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QueryBuilderTDocumentExistsTMember Method
Tests that an element of that name does or does not exist (see $exists).

Namespace: MongoDB.Driver.Builders
Assembly: MongoDB.Driver.Legacy (in MongoDB.Driver.Legacy.dll) Version: 2.4.1
Syntax
public IMongoQuery Exists<TMember>(
	Expression<Func<TDocument, TMember>> memberExpression
)

Parameters

memberExpression
Type: System.Linq.ExpressionsExpressionFuncTDocument, TMember
The member expression representing the element to test.

Type Parameters

TMember
The member type.

Return Value

Type: IMongoQuery
An IMongoQuery.
See Also