Hi Pavan,
Thank you for your interest in Syncfusion Products.
To get the file name for an uploaded file:Inorder to get the uploaded file name, FileName property is used like,
Label2.Text=this.UploadBox1.FileName;
Please refer the below link for sample files which illustrates the retrieving file names for multiple uploaded files.
http://websamples.syncfusion.com/samples/Tools.Web/6.4.0.15/51609/MultipleFileUploads_FileName.zipPlease let me know if you have any concerns.
Thanks,
Rekha