once again I'm stuck at a problem, that is probably easy to solve.
I want to extend a setup, created with WiX, to make changes in the configuration file of the installed program. In order to do this I've created a CustomAction. To be able to change the configuration file, I need to know the (install-)location of it within my CustomAction. Therefore I try passing the INSTALLLOCATION and Filename to my CustomAction. Here lies the problem: The CustomActionData-Attribute is always empty and the setup throws an exception.
My CustomAction is a C# DLL file: DemoDatumErzeugen.CA.dll. It contains a method DatumEintragen which modifies the configuration file. I'm trying to access the data this way:
string path = session.CustomActionData["LOCATION"];
This is where the exception is thrown. I only got the German error message, but it says something along the lines: The supplied key was not found in the dictionary (Der angegebene Schlüssel war nicht im Wörterbuch angegeben.).
This is how I try passing the properties from my setup-script to my custom action:
<Binary Id="DemoDatumEinrichtenCA" SourceFile="DemoDatumErzeugen.CA.dll"/>
<CustomAction Id="DemoDatum.SetProperty" Return="check" Property="DatumEintragen" Value="LOCATION=[INSTALLLOCATION];NAME=StrategieplanConfig.xml;"/>
<CustomAction Id="DemoDatum" BinaryKey="DemoDatumEinrichtenCA" DllEntry="DatumEintragen" Execute="deferred" Return="check" HideTarget="no"/>
<InstallExecuteSequence>
<Custom Action="DemoDatum.SetProperty" After="InstallFiles"/>
<Custom Action="DemoDatum" After="DemoDatum.SetProperty"/>
</InstallExecuteSequence>
I've seen many examples where it was done the same way or at least very similar. I've tried many things but nothing seems to help like changing the value After in <Custom Action="DemoDatum.SetProperty" After="InstallFiles"/>. CustomActionData is always zero.
I check it with: session.CustomActionData.Count
Once again I'm pretty thankful for any help or hints where I've done something wrong.
