MapReduceOptionsBuilder() couldnot be found. MongoDb join collections

Question

I am trying join two mongoDB collections in my c# code. and trying to follow this example.

But my code give me error on following line. saying MapReduceOptionsBuilder couldnot be found.

var options = new  MapReduceOptionsBuilder();
options.SetOutput(MapReduceOutput.Inline);
options.SetOutput(MapReduceOutput.Reduce("result"));
var result = cLifeExpectancy.MapReduce(life_expect_map, r, options);
result = cEconomicAssistance.MapReduce(us_econ_map, r, options);

I have following Nuget install in my project:

MongoDB.Bson
MongoDB.Driver
MongoDB.Driver.core

following References added.

using MongoDB.Bson;
using MongoDB.Bson.Serialization.Attributes;
using MongoDB.Driver;
using MongoDB.Driver.Builders;

Can someone tell me what am I missing? or share some other example of joining MongoDB collection in C#.net. or alternative of MapReduceOptionsBuilder.

score 0 · Answer 1 · edited May 23 '17 at 12:31

0

probably because that class is obsolete. Unless you're using older version of the driver

http://api.mongodb.com/csharp/1.11/html/ebbdbd35-63b2-7656-aca9-8c13a8c57aa4.htm

below link has an example of how to using MapReduceOptions.

Hope this helps MongoDB C# driver 2.0: How to get the result from MapReduceAsync

edited May 23 '17 at 12:31

Community

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1

answered Jun 21 '16 at 09:03

KaSh

175
1
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it still says "MapReduceOptionsBuilder" is absolut. use "MapReduceArgs" instead. how can i use MapReduceArgs to get the same results. – Fazal Wahid Jun 22 '16 at 06:00
Added the link in the answer instead – KaSh Jun 22 '16 at 08:18

MapReduceOptionsBuilder() couldnot be found. MongoDb join collections

1 Answers1