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Display the list of customer's contacts

This article describes how to display only the contacts in the drop-down list when selecting a contractor in a process task.

A contractor's contacts can be written to a drop-down list in the script when changing a Contractor variable.
For the script to work, add the following assembly:
EleWise.ELMA.CRM

Context variables:

context.Contact - drop-down list; the Select from list only box must be checked in its properties
context.Customer - variable of the Contractor type

Script:
context.Contact=null;
var settings = (DropDownListSettings)context.GetSettingsFor(c => c.Contact);
settings.Items.Clear();
if(context.Customer!=null)
{
  foreach (var item in context.Customer.Contacts.ToList())
  {
    settings.Items.Add(new DropDownItem
    {
      Key = item.Id.ToString(),
      Value = string.Format("{0} {1} {2}", item.Firstname, item.Middlename, item.Surname) //First name, middle name, last name
    });     
  }
  
}
settings.Save();
You can work with contacts in other scripts using the ID, which will be stored in the key property of the resulting list.