| MongoCollectionEnsureIndex Method (String) | 
 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: 2.5.0+57.Branch.master.Sha.6a4e00a2d91090c65a9b11364b9ebfdb9c7da076
 Syntax
Syntax[ObsoleteAttribute("Use CreateIndex instead.")]
public virtual void EnsureIndex(
	params string[] keyNames
)<ObsoleteAttribute("Use CreateIndex instead.")>
Public Overridable Sub EnsureIndex ( 
	ParamArray keyNames As String()
)[<ObsoleteAttribute("Use CreateIndex instead.")>]
abstract EnsureIndex : 
        keyNames : string[] -> unit 
[<ObsoleteAttribute("Use CreateIndex instead.")>]
override EnsureIndex : 
        keyNames : string[] -> unit Parameters
- keyNames
- Type: SystemString
 The names of the indexed fields.
 See Also
See Also