CacheVirtualItemsEventArgs Class

Definition

Namespace:

System.Windows.Forms

Assembly:

System.Windows.Forms.dll

Provides data for the CacheVirtualItems event.

public ref class CacheVirtualItemsEventArgs : EventArgs

public class CacheVirtualItemsEventArgs : EventArgs

type CacheVirtualItemsEventArgs = class
    inherit EventArgs

Public Class CacheVirtualItemsEventArgs
Inherits EventArgs

Inheritance

Object

EventArgs

CacheVirtualItemsEventArgs

Examples

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" );
}

Private Sub ListView1_CacheVirtualItems(sender as Object, e as CacheVirtualItemsEventArgs) _ 
     Handles ListView1.CacheVirtualItems

    Dim messageBoxVB as New System.Text.StringBuilder()
    messageBoxVB.AppendFormat("{0} = {1}", "StartIndex", e.StartIndex)
    messageBoxVB.AppendLine()
    messageBoxVB.AppendFormat("{0} = {1}", "EndIndex", e.EndIndex)
    messageBoxVB.AppendLine()
    MessageBox.Show(messageBoxVB.ToString(),"CacheVirtualItems Event")

End Sub

Remarks

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.

Constructors

CacheVirtualItemsEventArgs(Int32, Int32)

Initializes a new instance of the CacheVirtualItemsEventArgs class with the specified starting and ending indices.

Properties

EndIndex	Gets the ending index for the range of values needed by a ListView control in virtual mode.
StartIndex	Gets the starting index for a range of values needed by a ListView control in virtual mode.

Methods

Equals(Object)	Determines whether the specified object is equal to the current object. (Inherited from Object)
GetHashCode()	Serves as the default hash function. (Inherited from Object)
GetType()	Gets the Type of the current instance. (Inherited from Object)
MemberwiseClone()	Creates a shallow copy of the current Object. (Inherited from Object)
ToString()	Returns a string that represents the current object. (Inherited from Object)