repeater 模拟器 in winform

2012-02-08 17:27 【当耐特】阅读(2994) 评论(6) 编辑收藏举报

需求

有一个这样的需求，根据给定的数据源和html模板生成html，强大的All in one code中的代码不能满足需求，所以就有了RepeaterSimulate.

其中涉及：反射、泛型、正则表达式等基础知识。

RepeaterSimulate使用


            RepeaterSimulate r = new RepeaterSimulate();
            r.ItemTemplate = "<div>#Name#<div><div>#Age#<div>";
            List<TestModel> tm = new List<TestModel>() { 
               new TestModel(){Name="zhangsan",Age=11},
               new TestModel(){Name="lisi",Age=12},
               new TestModel(){Name="wangwu",Age=13},
               new TestModel(){Name="sunliu",Age=31}
            };
            string html = r.GenerateHTML<TestModel>(tm);
            Console.WriteLine(html);
            Console.Read();

效果如图：

RepeaterSimulate实现

模拟器中的GenerateHTML方法：

        public string GenerateHTML<T>(object obj)
        {
            StringBuilder sb = new StringBuilder();
            IEnumerable<T> enumerable = obj as IEnumerable<T>;
            MemberInfo[] myMemberInfo;
            // Get the type of 'MyClass'.
            Type myType = typeof(T);
            // Get the information related to all public member's of 'MyClass'. 
            myMemberInfo = myType.GetMembers();
            string regexText = "#\\w{1,}#";
            Match mt = Regex.Match(this.ItemTemplate, regexText);
            List<string> results = RegularHelper.GetResult(mt);
            foreach (var item in enumerable)
            {
                string tempStr = this.ItemTemplate;
                for (int i = 0; i < myMemberInfo.Length; i++)
                {
                   
                    if (myMemberInfo[i].MemberType.ToString() == "Property")
                    {
                        if (results.Contains(myMemberInfo[i].Name))
                        {
                            
                            object v = myType.InvokeMember(myMemberInfo[i].Name,
           BindingFlags.DeclaredOnly |
           BindingFlags.Public | BindingFlags.NonPublic |
           BindingFlags.Instance | BindingFlags.GetProperty, null, item, null);
                            tempStr = tempStr.Replace("#" + myMemberInfo[i].Name + "#", v.ToString());                         
                        }                     
                    }
                 
                }
                sb.Append(tempStr);
            }
            return sb.ToString();
        }

其中的#\\w{1,}#匹配对象为”#中间为字符，字符数量大于1个#”，这里约定好被绑定的数据源的属性名在两个#之间，当然也可以类似aspx<%#神马的 %>

遍历正则匹配到的属性：

    public class RegularHelper
    {
        private static List<string>  Result {get;set;}
        public static List<string> GetResult(Match mt)
        {
            List<string> r = new List<string>();
            GetMatchValues(mt,r);
            return r;
        }
        private static void GetMatchValues(Match mt, List<string> r)
        {
            r.Add(mt.Value.TrimStart('#').TrimEnd('#'));
            if (mt.NextMatch().Length > 0)
                GetMatchValues(mt.NextMatch(),r);
        }
    }