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Dynamics 365 Community / Forums / Microsoft Dynamics CRM (Archived) / Access Pre Image On De...
Microsoft Dynamics CRM (Archived)

Access Pre Image On Delete Post Operation Plugin

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Posted on by Laurentf2006 50

Hi,

I have a Post Operation Delete Plugin (Must be on POST because I have to update counters and don't want to count the delete record)

I had a Pre Image because I need info about the deleted record.

I don't know how to access the Image.

Thanks

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  • Suggested answer
    gdas Profile Picture
    gdas 50,091 Moderator on at
    RE: Access Pre Image On Delete Post Operation Plugin

    Hi Laurent,

    You can also accept my answer :

    Please make sure you define plugin step following:

    Messages : Delete

    Event Pipeline Stage of Execution : Pre-Validation

    And also don't forget to create pre image under step

    public class DeletePlugin: IPlugin
	{
		
        public void Execute(IServiceProvider serviceProvider)
		{
            //Extract the tracing service for use in debugging sandboxed plug-ins.
            ITracingService tracingService =
                (ITracingService)serviceProvider.GetService(typeof(ITracingService));

            // Obtain the execution context from the service provider.
            IPluginExecutionContext context = (IPluginExecutionContext)
                serviceProvider.GetService(typeof(IPluginExecutionContext));

            // The InputParameters collection contains all the data passed in the message request.
            if (context.InputParameters.Contains("Target") &&
                context.InputParameters["Target"] is Entity)
            {				

                // Obtain the target entity from the input parameters.
                Entity entity = (Entity)context.InputParameters["Target"];			

                
                if (entity.LogicalName != "YourEntityName")  //Need to replace with your entity
                    return;
				
				try
				{
					if	(context.PreEntityImages != null && context.PreEntityImages.Contains("PreImage"))
					{
						 Entity BeforeDeleteEntity = (Entity)context.PreEntityImages["PreImage"]; // Get Pre Image of the entity
						/// Your Logic Here
					}
				
				 }
                catch (FaultException<OrganizationServiceFault> ex)
                {
                    throw new InvalidPluginExecutionException("An error occurred in the FollowupPlugin plug-in.", ex);
                }

                catch (Exception ex)
                {
                    tracingService.Trace("FollowupPlugin: {0}", ex.ToString());
                    throw;
                }
			}
		}
	}


  • Michel Gueli Profile Picture
    Michel Gueli 982 on at
    RE: Access Pre Image On Delete Post Operation Plugin

    Please mark the answer as verified.

  • Suggested answer
    Community Member Profile Picture
    Community Member on at
    RE: Access Pre Image On Delete Post Operation Plugin

    Michel Gueli has posted the solution. You get the entity reference from the context, just not the context entity (as is the case with a regular post no-image plugin).

    The simplest way to get it:

    Entity entity = (Entity)context.PreEntityImages["preimg"];

    "preimg" is the name given to the image when registering your plugin in the plugin registration tool.

  • Suggested answer
    Community Member Profile Picture
    Community Member on at
    RE: Access Pre Image On Delete Post Operation Plugin

    Hi Michel,

    correct me if I am wrong but in the last row it states that post Delete has a preImage available. Of course there is no post image as the record is deleted

  • Suggested answer
    Michel Gueli Profile Picture
    Michel Gueli 982 on at
    RE: Access Pre Image On Delete Post Operation Plugin
    Message Stage Pre-Image Post-Image
    Create PRE No No
    Create POST No Yes
    Update PRE Yes No
    Update POST Yes Yes
    Delete PRE Yes No
    Delete POST Yes No

    There is a pre-image in the post Stage.

    var preImageEntity = (context.PreEntityImages != null && context.PreEntityImages.Contains("PreImage")) ? context.PreEntityImages["PreImage"] : null;

    "PreImage" is my alias for my pre-image.

     

  • Suggested answer
    Community Member Profile Picture
    Community Member on at
    RE: Access Pre Image On Delete Post Operation Plugin

    Hi,

    can this help you? community.dynamics.com/.../utilising-pre-post-entity-images-in-a-dynamics-crm-plugin

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