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DbExpressionBuilder.ToSortClauseDescending Method (DbExpression, String)

.NET Framework 4.5

Creates a new DbSortClause with a descending sort order and the specified collation.

Namespace:  System.Data.Common.CommandTrees.ExpressionBuilder
Assembly:  System.Data.Entity (in System.Data.Entity.dll)

public static DbSortClause ToSortClauseDescending(
	this DbExpression key,
	string collation


Type: System.Data.Common.CommandTrees.DbExpression

The expression that defines the sort key.

Type: System.String

The collation to sort under.

Return Value

Type: System.Data.Common.CommandTrees.DbSortClause
A new sort clause with the given sort key and collation, and descending sort order.

Usage Note

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


key is null.


collation is empty or contains only space characters.


key does not have an order-comparable result type.

.NET Framework

Supported in: 4.5

Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

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