can not set properties with Session.CustomActionData

Can not set a property value using Session.CustomActionData.

        if (s.CustomActionData.ContainsKey(P开发者_Go百科ropertyName0))
            s.CustomActionData[PropertyName0] = "1";
        else
            s.CustomActionData.Add(PropertyName0, "1");     

Although this code works, when the custom action ends, the properties remain unchanged. So how do I set the property value? I need to set the property value in one custom action and read it in another.

It is not clear what you are doing. Only few properties are available in the deferred custom action. Are you trying to pass data to a deferred custom action?

You can write an immediate custom action to write properties and then pass these to a deferred custom action if you need this at run time.

Here is an example of an immediate CA

[CustomAction]
public static ActionResult ImmediateCA(Session session)
{
   CustomActionData data = new CustomActionData();
   data["property1"] = "abc";
   data["property2"] = "def";
   session["myDeferredCAData"] = data.ToString();
   return ActionResult.Success;
}


[CustomAction]
public static ActionResult myDeferredCA(Session session)
{
   CustomActionData data = session.CustomActionData;
   string property1 = data["property1"];
   return ActionResult.Success;
}

This solution is proposed by Nick Ramirez

Are you using managed code for this? I know that I've had trouble with getting C++ CAs to take in a property and update the property in one CA. In the past I've written to the registry in one CA and read from it into a property in another to get around this problem.

It is impossible to set a property in a deferred custom action. http://msdn.microsoft.com/en-us/library/aa370543(v=VS.85).aspx