Create Index in MongoDb

This blog gives example, how to create index in Collection in Mongodb database

Introduction

There are different way available to create index in the MongoDB collection, here i have created in two way. One is using CreateIndex Method of collection and other is EnsureIndex method. See the examples below

 Object of collection

MongoCollection mongoCollection = mongoDatabase.GetCollection<Symbol>("Symbols");

Example-1 : Creating Collection Using CreateIndex() Method 

IndexKeysBuilder Key = IndexKeys.Ascending("abc");
IndexOptionsBuilder options = IndexOptions.SetUnique(true).SetDropDups(true);
mongoCollection.CreateIndex(Key, options);
mongoCollection.CreateIndex(Key, options);

 Example- 2: Creating Collection Using EnsureIndex

    

mongoCollection.EnsureIndex(new IndexKeysBuilder().Ascending("abc"), IndexOptions.SetUnique(true));