Queryable.OrderDescending Method
Definition
Important
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Overloads
| OrderDescending<T>(IQueryable<T>) |
Sorts the elements of a sequence in descending order. |
| OrderDescending<T>(IQueryable<T>, IComparer<T>) |
Sorts the elements of a sequence in descending order. |
OrderDescending<T>(IQueryable<T>)
- Source:
- Queryable.cs
- Source:
- Queryable.cs
- Source:
- Queryable.cs
Sorts the elements of a sequence in descending order.
public:
generic <typename T>
[System::Runtime::CompilerServices::Extension]
static System::Linq::IOrderedQueryable<T> ^ OrderDescending(System::Linq::IQueryable<T> ^ source);public static System.Linq.IOrderedQueryable<T> OrderDescending<T> (this System.Linq.IQueryable<T> source);static member OrderDescending : System.Linq.IQueryable<'T> -> System.Linq.IOrderedQueryable<'T><Extension()>
Public Function OrderDescending(Of T) (source As IQueryable(Of T)) As IOrderedQueryable(Of T)Type Parameters
- T
The type of the elements of source.
Parameters
- source
- IQueryable<T>
A sequence of values to order.
Returns
An IOrderedEnumerable<TElement> whose elements are sorted.
Exceptions
source is null.
Remarks
This method has at least one parameter of type Expression<TDelegate> whose type argument is one of the Func<T,TResult> types. For these parameters, you can pass in a lambda expression and it will be compiled to an Expression<TDelegate>.
The Order<T>(IQueryable<T>) method generates a MethodCallExpression that represents
calling Order<T>(IEnumerable<T>) itself as a constructed generic method.
It then passes the MethodCallExpression to the CreateQuery<TElement>(Expression) method
of the IQueryProvider represented by the Provider property of the source
parameter. The result of calling CreateQuery<TElement>(Expression) is cast to
type IOrderedQueryable<T> and returned.
The query behavior that occurs as a result of executing an expression tree
that represents calling Order<T>(IEnumerable<T>)
depends on the implementation of the source parameter.
The expected behavior is that it sorts the elements of source by itself.
Applies to
OrderDescending<T>(IQueryable<T>, IComparer<T>)
- Source:
- Queryable.cs
- Source:
- Queryable.cs
- Source:
- Queryable.cs
Sorts the elements of a sequence in descending order.
public:
generic <typename T>
[System::Runtime::CompilerServices::Extension]
static System::Linq::IOrderedQueryable<T> ^ OrderDescending(System::Linq::IQueryable<T> ^ source, System::Collections::Generic::IComparer<T> ^ comparer);public static System.Linq.IOrderedQueryable<T> OrderDescending<T> (this System.Linq.IQueryable<T> source, System.Collections.Generic.IComparer<T> comparer);static member OrderDescending : System.Linq.IQueryable<'T> * System.Collections.Generic.IComparer<'T> -> System.Linq.IOrderedQueryable<'T><Extension()>
Public Function OrderDescending(Of T) (source As IQueryable(Of T), comparer As IComparer(Of T)) As IOrderedQueryable(Of T)Type Parameters
- T
The type of the elements of source.
Parameters
- source
- IQueryable<T>
A sequence of values to order.
- comparer
- IComparer<T>
An IComparer<T> to compare elements.
Returns
An IOrderedEnumerable<TElement> whose elements are sorted.
Exceptions
source is null.
Remarks
This method has at least one parameter of type Expression<TDelegate> whose type argument is one of the Func<T,TResult> types. For these parameters, you can pass in a lambda expression and it will be compiled to an Expression<TDelegate>.
The Order<T>(IQueryable<T>) method generates a MethodCallExpression that represents
calling Order<T>(IEnumerable<T>) itself as a constructed generic method.
It then passes the MethodCallExpression to the CreateQuery<TElement>(Expression) method
of the IQueryProvider represented by the Provider property of the source
parameter. The result of calling CreateQuery<TElement>(Expression) is cast to
type IOrderedQueryable<T> and returned.
The query behavior that occurs as a result of executing an expression tree
that represents calling Order<T>(IEnumerable<T>)
depends on the implementation of the source parameter.
The expected behavior is that it sorts the elements of source by itself.
