| MongoCollectionEnsureIndex Method (IMongoIndexKeys) | 
 Note: This API is now obsolete.
            Ensures that the desired index exists and creates it if it does not.
            
 
    Namespace: 
   MongoDB.Driver
    Assembly:
   MongoDB.Driver.Legacy (in MongoDB.Driver.Legacy.dll) Version: 2.12.2+a4a3888f4fb51bb518b1eb5002effc2d47f2ea6a
 Syntax
Syntax[ObsoleteAttribute("Use CreateIndex instead.")]
public virtual void EnsureIndex(
	IMongoIndexKeys keys
)<ObsoleteAttribute("Use CreateIndex instead.")>
Public Overridable Sub EnsureIndex ( 
	keys As IMongoIndexKeys
)[<ObsoleteAttribute("Use CreateIndex instead.")>]
abstract EnsureIndex : 
        keys : IMongoIndexKeys -> unit 
[<ObsoleteAttribute("Use CreateIndex instead.")>]
override EnsureIndex : 
        keys : IMongoIndexKeys -> unit Parameters
- keys
- Type: MongoDB.DriverIMongoIndexKeys
 The indexed fields (usually an IndexKeysDocument or constructed using the IndexKeys builder).
 See Also
See Also