通用列表中的最小值和最大值 [英] Minimum and Maximum value from Generic List

问题描述

朋友们，
我有一个包含许多属性的酒店类.当我从数据库中检索所有酒店数据时，我将它们存储在通用列表"对象中.

现在，我想要两个属性，分别是LowestPrice和HiestPrice.我想直接从通用列表中获取Minimum(LowestPrice)和Maximum(HiestPrice).

类似于HotelList.Min();

现在，我在项目中实现了以下逻辑，但是我不想使用foreach循环.

Hi friends,
I have one Hotel class that contains many properties. When I retrieve all hotels data from database, I store them in Generic List object.

Now what I want that I have two properties called LowestPrice and HiestPrice. I want to get Minimum(LowestPrice) and Maximum(HiestPrice) from generic list directly.

Something like HotelList.Min();

Right now I have following logic implemented in my project, but I dont want to use foreach loop.

HotelController h1 = null;
                    HotelController h2 = null;
                    foreach (HotelController h in hList)
                    {
                        if (h1 == null && h2 == null)
                        {
                            h1 = h;
                            h2 = h;
                            continue;
                        }
                        if (h.CheapestRate < h1.CheapestRate)
                        {
                            h1 = h;
                        }
                        if (h.CheapestRate > h2.CheapestRate)
                        {
                            h2 = h;
                        }
                    }
                    minPrice = Convert.ToInt32(h1.CheapestRate.ToString());
                    maxPrice = Convert.ToInt32(h2.CheapestRate.ToString());

谢谢和问候
Imrankhan

Thanks and Regard
Imrankhan

推荐答案

如果您使用的是.net 2.0，则可能会有所帮助:

Hi,
If you are using .net 2.0 this might be helpful: http://stackoverflow.com/questions/152613/c-getting-maximum-and-minimum-values-of-arbitrary-properties-of-all-items-in-a[^]

L

我添加了对LinqBridge.dll的引用，并且我正在使用Framework 2.0，但仍然无法使用Linq方法.
我正在做这样的事情.
double d = hList.Max(l => l.CheapestRate);
但它告诉我无效的表达式>

I add reference for LinqBridge.dll and I am working on framework 2.0 but still I can''t able to use Linq method.
I am doing something like this.
double d = hList.Max(l => l.CheapestRate);
but it tells me invalid expression >

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