Set “Look For” for particular entities in Multi-entity Lookup Field like party List

What is the Issue?

Developers got requirement once in his development career to set the lookup value with only some particular entities like he only needs “users”, “contacts” and restrict other entity’s records to be selected. But he/she have to implement this for some conditions like on change of some field value. But this kind of lookup always shows all the entities in lookup.

The Reason-

This lookup field shows all the entities as it’s default OOB behavior of the multi-entity Lookup (Party List).


You can handle this situation with the help of client side scripting (JavaScript).

Lets have Example-

I want to show only “Contact” and “User” records in “To”,”Cc” and “Bcc” fields (Party List) of Email Entity depending on “Email Behavior” option set field value.


I have 2 conditions here –

  1. Default E-Mail : should show all the entities records in lookup field as default behavior of field.
  2. E-mail To Contact or Users Only: should show only “Contact” and “User” entities records in lookup field and all others should be hidden.

Lets do it with Javascript here-


Add function “filterOnLoad” at locations-
1. “onLoad” event of form with “Pass execution Context as first Argument” checked.
2. “onChange” event of “EMail Behavior” field with “Pass execution Context as first Argument” checked.

Publish your customization and here its done…

Please Note : for “From” field has different behavior than these all above fields. “From” field is lookup/PartyList for only “Users” and “Queues”.


You can refer My other blog post related to this one – Filter Required/Regarding (partylist data type) fields…

Hope this will help you.

Enjoy MS CRM!!!

New Unified Interface of MS Dynamics 365 CRM – Change Behavior to Classic Mode

What is the Issue?

New User interface of Ms Dynamics CRM(V9.1) with Unified Interface is bit confusing. Navigation is becoming very easy but bit complex for all the developers. Developers have much struggle to find the settings and many other options in MS CRM which was very easy to get through site map. Developers are not very much used to this behavior of the CRM. So, the question here is “where is Classic version of CRM?”

The Reason-

With new releases of MS Dynamics CRM 9.1 Microsoft is forcing the user to use Unified interface for all the apps installed in the MS CRM. Microsoft is providing the some new feature along with this Unified Interface.


You can choose the behavior of your CRM application as Unified Interface or Classic CRM (developer is very familiar to). You need to change some setting of your application-

  1. When you are creating new online version you are getting redirected to MS Dynamics 365 My Apps.
  2. Also if you trying to hit the URL and opening app under My Apps (Sales,Sales Hub, Dynamics 365 – Custom), You are not able to see the classic mode of MS CRM. It is showing Unified Interface as below-
  3. Login to the URL with your MS Dynamics administrator credentials. You will be redirected to window below-
  4. Click on Environments on Left hand side Navigation. It will show all your environments.
  5. Select environment( MS CRM Organization Name) and click on Settings on command bar.
  6. Under Product Section – > Click on Behavior –
  7. Set Open in Classic Mode -> On
  8. Save your Setting.
  9. Login to your CRM Organization by using our traditional way –
  10. You will be able to see your classic mode of MS CRM now with all the features you are familiar with-


Continue with your development with classic mode…

Enjoy Ms CRM!!!

C#: Unable to connect Dynamic365

What is the issue?

While coding with C#, developers struggles to connect with Dynamics 365. OrganizationService/ OrganizationServiceProxy object contains null and connection fails.

The Reason-

The reason behind this issue –
1. dll support
2. Wrong Connection String
3. Configuration settings
4. SSL/TLS setting


solution according to the reason-
1. dll Support-
You should know which dlls are supported to connect Dynamics 365.
Many times the CRM versions differs and due to CRM upgrades the dlls used becomes outdated for new Versions. Currently many developers faces this issue if you are using Dynamics365 online version . Current version of CrmSDK is V9.0.0.7. and this should be used.
You can add reference of CrmSDK by using Nuget Package Manager-


You can change the version according to recent updates by Microsoft.
2. Connection String-
Wrong connection string might be the problem and for Dynamics 365 online version you can use connection string like-


<YourOrgName>– This is your Organization Name.
<CRMRegion>– This is the Region you choose while creating organization.

Also you can find this string navigating Customization-> Developer Resources in Dynamics 365.

Other way to connect CRM is providing each parameter Separately like-

 Microsoft.Xrm.Tooling.Connector.CrmServiceClient conn = new CrmServiceClient(uName, pwd, "NorthAmerica", _crmOrganizationName, isOffice365: true);

Also you need to provide Username and password(converted to secured password) Properly.
3.Configuration Settings-
Many times application throws an exception like “Metadata contains a reference that cannot be resolved” .
You provides the connection string properly, every thing is correct but still you found the OrganizationService/ OrganizationServiceProxy showing null.
This happens in some particular domain networks. In this case you have to enable the Proxy setting and for this add the following tag under the configuration tag to your Web.Config /app.config file-

<defaultProxy useDefaultCredentials=”true” enabled=”true”>

This will only use the credentials provided by you in connection string.
4. SSL/TSL settings-
Your application fails to connect Dynamics365 CRM if it is using some particular security protocol. To connect successfully , you need to explicitly mention the security by adding the following line just before the connection establishment lines-

ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls12;

Use Tls12/SSL/Tls11 according to security protocol used by Dynamics365 .

Hope this will be helpful to connect your organization.