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DirectorySearcher.Asynchronous Property

Gets or sets a value that indicates if the search is performed asynchronously.

Namespace:  System.DirectoryServices
Assembly:  System.DirectoryServices (in System.DirectoryServices.dll)

[DSDescriptionAttribute("DSAsynchronous")]
[ComVisibleAttribute(false)]
public bool Asynchronous { get; set; }

Property Value

Type: System.Boolean
true if the search is asynchronous; false otherwise.

An asynchronous search can show results as they are found while simultaneously searching for additional results. This is useful for tasks such as populating list boxes.

The default setting for this property is false.

The following C# example shows how to create an asynchronous search.

using System.DirectoryServices;
...
// Bind to the users container.
DirectoryEntry entry = new DirectoryEntry("LDAP://CN=users,DC=fabrikam,DC=com");
// Create a DirectorySearcher object.
DirectorySearcher mySearcher = new DirectorySearcher(entry);
//Set the Asynchronous property to true.
src.Asynchronous = true;
//Use the FindAll method to get search results.
SearchResultCollection res = src.FindAll();

.NET Framework

Supported in: 4.6, 4.5, 4, 3.5, 3.0, 2.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1
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