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Step-by-Step Guide to Mastering Dynamics 365 Plugin Development: Enhancing Microsoft’s Business Solution

Step-by-Step Guide to Mastering Dynamics 365 Plugin Development: Enhancing Microsoft’s Business Solution

Title: Mastering the Art of Writing a Simple Dynamics 365 Plugin


Microsoft Dynamics 365 is an all-in-one business solution that integrates CRM and ERP capabilities. A highly adaptable platform, it allows developers to enhance its functionality by creating custom plugins. This blog post provides a step-by-step guide on how to write a simple Dynamics 365 plugin for both beginners and seasoned developers alike.

Understanding Dynamics 365 Plugins

Plugins are custom pieces of code written in .NET languages, primarily C#. They interact with the data model and business entities in Dynamics 365 to manipulate data and augment system behaviours. In essence, they allow developers to introduce new processes or modify existing ones within the Dynamics 365 environment.


Before starting, ensure you have installed:

1. Visual Studio: An integrated development environment from Microsoft.
2. .NET Framework: The software framework developed by Microsoft.
3. Dynamics 365 SDK: The Software Development Kit for Dynamics 365.

Step 1: Create a New Project in Visual Studio

Launch Visual Studio and navigate to File > New > Project. Select ‘Class Library (.NET Framework)’ under Visual C#.

Step 2: Install Microsoft.CrmSdk.CoreAssemblies

This assembly provides the core functionalities needed to develop a Dynamics 365 plugin. To install it, go to Tools > NuGet Package Manager > Manage NuGet Packages for Solution. Search for `Microsoft.CrmSdk.CoreAssemblies` and click Install.

Step 3: Write Your Plugin Code

In your class file, replace the automatically generated code with the following template:

using System;
using System.ServiceModel;
using Microsoft.Xrm.Sdk;

namespace YourNamespace
public class YourClass : IPlugin
public void Execute(IServiceProvider serviceProvider)
// Obtain the execution context from the service provider.
IPluginExecutionContext context = (IPluginExecutionContext)

// Input parameters 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”];

// Plugin code goes here
catch (FaultException ex)
throw new InvalidPluginExecutionException(“An error occurred in the plug-in.”, ex);
catch (Exception ex)
tracingService.Trace(“An error occurred: {0}”, ex.ToString());

Replace ‘YourNamespace’ and ‘YourClass’ with appropriate names.

Step 4: Debugging

One of the beneficial aspects of using plugins is the ability to debug them in a similar way to other .NET applications. Use the Plugin Registration Tool available in the Dynamics 365 SDK to test your plugins locally.

Step 5: Deployment

Once you complete writing and testing your plugin, the next step is to register it in the Dynamics 365 system. Use the Plugin Registration Tool for this as well.

Optimal Dynamics 365 Plugin Development

Here are some best practices when creating Dynamics 365 plugins:

1. Keep your plugins simple and focused on a single task.
2. Avoid long running operations since plugins execute synchronously and can cause timeouts.
3. Utilise the tracing service for easier debugging.
4. Always handle exceptions to prevent system crashes and data loss.


Writing a simple Dynamics 365 plugin doesn’t have to be an intimidating process. At its core, it’s part of the wider .NET landscape with its own nuances. Enhance your application development skills by mastering this art, and you’ll find endless possibilities to create solutions that meet specific business needs, taking your Dynamics 365 experience to a new level.

In the dynamic world of Microsoft Dynamics 365, the only limits are those you have yet to learn to overcome. So, roll up your sleeves and start coding!

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