助来弄清楚我的代码有什么问题。我收到此错误： System.NullReferenceException：＆＃39;对象引用未设置为对象的实例。＆＃39;在这一行：

post[0].Author = "Author at post 0";

守则：

class Logg
{
    public string Title { get; set; }
    public string Text { get; set; }
    public string Author { get; set; }
    public DateTime Date { get; set; }
    public static int Count = 0; //Count += 1 from Main
}
class Program
{
    static void Main(string[] args)
    {            
        List<Logg[]> LoggBok = new List<Logg[]>();
        Logg[] post = new Logg[10];

        LoggBok.Add(post);
        post[0].Author = "Author at post 0";
        post[0].Title = "Titel at post 0";
        post[0].Text = "My text at post 0";
        post[0].Date = DateTime.Now;

        post[1].Author = "Author 1 at post 1";
        post[1].Title = "Titel 1 at post 1";
        post[1].Text = "My text 1 at post 1";
        post[1].Date = DateTime.Now;

        post[2].Author = "Author 2 at post 2";
        post[2].Title = "Titel 2 at post 2";
        post[2].Text = "My text 2 at post 2";
        post[2].Date = DateTime.Now;

        Logg.Count = 3;

Answer 1

Logg[] post = new Logg[10];

创建了包含10个空值的数组，现在您必须为每个空值分配内存，例如：

post[0] = new Logg();

Smth错误索引（System.NullReferenceException）

1 个答案: