diff --git a/CitySunlight.v12.suo b/CitySunlight.v12.suo
index 8c107b5..1b55759 100644
Binary files a/CitySunlight.v12.suo and b/CitySunlight.v12.suo differ
diff --git a/CitySunlight/Account/UserManager.cs b/CitySunlight/Account/UserManager.cs
index 7df65e7..72d6922 100644
--- a/CitySunlight/Account/UserManager.cs
+++ b/CitySunlight/Account/UserManager.cs
@@ -11,17 +11,30 @@ namespace CitySunlight
         private const String tbname = "tb_user";
         private static Dictionary<String, int> trytimes = new Dictionary<string, int>();
         private static SqlHelper sql = new SqlHelper("Data Source=.;Initial Catalog=myApplication;User ID=sa;Password=325325");
-
+        /// <summary>
+        /// 登录错误增加错误次数
+        /// </summary>
+        /// <param name="username">用户名</param>
+        /// <returns>错误次数</returns>
         public static int ErrLogin(String username)
         {
             return UpdateTimes(username, true);
         }
-
+        /// <summary>
+        /// 获取错误次数
+        /// </summary>
+        /// <param name="username">用户名</param>
+        /// <returns></returns>
         public static int GetTimes(String username)
         {
             return UpdateTimes(username, false);
         }
-
+        /// <summary>
+        /// 更新错误次数
+        /// </summary>
+        /// <param name="username">用户名</param>
+        /// <param name="add">是否添加</param>
+        /// <returns></returns>
         private static int UpdateTimes(String username, bool add)
         {
             if (!trytimes.ContainsKey(username))
@@ -34,7 +47,12 @@ namespace CitySunlight
             }
             return trytimes[username];
         }
-
+        /// <summary>
+        /// 用户登录
+        /// </summary>
+        /// <param name="username">用户名</param>
+        /// <param name="password">密码</param>
+        /// <returns>是否登录成功</returns>
         public static bool LoginUser(String username, String password)
         {
             DataTable dt = sql.ExecuteDataTable("select * from " + tbname + " where UserName='" + username + "' and PassWord='" + password + "'", CommandType.Text);
@@ -46,7 +64,11 @@ namespace CitySunlight
             UpdateTimes(username, true);
             return false;
         }
-
+        /// <summary>
+        /// 检查用户是否存在
+        /// </summary>
+        /// <param name="username">用户名</param>
+        /// <returns>是否存在</returns>
         public static bool isExist(String username)
         {
             DataTable dt = sql.ExecuteDataTable("select * from " + tbname + " where UserName='" + username + "'", CommandType.Text);
@@ -56,7 +78,12 @@ namespace CitySunlight
             }
             return false;
         }
-
+        /// <summary>
+        /// 注册用户
+        /// </summary>
+        /// <param name="username">用户名</param>
+        /// <param name="password">密码</param>
+        /// <returns>是否注册成功</returns>
         public static bool RegisterUser(String username, String password)
         {
             int insert = sql.ExecuteNonQuery("insert into " + tbname + "(UserName,PassWord) values('" + username + "','" + password + "')");
diff --git a/CitySunlight/CitySunlight.csproj b/CitySunlight/CitySunlight.csproj
index 26d0e4f..05323fc 100644
--- a/CitySunlight/CitySunlight.csproj
+++ b/CitySunlight/CitySunlight.csproj
@@ -69,7 +69,6 @@
     <Content Include="Admin.aspx" />
     <Content Include="Main.aspx" />
     <Content Include="Account\Register.aspx" />
-    <Content Include="Picture\1_jtb.jpg" />
     <Content Include="Picture\empty.jpg" />
     <Content Include="Picture\main.jpg" />
     <Content Include="Product\ProductClassEdit.aspx" />
@@ -147,7 +146,6 @@
       <DependentUpon>Login.aspx</DependentUpon>
     </Compile>
     <Compile Include="Properties\AssemblyInfo.cs" />
-    <Compile Include="Utils.cs" />
   </ItemGroup>
   <ItemGroup>
     <Content Include="packages.config" />
diff --git a/CitySunlight/HttpUtils.cs b/CitySunlight/HttpUtils.cs
index 69ee69b..35ee892 100644
--- a/CitySunlight/HttpUtils.cs
+++ b/CitySunlight/HttpUtils.cs
@@ -7,6 +7,11 @@ namespace CitySunlight
 {
     public static class HttpUtils
     {
+        /// <summary>
+        /// 通过标签名获取数据
+        /// </summary>
+        /// <param name="tagName">标签名称</param>
+        /// <returns>标签数据</returns>
         public static String getElementsbyName(String tagName)
         {
             if (HttpContext.Current.Request.Form[tagName] != null)
@@ -14,6 +19,11 @@ namespace CitySunlight
             else
                 return null;
         }
+        /// <summary>
+        /// 查询Get标签数据
+        /// </summary>
+        /// <param name="tagName">Get标签</param>
+        /// <returns>标签数据</returns>
         public static String getQueryString(String tagName)
         {
             if (HttpContext.Current.Request.QueryString[tagName] != null)
@@ -21,6 +31,11 @@ namespace CitySunlight
             else
                 return null;
         }
+        /// <summary>
+        /// 通过标签获取文件数据
+        /// </summary>
+        /// <param name="tagName">文件标签</param>
+        /// <returns>文件数据</returns>
         public static HttpPostedFile getFilebyName(String tagName)
         {
             HttpPostedFile file = HttpContext.Current.Request.Files[tagName];
@@ -29,18 +44,38 @@ namespace CitySunlight
             else
                 return null;
         }
+        /// <summary>
+        /// 获得1970年1月1日到现在的秒数
+        /// </summary>
+        /// <returns>1970年1月1日到现在的秒数</returns>
         public static long currentTimeMillis()
         {
             return (long)((DateTime.UtcNow - new DateTime(1970, 1, 1, 0, 0, 0, DateTimeKind.Utc)).TotalMilliseconds);
         }
+        /// <summary>
+        /// 添加Td
+        /// </summary>
+        /// <returns>Td的html代码</returns>
         public static String addTd()
         {
             return "<td></td>";
         }
+        /// <summary>
+        /// 添加Td(带内容)
+        /// </summary>
+        /// <param name="s">内容</param>
+        /// <returns>Td带内容的Html代码</returns>
         public static String addTd(String s)
         {
             return String.Format("<td align=\"center\">{0}</td>", s);
         }
+        /// <summary>
+        /// 可配置大小的Td标签
+        /// </summary>
+        /// <param name="s">内容</param>
+        /// <param name="col">宽</param>
+        /// <param name="row">高</param>
+        /// <returns></returns>
         public static String addTd(String s, int col, int row)
         {
             String td = "<td align=\"center\"";
@@ -48,6 +83,11 @@ namespace CitySunlight
             td += row != 0 ? String.Format(" rowspan=\"{0}\"", row) : "";
             return String.Format(td + " >{0}</td>", s);
         }
+        /// <summary>
+        /// String尝试转换为Int(扩展方法)
+        /// </summary>
+        /// <param name="s"></param>
+        /// <returns></returns>
         public static int ToInt(this string s)
         {
             int i;
@@ -57,6 +97,11 @@ namespace CitySunlight
             }
             return i;
         }
+        /// <summary>
+        /// String尝试转换为decimal(扩展方法)
+        /// </summary>
+        /// <param name="s"></param>
+        /// <returns></returns>
         public static decimal Todecimal(this string s)
         {
             decimal i;
diff --git a/CitySunlight/Product/ProductClassManager.cs b/CitySunlight/Product/ProductClassManager.cs
index 54e04cb..a023538 100644
--- a/CitySunlight/Product/ProductClassManager.cs
+++ b/CitySunlight/Product/ProductClassManager.cs
@@ -12,12 +12,21 @@ namespace CitySunlight
         //分类表名
         public const String tbname = "tb_proclass";
 
-        //获得分类列表默认选择第一个
+        /// <summary>
+        /// 获得分类列表的Html代码,默认选择第一个
+        /// </summary>
+        /// <param name="name">列表名</param>
+        /// <returns>分类列表的Html代码</returns>
         public static String getOptionString(String name)
         {
             return getOptionString(name, "0");
         }
-        //获得分类列表 可以配置选项
+        /// <summary>
+        /// 获得分类列表的Html代码,可配置选项(数据库部分)
+        /// </summary>
+        /// <param name="name">列表名</param>
+        /// <param name="df">列表选项</param>
+        /// <returns>分类列表的Html代码</returns>
         public static String getOptionString(String name, String df)
         {
             String html = "<select style=\"width: 120px\" Name=\"" + name + "\">";
@@ -32,7 +41,11 @@ namespace CitySunlight
             html += "</select>";
             return html;
         }
-        //获得分类名称通过ID
+        /// <summary>
+        /// 通过ID获得分类名称(数据库部分)
+        /// </summary>
+        /// <param name="Nid">分类ID</param>
+        /// <returns>分类名称</returns>
         public static String getClassName(int Nid)
         {
             DataTable dt = sql.ExecuteDataTable("select * from " + tbname + " where nid='" + Nid + "'", CommandType.Text);
@@ -41,16 +54,30 @@ namespace CitySunlight
             else
                 return "分类已被删除";
         }
-        //判断分类是否存在
+        /// <summary>
+        /// 判断分类是否存在(数据库部分)
+        /// </summary>
+        /// <param name="name">分类名称</param>
+        /// <returns>是否存在</returns>
         public static bool isExist(String name)
         {
             return sql.ExecuteDataTable("select * from " + tbname + " where ProClassName='" + name + "'", CommandType.Text).Rows.Count > 0;
         }
+        /// <summary>
+        /// 通过Id判断分类是否存在(数据库部分)
+        /// </summary>
+        /// <param name="nid">分类ID</param>
+        /// <returns>是否存在</returns>
         public static bool isExist(int nid)
         {
             return sql.ExecuteDataTable("select * from " + tbname + " where Nid='" + nid + "'", CommandType.Text).Rows.Count > 0;
         }
-        //添加分类
+        /// <summary>
+        /// 添加分类(数据库部分)
+        /// </summary>
+        /// <param name="Pid"></param>
+        /// <param name="classname"></param>
+        /// <returns>是否成功</returns>
         public static bool addclass(int Pid, String classname)
         {
             int j = sql.ExecuteNonQuery("insert into " + tbname + "(Pid,ProClassName) values('" + Pid + "','" + classname + "')", CommandType.Text);
@@ -58,7 +85,11 @@ namespace CitySunlight
                 return true;
             return false;
         }
-        //删除分类
+        /// <summary>
+        /// 删除分类(数据库部分)
+        /// </summary>
+        /// <param name="Nid"></param>
+        /// <returns>是否成功</returns>
         public static bool removeclass(int Nid)
         {
             if (Nid != 0)
@@ -69,7 +100,12 @@ namespace CitySunlight
             }
             return false;
         }
-        //修改分类
+        /// <summary>
+        /// 修改分类(数据库部分)
+        /// </summary>
+        /// <param name="Nid">分类ID</param>
+        /// <param name="cname">修改后的名称</param>
+        /// <returns>是否成功</returns>
         public static bool editclass(int Nid, String cname)
         {
             if (Nid != 0)
diff --git a/CitySunlight/Utils.cs b/CitySunlight/Utils.cs
deleted file mode 100644
index 59de9fd..0000000
--- a/CitySunlight/Utils.cs
+++ /dev/null
@@ -1,109 +0,0 @@
-using System;
-using System.Collections.Generic;
-using System.Data;
-using System.Linq;
-using System.Text;
-using System.Web;
-
-namespace CitySunlight
-{
-
-
-
-    public static class Utils
-    {
-        public static IList<ItemInfo> ToItemInfoList(this DataTable t, string pFieldValue, string pFieldText)
-        {
-            IList<ItemInfo> list = new List<ItemInfo>();
-            if (t == null)
-            {
-                return list;
-            }
-
-            foreach (DataRow row in t.Rows)
-            {
-                list.Add(ItemInfo.Create(row[pFieldValue].ToString(), row[pFieldText].ToString()));
-            }
-
-            return list;
-        }
-
-        public static string GetSelect(IList<ItemInfo> pInfolist, string pControlName, string pEditValue, string pFirstValue, string pFirstText)
-        {
-            StringBuilder sbStr = new StringBuilder();
-            sbStr.Append("<select id=\"" + pControlName + "\" name=\"" + pControlName + "\">");
-            if (pFirstText.Length > 0)
-            {
-                sbStr.Append("<option value=\"");
-                sbStr.Append(pFirstValue);
-                sbStr.Append("\"");
-
-                if (pFirstValue == pEditValue)
-                {
-                    sbStr.Append(" selected=\"selected\"");
-                }
-
-                sbStr.Append(">");
-
-                sbStr.Append(pFirstText);
-                sbStr.Append("</option>");
-            }
-
-            foreach (ItemInfo info in pInfolist)
-            {
-                sbStr.Append("<option value=\"");
-                sbStr.Append(info.id);
-                sbStr.Append("\"");
-                if (pEditValue == info.id)
-                {
-                    sbStr.Append(" selected=\"selected\"");
-                }
-                sbStr.Append(">");
-                sbStr.Append(info.name);
-                sbStr.Append("</option>");
-            }
-            sbStr.Append("<lect>");
-            return sbStr.ToString();
-        }
-    }
-    public class ItemInfo
-    {
-        public string id;
-        public string name = string.Empty;
-        public string detail;
-
-        public ItemInfo() { }
-        public ItemInfo(string pId, string pName)
-        {
-            this.id = pId;
-            this.name = pName;
-        }
-
-        public ItemInfo(string pId, string pName, string pDetail)
-        {
-            this.id = pId;
-            this.name = pName;
-            this.detail = pDetail;
-        }
-
-        public override string ToString()
-        {
-            return this.name;
-        }
-
-        public static ItemInfo Create(string pName)
-        {
-            return new ItemInfo(pName, pName, "");
-        }
-
-        public static ItemInfo Create(string pId, string pName)
-        {
-            return new ItemInfo(pId, pName, "");
-        }
-
-        public static ItemInfo Create(string pId, string pName, string pDetail)
-        {
-            return new ItemInfo(pId, pName, pDetail);
-        }
-    }
-}
\ No newline at end of file