DirectorySearcher.Asynchronous Property


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

 property bool Asynchronous { bool get(); void set(bool value); };
public bool Asynchronous { get; set; }
public bool Asynchronous { get; set; }
member this.Asynchronous : bool with get, set
member this.Asynchronous : bool with get, set
Public Property Asynchronous As Boolean

Property Value


true if the search is asynchronous; false otherwise.



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 src = new DirectorySearcher(entry);  
//Set the Asynchronous property to true.  
src.Asynchronous = true;  
//Use the FindAll method to get search results.  
SearchResultCollection res = src.FindAll();  


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.

Applies to