/// <summary>
/// Executes the search and returns only the first entry that is found.
/// </summary>
/// <param name="directoryEntry">The node in the Active Directory Domain Services hierarchy where the search starts.</param>
/// <param name="filter">The search filter string in Lightweight Directory Access Protocol (LDAP) format.</param>
/// <param name="propertiesToLoad">The set of properties to retrieve during the search.</param>
/// <returns>A SearchResult object that contains the first entry that is found during the search.</returns>
public static SearchResult FindOne(DirectoryEntry directoryEntry, string filter, string[] propertiesToLoad = null)
{
SearchResult response;
var settings = LdapConfigurationsHelper.GetSettings();
var searchScope = (SearchScope)Enum.Parse(typeof(SearchScope), settings.Scope);
using (var searcher = new DirectorySearcher(directoryEntry, filter)
{
SearchScope = searchScope, PageSize = 1
})
{
if (propertiesToLoad != null)
{
var padlock = new object();
Parallel.ForEach(propertiesToLoad, item =>
{
lock (padlock)
searcher.PropertiesToLoad.Add(item);
});
}
response = searcher.FindOne();
}
return(response);
}
/// <summary>
/// Executes the search and returns a collection of the entries that are found.
/// </summary>
/// <param name="directoryEntry">The node in the Active Directory Domain Services hierarchy where the search starts.</param>
/// <param name="filter">The search filter string in Lightweight Directory Access Protocol (LDAP) format.</param>
/// <param name="propertiesToLoad">The set of properties to retrieve during the search.</param>
/// <param name="sortOption">Gets or sets a value indicating the property on which the results are sorted.</param>
/// <param name="pageSize">Gets or sets a value indicating the page size in a paged search.</param>
/// <param name="sizeLimit">Gets or sets a value indicating the maximum number of the objects that the server returns in a search.</param>
/// <returns>A SearchResultCollection object that contains the results of the search.</returns>
public static SearchResultCollection FindAll(DirectoryEntry directoryEntry, string filter, string[] propertiesToLoad = null, SortOption sortOption = null, int pageSize = 0, int sizeLimit = 0)
{
if (pageSize < 0)
{
throw new ArgumentException("Page size cannot be less than 0!", nameof(pageSize));
}
if (sizeLimit < 0)
{
throw new ArgumentException("Size limit cannot be less than 0!", nameof(sizeLimit));
}
SearchResultCollection response;
if (sortOption == null)
{
sortOption = new SortOption();
}
var settings = LdapConfigurationsHelper.GetSettings();
var searchScope = (SearchScope)Enum.Parse(typeof(SearchScope), settings.Scope, true);
using (var searcher = new DirectorySearcher(directoryEntry, filter)
{
SearchScope = searchScope, PageSize = pageSize, SizeLimit = sizeLimit, Sort = sortOption
})
{
if (propertiesToLoad != null)
{
var padlock = new object();
Parallel.ForEach(propertiesToLoad, item =>
{
lock (padlock)
searcher.PropertiesToLoad.Add(item);
});
}
response = searcher.FindAll();
}
return(response);
}
