Events
This article lists the events specific to all of the RadFileDialog controls.
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PreviewClosed: This event occurs when the dialog is closing. The event arguments are of type WindowPreviewClosedEventArgs. You can use the arguments to cancel the event.
Example 1: Cancel dialog closing
private void FileDialog_PreviewClosed(object sender, WindowPreviewClosedEventArgs e) { e.Cancel = true; } Closed: This event occurs when the dialog is closed. The event arguments are of type WindowClosedEventArgs.
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ExceptionRaised: This event occurs when an exception is raised. This event could be raised in different occasions, for example - if the selected folder cannot be accessed or if the file path is too long, or when there is an error while searching, etc.
Example 2: Showing an alert when an error appears
private void openDialog_ExceptionRaised(object sender, FileBrowserExceptionRaisedEventArgs e) { MessageBox.Show(e.Exception.Message); } -
DirectoryRequesting: This event can be used to filter the navigation RadTreeView and RadBreadcrumb or any Custom Places that are added. The following example demonstrates how you can filter out the "D:\" and "K:\" directories:
Example 3: Filtering the D and K directories
private void OpenFileDialog_DirectoryRequesting(object sender, Telerik.Windows.Controls.FileDialogs.DirectoryRequestingEventArgs e) { if (e.Directory.FullName.StartsWith("D:\") || e.Directory.FullName.StartsWith("K:\")) { e.Cancel = true; } }If the InitialDirectory of the RadFileDialog is filtered out as in Example 3, the current directory on load will be the default one.
Image 1: Unfiltered Directories
Image 2: Filtered Directories Based on Example 3
