How to use MongoRegex (MongoDB C# Driver)

Question

Has anyone have any idea how to use MongoRegex for the document search?

I attempted this, but returns nothing back:

var spec = new Document();
spec.A         


        

Answer 1

After digging the source code, I finally found the answer :)

var spec = new Document();
spec.Add("Name", new MongoRegex(".*" + searchKey + ".*", "i"));
collection.Find(spec)

Answer 2

you just want a simple prefix query. Your regex is then ^ + searchKey. Also, this form will allow mongodb to use an index on Name.

var spec = new Document("Name", new MongoRegex(string.Format("^{0}",searchKey), "i"));
collection.Find(spec)

Answer 3

I think you need to not include the "/"s in C#, i.e.,

spec.Add("Name", new MongoRegex(searchKey + "*", "i"));