在。net中mongodb中的全文搜索

I have to search contents in all documents in particular collection of mongodb in .net mvc . I have tried with mongodb shell by creating index successfully like here .

我必须在。net mvc中搜索所有文档中的内容，特别是mongodb的集合。我尝试过mongodb shell，成功地创建了索引。

db.collection_name.createIndex( { subject: "text" } )

db.collection_name.find( { $text: { $search: "search_word" } } )

It works fine . but when i put it in .net that gives me error . I googled it and got following solution for indexing .

它将正常工作。但是当我把它放到。net时，它会给我错误。我搜索了一下，找到了索引的解决方案。

 collection.EnsureIndex(new IndexKeysBuilder().Ascending("subject"));

now how can i run this query db.collection_name.find( { $text: { $search: "coffee" } } ) .

现在如何运行这个查询db.collection_name。查找({$text: {$search:“coffee”})。

I am trying in .net as following way .

我正在。net中尝试按照以下方式。

collection.CreateIndex("subject":"text");

var query = collection.Find({ $text: { $search: "coffe" }});

but I am getting error on first line "represents text as series of unicode ....syntax error "

但我得到错误第一行“将文本表示为一系列unicode ....语法错误”

2nd line error "There is no argument given that corresponds to required formal parameters " And "unexpected character $ ".

第2行错误“没有给出对应于所需形式参数的参数”和“意外字符$”。

any suggestion will be appreciated .

如有任何建议，我们将不胜感激。

2 个解决方案

#1

I could create text indexes with this command:

我可以使用以下命令创建文本索引:

collection.Indexes.CreateOne(Builders<searchFileByAuthor>.IndexKeys.Text(x=>x.subject));

And than i could query index this way:

我可以这样查询索引:

collection.Find(Builders<searchFileByAuthor>.Filter.Text("coffe")).ToList();

searchFileByAuthor is just my fake class with subject field:

searchFileByAuthor是我的伪类，包含主题字段:

public class searchFileByAuthor
{
    public int Id { get; set; } 
    public string subject { get; set; } 
}

#2

public List<T> FindSearch<T>(string collectionName, string searchWord) {
    IMongoQuery query = Query.Text(searchWord);
    List<T> find = getCollection<T>(collectionName).Find(query).ToList();
    return find;
}

#1