[英]How to convert nested foreach loop into LINQ query in C#
How to convert nested foreach loop into LINQ query in C# and i want to return list after querying the result.如何在 C# 中将嵌套的 foreach 循环转换为 LINQ 查询,我想在查询结果后返回列表。 List will return vale and description.列表将返回值和描述。 below code is working fine but i need to convert these 2 foreach loops into a single LINQ query.下面的代码工作正常,但我需要将这 2 个 foreach 循环转换为单个 LINQ 查询。
List<ListItem> listCodes = new List<ListItem>();
foreach (var staticValueGroupMember in staticValueGroupMembers)
{
string description = string.Empty;
if (staticValueGroupMember != null)
{
foreach (var staticValue in staticValues)
{
if (staticValue.Value == staticValueGroupMember.MemberCode.ToString())
{
description = staticValue.Description;
break;
}
}
listCodes.Add(new ListItem() { Value = staticValueGroupMember.MemberCode.ToString(), Description = description });
}
}
return listCodes;
This is pretty much a direct translation.这几乎是直接翻译。
List<ListItem> listCodes =
(
from staticValueGroupMember in staticValueGroupMembers
where staticValueGroupMember != null
join staticValue in staticValues
on staticValueGroupMember.MemberCode.ToString() equals staticValue.Value
select new ListItem()
{
Value = staticValueGroupMember.MemberCode.ToString(),
Description = staticValue.Description
}
).ToList();
Try the code below:试试下面的代码:
var result = staticValueGroupMembers
.Where(gm => gm != null)
.Join(staticValues,
outer => outer.MemberCode.ToString(),
inner => inner.Value,
(outer, inner) => new ListItem()
{
Value = outer.MemberCode.ToString(),
Description = inner.Description
})
.ToList();
声明:本站的技术帖子网页,遵循CC BY-SA 4.0协议,如果您需要转载,请注明本站网址或者原文地址。任何问题请咨询:yoyou2525@163.com.