ListBoxItemCollection.IndexOf(Object) Method

Returns the position of the specified item within the collection.

Namespace: DevExpress.XtraEditors.Controls

Assembly: DevExpress.XtraEditors.v19.2.dll

Declaration

C#

public virtual int IndexOf(
    object item
)

VB.NET

Public Overridable Function IndexOf(
    item As Object
) As Integer

Parameters

Name	Type	Description
item	Object	The object representing the item to locate within the collection.

Returns

Type	Description
Int32	An integer value representing the zero-based index of the specified item within the collection. -1 if the specified item is not found.

Related GitHub Examples

The following code snippets (auto-collected from DevExpress Examples) contain references to the IndexOf(Object) method.

Note

The algorithm used to collect these code examples remains a work in progress. Accordingly, the links and snippets below may produce inaccurate results. If you encounter an issue with code examples below, please use the feedback form on this page to report the issue.

C#

winforms-datagrid-custom-column-chooser-multi-select/CS/MultiSelectColumnCustomization/CustomGridControl/MultiSelectColumnCustomizationListBox.cs#L53

cache.Paint.DrawCheckBox(cache.Graphics, checkBoxRect, checkState);
if ( focusedItem != null && Items.IndexOf(focusedItem) == index )
    cache.Paint.DrawFocusRectangle(cache.Graphics, checkBoxRect, CustomizationForm.ForeColor, CustomizationForm.BackColor);

how-to-create-custom-column-chooser-allowing-column-multi-select-without-checkboxes-e2783/CS/MultiSelectColumnCustomization/MultiSelectColumnCustomizationListBox.cs#L40

object pointedItem = ItemByPoint(new Point(e.X, e.Y));
int itemIndex = Items.IndexOf(pointedItem);
Rectangle itemRect = GetItemRectangle(itemIndex);

VB.NET

winforms-datagrid-custom-column-chooser-multi-select/VB/MultiSelectColumnCustomization/CustomGridControl/MultiSelectColumnCustomizationListBox.vb#L54

cache.Paint.DrawCheckBox(cache.Graphics, checkBoxRect, checkState)
If focusedItem IsNot Nothing AndAlso Items.IndexOf(focusedItem) = index Then
    cache.Paint.DrawFocusRectangle(cache.Graphics, checkBoxRect, CustomizationForm.ForeColor, CustomizationForm.BackColor)

how-to-create-custom-column-chooser-allowing-column-multi-select-without-checkboxes-e2783/VB/MultiSelectColumnCustomization/MultiSelectColumnCustomizationListBox.vb#L39

Dim pointedItem As Object = ItemByPoint(New Point(e.X, e.Y))
Dim itemIndex As Integer = Items.IndexOf(pointedItem)
Dim itemRect As Rectangle = GetItemRectangle(itemIndex)