c# - Sizing code in a form resize event does not work -

i have problem sizing form in form size event. trying avoid situation form goes off screen when user un-maximises form , form cannot resized (as corner off screen). although can't seem reproduce situation. anyway came code out of situation should ever occur again. problem form height not set when form un-maximized, although the code in if statement reached. 1 time when running application top , left properties got corrupted , both became -32000. again came code prevent causing problem. here code, note width fixed:

public partial class mainform : form {     rectangle sr;     formwindowstate wp;     public mainform()     {             sr = system.windows.forms.screen.primaryscreen.bounds;             maximumsize = new size(width, sr.height);             wp = windowstate;     }     private void mainform_activated(object sender, eventargs e)     // positions form     {         top = properties.settings.default.top;         if ((top > sr.height - 80) || (top < 0))              top = 80;         left = properties.settings.default.left;         if ((left > sr.width - 80) || (left < 0))             left = 80;         height = properties.settings.default.height;     }     private void mainform_deactivate(object sender, eventargs e)     // remembers forms position     {         properties.settings.default.top = top;         properties.settings.default.left = left;         properties.settings.default.height = height;         properties.settings.default.save();     }     private void mainform_resize(object sender, eventargs e)     {         control control = (control)sender;         if ((windowstate == formwindowstate.normal) &&          (wp == formwindowstate.maximized) &&         (control.size.height > sr.height - 80))             // following line has no effect:              control.size = new size(control.size.width, 400);         wp = windowstate;     } 

thanks.

make sure form not in maximised state when trying apply height/width changes.

-- athar