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IMongoCollectionExtensionsDistinctTDocument, TField Method (IMongoCollectionTDocument, ExpressionFuncTDocument, TField, FilterDefinitionTDocument, DistinctOptions, CancellationToken)

Gets the distinct values for a specified field.

Namespace:  MongoDB.Driver
Assembly:  MongoDB.Driver (in MongoDB.Driver.dll) Version: 2.15.0+f503bf610759c13f78cff9a3c01e91453185d2ed
public static IAsyncCursor<TField> Distinct<TDocument, TField>(
	this IMongoCollection<TDocument> collection,
	Expression<Func<TDocument, TField>> field,
	FilterDefinition<TDocument> filter,
	DistinctOptions options = null,
	CancellationToken cancellationToken = default


Type: MongoDB.DriverIMongoCollectionTDocument
The collection.
Type: System.Linq.ExpressionsExpressionFuncTDocument, TField
The field.
Type: MongoDB.DriverFilterDefinitionTDocument
The filter.
options (Optional)
Type: MongoDB.DriverDistinctOptions
The options.
cancellationToken (Optional)
Type: System.ThreadingCancellationToken
The cancellation token.

Type Parameters

The type of the document.
The type of the result.

Return Value

Type: IAsyncCursorTField
The distinct values for the specified field.

Usage Note

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