Convert C# code to VB.NET

Good evening,

I picked up a code in C# on CodeProject(): <a href="https://www.codeproject.com/Questions/1072006/Format-the-textbox-to-replace-the-set-placeholder">< /a>

I understand a little but I find myself unable to convert the provided code into VB.NET (online)! You have to admit that I started from nothing, and that consequently, it quickly becomes difficult.

Thank you in advance to all who will help me,

Best regards,

Claude

All I could find for a placeholder on two username and password textbox. Most of the time, I rather struggled!