Class QueryableExtension

Class QueryableExtension.

Inheritance
System.Object
QueryableExtension
Namespace: Radzen
Assembly: Radzen.Blazor.dll
Syntax
public static class QueryableExtension : object

Methods

AsODataEnumerable<T>(IEnumerable<T>)

Ases the o data enumerable.

Declaration
public static ODataEnumerable<T> AsODataEnumerable<T>(this IEnumerable<T> source)
Parameters
Type Name Description
IEnumerable<T> source

The source.
Returns
Type Description
ODataEnumerable<T>

ODataEnumerable<T>.
Type Parameters
Name Description
T

Cast(IQueryable, Type)

Converts the elements of an to the specified type.

Declaration
public static IQueryable Cast(this IQueryable source, Type type)
Parameters
Type Name Description
IQueryable source

The that contains the elements to be converted.
Type type

The type to convert the elements of source to.
Returns
Type Description
IQueryable

An that contains each element of the source sequence converted to the specified type.

Distinct(IQueryable)

Returns distinct elements from a sequence by using the default equality comparer to compare values.

Declaration
public static IQueryable Distinct(this IQueryable source)
Parameters
Type Name Description
IQueryable source

The sequence to remove duplicate elements from.
Returns
Type Description
IQueryable

An that contains distinct elements from the source sequence.

FirstOrDefault(IQueryable)

Returns the first element of a sequence, or a default value if the sequence contains no elements.

Declaration
public static dynamic FirstOrDefault(this IQueryable source)
Parameters
Type Name Description
IQueryable source

The to return the first element of.
Returns
Type Description
System.Object

default if source is empty; otherwise, the first element in source.

GroupByMany<T>(IQueryable<T>, String[])

Projects each element of a sequence to an IEnumerable and flattens the resulting sequences into one sequence.

Declaration
public static IQueryable<GroupResult> GroupByMany<T>(this IQueryable<T> source, string[] properties)
Parameters
Type Name Description
IQueryable<T> source
System.String[] properties
Returns
Type Description
IQueryable<GroupResult>
Type Parameters
Name Description
T

IsEnumerable(Type)

Gets if type is IEnumerable.

Declaration
public static bool IsEnumerable(Type type)
Parameters
Type Name Description
Type type
Returns
Type Description
System.Boolean

OrderBy(IQueryable, String)

Sorts the elements of a sequence in ascending or descending order according to a key.

Declaration
public static IQueryable OrderBy(this IQueryable source, string selector = null)
Parameters
Type Name Description
IQueryable source
System.String selector
Returns
Type Description
IQueryable

A whose elements are sorted according to the specified selector.

OrderBy<T>(IQueryable<T>, String)

Sorts the elements of a sequence in ascending or descending order according to a key.

Declaration
public static IOrderedQueryable<T> OrderBy<T>(this IQueryable<T> source, string selector = null)
Parameters
Type Name Description
IQueryable<T> source
System.String selector
Returns
Type Description
IOrderedQueryable<T>

A whose elements are sorted according to the specified selector.
Type Parameters
Name Description
T

SelectMany(IQueryable, String)

Projects each element of a sequence to an IEnumerable and flattens the resulting sequences into one sequence.

Declaration
public static IQueryable SelectMany(this IQueryable source, string propertyName)
Parameters
Type Name Description
IQueryable source
System.String propertyName
Returns
Type Description
IQueryable

SelectManyRecursive<T>(IEnumerable<T>, Func<T, IEnumerable<T>>)

Selects the many recursive.

Declaration
public static IEnumerable<T> SelectManyRecursive<T>(this IEnumerable<T> source, Func<T, IEnumerable<T>> selector)
Parameters
Type Name Description
IEnumerable<T> source

The source.
Func<T, IEnumerable<T>> selector

The selector.
Returns
Type Description
IEnumerable<T>

IEnumerable<T>.
Type Parameters
Name Description
T

ToFilterString<T>(IEnumerable<RadzenDataGridColumn<T>>)

Converts to filterstring.

Declaration
public static string ToFilterString<T>(this IEnumerable<RadzenDataGridColumn<T>> columns)
Parameters
Type Name Description
IEnumerable<RadzenDataGridColumn<T>> columns

The columns.
Returns
Type Description
System.String

System.String.
Type Parameters
Name Description
T

ToFilterString<T>(RadzenDataFilter<T>)

Converts a RadzenDataFilter to a Linq-compatibly filter string

Declaration
public static string ToFilterString<T>(this RadzenDataFilter<T> dataFilter)
Parameters
Type Name Description
RadzenDataFilter<T> dataFilter

The RadzenDataFilter component
Returns
Type Description
System.String

A Linq-compatible filter string
Type Parameters
Name Description
T

The type that is being filtered

ToList(IQueryable)

Converts to list.

Declaration
public static IList ToList(IQueryable query)
Parameters
Type Name Description
IQueryable query

The query.
Returns
Type Description
IList

IList.

ToODataFilterString<T>(IEnumerable<RadzenDataGridColumn<T>>)

Converts to odatafilterstring.

Declaration
public static string ToODataFilterString<T>(this IEnumerable<RadzenDataGridColumn<T>> columns)
Parameters
Type Name Description
IEnumerable<RadzenDataGridColumn<T>> columns

The columns.
Returns
Type Description
System.String

System.String.
Type Parameters
Name Description
T

ToODataFilterString<T>(RadzenDataFilter<T>)

Converts to OData filter expression.

Declaration
public static string ToODataFilterString<T>(this RadzenDataFilter<T> dataFilter)
Parameters
Type Name Description
RadzenDataFilter<T> dataFilter

The DataFilter.
Returns
Type Description
System.String

System.String.
Type Parameters
Name Description
T

Where(IQueryable, IEnumerable<FilterDescriptor>, LogicalFilterOperator, FilterCaseSensitivity)

Filters using the specified filter descriptors.

Declaration
public static IQueryable Where(this IQueryable source, IEnumerable<FilterDescriptor> filters, LogicalFilterOperator logicalFilterOperator, FilterCaseSensitivity filterCaseSensitivity)
Parameters
Type Name Description
IQueryable source
IEnumerable<FilterDescriptor> filters
LogicalFilterOperator logicalFilterOperator
FilterCaseSensitivity filterCaseSensitivity
Returns
Type Description
IQueryable

Where(IQueryable, String, String, StringFilterOperator, FilterCaseSensitivity)

Wheres the specified filters.

Declaration
public static IQueryable Where(this IQueryable source, string property, string value, StringFilterOperator op, FilterCaseSensitivity cs)
Parameters
Type Name Description
IQueryable source

The source.
System.String property

The property.
System.String value

The value.
StringFilterOperator op

The StringFilterOperator.
FilterCaseSensitivity cs

The FilterCaseSensitivity.
Returns
Type Description
IQueryable

IQueryable<T>.

Where<T>(IQueryable<T>, IEnumerable<RadzenDataGridColumn<T>>)

Wheres the specified columns.

Declaration
public static IQueryable<T> Where<T>(this IQueryable<T> source, IEnumerable<RadzenDataGridColumn<T>> columns)
Parameters
Type Name Description
IQueryable<T> source

The source.
IEnumerable<RadzenDataGridColumn<T>> columns

The columns.
Returns
Type Description
IQueryable<T>

IQueryable<T>.
Type Parameters
Name Description
T

Where<T>(IQueryable<T>, IEnumerable<CompositeFilterDescriptor>, LogicalFilterOperator, FilterCaseSensitivity)

Wheres the specified filters.

Declaration
public static IQueryable<T> Where<T>(this IQueryable<T> source, IEnumerable<CompositeFilterDescriptor> filters, LogicalFilterOperator logicalFilterOperator, FilterCaseSensitivity filterCaseSensitivity)
Parameters
Type Name Description
IQueryable<T> source
IEnumerable<CompositeFilterDescriptor> filters
LogicalFilterOperator logicalFilterOperator
FilterCaseSensitivity filterCaseSensitivity
Returns
Type Description
IQueryable<T>

IQueryable<T>.
Type Parameters
Name Description
T

Where<T>(IQueryable<T>, IEnumerable<FilterDescriptor>, LogicalFilterOperator, FilterCaseSensitivity)

Filters using the specified filter descriptors.

Declaration
public static IQueryable<T> Where<T>(this IQueryable<T> source, IEnumerable<FilterDescriptor> filters, LogicalFilterOperator logicalFilterOperator, FilterCaseSensitivity filterCaseSensitivity)
Parameters
Type Name Description
IQueryable<T> source
IEnumerable<FilterDescriptor> filters
LogicalFilterOperator logicalFilterOperator
FilterCaseSensitivity filterCaseSensitivity
Returns
Type Description
IQueryable<T>
Type Parameters
Name Description
T

Where<T>(IQueryable<T>, RadzenDataFilter<T>)

Wheres the specified filters.

Declaration
public static IQueryable<T> Where<T>(this IQueryable<T> source, RadzenDataFilter<T> dataFilter)
Parameters
Type Name Description
IQueryable<T> source

The source.
RadzenDataFilter<T> dataFilter

The DataFilter.
Returns
Type Description
IQueryable<T>

IQueryable<T>.
Type Parameters
Name Description
T

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