Put this around your code:
while(true)
{
// CODE
break;
}
and inside the else {}
part:
continue;
Edit:
You can also use LINQ, e. g.
while(Controls.OfType<TextBox>().All(t => !t.Visible))
if you only have those boxes whose visibility changes inside the loop.
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solved C# how do I this simple else to loop until true? [closed]