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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
)

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