ProjectionDefinitionExtensions.Meta<TDocument> Method |
Combines an existing projection with a meta projection.
Namespace:
MongoDB.Driver
Assembly:
MongoDB.Driver (in MongoDB.Driver.dll) Version: 2.21.0+5a9c3311e158910b88195f290e6d4b1b2715d2b2
Syntax public static ProjectionDefinition<TDocument> Meta<TDocument>(
this ProjectionDefinition<TDocument> projection,
string field,
string metaFieldName
)
<ExtensionAttribute>
Public Shared Function Meta(Of TDocument) (
projection As ProjectionDefinition(Of TDocument),
field As String,
metaFieldName As String
) As ProjectionDefinition(Of TDocument)
[<ExtensionAttribute>]
static member Meta :
projection : ProjectionDefinition<'TDocument> *
field : string *
metaFieldName : string -> ProjectionDefinition<'TDocument>
Parameters
- projection
- Type: MongoDB.Driver.ProjectionDefinition<TDocument>
The projection. - field
- Type: System.String
The field. - metaFieldName
- Type: System.String
The meta field name.
Type Parameters
- TDocument
- The type of the document.
Return Value
Type:
ProjectionDefinition<TDocument>
A combined projection.
Usage Note
In Visual Basic and C#, you can call this method as an instance method on any object of type
ProjectionDefinition<TDocument>. 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).
See Also