c#分页显示图片 c#分页显示服务器上指定目录下的全部图片示例

时间:2021-03-19 人气:0

想了解c#分页显示服务器上指定目录下的全部图片示例的相关内容吗，在本文为您仔细讲解c#分页显示图片的相关知识和一些Code实例，欢迎阅读和指正，我们先划重点：c#分页,图片，下面大家一起来学习吧。

c#分页显示服务器上指定目录下的所有图片

<%@ Page Language="C#" EnableViewState="false" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<script runat="server">

String folder = "~/";// 网站根目录下的所有图像
protected void Page_Load(object sender, EventArgs e)
{

    //总页数
    int TotalPages = 0;
    //每页显示的数量
    int pageItem = 4;
    //当前页号
    int pageIndex = Convert.ToInt32(Request.QueryString["page"]);
    if (pageIndex == 0) pageIndex = 1;

System.IO.DirectoryInfo d = new System.IO.DirectoryInfo(Server.MapPath(folder));
System.IO.FileInfo[] fs = d.GetFiles("*.*").Where(file => file.Name.ToLower().EndsWith(".jpg") || file.Name.ToLower().EndsWith(".gif") || file.Name.ToLower().EndsWith(".bmp") || file.Name.ToLower().EndsWith(".png")).ToArray();

    if (fs.Length % pageItem == 0) TotalPages = fs.Length / pageItem;
    else
    {
      TotalPages = (int)Math.Ceiling((decimal)fs.Length / (decimal)pageItem);
    }
    if (pageIndex > TotalPages) pageIndex = TotalPages;

    System.IO.FileInfo[] fs2 = new System.IO.FileInfo[pageItem];
    int leftCount = pageItem;
    if (fs.Length - ((pageIndex - 1) * pageItem) < pageItem)
    {
      leftCount = fs.Length - (pageIndex - 1) * pageItem;
    }
    Array.Copy(fs, (pageIndex - 1) * pageItem, fs2, 0, leftCount);
    DataList1.DataSource = fs2;
    DataList1.DataBind();
    PrePage.NavigateUrl = Request.FilePath + "?page=" + (pageIndex - 1);
    NextPage.NavigateUrl = Request.FilePath + "?page=" + (pageIndex + 1);
    Label1.Text = fs.Length + "张图片共" + TotalPages + "页第" + pageIndex + "页";
}
</script>
<html xmlns="http://www.w3.org/1999/xhtml">
<body>
<form runat="server">
<asp:DataList ID="DataList1" runat="server" RepeatColumns="2" Border="1">
    <ItemTemplate>
      <img src='<%#Page.ResolveUrl(folder + Eval("Name"))%>' width="200" height="200" />
    </ItemTemplate>
    <AlternatingItemTemplate>
      <img src='<%#Page.ResolveUrl(folder + Eval("Name"))%>' width="200" height="200" />
    </AlternatingItemTemplate>
</asp:DataList>
<asp:HyperLink ID="PrePage" runat="server">上一页</asp:HyperLink>
<asp:HyperLink ID="NextPage" runat="server">下一页</asp:HyperLink>
<asp:Label ID="Label1" runat="server" Text=""></asp:Label>
</form>
</body>
</html>

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