System.ComponentModel.Design.HelpKeywordAttribute.IsDefaultAttribute C# (CSharp) Method

        public override bool IsDefaultAttribute()
        {
            return Equals(Default);
        }
    }

        private void UpdateHelpKeyword(bool tryLater)
        {
            IHelpService service = this.GetService(typeof(IHelpService)) as IHelpService;

            if (service == null)
            {
                if (tryLater)
                {
                    Application.Idle += new EventHandler(this.ApplicationIdle);
                }
            }
            else
            {
                if (this._contextAttributes != null)
                {
                    foreach (string str in this._contextAttributes)
                    {
                        service.RemoveContextAttribute("Keyword", str);
                    }
                    this._contextAttributes = null;
                }
                service.RemoveContextAttribute("Selection", SelectionKeywords[this._contextKeyword]);
                bool flag = false;
                if (this._selection.Count == 0)
                {
                    flag = true;
                }
                else if (this._selection.Count == 1)
                {
                    IDesignerHost host = this.GetService(typeof(IDesignerHost)) as IDesignerHost;
                    if ((host != null) && this._selection.Contains(host.RootComponent))
                    {
                        flag = true;
                    }
                }
                this._contextAttributes = new string[this._selection.Count];
                for (int i = 0; i < this._selection.Count; i++)
                {
                    object component = this._selection[i];
                    string className = TypeDescriptor.GetClassName(component);
                    HelpKeywordAttribute attribute = (HelpKeywordAttribute)TypeDescriptor.GetAttributes(component)[typeof(HelpKeywordAttribute)];
                    if ((attribute != null) && !attribute.IsDefaultAttribute())
                    {
                        className = attribute.HelpKeyword;
                    }
                    this._contextAttributes[i] = className;
                }
                HelpKeywordType keywordType = flag ? HelpKeywordType.GeneralKeyword : HelpKeywordType.F1Keyword;
                foreach (string str3 in this._contextAttributes)
                {
                    service.AddContextAttribute("Keyword", str3, keywordType);
                }
                int count = this._selection.Count;
                if ((count == 1) && flag)
                {
                    count--;
                }
                this._contextKeyword = (short)Math.Min(count, SelectionKeywords.Length - 1);
                service.AddContextAttribute("Selection", SelectionKeywords[this._contextKeyword], HelpKeywordType.FilterKeyword);
            }
        }