禁用winform窗体上的关闭按钮

转自：http://doncle.blog.163.com/blog/static/16281394120101111399626/

protected override CreateParams CreateParams

        {

            get

            {

                int CS_NOCLOSE = 0X200;

                CreateParams parameters = base.CreateParams;

                parameters.ClassStyle |= CS_NOCLOSE;

                return parameters;

            }

        }