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IMongoCollectionExtensionsDistinctAsyncTDocument, TField Method (IMongoCollectionTDocument, ExpressionFuncTDocument, TField, ExpressionFuncTDocument, Boolean, DistinctOptions, CancellationToken)

Gets the distinct values for a specified field.

Namespace:  MongoDB.Driver
Assembly:  MongoDB.Driver (in MongoDB.Driver.dll) Version: 2.17.0+b316340e6cc3a8bfc8638dc31b54fbbfe41bfcb2
public static Task<IAsyncCursor<TField>> DistinctAsync<TDocument, TField>(
	this IMongoCollection<TDocument> collection,
	Expression<Func<TDocument, TField>> field,
	Expression<Func<TDocument, bool>> filter,
	DistinctOptions options = null,
	CancellationToken cancellationToken = default


Type: MongoDB.DriverIMongoCollectionTDocument
The collection.
Type: System.Linq.ExpressionsExpressionFuncTDocument, TField
The field.
Type: System.Linq.ExpressionsExpressionFuncTDocument, Boolean
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: TaskIAsyncCursorTField
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