asp.net(C#)读取文件夹和子文件夹下所有文件，绑定到GRIDVIEW并排序
Asp部分：
<%@Page Language="C#"AutoEventWireup="true"CodeBehind="MyFiles_List.aspx.cs"Inherits="lbWeb.webAdmin.MyFiles_List"%>
<!DOCTYPEhtml PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<htmlxmlns="http://www.w3.org/1999/xhtml">
<headrunat="server">
<title>无标题页</title>
<script language="javascript" type="text/javascript">
function selectAll(obj) {
var theTable = obj.parentElement.parentElement.parentElement;
var i;
var j = obj.parentElement.cellIndex;
for(i=0;i<theTable.rows.length;i++)
{
var objCheckBox = theTable.rows[i].cells[j].firstChild;
if(objCheckBox.checked!=null)objCheckBox.checked = obj.checked;
}
}
</script>
</head>
<body>
<form id="form1" runat="server">
<div>
<table width="100%">
<tr>
<td>
文件管理
</td>
</tr>
<tr>
<td>
<asp:GridViewWidth="100%" runat="server" ID="gridFileList"
AutoGenerateColumns="false"CellPadding="4" ForeColor="#333333"
GridLines="None" OnRowDataBound="gridFileList_RowDataBound"AllowPaging="True"
PageSize="6" OnPageIndexChanging="gridFileList_PageIndexChanging"
AllowSorting="True"onsorting="gridFileList_Sorting">
<Columns>
<asp:TemplateField>
<ItemStyle HorizontalAlign="Center" />
<HeaderTemplate> <inputid="CheckAll" type="checkbox" onclick="selectAll(this);"/>全选</HeaderTemplate>
<ItemTemplate>
<asp:CheckBoxrunat="server" ID="chkDel" />
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateFieldHeaderText="序号"InsertVisible="False">
<ItemStyle HorizontalAlign="Center" />
<ItemTemplate>
<asp:LabelID="Label2" runat="server" Text='<%# this.gridFileList.PageIndex * this.gridFileList.PageSize + this.gridFileList.Rows.Count + 1%>'/>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateFieldHeaderText="图片"InsertVisible="False">
<ItemStyle HorizontalAlign="Center" />
<ItemTemplate>
<asp:ImageID="ImgPath" runat="server" Width="150"Height="80" />
</ItemTemplate>
</asp:TemplateField>
<asp:BoundFieldDataField="FileName"HeaderText="名称" SortExpression="FileName">
<ItemStyle HorizontalAlign="Center" />
</asp:BoundField>
<asp:BoundFieldDataField="FileLength"HeaderText="大小"SortExpression="FileLength">
<ItemStyle HorizontalAlign="Center" />
</asp:BoundField>
<asp:BoundFieldDataField="FilePath"ShowHeader="false">
<ItemStyle HorizontalAlign="Center" />
</asp:BoundField>
<asp:BoundFieldDataField="FileLastWriteTime"HeaderText="修改时间"SortExpression="FileLastWriteTime">
<ItemStyle HorizontalAlign="Center" />
</asp:BoundField>
</Columns>
</asp:GridView>
</td>
</tr>
<tr>
<td align="center" class="sub_bg">
<asp:Buttonrunat="server" ID="btnAdd" Text="添 加"OnClick="btnAdd_Click"/>
<asp:Buttonrunat="server" ID="btnDel" Text="删 除"OnClick="btnDel_Click"OnClientClick="return confirm('提示：确定要删除吗？');"/>
</td>
</tr>
</table>
</div>
</form>
</body>
</html>
CS部分：
using System;
using System.Collections;
using System.Configuration;
using System.Data;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.IO;
using System.Text;
namespace lbWeb.webAdmin
{
public partial class MyFiles_List : System.Web.UI.Page
{
protected string File_List="";
protected void Page_Load(object sender,EventArgs e)
{
if (!IsPostBack)
{
//设定初始排序字段为文件修改时间FileLastWriteTime
gridFileList.Attributes.Add("SortExpression","FileLastWriteTime");
gridFileList.Attributes.Add("SortDirection","DESC");
BindGrid();
}
}
///<summary>
///要显示的文件扩展名
///</summary>
///<param name="type"></param>
///<returns></returns>
public bool checkFileType(string type)
{
bool FileType = false;
string[] type_ = newstring[4];
type = type.ToLower();
type_[0] =".jpg";
type_[1] =".gif";
type_[2] =".jpeg";
type_[3] =".png";
//可在此添加上传文件的后缀名
for (int i = 0; i < type_.Length; i++)
{
if (type.Contains(type_[i].ToString()))
{
FileType =true;
}
}
return FileType;
}
///<summary>
///遍文件夹下的所有子文件夹下的文件
///</summary>
///<param name="ObjDirPath">文件夹</param>
public void GetFiles(string ObjDirPath)
{
DirectoryInfo SourceDir = new DirectoryInfo(ObjDirPath);
foreach (FileSystemInfo FSIin SourceDir.GetFileSystemInfos())
{
if (FSI is DirectoryInfo)
{
//如果是文件夹则递归
GetFiles(FSI.FullName);
}
else
{
//如果是符合要求的文件则垒加集合,因为我只要求显示图片文件，在checkFileType方法里定义要显示文件的扩展名
if (checkFileType(FSI.Extension))
{
//由于是物理路径，如e:/luobing_web/uploadfiles/picture/test.jpg这种形式，需要提取虚拟路径，如：../uploadfiles/picture/test.jpg
string FilePath =""; //一步写来看起混乱，就分开写了
FilePath = FSI.FullName.ToLower();
FilePath = FilePath.Substring(FilePath.LastIndexOf("uploadfiles//"));
FilePath ="../"+FilePath.Replace("//","/");//这里在路径前加了../，因为我的项目里页面文件和上传文件夹不是同级文件夹
File_List += FilePath +",";
}
}
}
}
///<summary>
///构造DataTABLE来绑定GRIDVIEW
///</summary>
///<returns></returns>
public DataTable FileDataTable()
{
GetFiles(Server.MapPath(@"~/UploadFiles/"));
//构造DataTABLE
DataTable dt = newDataTable();
dt.Columns.Add(newDataColumn("FilePath",typeof(string)));
dt.Columns.Add(newDataColumn("FileName",typeof(string)));
dt.Columns.Add(newDataColumn("FileLength",typeof(string)));
dt.Columns.Add(newDataColumn("FileLastWriteTime",typeof(string)));
DataRow dr;
//将文件数组集合切割到数组
string[] dtaArry = File_List.Split(',');
for (int i = 0; i < dtaArry.Length; i++)
{
if (dtaArry[i].Trim() != "")//防空元素
{
dr = dt.NewRow();
dr[0] = dtaArry[i];//文件路径
dr[1] =Path.GetFileName(dtaArry[i]);//文件名
//获取文件大小
FileInfo FI = newFileInfo(Server.MapPath(@dtaArry[i]));
dr[2] =Convert.ToString(FI.Length / 1000)+"KB";//获取的是字节byte，还需要转换为千字节KB
dr[3] = FI.LastWriteTime;
dt.Rows.Add(dr);
}
}
return dt;
}
///<summary>
///绑定gridview
///</summary>
private void BindGrid()
{
//获取数据源
DataTable dtb = FileDataTable();
//排序
string SortDirection = gridFileList.Attributes["SortDirection"].ToString();
string SortExpression = gridFileList.Attributes["SortExpression"].ToString();
dtb.DefaultView.Sort =string.Format("{0} {1}", SortExpression, SortDirection);
//赋数据源并绑定
gridFileList.DataSource = dtb;
gridFileList.DataBind();
}
///<summary>
///添加
///</summary>
///<param name="sender"></param>
///<param name="e"></param>
protected void btnAdd_Click(object sender,EventArgs e)
{
Response.Redirect("MyFiles_Add.aspx");
}
///<summary>
///删除
///</summary>
///<param name="sender"></param>
///<param name="e"></param>
protected void btnDel_Click(object sender,EventArgs e)
{
try
{
FileInfo fileinfo;
bool IsSelect = false;
for (int i = 0; i < gridFileList.Rows.Count; i++)
{
GridViewRow row = gridFileList.Rows[i];
if (((CheckBox)row.FindControl("chkDel")).Checked)
{
IsSelect =true;
Image Img = (Image)gridFileList.Rows[i].Cells[0].FindControl("ImgPath");
fileinfo =new FileInfo(Request.MapPath(@Img.ImageUrl));
if (fileinfo.Exists)
{
fileinfo.Delete();
}
}
}
if (IsSelect)
{
ValueChecked.MessageBox(Page, "删除成功！");
}
else
{
ValueChecked.MessageBox(Page, "请选择要删除的行！");
}
}
catch
{
ValueChecked.MessageBox(Page, "删除失败！");
}
BindGrid();
}
///<summary>
///绑定数据行
///</summary>
///<param name="sender"></param>
///<param name="e"></param>
protectedvoid gridFileList_RowDataBound(object sender,GridViewRowEventArgs e)
{
if (e.Row.RowType == DataControlRowType.DataRow)
{
Image Img = (Image)e.Row.Cells[0].FindControl("ImgPath");
Img.ImageUrl = e.Row.Cells[5].Text;
e.Row.Cells[5].Text="";
}
}
///<summary>
///分页
///</summary>
///<param name="sender"></param>
///<param name="e"></param>
protected void gridFileList_PageIndexChanging(object sender,GridViewPageEventArgs e)
{
gridFileList.PageIndex = e.NewPageIndex;
this.BindGrid();
}
///<summary>
///排序
///</summary>
///<param name="sender"></param>
///<param name="e"></param>
protected void gridFileList_Sorting(object sender,GridViewSortEventArgs e)
{
string sortExpression = e.SortExpression.ToString();
string sortdirection = "ASC";
if (sortExpression == gridFileList.Attributes["SortExpression"])
{
sortdirection = (gridFileList.Attributes["SortDirection"].ToString() == sortdirection ? "DESC" : "ASC");
}
gridFileList.Attributes["SortExpression"] = sortExpression;
gridFileList.Attributes["SortDirection"] = sortdirection;
this.BindGrid();
}
}
}