Event system code is not working

Question

I have created a sample event system code to update a field of a Component when it is using a particular Schema.

1. DLL created and deployed properly

2. Added the assemblyFileName in to the config as well

Source code of the event system:

namespace com.jio.events.ComponentEventHandler
{
    [TcmExtension("ComponentEventHandlerEventSystemExtension")]
    public class ComponentEventHandler : TcmExtension
    {
        public ComponentEventHandler()
        {
            EventSystem.Subscribe<Component, SaveEventArgs>(SetOrUpdateMetadataProduct, EventPhases.TransactionCommitted);
        }

        private void SetOrUpdateMetadataProduct(Component component, EventArgs args, EventPhases phase)
        {
            if (component.Schema.Equals("XSLT Test - Ignor")) 
            {
                ItemFields content = new ItemFields(component.Content, component.Schema);
                SingleLineTextField title = (SingleLineTextField)content["Title"];
                //XhtmlField extra = (XhtmlField)content["extras"];

                title.Value = "Mobile";
                //extra.Value = "test done";
                component.Content = content.ToXml();
                component.Save();
                component.CheckIn();
            }
            else
            {
                return;
            }
        }
    }
}

Answer 1

I'm a bit surprized looking at your code sample, since component.Schema.Equals("XSLT Test - Ignor") is marked as a suspicious comparison in my Visual Studio (but that might be an addon I use).

Your problem is definitely in this line, you seem to assume that component.Schema is the Schema title. If you would use the TOM.NET API guide, you will see that it actually is an object of type Tridion.ContentManager.ContentManagement.Schema and that has a property Title which is a string.

So you should try using the following instead:

...
if (component.Schema.Title.Equals("XSLT Test - Ignor")) 
{
    ...

However might I mention that is still a bit of a risky comparison, it is better if you use a TCMURI or WebDAV URL to check the Schema, which you get from a configuration.

If you take a look at the example event system I wrote a long time ago, then you can see there how you can get such values from metadata of an organizational item (like a Folder or a Publication). The event system source code is downloadable for free on https://www.sdltridionworld.com/community/2011_extensions/rapideditorialinterface.aspx

For more information on how to debug an event handler (it's basically standard Visual Studio stuff), take a look here http://yatb.mitza.net/2012/03/debugging-tridion-2011-event-system.html

Answer 2

This might be your problem:

component.Schema.Equals("XSLT Test - Ignor")

component.Schema won't give you the title of the Schema.

It might help you in the future to put some logging in your events code, so that you can see if it goes to the else clause. And of course, you should know how to attach a debugger.