wix - Text template stop working after manual edit -

in installer want user connect database. support 4 database types in product. in connect database dialog created, there combobox control supported database types, edit control user suppose enter connection string , pushbutton, when pressed show connection string text template in edit control according selected database type in combobox. now, problem is:

1. user clicks show template button when mssql selected
2. user alters manually place holder in text template connection string in edit control
3. user realize needs mysql connection
4. user change value in combobox mysql , clicks show template button , nothing happens.

to summarize this, after edit control manually altered, show template stops working.

here wix code use:

<fragment>     <!-- supported databases templates -->     <property id="mssqltemplate" value="data source=localhost;initial catalog=[database];integrated security=yes"/>     <property id="mysqltemplate" value="server=localhost;uid=[username];pwd=[password];database=[database];" />     <property id="db2template" value="server=localhost;uid=[username];pwd=[password];database=[database];" />     <property id="oracletemplate" value="data source=[database];user id=[username];password=[password];" />      <property id="prop_database_type">mssql</property>     <property id="prop_connectionstring"></property>      <binary id="ca_dll" sourcefile="$(var.customactions.targetdir)customactions.ca.dll" />     <customaction id="cashowtemplate" binarykey="ca_dll" dllentry="showtemplate" execute="immediate" />     <ui id="installdlg_ui">       <textstyle id="tahoma_regular" facename="tahoma" size="8" />       <property id="defaultuifont" value="tahoma_regular" />       <dialog id="installdlg" width="370" height="270" title="amazing software" nominimize="no">         <!-- database type -->         <control id="lbldatabasetype" type="text" x="20" width="100" y="60" height="18" noprefix="yes" text="database type" />         <control id="cbdatabaseserver" type="combobox" x="120" width="90" y="60" height="18" property="prop_database_type" combolist="yes" sorted="yes">           <combobox property="prop_database_type">             <listitem text="mssql" value="mssql" />             <listitem text="mysql" value="mysql" />             <listitem text="oracle" value="oracle" />             <listitem text="db2" value="db2" />           </combobox>         </control>         <control id="btnshowtemplate" type="pushbutton" x="215" y="60" width="85" height="17" text="show template">           <publish event="doaction" value="cashowtemplate" order="1">1</publish>           <publish property="prop_connectionstring" value="[prop_connectionstring]" order="2">1</publish>         </control>         <!-- connection string -->         <control id="lblconnectionstring" type="text" x="20" width="100" y="85" height="18" noprefix="yes" text="connection string" />         <control id="tbconnectionstring" type="edit" x="120" width="180" y="85" height="18" property="prop_connectionstring" text="[prop_connectionstring]" />         <control id="cancelbutton" type="pushbutton" text="cancel" height="17" width="56" x="180" y="243" cancel="yes">           <publish event="enddialog" value="exit" />         </control>       </dialog>       <installuisequence>         <show dialog="installdlg" before="executeaction" />       </installuisequence>     </ui>   </fragment> 

and custom action written in c#:

[customaction] public static actionresult showtemplate(session session) {   string selecteddatabase = string.format("{0}template", session["prop_database_type"]);   session["prop_connectionstring"] = session[selecteddatabase];   return actionresult.success; } 

what doing wrong?

your code doesn’t have issue. well-known limitation of wix ui. check below discussions more details.

http://windows-installer-xml-wix-toolset.687559.n2.nabble.com/ui-edit-box-not-updating-td5077648.html

wix interactions conditions, properties & custom actions