private void lblMian_Click(object sender, EventArgs e)
        {
            mainfrorm fr = new mainfrorm(this);

            formChange(fr);
            labelClicked  = true;
            labelSelected = "lblmain";
            newColor((Label)sender);
            oldColor(lblPatient);
            oldColor(lblStaff);
            oldColor(lblappointment);
            oldColor(lblProfessio);
            oldColor(lblSpecilization);
            oldColor(lblsettings);
            oldColor(lblmedicines);
            oldColor(lblusers);
            oldColor(lblout);
        }
        private void btnback_Click(object sender, EventArgs e)
        {
            mainfrorm fr = new mainfrorm(this.fr);

            formChange(fr);
        }