ProjectionDefinitionExtensions.Meta<TDocument> Method

Combines an existing projection with a meta projection.

Namespace: MongoDB.Driver
Assembly: MongoDB.Driver (in MongoDB.Driver.dll) Version: 2.16.0+eeafbea0921243a5868b81984e1083a07c1f75bc

Syntax

Copy

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).

Reference

ProjectionDefinitionExtensions Class