Inherits RadAsyncUpload and OnFileUploaded

[Aleksandar]

For some reason, I am not getting OnFileUploaded to fire when I inherit from RadAsyncUpload in my custom web server component. Could someone tell me whether this is possible or not?

Regards,
Alex

[Genady Sergeev]

Hello Aleksandar,

I've just tried that and it seems to work fine. Here is my code:

public partial class Default2 : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        var foo = new Foo();
        Form.Controls.Add(foo);
        foo.FileUploaded += new FileUploadedEventHandler(foo_FileUploaded);
    }

    void foo_FileUploaded(object sender, FileUploadedEventArgs e)
    {
        Response.Write("Test");
    }
}

public class Foo : RadAsyncUpload
{
    public int Fooo { get; set; }
}

Does this work on your side?

Regards,
Genady Sergeev
the Telerik team

[Aleksandar]

Hi Genady,

This is what I am talking about:

<DefaultProperty("Property_Is_deleted"), ToolboxData("<{0}:ClassName runat=server></{0}:ClassName>")> _
Public Class ClassName
    Inherits RadAsyncUpload

    Protected Overrides Sub OnInit(e As System.EventArgs)
        MyBase.OnInit(e)
        MyBase.Skin = "Windows7"
        MyBase.EnableEmbeddedBaseStylesheet = True
        MyBase.EnableAjaxSkinRendering = True
    End Sub

     Protected Overrides Sub OnFileUploaded(e As Telerik.Web.UI.FileUploadedEventArgs)
        MyBase.OnFileUploaded(e) ' This does not fire
    End Sub

    Protected Overrides Function OnValidatingFile(e As Telerik.Web.UI.Upload.ValidateFileEventArgs) As Boolean
        Return MyBase.OnValidatingFile(e) ' Neither this fires
    End Function

    Protected Overrides Sub CreateChildControls()
        MyBase.CreateChildControls()
        Me.OnClientAdded = "bor_ImageUpload_OnClientAdded"
        Me.OnClientFileUploaded = "bor_Open_ImageUpload_FileUploaded"
        Me.OnClientDeleting = "bor_Open_ImageUpload_ImageRemoved"
        Me.OnClientFileUploadFailed = "bor_Open_ImageUpload_UploadFailed"
        Me.MaxFileInputsCount = 1
        Me.OverwriteExistingFiles = True
        Me.MultipleFileSelection = Telerik.Web.UI.AsyncUpload.MultipleFileSelection.Disabled
        Me.InitialFileInputsCount = 1
        Me.ReadOnlyFileInputs = True
        Me.ControlObjectsVisibility = ControlObjectsVisibility.None
        Me.AutoAddFileInputs = True
        Me.AllowedFileExtensions = {"jpg", "jpeg", "png", "gif"}
        Me.InputSize = 10
        Me.TargetFolder = "~/TargetFolder"
    End Sub
End Class

Above does not work for me. Or I might be doing something wrong. So the question is: How do I inherit RadAsyncUpload in a custom class? OnFileUploaded fires on a page level, but does not fire on a class level.
Looking forward for resolution for this as it stops planned development...

[Aleksandar]

Any news on this? At least acknowledgement that this is an issue (a bug) would help.

Alex

[Peter Filipov]

Hi Aleksandar,

OnFileUploaded is an event handler and it is not possible to override it. Please attach a handler to FileUploaded event.
OnClientValidationFailed is a client side event.

Here is a sample code:

Imports Telerik.Web.UI


Partial Class InheritAsyncUpload
    Inherits System.Web.UI.Page

    Protected Sub Page_Load(ByVal sender As Object, ByVal e As EventArgs) Handles Me.Load

        Dim asyncClass As New ClassName()


        Form.Controls.Add(asyncClass)
        AddHandler asyncClass.FileUploaded, AddressOf FileUploadedHandler


    End Sub


    Sub FileUploadedHandler(ByVal sender As Object, ByVal args As FileUploadedEventArgs)

        'some logic here


    End Sub


End Class

Public Class ClassName
    Inherits RadAsyncUpload

    Protected Overrides Sub OnInit(ByVal e As System.EventArgs)
        MyBase.OnInit(e)
        MyBase.Skin = "Windows7"
        MyBase.EnableEmbeddedBaseStylesheet = True
        MyBase.EnableAjaxSkinRendering = True
    End Sub

    'Protected Overrides Sub OnFileUploaded(ByVal e As Telerik.Web.UI.FileUploadedEventArgs)
    '    MyBase.OnFileUploaded(e) ' This does not fire
    'End Sub

    'Protected Overrides Function OnValidatingFile(ByVal e As Telerik.Web.UI.Upload.ValidateFileEventArgs) As Boolean
    '    Return MyBase.OnValidatingFile(e) ' Neither this fires
    'End Function

    Protected Overrides Sub CreateChildControls()
        MyBase.CreateChildControls()
        'Me.OnClientAdded = "bor_ImageUpload_OnClientAdded"
        'Me.OnClientFileUploaded = "bor_Open_ImageUpload_FileUploaded"

        'Me.OnClientFileUploadFailed = "bor_Open_ImageUpload_UploadFailed"
        Me.MaxFileInputsCount = 1

        Me.MultipleFileSelection = Telerik.Web.UI.AsyncUpload.MultipleFileSelection.Disabled
        Me.InitialFileInputsCount = 1


        Me.AutoAddFileInputs = True
        Me.AllowedFileExtensions = {"jpg", "jpeg", "png", "gif"}
        Me.InputSize = 10
        Me.TargetFolder = "~/TargetFolder"
    End Sub
End Class

All the best,
Peter Filipov
the Telerik team

[Aleksandar]

Hi Peter,

Please forget the page for now, I am inheriting RadAsyncUpload in custom server control (as in my previous code) and within the control, I need to know when the file is uploaded. Again, this event fails to trigger WITHIN the control for some reason:

Protected Overrides Sub OnFileUploaded(ByVal e As Telerik.Web.UI.FileUploadedEventArgs)

        MyBase.OnFileUploaded(e) ' This does not fire

End Sub

How do I know when OnFileUploaded event executes from WITHIN the control inheriting from RadAsyncUpload?


Regards,
Alex

[Aleksandar]

The solution:

AddHandler to FileUploaded event:

Protected Overrides Sub OnInit(e As System.EventArgs)
        MyBase.OnInit(e)
        AddHandler MyBase.FileUploaded, AddressOf OnMyFileUploaded
End Sub

And then just create the event and capture uploaded file

Private Sub OnMyFileUploaded(sender As Object, e As Telerik.Web.UI.FileUploadedEventArgs)
'Capture file here
End Sub

Regards,
Alex

[yiqiang]

Hi peter,

is there ValidatingFile event on RadAsyncUpload?

I just want filter out ".exe" and ".dll" to upload using RadAsyncUpload before physical upload.

Thanks,

Liu

[Peter Filipov]

Hello Yiqiang,

To validate file extension you need to set AllowedFilesExtension property. Indeed RadAsyncUpload does not provide validation event. Here is the list with client-side events.

All the best,
Peter Filipov
the Telerik team