Filter File extension With FileUpload

Question

I am writing an asp.net web app which involves the use of the FileUpload control.

Right now, this particular FileUpload control only expects .z

Answer 1

I believe it is not possible.Filter by file type in browser is not control by asp.net.It is a browser functionality.

This question already asked in stackoverflow.Please click filter the file type with the file upload control

Answer 2

To select images in fileupload control..

hope it will help you

asp:RegularExpressionValidator ID="rexp" runat="server" ControlToValidate="fupProduct"
     ErrorMessage="Only .gif, .jpg, .png, .tiff and .jpeg"
     ValidationExpression="(.*\.([Gg][Ii][Ff])|.*\.([Jj][Pp][Gg])|.*\.([Bb][Mm][Pp])|.*\.([pP][nN][gG])|.*\.([tT][iI][iI][fF])$)"></asp:RegularExpressionValidator

Answer 3

It's possible on client-side! But, remember to do the server-side validation.

This two links show it: http://aspalliance.com/1614_Adding_Filter_Action_to_FileUpload_Control_of_ASPNET_20.all http://www.codeshode.com/2011/07/validate-file-extension-for-aspnet.html

Answer 4

You can try the below code.

<asp:FileUpload ID="UploadFile" accept="image/*" multiple="false" runat="server" BorderStyle="None" />

It works with modern browsers.

Do not forget to validate the extensions using code behind procedures.

Answer 5

you can create validate file extension from the ASP.NET FileUpload Control

I believe you could go for this solution

Validate File Extension for ASP.NET FileUpload Control