This topic has not yet been rated - Rate this topic

GeneratorPosition Structure

GeneratorPosition is used to describe the position of an item that is managed by ItemContainerGenerator.

Namespace:  System.Windows.Controls.Primitives
Assembly:  PresentationFramework (in PresentationFramework.dll)
XMLNS for XAML: http://schemas.microsoft.com/winfx/2006/xaml/presentation, http://schemas.microsoft.com/netfx/2007/xaml/presentation
public struct GeneratorPosition
<GeneratorPosition .../>

The GeneratorPosition type exposes the following members.

  NameDescription
Public methodGeneratorPositionInitializes a new instance of GeneratorPosition with the specified index and offset.
Top
  NameDescription
Public propertyIndexGets or sets the Int32 index that is relative to the generated (realized) items.
Public propertyOffsetGets or sets the Int32 offset that is relative to the ungenerated (unrealized) items near the indexed item.
Top
  NameDescription
Public methodEqualsCompares the specified instance and the current instance of GeneratorPosition for value equality. (Overrides ValueType.Equals(Object).)
Public methodGetHashCodeReturns the hash code for this GeneratorPosition. (Overrides ValueType.GetHashCode().)
Public methodGetTypeGets the Type of the current instance. (Inherited from Object.)
Public methodToStringReturns a string representation of this instance of GeneratorPosition. (Overrides ValueType.ToString().)
Top
  NameDescription
Public operatorStatic memberEqualityCompares two GeneratorPosition objects for value equality.
Public operatorStatic memberInequalityCompares two GeneratorPosition objects for value inequality.
Top

GeneratorPosition is used by StartAt.

The following example illustrates how to use GeneratorPosition to start generating forward from the beginning of an item list.

// Start generating items forward from the beginning of the item list
GeneratorPosition position = new GeneratorPosition(-1, 0);
GeneratorDirection direction = GeneratorDirection.Forward;
IItemContainerGenerator generator = (IItemContainerGenerator)this.itemsControl.ItemContainerGenerator;
generator.StartAt(position, direction);

The following example illustrates how to use GeneratorPosition to start generating backward from the end of an item list.

// Start generating items backward from the end of the item list
GeneratorPosition position = new GeneratorPosition(-1, 0);
GeneratorDirection direction = GeneratorDirection.Backward;
IItemContainerGenerator generator = (IItemContainerGenerator)this.itemsControl.ItemContainerGenerator;
generator.StartAt(position, direction);

The following example illustrates how to use GeneratorPosition to start generating forward from the middle of an item list.

// Start generating items forward, 
// starting with the first unrealized item (offset of 1), 
// after the 5th realized item 
// (the item with index 4 among all realized items) in the list
GeneratorPosition position = new GeneratorPosition(4, 1);
GeneratorDirection direction = GeneratorDirection.Forward;
IItemContainerGenerator generator = (IItemContainerGenerator)this.itemsControl.ItemContainerGenerator;
generator.StartAt(position, direction);

.NET Framework

Supported in: 4.5.1, 4.5, 4, 3.5, 3.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows Phone 8.1, Windows Phone 8, 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.

Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.
Did you find this helpful?
(1500 characters remaining)
Thank you for your feedback
Show:
© 2014 Microsoft. All rights reserved.