Create Index in MongoDb

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));