Returns a random name generated for the uploaded file.
A String value representing a random file name.
Sometimes, the uploaded file's client name, which can be obtained via the ASPxUploadControl.FileName property, may not suit your application's requirements. In this case, you can call the GetRandomFileName method to generate a random name for the file. The generated file name can be used when saving the file via the ASPxUploadControl.SaveAs method.