Hi ,
The Below plugin sample has taken from the SDK
// =====================================================================
// This file is part of the Microsoft CRM SDK Code Samples.
//
// Copyright (C) Microsoft Corporation. All rights reserved.
//
// This source code is intended only as a supplement to Microsoft
// Development Tools and/or on-line documentation. See these other
// materials for detailed information regarding Microsoft code samples.
//
// THIS CODE AND INFORMATION ARE PROVIDED "AS IS" WITHOUT WARRANTY OF ANY
// KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND/OR FITNESS FOR A
// PARTICULAR PURPOSE.
// =====================================================================
//<snippetAccountNumberPlugin>
using System;
// Microsoft Dynamics CRM namespace(s)
using Microsoft.Xrm.Sdk;
namespace Microsoft.Crm.Sdk.Samples
{
public class AccountNumberPlugin: IPlugin
{
/// <summary>
/// A plug-in that auto generates an account number when an
/// account is created.
/// </summary>
/// <remarks>Register this plug-in on the Create message, account entity,
/// and pre-operation stage.
/// </remarks>
//<snippetAccountNumberPlugin2>
public void Execute(IServiceProvider serviceProvider)
{
// Obtain the execution context from the service provider.
Microsoft.Xrm.Sdk.IPluginExecutionContext context = (Microsoft.Xrm.Sdk.IPluginExecutionContext)
serviceProvider.GetService(typeof(Microsoft.Xrm.Sdk.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"];
//</snippetAccountNumberPlugin2>
// Verify that the target entity represents an account.
// If not, this plug-in was not registered correctly.
if (entity.LogicalName == "account")
{
// An accountnumber attribute should not already exist because
// it is system generated.
if (entity.Attributes.Contains("accountnumber") == false)
{
// Create a new accountnumber attribute, set its value, and add
// the attribute to the entity's attribute collection.
Random rndgen = new Random();
entity.Attributes.Add("accountnumber", rndgen.Next().ToString());
}
else
{
// Throw an error, because account numbers must be system generated.
// Throwing an InvalidPluginExecutionException will cause the error message
// to be displayed in a dialog of the Web application.
throw new InvalidPluginExecutionException("The account number can only be set by the system.");
}
}
}
}
}
}
//</snippetAccountNumberPlugin>
I think this may help you.
Warm Regards, Suresh Kumar D
