I have a FileUpload
control (and it's not inside an UpdatePanel
) and its hasFile
property is always False
.
Any thought?
7 Answers
Add a trigger for your UpdatePanel
This will force a postback when the upload button is clicked.
Also add the line below to the Page_Load
You cannot upload files using AJAX => you should not be placing a FileUpload control inside an UpdatePanel because this UpdatePanel sends an AJAX request to the server.
I also uploaded a file using the FileUpload control, but the HasFile property returned false. Turn out that FileUpload.HasFile is also false if you upload an empty file. In this case adding some text to the file you want to upload will make the Hasfile property return true.
To complement the example given by @dbFrameIT Support:
your code behind (c#)
the whole time it was about the permissions i had(or didn't have to be more specific) over the file am trying to upload, i granted the user the sufficient permissions and it all went well.
thanks a lot for your help and posts.
Sometimes fileUpload has problems. You can use simple input:
In code save file to server:
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And file will save at UploadDocuments folder in your ASP.NET application (server)
You can try to take your button off from the UpdatePanel;As far as I get, UpdatePanels always update when something inside any other update panel updates, so if your button postback, your FileUpload control also postback and lose the file reference.
protected by Community♦May 4 '16 at 14:12
![Asp.net Upload File Hasfile Always False Asp.net Upload File Hasfile Always False](https://docs.microsoft.com/en-us/aspnet/web-forms/overview/data-access/working-with-binary-files/uploading-files-cs/_static/image13.png)
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FileUpload and UpdatePanel: FileUpload.HasFile is always FALSE.
Feb 15, 2010 10:48 AM|VansFannel|LINK
Hello.
I'm developing an ASP.NET application with C# and Visual Studio 2008 SP1. I'm using WebForms.
Asp.net File Upload Has File Always False
I have an ASPX page with two UpdatePanels, one on the left that holds a TreeView and other on the right where I load dynamically user controls.
One user control, that I used on right panel, has a FileUpload control and a button to save that file on server. The ascx code to save control is:
<asp:UpdatePanel runat='server' RenderMode='Inline'
UpdateMode='Conditional'>
<ContentTemplate>
<asp:Button runat='server' Text='Guardar'
CssClass='button' />
</ContentTemplate>
<Triggers>
<asp:PostBackTrigger ControlID='Save' />
</Triggers>
</asp:UpdatePanel>
I make a full postback to upload the file to the server and save it to database. But I always getting False on FileUpload.HasFile.
I problem is the right UpdatePanel. I need it to load dynamically the user controls. This panel has three UpdatePanels to load the three user controls that I use.
Maybe I can use an Async File Uploader or delete the right Update Panel and do a full postback to load controls dynamically.
Any advice?
File Upload Hasfile Always False
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