ASP.NET ListBox - Client-Side API - Select / Deselect All Items

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Select All Items
Deselect All Items
The ListBox control provides client-side properties / methods for setting / getting the selected item.
By looping through the options collection you can select / deselect all the items from the list.

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Products Downloads
obout.com 
obout.com Home 
News 
Listbox Home   
Listbox Home 
Examples - 50
Appearance - 2 
Live Styles 
Different Styles New 
Load on Demand - 3 
Load Items on Demand 
Load Items on Demand with Paging  
Virtual Scrolling  
Multi-Columns - 4 
Grid-like Multi-Columns  
Multiple Rows and Columns  
Load multi Columns on Demand  
State Selector  
Items with Icons - 3 
Items with Icons  
Grid-like Multi-Columns with Icons  
Multiple Rows and Columns with Icons  
Templates - 3 
Item Templates  
Header Templates  
Populating with Data - 5 
Declarative  
SqlDataSource  
ObjectDataSource  
Generic Collections  
DataSet  
Item Selection - 6 
Single Item Selection  
Multi Item Selection  
Get Selected Item  
Get Selected Items  
Set Selected Item New 
Set Selected Items New 
Master/Detail - 3 
Master/Detail  
Unlimited Detail Levels  
Cascading ListBoxes  
Integration - 5 
Items with ASP.NET CheckBoxes  
Items with Obout CheckBoxes  
RadioButtons inside ListBox  
ListBox inside Grid  
Validate with ASP.NET Validators New 
Settings - 3 
AutoPostback  
Height  
Width  
Server-Side API - 4 
Server-Side Events  
Enable / Disable  
Get Values from Multiple Columns New 
Tooltips New 
Client-Side API - 8 
Client-Side Events  
Add / Remove Items  
Add Multi-Column Items New 
Enable / Disable  
Get Selected Item  
Reset Selection New 
Select / Deselect All Items New 
Move Items New 
Appearance Customization - 1 
Aligning Items New 
Knowledge Base - 1 
Knowledge Base 
Documentation - 11 
Server-Side 
ListBox 
ListBoxClientSideEvents 
ComboBoxCssSettings 
ListBoxFooterTemlateContainer 
ListBoxHeaderTemlateContainer 
ListBoxItem 
ListBoxItemEventArgs 
ListBoxItemTemlateContainer 
ListBoxLoadingItemsEventArgs 
Client-Side 
Client-Side API 
ChangeLog 
Tutorials - 2 
Appearance - 1 
CSS Tutorial  
Configuration - 1 
Using the correct path