IndexKeysDefinitionExtensionsDescendingTDocument Method (IndexKeysDefinitionTDocument, ExpressionFuncTDocument, Object)

Combines an existing index keys definition with a descending index key definition.

Namespace: MongoDB.Driver
Assembly: MongoDB.Driver (in MongoDB.Driver.dll) Version: 2.20.0+ee01960089f28ea1b501690df5fc9f6318a70242

Syntax

Copy

public static IndexKeysDefinition<TDocument> Descending<TDocument>(
	this IndexKeysDefinition<TDocument> keys,
	Expression<Func<TDocument, Object>> field
)

<ExtensionAttribute>
Public Shared Function Descending(Of TDocument) ( 
	keys As IndexKeysDefinition(Of TDocument),
	field As Expression(Of Func(Of TDocument, Object))
) As IndexKeysDefinition(Of TDocument)

[<ExtensionAttribute>]
static member Descending : 
        keys : IndexKeysDefinition<'TDocument> * 
        field : Expression<Func<'TDocument, Object>> -> IndexKeysDefinition<'TDocument>

Parameters

keys: Type: MongoDB.DriverIndexKeysDefinitionTDocument
The keys.
field: Type: System.Linq.ExpressionsExpressionFuncTDocument, Object
The field.

Type Parameters

TDocument: The type of the document.

Return Value

Type: IndexKeysDefinitionTDocument
A combined index keys definition.

Usage Note

In Visual Basic and C#, you can call this method as an instance method on any object of type IndexKeysDefinitionTDocument. When you use instance method syntax to call this method, omit the first parameter. For more information, see Extension Methods (Visual Basic) or Extension Methods (C# Programming Guide).

Reference

IndexKeysDefinitionExtensions Class

Descending Overload

MongoDB.Driver Namespace