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IMongoCollectionExtensionsDistinctTDocument, TField Method (IMongoCollectionTDocument, FieldDefinitionTDocument, TField, ExpressionFuncTDocument, Boolean, DistinctOptions, CancellationToken)

Gets the distinct values for a specified field.

Namespace:  MongoDB.Driver
Assembly:  MongoDB.Driver (in MongoDB.Driver.dll) Version: 2.10.0+569905ff5e778c38ea19d9d0392496a83e1704ed
public static IAsyncCursor<TField> Distinct<TDocument, TField>(
	this IMongoCollection<TDocument> collection,
	FieldDefinition<TDocument, TField> field,
	Expression<Func<TDocument, bool>> filter,
	DistinctOptions options = null,
	CancellationToken cancellationToken = null


Type: MongoDB.DriverIMongoCollectionTDocument
The collection.
Type: MongoDB.DriverFieldDefinitionTDocument, 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: 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