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CRM 4 Plugins – Read Entity Attributes within the Plugin


CRM 4.0 Plugins are a way to integrate custom business logic into CRM 4.0's platform. Here are the high-level steps to follow in plugin creation and registration. For the plugin registration, Plugin Registration Tool for CRM 4.0 delivered with CRM 4.0 SDK is used.

Implement Plugin

  1. Visual Studio class library project can be used to implement plugins
  2. Inherit the class from IPlugin class
  3. Implement "Execute" method taking IPluginExecutionContext type context as a parameter as follows

    public void Execute(IPluginExecutionContext context)

  4. Here is a sample "Execute" method implemented for Opportunity entity

public void Execute(IPluginExecutionContext context)
{
string m_OpportunityName = string.Empty;
string m_OpportunityId = string.Empty;
if (context.MessageName.Equals("Create"))
{
// Entity creation.
DynamicEntity postEntity;
if (context.PostEntityImages.Contains("Target"))
{
postEntity = ((DynamicEntity)context.PostEntityImages["Target"]);
if (postEntity.Properties.Contains("opportunityid"))
{
Key opportunityId = (Key)postEntity.Properties["opportunityid"];
if (opportunityId != null)
{
m_OpportunityId = opportunityId.Value.ToString();
}
}
if (postEntity.Properties.Contains("name"))
{
m_OpportunityName = postEntity.Properties["name"].ToString();
}
}
}
else if (context.MessageName.Equals("Update"))
{
// Entity update.
DynamicEntity pretEntity;
DynamicEntity postEntity;
if (context.PreEntityImages.Contains("Target"))
{
pretEntity = ((DynamicEntity)context.PreEntityImages["Target"]);
}
if (context.PostEntityImages.Contains("Target"))
{
postEntity = ((DynamicEntity)context.PostEntityImages["Target"]);
}
if (postEntity.Properties.Contains("opportunityid"))
{
Key opportunityId = (Key)postEntity.Properties["opportunityid"];
if (opportunityId != null)
{
m_OpportunityId = opportunityId.Value.ToString();
}
}
if (postEntity.Properties.Contains("name"))
{
m_OpportunityName = postEntity.Properties["name"].ToString();
}
}
}

Register Plugin

Copy plugin dll(s) to "……\Program Files\Microsoft Dynamics CRM\Server\bin\assembly"

Run "Plugin Registration Tool" come with the SDK to register the plugin for an entity.

Then create a step for "Create" and another step for "Update". "Create Step" executes the plugin in new entity instance creation, while "Update Step" executes the plugin in entity update.

Then create a "Post Image" for "Create Step" and "Pre Image" and a "Post Image" for "Update step".

That is it. If the Steps are created as "Synchronous", plugin can be debugged by attaching to "w3wp.exe" process. If the Steps are created as "Asynchronous", plugin can be debugged by attaching to "CrmAsyncService.exe" process.

One thing that should be noted is, Active Directory account used to deploy and register new assembly has to be added into "Deployment Administrators" group in CRM Deployment Manager. Having assigned only "System Administrator" role is not sufficient for this task.

How to Get Row Count of All Tables - SQL Server

For this purpose doing a rowcount for each table will take forever, if the DB is fairly large. In both of following ways we don't count rows of each table, instead just look in SQL Server where it is already stored.

Query 1:
SELECT
[TableName] = O.name,
[RowCount] = MAX(I.rows)
FROM
sysobjects O,
sysindexes I
WHERE
O.xtype = 'U' AND I.id = OBJECT_ID(O.name)
GROUP BY O.name
ORDER BY [TableName] ASC


Query 2:
SELECT
'['+SCHEMA_NAME(T.[schema_id])+'].['+T.name+']' AS [Table_Name]
,I.rows AS Row_Count
FROM sys.tables T
INNER JOIN sysindexes I ON (T.object_id = I.id AND I.indid < 2
ORDER BY [Table_Name]


It should be noted that both of above queries give an approximate count only, because of sysindexes table is usually a little bit inaccurate, due to it is not updated constantly.