How to use both && and || in the same if statement condition?

I can’t seem to figure out how to use || and && in the same if statement ‘and, or’ being keywords for google it wasn’t really easy to google i got something like this

brackets
go
hide
if-statement
keyword
orm
password
racket
txt

this.Hide();

if (txt_Password.Text == "karasumyo2022" && txt_UserName.Text == "whatever" || "somethingelse"  )
{
    new Form1().Show();
    this.Hide();
}

>Solution :

You can use something like this by making use of brackets:

if (txt_Password.Text == "karasumyo2022" &&
   (txt_UserName.Text == "whatever" || txt_UserName.Text == "somethingelse" ))
// ^                                                                        ^
{
    new Form1().Show();
    this.Hide();
}