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HtmlHistory Class
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HtmlHistory Class

Manages the list of documents and Web sites the user has visited within the current session.


Namespace:  System.Windows.Forms
Assembly:  System.Windows.Forms (in System.Windows.Forms.dll)

[PermissionSetAttribute(SecurityAction.LinkDemand, Name = "FullTrust")]
public sealed class HtmlHistory : IDisposable

The HtmlHistory type exposes the following members.

Public propertyDomHistoryGets the unmanaged interface wrapped by this class.
Public propertyLengthGets the size of the history stack.

Public methodBackNavigates backward in the navigation stack by the specified number of entries.
Public methodDisposeReleases all resources used by the HtmlHistory.
Public methodEquals(Object)Determines whether the specified object is equal to the current object. (Inherited from Object.)
Public methodForwardNavigates forward in the navigation stack by the specified number of entries.
Public methodGetHashCodeServes as the default hash function. (Inherited from Object.)
Public methodGetTypeGets the Type of the current instance. (Inherited from Object.)
Public methodGo(Int32)Navigates to the specified relative position in the browser's history.
Public methodGo(String)Navigates to the specified Uniform Resource Locator (URL).
Public methodGo(Uri)Navigates to the specified Uniform Resource Locator (URL).
Public methodToStringReturns a string that represents the current object. (Inherited from Object.)

The managed HTML Document Object Model (DOM) keeps track of the sites that a user has visited within a given session. A session is defined as the length of time from when an application hosting the managed HTML DOM starts until the application closes.

When you use the Url property or Navigate method of the WebBrowser control to navigate to a new Web page, Internet Explorer may either retrieve the latest version of that page from the server or display the version that is currently in the Internet Explorer cache. By contrast, when you use HtmlHistory to navigate forward and backward in this stack, Internet Explorer will display the pages from the local computer's cache of downloaded Web content, unless the server indicates that the document's content should expire immediately. For more information on the history list and caching in Internet Explorer, see article 234067, "How To Prevent Caching in Internet Explorer," in the Microsoft Knowledge Base at http://support.microsoft.com.

The principal method of HtmlHistory is Go, which navigates either to the specified position in the navigation stack or to a new Uniform Resource Locator (URL). The Forward and Back methods navigate down and up the navigation stack, respectively, by the required number of entries.

.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

Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.
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