小编Aar*_*dv1的帖子

参考下面的HTML,有四个DIV容器,每个容器包含一个图像,heading-element,paragraph-element和一个链接.当页面在全尺寸计算机显示器上打开时,我希望三个div在屏幕上并排排列.

到目前为止,它们只是垂直向下堆叠在屏幕上.

<div class="threeSpread">
    <div class="outer">
    <img src="imagesForNew/new1.jpg">
    <h2>CHININESE INVESTORS COME TO DETROIT</h2>
    <p>"the Shanghai-based developer Dongdu International (DDI) made its first move. In an online auction, it snapped up three iconic downtown properties, all built during the citys early 20th-century"</p>
     <a href="http://www.theguardian.com/cities/2014/jul/22/does-multimillion-dollar-chinese-investment-signal-detroits-rebirth">theguardian.com</a>
    </div>

    <div class="inner">
    <img src="imagesForNew/new1.jpg">
    <h2>CHININESE INVESTORS COME TO DETROIT</h2>
    <p>"the Shanghai-based developer Dongdu International (DDI) made its first move. In an online auction, it snapped up three iconic downtown properties, all built during the citys early …

这是EverythingController中动作方法MovieCustomer的粘贴.Viewmodel用于组合两个模型:Customer和Movies,并通过ApplicationDbContext(_context)填充来自数据库的信息.

路由功能成功运行,并在有MovieId和CustomerId值时呈现页面

例如/ Everything/MovieCustomer/1/1

如果一个或两个值为null,我希望页面也加载.到目前为止,两个int参数都是可空的,并且在方法中有一个if语句,如果其中任何一个为null,则将参数更改为1.到目前为止,如果值为null,则浏览器返回404错误.

当一个参数或其中一个参数为空时,如何使页面正常工作？谢谢

[Route("Everything/MovieCustomer/{movieId}/{customerId}")]
public ActionResult MovieCustomer(int? movieId, int? customerId)
{
    var viewmodel = new ComboViewModel
    {
        _Customers = new List<Customer>(),
        _Movies = new List<Movies>(),
        _customer = new Customer(),
        _movie =  new Movies()
    };
    viewmodel._Customers = _context.Customers.ToList();
    viewmodel._Movies = _context.Movies.ToList();

    if (!movieId.HasValue)
        movieId = 1;

    if (!customerId.HasValue)
        customerId = 1;

    viewmodel._customer = viewmodel._Customers.SingleOrDefault(a => a.Id == customerId);
    viewmodel._movie = viewmodel._Movies.SingleOrDefault(a => a.Id == movieId);

    return View(viewmodel);
}

以下是位于Form1.cs文件中的程序的一部分，该程序启动时使用值填充domainUpDown小部件。我在Form1加载时调用该方法。

程序启动时会加载Form1，但不会触发Form1_Load方法。

为什么不触发Form1_Load方法？

         private void BindDomainIUpDown()
        {
            for (int i = 1; i <= 999; i++)
            {
                domainUpDown1.Items.Add(i);
            }
            domainUpDown1.Text = "100";
        }

        private void Form1_Load(object sender, EventArgs e)
        {
            BindDomainIUpDown();

        }