how window have taskbar calm nonetheless due bar

how i window have due bar nonetheless seem assign bar detailed text?
if set form's .text ability following .net gives due bar, i don't want.

        this.controlbox = false;
        this.formborderstyle = system.windows.forms.formborderstyle.fixeddialog;
        this.maximizebox = false;
        this.minimizebox = false;
        this.showintaskbar = true;
        this.text = "my due assign bar";

i've found biased solution, overrule createparams:

    stable overrule system.windows.forms.createparams createparams
    {
        get
        {
            system.windows.forms.createparams cp = base.createparams;
            cp.style &= ~0x00c00000; // ws_caption
            relapse cp;
        }
    }

however causes window resized have due bar, ie it's taller should be. there any good fortitude this?