FileAttachmentsWindowsFormsModule.CustomSaveFiles Event

Occurs when attached files are about to be saved to a hard disk.

Namespace: DevExpress.ExpressApp.FileAttachments.Win

Assembly: DevExpress.ExpressApp.FileAttachment.Win.v20.2.dll

NuGet Package: DevExpress.ExpressApp.FileAttachment.Win

Declaration

C#

public event EventHandler<CustomFileListOperationEventArgs> CustomSaveFiles

VB.NET

Public Event CustomSaveFiles As EventHandler(Of CustomFileListOperationEventArgs)

Event Data

The CustomSaveFiles event's data class is CustomFileListOperationEventArgs. The following properties provide information specific to this event:

Property	Description
FileDataList	Specifies files about to be saved to a hard disk.
Handled	Gets or sets a value that indicates whether the event handler has completely handled the event or whether the system should continue its own processing. Inherited from HandledEventArgs.

Remarks

When the FileAttachmentController‘s SaveTo Action is executed or the file data manager’s (see FileAttachmentsWindowsFormsModule.GetFileDataManager) SaveTo method is invoked, a dialog prompting the end-user to choose the destination folder is invoked. You can override this behavior by handling the CustomSaveFiles event. After manually saving the attached files data, set the handler’s Handled parameter to true, to suppress display of the default dialog.

C#

using DevExpress.ExpressApp;
using DevExpress.ExpressApp.FileAttachments.Win;
using DevExpress.Persistent.Base;
//...
public class MyViewController : ViewController {
    FileAttachmentsWindowsFormsModule fileAttachmentsModule;
    protected override void OnActivated() {
        base.OnActivated();
        fileAttachmentsModule = Application.Modules.FindModule<FileAttachmentsWindowsFormsModule>();
        fileAttachmentsModule.CustomSaveFiles += fileAttachmentsModule_CustomSaveFiles;
    }
    void fileAttachmentsModule_CustomSaveFiles(object sender, CustomFileListOperationEventArgs e) {
        foreach (IFileData fileData in e.FileDataList) {
            //manually save attached files to a disk
            //...
        }
        e.Handled = true;
    }
    protected override void OnDeactivated() {
        fileAttachmentsModule.CustomSaveFiles -= fileAttachmentsModule_CustomSaveFiles;
        fileAttachmentsModule = null;
        base.OnDeactivated();
    }        
}

VB.NET

Imports DevExpress.ExpressApp
Imports DevExpress.ExpressApp.FileAttachments.Win
Imports DevExpress.Persistent.Base
'...
Public Class MyViewController
    Inherits ViewController
    Private fileAttachmentsModule As FileAttachmentsWindowsFormsModule
    Protected Overrides Sub OnActivated()
        MyBase.OnActivated()
        fileAttachmentsModule = Application.Modules.FindModule( _
        Of FileAttachmentsWindowsFormsModule)()
        AddHandler fileAttachmentsModule.CustomSaveFiles, _
        AddressOf fileAttachmentsModule_CustomSaveFiles
    End Sub
    Private Sub fileAttachmentsModule_CustomSaveFiles( _
    ByVal sender As Object, ByVal e As CustomFileListOperationEventArgs)
        For Each fileData As IFileData In e.FileDataList
            'manually save attached files to a disk
            '...
        Next fileData
        e.Handled = True
    End Sub
    Protected Overrides Sub OnDeactivated()
        RemoveHandler fileAttachmentsModule.CustomSaveFiles, _
        AddressOf fileAttachmentsModule_CustomSaveFiles
        fileAttachmentsModule = Nothing
        MyBase.OnDeactivated()
    End Sub
End Class