See Also: ExpressionsCollectionConverter Members
The System.Web.UI.Design.ExpressionsCollectionConverter class converts an System.Web.UI.ExpressionBindingCollection to a string for the property-editing grid at design time, which always appears as an empty string ("").
A designer host, such as vsprvslong, uses the System.Web.Compilation.ExpressionBuilder and System.Web.UI.Design.ExpressionEditor class implementations with the System.Web.UI.Design.ExpressionsCollectionEditor and System.Web.UI.Design.ExpressionsCollectionConverter classes to set the expression bindings for control properties at design time, and the System.Web.UI.Design.ControlPersister to persist the expressions for run time. Expression strings reference a localizable resource, an application setting, a connection string, or a custom expression type. The expression string is bound to the control property at design time, and then used at run time to determine the value for the property.