[英]ASP.NET Core SQL Linq using list of strings
I have a list of strings like this 我有一个这样的字符串列表
list = {a,b,c}
I would like to compare it in the database but I'm not sure how to go about doing that. 我想在数据库中进行比较,但是我不确定该怎么做。 This is my linq query:
这是我的linq查询:
var initialData = (from item in dbContext.DocumentCategories
join df in dbContext.DocumentFields
on item.Id equals df.DocumentCategoriesId
join dfs in dbContext.DocumentFieldsStore
on df.Id equals dfs.DocumentFieldsId
select new SearchDocumentsListViewModel
{
CategoryId = item.Id,
DocumentId = dfs.DocumentsId,
FieldId = df.Id,
Data = dfs.Data
})
.ToList();
initialData = initialData
.Where(u => u.Data.Contains(list))
.ToList();
Currently its showing me this error: 目前,它向我显示此错误:
cannot convert from 'System.Collections.Generic.List' to 'char'
无法从“ System.Collections.Generic.List”转换为“ char”
Not sure what that means 不确定那是什么意思
There is a Where
statement at the end that has the Contains
expression backwards. 在末尾有一个
Where
语句,它向后Contains
表达式。
.Where(u => u.Data.Contains(list)
This line of code explained: u.Data
is being treated as a char[]
and a char
cannot contain a list. 这行代码说明:
u.Data
被视为char[]
并且char
不能包含列表。
This line of code needs to have the contains flipped around to: 这行代码需要将包含内容翻转到:
.Where(u => list.Contains(u.Data)
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