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Class ItemRange

A helper class for parsing the Range http header on incoming requests and writing the Content-Range http header on outgoing responses.

Inheritance
System.Object
ItemRange
Inherited Members
System.Object.ToString()
System.Object.Equals(System.Object)
System.Object.Equals(System.Object, System.Object)
System.Object.ReferenceEquals(System.Object, System.Object)
System.Object.GetHashCode()
System.Object.GetType()
System.Object.MemberwiseClone()
Namespace: EPiServer.Shell.Services.Rest
Assembly: EPiServer.Shell.dll
Version: 9.12.2
Syntax
public class ItemRange

Constructors

ItemRange()

Initializes a new instance of the ItemRange class.

Declaration
public ItemRange()

Properties

End

Gets or sets the index of the last item requested or returned.

Declaration
public int? End { get; set; }
Property Value
Type Description
System.Nullable<System.Int32>

Length

Gets the calculated length (number of items) from Start to End.

Declaration
public long? Length { get; }
Property Value
Type Description
System.Nullable<System.Int64>

Start

Gets or sets the start index of the requested or returned range of items.

Declaration
public int? Start { get; set; }
Property Value
Type Description
System.Nullable<System.Int32>

Total

Gets or sets the total number of items. Only used in the response. Null if unknown.

Declaration
public int? Total { get; set; }
Property Value
Type Description
System.Nullable<System.Int32>

Methods

AddHeaderTo(HttpResponseBase)

Adds the range information to the specified http response.

Declaration
public void AddHeaderTo(HttpResponseBase httpResponse)
Parameters
Type Name Description
System.Web.HttpResponseBase httpResponse

The HTTP response.

ApplyTo<T>(IEnumerable<T>)

Applies the range (start, end) and returns the items in the range together with the actual range (start, end, total).

Declaration
public virtual RangedItems<T> ApplyTo<T>(IEnumerable<T> items)
Parameters
Type Name Description
System.Collections.Generic.IEnumerable<T> items

The full item collection to get the range from.
Returns
Type Description
RangedItems<T>

A RangedItems<T> instance containing the resulting range of items as well as a new ItemRange instance describing the actual range (including total).
Type Parameters
Name Description
T

The type of items to apply range to.

ApplyTo<T>(IEnumerable<T>, Nullable<Int32>)

Applies the range (start, end) and returns the items in the range together with the actual range (start, end, total), using a supplied total count which means that items don't have to be enumerated to get the count.

Declaration
public virtual RangedItems<T> ApplyTo<T>(IEnumerable<T> items, int? totalItemCount)
Parameters
Type Name Description
System.Collections.Generic.IEnumerable<T> items

The full item collection to get the range from.
System.Nullable<System.Int32> totalItemCount

The total item count, or null if it should be reported as unknown. To get the actual total count by enumerating items, use the overload without the totalItemCount parameter.
Returns
Type Description
RangedItems<T>

A RangedItems<T> instance containing the resulting range of items as well as a new ItemRange instance describing the actual range (including total).
Type Parameters
Name Description
T

The type of items to apply range to.

ApplyTo<T>(IQueryable<T>)

Applies the range (start, end) and returns the items in the range together with the actual range (start, end, total). Utilizes the query engine of the IQueryable to avoid fetching all items unless needed.

Declaration
public virtual RangedItems<T> ApplyTo<T>(IQueryable<T> items)
Parameters
Type Name Description
System.Linq.IQueryable<T> items

The full item collection to get the range from.
Returns
Type Description
RangedItems<T>

A RangedItems<T> instance containing the resulting range of items as well as a new ItemRange instance describing the actual range (including total).
Type Parameters
Name Description
T

The type of items to apply range to.

ApplyTo<T>(IQueryable<T>, Nullable<Int32>)

Applies the range (start, end) and returns the items in the range together with the actual range (start, end, total), using a supplied total count which means that items don't have to be enumerated to get the count.

Declaration
public virtual RangedItems<T> ApplyTo<T>(IQueryable<T> items, int? totalItemCount)
Parameters
Type Name Description
System.Linq.IQueryable<T> items

The full item collection to get the range from.
System.Nullable<System.Int32> totalItemCount

The total item count, or null if it should be reported as unknown. To get the actual total count by enumerating items, use the overload without the totalItemCount parameter.
Returns
Type Description
RangedItems<T>

A RangedItems<T> instance containing the resulting range of items as well as a new ItemRange instance describing the actual range (including total).
Type Parameters
Name Description
T

The type of items to apply range to.

ReadHeaderFrom(HttpRequestBase)

Creates an ItemRange object from the headers in the specified http request.

Declaration
public static ItemRange ReadHeaderFrom(HttpRequestBase httpRequest)
Parameters
Type Name Description
System.Web.HttpRequestBase httpRequest

The HTTP request.
Returns
Type Description
ItemRange

An ItemRange with information about the requested range; or null if the no range information was found in the headers.

Extension Methods