生成数字序列 [英] Generate a sequence of numbers

问题描述

我想在asp.net mvc2中创建序列号.

I want to create sequence numbers in asp.net mvc2..

然后数字应从 {0到1000} 开头.我想像以下那样

Then number should start from { 0 to 1000}. I tried like following,

 var seq = Enumerable.Range(1, 1000);
        ViewData["OrderNo"] = seq;

视图中:

 <%:Html.Hidden("OrderNo") %>
            <%:ViewData["OrderNo"] %>  

我的结果是

System.Linq.Enumerable+<RangeIterator>d__b8

但是在获取价值时，它不起作用...如何生成序号?

But when getting value in view it is not working... How to generate sequential numbers?

推荐答案

如果要枚举从 0 到a的数字序列( IEnumerable< int> )变量 end ，然后尝试

If you want to enumerate a sequence of numbers (IEnumerable<int>) from 0 to a variable end, then try

Enumerable.Range(0, ++end);

在解释中，要获得一个从0到1000的数字序列，您希望该序列从0开始(请记住，在0到1000之间(包括0和1000)，其中包括1001个数字).

In explanation, to get a sequence of numbers from 0 to 1000, you want the sequence to start at 0 (remembering that there are 1001 numbers between 0 and 1000, inclusive).

如果想要无限的线性级数，可以编写类似的函数

If you want an unlimited linear series, you could write a function like

IEnumerable<int> Series(int k = 0, int n = 1, int c = 1)
{
    while (true)
    {
        yield return k;
        k = (c * k) + n;
    }
}

您可以像

var ZeroTo1000 = Series().Take(1001);

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如果您想要一个函数，可以重复调用以生成递增的数字，也许您想要类似的东西.

---

If you want a function you can call repeatedly to generate incrementing numbers, perhaps you want somthing like.

using System.Threading;

private static int orderNumber = 0;

int Seq()
{
    return Interlocked.Increment(ref orderNumber);
}

调用 Seq()时，它将返回下一个订单号并增加计数器.

When you call Seq() it will return the next order number and increment the counter.

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