Thanks for contacting us.
Based on our understanding, we suspect that you need to list out all the files when “*” is entered in search box of FileExplorer. If so, then this requirement will work by default with our FileExplorer control.
Please refer to the below screenshot for your reference,
We have attached a sample for your reference which can be downloaded from the following link
If we have misunderstood, kindly share us clear details on your requirement to proceed further.