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WebBrowser.IsOffline Property

.NET Framework 4.5

Gets a value indicating whether the WebBrowser control is in offline mode.

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

[BrowsableAttribute(false)]
public bool IsOffline { get; }

Property Value

Type: System.Boolean
true if the WebBrowser control is in offline mode; otherwise, false.

Exceptions

Exception	Condition
ObjectDisposedException	This WebBrowser instance is no longer valid.
InvalidOperationException	A reference to an implementation of the IWebBrowser2 interface could not be retrieved from the underlying ActiveX WebBrowser control.

Remarks

In offline mode, the WebBrowser control is forced to load Web pages from the local cache rather than downloading them.

Version Information

.NET Framework

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

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

.NET Framework Security

SecurityPermission
for immediate callers to use this control. Demand value: LinkDemand; Named Permission Sets: FullTrust.

Platforms

Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

Reference

WebBrowser Class

System.Windows.Forms Namespace

Other Resources

WebBrowser Control

IWebBrowser2 Interface

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