"Delete event is not fired in CRM 2011" / "Delete event is not working in CRM 2011"

Have you ever faced the above issue? If so lets figure out why its happening? In simple words the Villian is context.InputParameters["Target"] 

Delete event -> Type of context.InputParameters["Target"]  is EntityReference

Create event / Update event ->Type of context.InputParameters["Target"] is Entity

In a nutshell,

  

context = (IPluginExecutionContext)serviceProvider.GetService(typeof(IPluginExecutionContext));

if (context.InputParameters.Contains("Target") &&

 context.InputParameters["Target"] is EntityReference)

{

if (context.MessageName == "Delete")

{

 // Code to be executed during Delete event

}

}

Whereas Create / Update events work as follows

context = (IPluginExecutionContext)serviceProvider.GetService(typeof(IPluginExecutionContext));

if (context.InputParameters.Contains("Target") &&

 context.InputParameters["Target"] is Entity)

{

  

 if (context.MessageName == "Create")

 {

//Code to be executed during Create event of an entity

}

   if (context.MessageName == "Update”)

{

//Code to be executed during Update event of an entity

}

}

Please note the key difference Entity and EntityReference