如何根据linq数据的每一行中出现的字来排序列表?我从这里得到了一个正在给出正确输出的人的答案。下面是代码:按列表行中列出的字的出现次数linq
void Main()
{
List<SearchResult> list = new List<SearchResult>() {
new SearchResult(){ID=1,Title="Geo Prism GEO 1995 GEO* - ABS #16213899"},
new SearchResult(){ID=2,Title="Excavator JCB - ECU P/N: 728/35700"},
new SearchResult(){ID=3,Title="Geo Prism GEO 1995 - ABS #16213899"},
new SearchResult(){ID=4,Title="JCB Excavator JCB- ECU P/N: 728/35700"},
new SearchResult(){ID=5,Title="Geo Prism GEO,GEO 1995 - ABS #16213899 GEO"},
new SearchResult(){ID=6,Title="dog"},
};
var to_search = new[] { "Geo", "JCB" };
var result = from searchResult in list
let key_string = to_search.FirstOrDefault(ts => searchResult.Title.ToLower().Contains(ts.ToLower()))
group searchResult by key_string into Group
orderby Group.Count() descending
select Group;
result.ToList().Dump();
}
// Define other methods and classes here
public class SearchResult
{
public int ID { get; set; }
public string Title { get; set; }
}
我越来越喜欢
ID Title
-- ------
1 Geo Prism GEO 1995 GEO* - ABS #16213899
3 Geo Prism GEO 1995 - ABS #16213899
5 Geo Prism GEO,GEO 1995 - ABS #16213899 GEO
2 Excavator JCB - ECU P/N: 728/35700
4 JCB Excavator JCB- ECU P/N: 728/35700
6 dog
输出上面的输出就可以了。所有具有ord GEO的行都首先出现,因为它在大多数行中发现最大时间意味着GEO字在3行中找到,而JCB在两行中找到,因此接下来是JCB相关行。
我需要在整个数据上获得上述输出后再进行排序。那就是GEO行首先出现在哪个行的GEO字的最大时间。所以,我的输出看起来象下面这样:
ID Title
-- ------
5 Geo Prism GEO,GEO 1995 - ABS #16213899 GEO
1 Geo Prism GEO 1995 GEO* - ABS #16213899
3 Geo Prism GEO 1995 - ABS #16213899
4 JCB Excavator JCB- ECU P/N: 728/35700
2 Excavator JCB - ECU P/N: 728/35700
6 dog
我发现了一个LINQ查询,其对一个词的出现在字符串:
string text = @"Historically, the world of data and data the world of objects data" ;
string searchTerm = "data";
//Convert the string into an array of words
string[] source = text.Split(new char[] { '.', '?', '!', ' ', ';', ':', ',' }, StringSplitOptions.RemoveEmptyEntries);
var matchQuery = from word in source
where word.ToLowerInvariant() == searchTerm.ToLowerInvariant()
select word;
int wordCount = matchQuery.Count();
我从this url
得到它我怎么能使用上面的代码来排序我的标题?如何使用第二个排序计数在标题字段中单词的出现,结果我的输出看起来像:
ID Title
-- ------
5 Geo Prism GEO,GEO 1995 - ABS #16213899 GEO
1 Geo Prism GEO 1995 GEO* - ABS #16213899
3 Geo Prism GEO 1995 - ABS #16213899
4 JCB Excavator JCB- ECU P/N: 728/35700
2 Excavator JCB - ECU P/N: 728/35700
6 dog
我的优先搜索条件编辑解决了吗? – James 2012-07-09 20:29:26