Most Validation Uses in ASP.NET with C#

1. Email id validation
2. Mobile number validation

Email id validation

1. /^\w+([-+.']\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*$/ 

Mobile number validation

1. /^((\\+91-?)|0)?[0-9]{10}$/ (with or without +91 or 0)

Delete Previous version files in all windows

1) Run
2) Cleanmgr
3) Scan Your Files And Select Previous Windows Installation
4) Delete Files

Happy To Help You