IndexKeysTDocumentWildcard Method  | 
 
            Sets a wildcard key to the index.
            
 
    Namespace: 
   MongoDB.Driver.Builders
    Assembly:
   MongoDB.Driver.Legacy (in MongoDB.Driver.Legacy.dll) Version: 2.19.1+3a2a09dd959482f665ffbb5df2557ec541597af4
Syntaxpublic static IndexKeysBuilder<TDocument> Wildcard(
	Expression<Func<TDocument, Object>> memberExpression = null
)
Public Shared Function Wildcard ( 
	Optional memberExpression As Expression(Of Func(Of TDocument, Object)) = Nothing
) As IndexKeysBuilder(Of TDocument)
static member Wildcard : 
        ?memberExpression : Expression<Func<'TDocument, Object>> 
(* Defaults:
        let _memberExpression = defaultArg memberExpression null
*)
-> IndexKeysBuilder<'TDocument> 
Parameters
- memberExpression (Optional)
 - Type: System.Linq.ExpressionsExpressionFuncTDocument, Object
The member expression representing the wildcard key name. If the wildcard name is empty, the generated key will be `All field paths`, otherwise `A single field path`. 
Return Value
Type: 
IndexKeysBuilderTDocument
            The builder (so method calls can be chained).
            
See Also