Question

I have created a simple C# custom action.

[CustomAction]
public static ActionResult MySimpleAction(Session session)
{
    MessageBox.Show("It works!");
    return ActionResult.Success;
}

<Binary Id="myAction" 
        SourceFile="MyApp.CA.dll"/>

<CustomAction Id="myActionId" 
              BinaryKey="myAction" 
              DllEntry="MySimpleAction" 
              Execute="deferred" 
              Return="check" />

<InstallExecuteSequence>
      <Custom Action="myActionId" 
              After="InstallInitialize">CHECKBOXCOPYPROP=1</Custom>
</InstallExecuteSequence>

I got error 2762, when I ran the installation.

When I run

<InstallExecuteSequence>
    <Custom Action="myActionId" 
            Before="InstallFinalize">CHECKBOXCOPYPROP=1</Custom>
</InstallExecuteSequence>

I didn’t get the error. Why can’t I run after InstallInitialize? How is it run?

Answer 1

You must write:

<CustomAction Id="myActionId" BinaryKey="myAction" DllEntry="MySimpleAction" Execute="immediate" Return="check" />

With Execute="deferred" it will not work.

Besides this, in CusomAction.config it must be written:

<configuration>
    <startup useLegacyV2RuntimeActivationPolicy="true">
        <supportedRuntime version="v4.0" />
        <supportedRuntime version="v2.0.50727"/>
    </startup>
</configuration>