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Current release of RadUpload can send extra information for each of uploaded files. We named this information "Custom Parameters". More information about them you can find in the Passing custom params to the server side handler
article. Please note to send a custom parameter(s) you need a file to upload too, i.e. you will not be able to upload only your custom parameter.
Because of this it will be a good practice to enter all the meta-info first and later to upload it together with the related file. Here are two approaches:
- Upload a single file.
This scenario is very simple and we highly suggest that you should try it first.
- Set the IsMultiselect property (of RadUpload) to False.
- Handle the FileUploadStarting event.
- Inside the event handler attach the meta-info to the current upload.
- Upload multiple files.
This scenario involves customization of the RadUploadItem's Template. Even more you should implement a mechanism to search the elements' visual tree for your meta-info fields. This method requires a lot of development effort. More about it you can find in this forum thread.
We hope this information will help you to find the right solution for your task. However if you have more questions please drop us a line.
All the best,
the Telerik team
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