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View this topic on docs.devexpress.com (Learn more)

DXCommonDialog.HelpRequest Event

Occurs when the user clicks the Help button on a file dialog and allows you to provide a help link or cancel opening help resources.

Namespace:DevExpress.Xpf.Dialogs
Assembly:DevExpress.Xpf.Dialogs.v19.2.dll

Expanded Syntax

Expanded Event Data

The event handler receives an argument of type HelpRequestEventArgs containing data related to this event.

The following HelpRequestEventArgs properties provide information specific to this event.
Property Description
Cancel Gets or sets a value indicating whether the event should be canceled.
HelpLink Gets or sets a help link that is opened when an end-user clicks the help button.

Expanded Remarks

The HelpRequest event is raised when an end user presses the help button. The help button is available when the DXFileDialog.ShowHelp property is set to true.

Use the HelpRequest event to provide a help link for end users (using the HelpRequestEventArgs.HelpLink property) or cancel opening help resources.

Note

The provided link is opened using the System.Diagnostics.Process.Start method.

The code sample below demonstrates how to provide a custom help link by handling the HelpRequest event.

Expanded See Also

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