Author: Arvind Singh

using System;

using System.Collections.Generic;

using System.Text;

using Microsoft.Crm.Sdk;

using Microsoft.Crm.SdkTypeProxy;

using Microsoft.Crm.Sdk.Query;

using System.Web.Services.Protocols;

namespace CRM.Customization.AutoNumber

{

public class AutoNumberPlugIns:IPlugin

{

DynamicEntity entity = null;

int startNumber;

string prefix = string.Empty;

string seperator = string.Empty;

int nextMaxNumber;

string uniqueId = string.Empty;

#region IPlugin Members

public void Execute(IPluginExecutionContext context)

{

if (context.InputParameters.Properties.Contains(“Target”) &&

context.InputParameters.Properties[“Target”] is DynamicEntity)

{

entity = (DynamicEntity)context.InputParameters.Properties[“target”];

ICrmService service = context.CreateCrmService(true);

if (entity.Name ==“new_testentity”)

{

// Find maximum number

int maxNumber = FindMaxNumber(service);

nextMaxNumber=maxNumber + 1;

if (nextMaxNumber > 0)

{

bool isRetrivePrefixSuccess = RetrievePrefixSufixAndStartNumber(service);

if (isRetrivePrefixSuccess)

{

if (nextMaxNumber >= startNumber)

{

string buildAutoNumber = prefix + seperator + nextMaxNumber.ToString();

uniqueId = buildAutoNumber;

StringProperty uId = new StringProperty(“new_uniqueid”, uniqueId);

entity.Properties.Add(uId);

CrmNumber nextNumber = new CrmNumber();

nextNumber.Value = nextMaxNumber;

CrmNumberProperty uniqueNo = new CrmNumberProperty(“new_uniqueno”, nextNumber);

entity.Properties.Add(uniqueNo);

}

}

}

}

}

}

private int FindMaxNumber(ICrmService service)

{

int maxNo=0;

QueryExpression query = new QueryExpression();

query.EntityName = “new_testentity”;

ColumnSet cols = new ColumnSet();

cols.AddColumn(“new_uniqueno”);

query.ColumnSet = cols;

query.AddOrder(“new_uniqueno”, OrderType.Descending);

PagingInfo pageInfo = new PagingInfo();

pageInfo.Count = 1;

pageInfo.PageNumber = 1;

query.PageInfo = pageInfo;

RetrieveMultipleRequest request = new RetrieveMultipleRequest();

request.Query = query;

request.ReturnDynamicEntities = true;

RetrieveMultipleResponse response = (RetrieveMultipleResponse)service.Execute(request);

DynamicEntity testEntity = (DynamicEntity)response.BusinessEntityCollection.BusinessEntities[0];

for (int i = 0; i < testEntity.Properties.Count; i++)

{

if (testEntity.Properties.Contains(“new_uniqueno”))

{

CrmNumber uniqueNumber = (CrmNumber)testEntity.Properties[“new_uniqueno”];

maxNo = uniqueNumber.Value;

}

}

return maxNo;

}

private bool RetrievePrefixSufixAndStartNumber(ICrmService service)

{

try

{

QueryByAttribute query = new QueryByAttribute();

query.EntityName = “new_autonumber”;

ColumnSet cols = new ColumnSet();

cols.AddColumn(“new_startnumber”);

cols.AddColumn(“new_prefix”);

cols.AddColumn(“new_currentnumber”);

cols.AddColumn(“new_separator”);

query.ColumnSet = cols;

query.Attributes = new string[] { “new_entityname” };

query.Values = new object[] { “new_testentity” };

RetrieveMultipleRequest request = new RetrieveMultipleRequest();

request.Query = query;

request.ReturnDynamicEntities = true;

RetrieveMultipleResponse response = (RetrieveMultipleResponse)service.Execute(request);

DynamicEntity dynamicsEntity = (DynamicEntity)response.BusinessEntityCollection.BusinessEntities[0];

if (dynamicsEntity.Properties.Count > 0)

{

// DynamicEntity autoNumberEntity = (DynamicEntity)dynamicsEntity.BusinessEntities[0];

// Extract the fullname from the dynamic entity string fullname;

for (int i = 0; i < dynamicsEntity.Properties.Count; i++)

{

if (dynamicsEntity.Properties.Contains(“new_startnumber”))

{

CrmNumber startNo = (CrmNumber)dynamicsEntity.Properties[“new_startnumber”];

startNumber = startNo.Value;

}

if (dynamicsEntity.Properties.Contains(“new_prefix”))

{

String prefixId = (String)dynamicsEntity.Properties[“new_prefix”];

prefix = prefixId.ToString();

}

if (dynamicsEntity.Properties.Contains(“new_separator”))

{

String seperaterId = (String)dynamicsEntity.Properties[“new_separator”];

seperator = seperaterId.ToString();

}

}

}

return true;

}

catch (SoapException ex)

{

throw ex;

}

}

}

#endregion

}