定义社区节点

				using System;
				using System.Collections.Generic;
				using System.Text;
				
				
				namespace feiyun0112.cnblogs.com.CSDNReader.Model
				{
				    class Font
				    {
				        private System.Drawing.Font _NoReadFont;
						private System.Drawing.Font _ReadAgainFont;
				        private System.Drawing.Font _ReadedFont;
				        private System.Drawing.Font _NormalFont;
				        private System.Drawing.Font _RepliedFont;
				        private System.Drawing.Font _ReadedRepliedFont;
						private string _name;
						private float _size;
						private  System.Drawing.FontStyle _style;
				
				        public Font()
						{
							this._name = "Arial";
							this._size = 8f;
				            this._style = System.Drawing.FontStyle.Regular;
						}
				
						public System.Drawing.Font NoRead
						{
							get
							{
								if (this._NoReadFont == null)
								{
									System.Drawing.Font font1 = this.Normal ;
				                    if (this.Normal.FontFamily.IsStyleAvailable(System.Drawing.FontStyle.Bold))
									{
				                        this._NoReadFont = new System.Drawing.Font(font1, font1.Style | System.Drawing.FontStyle.Bold);
									}
									else
									{
										this._NoReadFont = this.Normal;
									}
								}
								return this._NoReadFont;
							}
						}
						public System.Drawing.Font ReadAgain
						{
							get
							{
								if (this._ReadAgainFont == null)
								{
				                    System.Drawing.Font font1 = this.Normal;
				                    if (this.Normal.FontFamily.IsStyleAvailable(System.Drawing.FontStyle.Bold))
									{
				                        this._ReadAgainFont = new System.Drawing.Font(font1, font1.Style | System.Drawing.FontStyle.Bold | System.Drawing.FontStyle.Italic);
									}
									else
									{
										this._ReadAgainFont = this.Normal;
									}
								}
								return this._ReadAgainFont;
							}
						}
				
				        public System.Drawing.Font Replied
				        {
				            get
				            {
				                if (this._RepliedFont == null)
				                {
				                    System.Drawing.Font font1 = this.Normal;
				                    if (this.Normal.FontFamily.IsStyleAvailable(System.Drawing.FontStyle.Bold))
				                    {
				                        this._RepliedFont = new System.Drawing.Font(font1, font1.Style | System.Drawing.FontStyle.Bold | System.Drawing.FontStyle.Strikeout);
				                    }
				                    else
				                    {
				                        this._RepliedFont = this.Normal;
				                    }
				                }
				                return this._RepliedFont;
				            }
				        }
				
				        public System.Drawing.Font ReadedReplied
				        {
				            get
				            {
				                if (this._ReadedRepliedFont == null)
				                {
				                    System.Drawing.Font font1 = this.Normal;
				                    if (this.Normal.FontFamily.IsStyleAvailable(System.Drawing.FontStyle.Bold))
				                    {
				                        this._ReadedRepliedFont = new System.Drawing.Font(font1, font1.Style |  System.Drawing.FontStyle.Strikeout);
				                    }
				                    else
				                    {
				                        this._ReadedRepliedFont = this.Normal;
				                    }
				                }
				                return this._ReadedRepliedFont;
				            }
				        }
				
				        public System.Drawing.Font Readed
				        {
				            get
				            {
				                if (this._ReadedFont == null)
				                {
				                    //System.Drawing.Font font1 = this.Normal;
				                   
				                    this._ReadedFont = this.Normal;
				                   
				                }
				                return this._ReadedFont;
				            }
				        }
				
				        public System.Drawing.Font Normal
						{
							get
							{
								if (this._NormalFont == null)
								{
									this._NormalFont = new System.Drawing.Font(this._name, this._size, this._style);
								}
								return this._NormalFont;
							}
				            //set
				            //{
				            //    this._NormalFont = value;
				            //    this._NoReadFont = null;
				            //    this._ReadAgainFont = null;
				            //    this._name = this._NormalFont.Name;
				            //    this._size = this._NormalFont.Size;
				            //    this._style = this._NormalFont.Style;
				            //}
						}
				    }
				}