Restricting uploading files based on its extension
12 Apr 20171 minute to read
Allow Extension
Files are filtered before they are uploaded. You can select the files to be filtered by using browse button. The ExtensionsAllow property allows upload of the selected extensions only. You can give multiple extensions by using comma (,). The data type is string.
NOTE
Prepend dot (.) symbol with extension like “.pdf”.
The following code helps you for the configuration of ExtensionsAllow property in UploadBox.
<ej-upload-box id="UploadDefault" save-url="//mvc.syncfusion.com/Services/FileUpload/UploadBox/saveFiles" remove-url="//mvc.syncfusion.com/Services/FileUpload/UploadBox/removeFiles" extensions-allow=".docx,.pdf"></ej-upload-box>
Deny Extension
Files are filtered before they are uploaded. You can select the files to be filtered by using browse button. The ExtensionsDeny property denies upload of the selected extensions. You can give multiple extensions by using comma (,). The data type is string.
NOTE
Prepend dot (.) symbol with extension like “.pdf”.
The following code helps you for the configuration of ExtensionsDeny property in UploadBox
<ej-upload-box id="UploadDefault" save-url="//mvc.syncfusion.com/Services/FileUpload/UploadBox/saveFiles" remove-url="//mvc.syncfusion.com/Services/FileUpload/UploadBox/removeFiles" extensions-deny=".docx,.pdf"></ej-upload-box>
NOTE
When ExtensionsDeny and ExtensionsAllow properties have same file extension, the extension will be allowed.