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ManagedPropertyBoostCollection Interface

SharePoint 2010

Represents a ManagedPropertyBoostCollection as a list of managed property boost components.

Namespace:  Microsoft.SharePoint.Search.Extended.Administration.Schema
Assembly:  Microsoft.SharePoint.Search.Extended.Administration (in Microsoft.SharePoint.Search.Extended.Administration.dll)

[SharePointPermissionAttribute(SecurityAction.LinkDemand, ObjectModel = true)]
[SharePointPermissionAttribute(SecurityAction.InheritanceDemand, ObjectModel = true)]
public interface ManagedPropertyBoostCollection : IEnumerable<ManagedPropertyBoostComponent>, 

Managed property boosts are used to influence the ranking of search results by creating boosts that are triggered based on the contents of a managed property. For example, assume that there is a managed property called [Language] that specifies the language for a document. Some valid values for [Language] would be the strings "English", "Norwegian" and "German". A managed property boost could then be created to boost the ranking for documents where the managed property [Language] contained the string "English". This managed property boost would then be associated with a rank profile. When the rank profile is used through search, English documents would then be given a rank boost.

This sample shows how to boost English documents with the default rank profile.

            using System;
            using Microsoft.SharePoint.Search.Extended.Administration;
            using Microsoft.SharePoint.Search.Extended.Administration.Schema;
            namespace ManagedPropertyBoostComponentSample
                class Program
                    static void Main(string[] args)
                            SchemaContext schemaContext = new SchemaContext();
                            Schema schema = schemaContext.Schema;
                            //Fetch the rank profile named 'default' which is the default rank profile. 
                            RankProfile rankProfile = schema.AllRankProfiles["default"];
                            //Fetch the managed property named 'language'. This managed property exists
                            //by default and is populated with the language of documents, for example: 'en' 
                            //for English documents.
                            ManagedProperty managedProperty = schema.AllManagedProperties["language"];
                            ManagedPropertyBoostCollection managedPropertyBoosts = rankProfile.GetManagedPropertyBoosts();
                            //The format of the string is 'matchString, boostValue': in this case 'en, 100'.
                            managedPropertyBoosts.Create(managedProperty, "en, 100"); 
                            //Print all managed property boost components for the rank profile named 'default'.
                            //This will also list the new managed property boost component if it was successfully created.
                            foreach (var component in managedPropertyBoosts)
                                Console.WriteLine("managed property: " + component.ManagedPropertyReference.Name + " boostValue: " + component.BoostValue);
                        catch (Exception ex)
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