c# - Edit control doesn't create property in WiX -

i have dialog edit control , property set it. when advance next dialog , calls custom action (from pushbutton publish), can't access property should have been created before.

i don't create/declare property before (using <property>, because want edit control have text empty , if declare property, must assign value causes text filled it. if declare, the ca finds property.

how can create property without value in edit control , able access ca?

here code:

<control id="edithost"          type="edit"          x="150" y="95"          height="17" width="350"          property="server_host" /> 

[customaction] public static actionresult mycustomaction(session session) {     if (string.isnullorempty(session["server_host"])     {         session.log("error!");     } ... } 

you can declare property secure instead of values. attribute used pass values client side server side.

<property id="server_host" secure="yes"/>