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QueryableExtensions Class
Holds extension methods for IQueryable.
Inheritance Hierarchy
SystemObject
  Telerik.Windows.DataQueryableExtensions

Namespace: Telerik.Windows.Data
Assembly: Telerik.Windows.Data (in Telerik.Windows.Data.dll) Version: 2017.2.614.40 (2017.2.614.40)
Syntax
public static class QueryableExtensions

The QueryableExtensions type exposes the following members.

Methods
  NameDescription
Public methodStatic memberAggregate(IQueryable, IEnumerableAggregateFunction)
Calculates the results of given aggregates functions on a sequence of elements.
Public methodStatic memberAggregate(IQueryable, AggregateFunction)
Calculates the results of a given aggregate function on a sequence of elements.
Public methodStatic memberCount
Returns the number of elements in a sequence.
Public methodStatic memberElementAt
Returns the element at a specified index in a sequence.
Public methodStatic memberExcept
Produces the set difference of two sequences by using the default equality comparer to compare values.
Public methodStatic memberFirst
Returns the firsts item in a sequence.
Public methodStatic memberGroupBy(IQueryable, IEnumerableIGroupDescriptor)
Groups the elements of a sequence according to a specified groupDescriptors.
Public methodStatic memberGroupBy(IQueryable, LambdaExpression)
Groups the elements of a sequence according to a specified key selector function.
Public methodStatic memberOrderBy(IQueryable, LambdaExpression)
Sorts the elements of a sequence in ascending order according to a key.
Public methodStatic memberOrderBy(IQueryable, LambdaExpression, NullableListSortDirection)
Public methodStatic memberOrderByDescending
Sorts the elements of a sequence in descending order according to a key.
Public methodStatic memberPage
Pages through the elements of a sequence until the specified pageIndex using pageSize.
Public methodStatic memberSelect(IQueryable, IEnumerableISelectDescriptor)
Selects a sequence of objects based on a IEnumerable of SelectDescriptor.
Public methodStatic memberSelect(IQueryable, LambdaExpression)
Projects each element of a sequence into a new form.
Public methodStatic memberSelect(IQueryable, SelectDescriptorCollection)
Selects a sequence of objects based on a SelectDescriptorCollection.
Public methodStatic memberSkip
Bypasses a specified number of elements in a sequence and then returns the remaining elements.
Public methodStatic memberSort(IQueryable, IEnumerableISortDescriptor)
Sorts the elements of a sequence using the specified sort descriptors.
Public methodStatic memberSort(IQueryable, IEnumerableSortDescriptor)
Sorts the elements of a sequence using the specified sort descriptors.
Public methodStatic memberSort(IQueryable, SortDescriptorCollection)
Sorts the elements of a sequence using the specified sort descriptors.
Public methodStatic memberTake
Returns a specified number of contiguous elements from the start of a sequence.
Public methodStatic memberToIList
Public methodStatic memberUnion
Produces the set union of two sequences by using the default equality comparer.
Public methodStatic memberWhere(IQueryable, IEnumerableIFilterDescriptor)
Filters a sequence of values based on a collection of IFilterDescriptor.
Public methodStatic memberWhere(IQueryable, Expression)
Filters a sequence of values based on a predicate.
Public methodStatic memberWhere(IQueryable, CompositeFilterDescriptorCollection)
Filters a sequence of values based on a CompositeFilterDescriptorCollection.
Public methodStatic memberWhere(IQueryable, FilterDescriptorCollection)
Filters a sequence of values based on a collection of IFilterDescriptor.
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See Also