如何使这个函数代码更简洁，而不是使用多个foreach循环？ [英] How can I make this function code more concise rather than using multiple foreach loop ?

问题描述

private void RenumberPreferredSequence(Item record)
        {
            foreach (var itemVendor in record.ItemVendors)
            {
                itemVendor.PreferredSequence = 0;
            }

            foreach (var itemVendor in record.ItemVendors)
            {
                if (itemVendor.PrimaryVendor)
                {
                    itemVendor.PreferredSequence = 1;
                }
            }

            var seq = 2;

            foreach (var itemVendor in record.ItemVendors)
            {
                if (!itemVendor.PrimaryVendor)
                {
                    itemVendor.PreferredSequence = seq;
                    seq = seq + 1;
                }
            }
        }

我尝试了什么：



尝试使用1或2个foreach循环，但无法达到我的预期。

首先我应该制作所有ItemVendor .PreferredSequence = 0;

第二我应该只做一个

What I have tried:

Tried using the 1 or 2 foreach loops but unable to achieve what i am expecting.
Like first i should have to make all ItemVendor.PreferredSequence = 0;
Second I should have to make only one

ItemVendor.PreferredSequence = 1 which is a PrimaryVendor
Third i should have to set the sequence on other items in collection

推荐答案

不确定这是否是您想要的，但请这样想：

Not sure if this is what you want, but think so:

private void RenumberPreferredSequence(Item record)
        {
            var seq = 2;
            foreach (var itemVendor in record.ItemVendors)
            {
                itemVendor.PreferredSequence = 0;
                if (itemVendor.PrimaryVendor)
                {
                    itemVendor.PreferredSequence = seq++;
                }
            }
          }

您可以在一行代码中完成大部分工作。

You can do most of the work in one line of code.

private void RenumberPreferredSequence(Item record)
  {
    int seq = 2;
    foreach(var itemVendor in record.ItemVendors)
     {
       itemVendor.PreferredSequence = itemVendor.PrimaryVendor ? 1 : seq++;
     }
  }

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