UpdateDefinitionExtensionsUnsetTDocument Method (UpdateDefinitionTDocument, ExpressionFuncTDocument, Object)

Combines an existing update with an unset operator.

Namespace: MongoDB.Driver
Assembly: MongoDB.Driver (in MongoDB.Driver.dll) Version: 2.21.0+5a9c3311e158910b88195f290e6d4b1b2715d2b2

Syntax

Copy

public static UpdateDefinition<TDocument> Unset<TDocument>(
	this UpdateDefinition<TDocument> update,
	Expression<Func<TDocument, Object>> field
)

<ExtensionAttribute>
Public Shared Function Unset(Of TDocument) ( 
	update As UpdateDefinition(Of TDocument),
	field As Expression(Of Func(Of TDocument, Object))
) As UpdateDefinition(Of TDocument)

[<ExtensionAttribute>]
static member Unset : 
        update : UpdateDefinition<'TDocument> * 
        field : Expression<Func<'TDocument, Object>> -> UpdateDefinition<'TDocument>

Parameters

update: Type: MongoDB.DriverUpdateDefinitionTDocument
The update.
field: Type: System.Linq.ExpressionsExpressionFuncTDocument, Object
The field.

Type Parameters

TDocument: The type of the document.

Return Value

Type: UpdateDefinitionTDocument
A combined update.

Usage Note

In Visual Basic and C#, you can call this method as an instance method on any object of type UpdateDefinitionTDocument. 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

UpdateDefinitionExtensions Class

Unset Overload

MongoDB.Driver Namespace