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CacheVirtualItemsEventArgs Class

Provides data for the CacheVirtualItems event.

System.Object
  System.EventArgs
    System.Windows.Forms.CacheVirtualItemsEventArgs

Namespace:  System.Windows.Forms
Assembly:  System.Windows.Forms (in System.Windows.Forms.dll)

public class CacheVirtualItemsEventArgs : EventArgs

The CacheVirtualItemsEventArgs type exposes the following members.

  NameDescription
Public methodCacheVirtualItemsEventArgsInitializes a new instance of the CacheVirtualItemsEventArgs class with the specified starting and ending indices.
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  NameDescription
Public propertyEndIndexGets the ending index for the range of values needed by a ListView control in virtual mode.
Public propertyStartIndexGets the starting index for a range of values needed by a ListView control in virtual mode.
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  NameDescription
Public methodEquals(Object)Determines whether the specified Object is equal to the current Object. (Inherited from Object.)
Protected methodFinalizeAllows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection. (Inherited from Object.)
Public methodGetHashCodeServes as a hash function for a particular type. (Inherited from Object.)
Public methodGetTypeGets the Type of the current instance. (Inherited from Object.)
Protected methodMemberwiseCloneCreates a shallow copy of the current Object. (Inherited from Object.)
Public methodToStringReturns a string that represents the current object. (Inherited from Object.)
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The CacheVirtualItems event occurs when a new area of a ListView in virtual mode is exposed and the ListView determines a new range of items is needed.

The following code example demonstrates the use of this type. In the example, an event handler reports on the occurrence of the CacheVirtualItems event. This report helps you to learn when the event occurs and can assist you in debugging. To report on multiple events or on events that occur frequently, consider replacing Show with Console.WriteLine or appending the message to a multiline TextBox.

To run the example code, paste it into a project that contains an instance of type ListView named ListView1. Then ensure that the event handler is associated with the CacheVirtualItems event.


private void ListView1_CacheVirtualItems(Object sender, CacheVirtualItemsEventArgs e) {

System.Text.StringBuilder messageBoxCS = new System.Text.StringBuilder();
messageBoxCS.AppendFormat("{0} = {1}", "StartIndex", e.StartIndex );
messageBoxCS.AppendLine();
messageBoxCS.AppendFormat("{0} = {1}", "EndIndex", e.EndIndex );
messageBoxCS.AppendLine();
MessageBox.Show(messageBoxCS.ToString(), "CacheVirtualItems Event" );
}


.NET Framework

Supported in: 4, 3.5, 3.0, 2.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

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.

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