wwWebControl::PreservedProperties

A collection of properties of the control that are persisted into ViewState.

By specifying a propertyname you are telling Web Connection to save the property value into viewstate and retrieve it again on the next Postback. This is a very powerful feature that allows keeping state for properties that don't normally post back. For example, if you want to track a button caption or the color of a label.

Note that PreserveProperty must be reset on every hit, so a call to PreserveProperty only affects the immediate request. If you want to more permanently track properties add them at the beginning of the Onload() override of your form.


Default Value

Initial value: null

Example

*** Tell WWWC to track properties in viewstate
this.btnShowPanel.PreserveProperty("text")
this.btnShowPanel.PreserveProperty("forecolor")
this.panContainer.PreserveProperty("visible")
this.ErrorDisplay.PreserveProperty("text")
this.radWebTool.PreserveProperty("visible")
this.lstWebTool.PreserveProperty("visible")

See also:

Class wwWebControl

© West Wind Technologies, 1996-2018 • Updated: 10/09/05
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