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Custom Handler and temp folder.

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AsyncUpload

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answered on 28 Sep 2012, 03:07 PM

Hi,

Thank you for sharing these documentation issues and for your concern with RadControls and please excuse us for the inconveniences caused by them.

One important thing that should be added about this scenario is that such behavior ("RadAsyncUpload's file handler can be inherited and extended to support custom functionality, for example, saving images directly to a database, without using temporary folder.") will be possible when the upload of the file is performed in one chunk only. That is why from the upcoming Q3 release we have implemented a DisableChunkUpload property in RadAsyncUpload that will make such behavior achievable again.

Hope this information will be helpful.

Greetings,
Plamen
the Telerik team

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answered on 04 Dec 2012, 11:11 PM

I've just tried this with a custom handler (similar in nature to the demo).

I have also added the property to disable the chunks:

<telerik:RadAsyncUpload runat="server"

MultipleFileSelection="Automatic" MaxFileInputsCount="0"

PostbackTriggers="rbSave" UploadedFilesRendering="BelowFileInput" OnClientFileUploaded="onClientFileUploaded"

DisableChunkUpload="true"

HttpHandlerUrl="~/Classes/Core/Handlers/CustomRadAsyncUploadHandler.ashx" OnClientFileUploadRemoving="fileUploadRemoving" />

Works great locally. No temp folders or files are created.

When I deploy to an IIS server, however, I get the same APP_DATA can't create permission problem that I had before.

What is going on??

My handler is pretty simple and I do everything that was suggested in this post + others regarding this situation and this property.

Imports Telerik.Web.UI

Public Class CustomRadAsyncUploadHandler

Inherits AsyncUploadHandler

Implements System.Web.SessionState.IRequiresSessionState

Protected Overrides Function Process(file As Telerik.Web.UI.UploadedFile, context As System.Web.HttpContext,

configuration As Telerik.Web.UI.IAsyncUploadConfiguration, tempFileName As String) As Telerik.Web.UI.IAsyncUploadResult

'The BASE process saves things to TEMP location/folder. We don't want that.

'Return MyBase.Process(file, context, configuration, tempFileName)

Dim iDocumentID As Int64? = Nothing

Dim result As CustomRadAsyncUploadResult = Me.CreateDefaultUploadResult(Of CustomRadAsyncUploadResult)(file)

Dim config As CustomRadAsyncUploadConfiguration = TryCast(configuration, CustomRadAsyncUploadConfiguration)

If config IsNot Nothing Then

'Save our file to the TEMP area for documents

SetData.SetDocumentData.SetTempDocument(config.eDocmentCategoryType, file, config.gBatchID, config.eDocumentLocationType, iDocumentID)

'Then... pass on some vital information for the FileUploaded handler

result.iDocumentID = iDocumentID

result.eDocumentLocationType = config.eDocumentLocationType

result.sAjaxManagerClientID = config.sAjaxManagerClientID

End If

Return result

End Function

End Class

answered on 05 Dec 2012, 01:27 AM

I take that back....
It tries to create the same 2 things locally as well:

App_Data
RadUploadTemp
RadUploadTestFile

If I'm using the custom handler.
If I'm not using the BASE process method in the custom handler.
If I'm DisableChunkUpload=True.
If my custom handler process uploads directly to the DB.

WHY does it have a need to have a WRITABLE directory and put this bogus 0kb file out there ???????????

This goes to part of the point of doing this whole thing to begin with... We don't want to have to setup permissions at the IIS/directory level for something like this. For example, I do a nightly build that wipes out a directly and lays down my newly built application. Guess what doesn't work automatically? The uploads because it mysteriously needs the bogus permission re-attached.

Can someone from telerik explain this?
Wasn't the DisableChunkUpload property supposed to take care of this?

answered on 26 Jul 2013, 02:13 PM

Hi Bob,

Could you explain what exactly do you want to achieve? You want do change the temporary folder to be different than the App_Data\RadUploadTemp or to disable it at all. Bellow are few approaches you could use:

To change it:
1. Set the TemporaryFolder property.

To disable it (This means to prevent uploading uploading file into the temporary folder):
1. Set Manualupload to true.
2. Set DisableChunkUpload to true.
3. Set TemporaryFolder to point the same location where you will save files.

<telerik:RadAsyncUpload ID="RadAsyncUpload1" runat="server"

ManualUpload="true"

TemporaryFolder="~/Uploads"

OnFileUploaded="RadAsyncUpload1_FileUploaded"

DisableChunkUpload="true">

</telerik:RadAsyncUpload>

<asp:Button runat="server" ID="btnUpload" Text="Upload"/>

protected void RadAsyncUpload1_FileUploaded(object sender, FileUploadedEventArgs e)

{

string path = Server.MapPath("~/Uploads/");

e.File.SaveAs(path + e.File.FileName);

}

Note that when file is selected, RadAsyncUpload is looking for the Temporary folder. It might not save upload file in it, but it will create RadUploadTestFile to verify if the application has write permission.

Regards,
Hristo Valyavicharski
Telerik

answered on 11 Sep 2013, 01:47 PM

Hi,
i tried to do exactly as Hristo said but i noticed that the indicator of uploading is always red and FileUploaded event is never fired while RadUploadTestFile file in the TemporaryFolder is correctly created.
this is my code

<telerik:RadAsyncUpload ID="RadAsyncUpload1" runat="server" AllowedFileExtensions="csv,txt"

MaxFileSize="524288" OnFileUploaded="RadAsyncUpload1_FileUploaded" OnClientValidationFailed="validationFailed"

Skin="Sunset" DisableChunkUpload="true" TemporaryFolder="~/upload" UseApplicationPoolImpersonation="true" ManualUpload="true">

</telerik:RadAsyncUpload>

How can i solve it?

Regards

Simone