ID Property (Common)

Sets or returns the identifier for the specified object. The default value is . an empty string ("").

public virtual string ID {
   get,
   set
}

The following is a list of the classes that inherit the ID property from the System.Web.UI.Control base class.

AdRotator Class	MobileListItem Class
BaseValidator Class	MobilePage Class
Calendar Class	ObjectList Class
PhoneCall Class	ObjectListItem Class
Command Class	PagedControl Class
CompareValidator Class	Panel Class
CustomValidator Class	RangeValidator Class
DeviceSpecific Class	RegularExpressionValidator Class
ErrorFormatterPage Class	RequiredFieldValidator Class
Form Class	SelectionList Class
Image Class	StyleSheet Class
Label Class	TextBox Class
Link Class	TextControl Class
List Class	TextView Class
LiteralText Class	ValidationSummary Class
MobileControl Class

This property is required only if you require subsequent programmatic access; otherwise, it is not a required property in a control.

Additional resources