本博文是让你学会读取站点某一目录的图片,掌握LINQ与泛型Dictionary<TKey,TValue>的使用。
首先准备好几张图片存在站点某一目录之下,本例中的存储图片的目录名为MsSiteImages,图片你可以从微软网站下载http://windows.microsoft.com/en-US/windows/home
我们写一个泛型数据集,将存储目录的图片信息:
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private Dictionary<int, string> GetData() { Dictionary<int, string> dic = new Dictionary<int, string>(); int i = 0; System.IO.FileInfo fi; var Images = from f in System.IO.Directory.GetFiles(Server.MapPath("MsSiteImages")) orderby f descending select f; foreach (var filename in Images) { fi = new System.IO.FileInfo(filename); dic.Add(i, "<img src='" + "MsSiteImages/" + fi.Name + "' alt='" + fi.Name + "' title='" + fi.Name + "'/>"); i++; } return dic; }
创建一个网页,并拉RadioButtonList控件进入网页:
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<asp:RadioButtonList ID="RadioButtonList1" runat="server"></asp:RadioButtonList>
写一个方法,用来绑定数据给RadioButtonList控件,其中一个绑定类别,你可以从下面地址下载:http://www.cnblogs.com/insus/archive/2013/01/28/2880618.html ,解压之后,把InsusListControlUtility.dll放入站点的BIN目录中。
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private void Data_Binding() { Insus.NET.InsusListControlUtility objList = new Insus.NET.InsusListControlUtility(); objList.RadioButtonListParse(this.RadioButtonList1, GetData(), "value", "key"); }
在网页的Page_Load中,引用上面的Data_Binding()方法:
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protected void Page_Load(object sender, EventArgs e) { if (!IsPostBack) Data_Binding(); }
运行网页的效果: