ELSE IF + do nothing c#

basically I got a rectangle and I want it to stretch only to the height between -130 and 300 on the y axis. If it reaches anywhere outside the y-axis parameters it will cap at that height and do nothing. Is this possible and please let me know if you need more information.

if y coordinate = -130 to 300 
{
    then vguage = visible;
}
else
{
    else vguage do nothing (or cap size at the Height it reaches spanning from -130(y) to 300(y));
}