Question

我必须搜索用户可以输入Order Number或keyword的字段。关键字需要在MemberOrderLineItem ItemName值中进行搜索。

现在我正在为这样的订单号做。

memberOrderInformationList = memberOrderInformationList
    .Where(x => x.OrderNumber.Contains(searchString))
    .OrderByDescending(x => x.OrderDate)
    .ToList();

但是如何包含MemberOrderLineItem ItemName值？

public class MemberOrderInformation
{
    public string OrderNumber { get; set; }
    public DateTime? OrderDate { get; set; }
    ...
    public List<MemberOrderLineItem> LineItems { get; set; }
    public MemberOrderInformation()
    {            
        LineItems = new List<MemberOrderLineItem>();        
    }
}

[Serializable]
public class MemberOrderLineItem
{
    public string OrderNumber { get; set; }
    public int OrderLineNumber { get; set; }
    public string ItemName { get; set; }
    public string Status { get; set; }
    ...
    ...
}

Answer 1

试试这个

memberOrderInformationList = memberOrderInformationList.Where(x=>x.OrderNumber.Contains(searchString)
|| x.LineItems.any(p => p.ItemName.Contains(searchString))
).OrderByDescending(x => x.OrderDate).ToList();

Answer 2

如果我正确理解了这个问题，你可以试试

memberOrderInformationList = 
memberOrderInformationList.Where(x=>x.OrderNumber.Contains(searchString) 
|| x.LineItems.FirstOrDefault(l => l.ItemName.Contains(searchString)) != null)
.OrderByDescending(x => x.OrderDate).ToList();

编辑：看看其他答案，使用.Any()反对.FirstOrDefault是一个更清晰的选择，尽管两者都应该同样有效。

Answer 3

你可以试试这个：

#!/usr/bin/perl
use warnings;
use strict;

my @chr;
my $input;
open ($input, "$ARGV[0]") || die;
while (<$input>) {
    my @r = split(/\t/);
    my $snps = $r[0];
    my $pval = $r[1];
    my $pmid = $r[2];
    my $chrpos = $r[3];
    my $chrid = $r[4];
    for ($chrid) {
        push (@chr, $chrid);
    }
}

close $input;

Answer 4

 memberOrderInformationList = memberOrderInformationList
                .Where(x => x.OrderNumber.Contains(searchString))
                .OrderByDescending(x => x.OrderDate)
                .Where(x=>x.LineItems.Any(x=>x.ItemName == "hej"))
                .ToList();

如何在c＃中的列表值中搜索列表

4 个答案: