RadioButtonList 绑定图片

（1）直接从文件夹中读取

            string dirpath = Server.MapPath("Emoticons");
            DirectoryInfo dire = new DirectoryInfo(dirpath);
            FileInfo[] file1 = dire.GetFiles("*.gif");
            foreach (FileInfo f in file1)
            {
                ListItem item1 = new ListItem("<img src='" + "Emoticons/" + f.Name + "'/>", "Emoticons/" + f.Name);
                radImageFace.Items.Add(item1);  //RadioButtonList 控件

            }
            FileInfo[] file2 = dire.GetFiles("*.jpg");
            foreach (FileInfo f in file2)
            { 
                ListItem item1 = new ListItem("<img src='" + "Emoticons/" + f.Name + "'/>", "Emoticons/" + f.Name);
                radImageFace.Items.Add(item1);
            }

（2）与数据库数据绑定

就是在绑定时设置DataValueField为一个图片就可以了，DataValueField="<img    src="Url.gif">";。    
例：在数据库的Image表中字段Url是存图片的地址。则   
   sql语句为：select    '<img    src='    +    Url    +    '>'    as    ImageUrl,ID    from    Image;   
  

            string connectionString =@"server=TENCENT-A1AB25B\OG2000;database=blogs;uid=sa;pwd=sa";
            SqlConnection connection = new SqlConnection(connectionString);
            SqlDataAdapter Adapter = new SqlDataAdapter("select    '<img    src='    +    name    +    '>' as    ImageUrl,ID      from    Image", connection);
            DataSet DS = new DataSet();
            Adapter.Fill(DS, "表名");

            radImageFace.DataSource = DS;
            radImageFace.DataTextField = "ImageUrl";
            radImageFace.DataValueField = "ID";
            radImageFace.DataBind();