asp.net C# 获取指定文件夹下所有子目录及文件(目录数与文件数)

int j = 0;
protected void button1_click(object sender, eventargs e)
{
directoryinfo dir = new directoryinfo(textbox1.text.tostring());
label1.text = getallfiles(dir).tostring();
}getallfiles方法为自定义方法，实现遍历整个文件夹文件的方法。代码如下：
public int getallfiles(directoryinfo dir)
{
filesysteminfo[] fileinfo = dir.getfilesysteminfos();
foreach (filesysteminfo i in fileinfo)
{
if (i is directoryinfo)
{
getallfiles((directoryinfo)i);
}
else
{
j++;
}
}
return j;
}
//=================================================
string[] directorys = system.io.directory.getdirectories("d:","*");
for(int i=0; i {
response.write(directorys "
");
}
response.write("统计目录：" directorys.length "个
---------
");
//=================================================
string[] files = system.io.directory.getfiles("d:","*");
for(int i=0; i {
response.write(files "
");
}
response.write("统计文件：" files.length "个
---------
");

asp教程.net:获取某目录下的所有文件(包括子目录下文件)的数量

asp.net教程 c# 获取指定文件夹下所有子目录及文件

using system;
using system.collections;
using system.collections.generic;
using system.text;
using system.web;
using system.io;
using system.data;

namespace ec
{
    ///

    /// 获取指定文件夹下所有子目录及文件
    ///

    public class getfoldlist
    {
        #region 获取指定文件夹下所有子目录及文件(树形)
        /****************************************
         * 函数名称：getfoldall(string path)
         * 功能说明：获取指定文件夹下所有子目录及文件(树形)
         * 参    数：path:详细路径
         * 调用示列：
         *           string strdirlist = server.mappath("templates");      
         *           this.literal1.text = ec.getfoldlist.getfoldall(strdirlist); 
        *****************************************/
        ///

        /// 获取指定文件夹下所有子目录及文件
        ///

        /// 详细路径
        public static string getfoldall(string path)
        {

            string str = "";
            directoryinfo thisone = new directoryinfo(path);
            str = listtreeshow(thisone, 0, str);
            return str;

        }

        ///

        /// 获取指定文件夹下所有子目录及文件函数
        ///

        /// 指定目录
        /// 默认起始值,调用时,一般为0
        /// 用于迭加的传入值,一般为空
        ///
        public static string listtreeshow(directoryinfo thedir, int nlevel, string rn)//递归目录 文件
        {
            directoryinfo[] subdirectories = thedir.getdirectories();//获得目录
            foreach (directoryinfo dirinfo in subdirectories)
            {

                if (nlevel == 0)
                {
                    rn += "├";
                }
                else
                {
                    string _s = "";
                    for (int i = 1; i <= nlevel; i++)
                    {
                        _s += "│ ";
                    }
                    rn += _s + "├";
                }
                rn += "" + dirinfo.name.tostring() + "
";
                fileinfo[] fileinfo = dirinfo.getfiles();   //目录下的文件
                foreach (fileinfo finfo in fileinfo)
                {
                    if (nlevel == 0)
                    {
                        rn += "│ ├";
                    }
                    else
                    {
                        string _f = "";
                        for (int i = 1; i <= nlevel; i++)
                        {
                            _f += "│ ";
                        }
                        rn += _f + "│ ├";
                    }
                    rn += finfo.name.tostring() + "
";
                }
                rn = listtreeshow(dirinfo, nlevel + 1, rn);

            }
            return rn;
        }

 

        /****************************************
         * 函数名称：getfoldall(string path)
         * 功能说明：获取指定文件夹下所有子目录及文件(下拉框形)
         * 参    数：path:详细路径
         * 调用示列：
         *            string strdirlist = server.mappath("templates");     
         *            this.literal2.text = ec.fileobj.getfoldall(strdirlist,"tpl","");
        *****************************************/
        ///

        /// 获取指定文件夹下所有子目录及文件(下拉框形)
        ///

        /// 详细路径
        ///下拉列表名称
        ///默认选择模板名称
        public static string getfoldall(string path, string dropname, string tplpath)
        {
            string strdrop = "--请选择详细模板--";
            string str = "";
            directoryinfo thisone = new directoryinfo(path);
            str = listtreeshow(thisone, 0, str, tplpath);
            return strdrop + str + "";

        }

        ///

        /// 获取指定文件夹下所有子目录及文件函数
        ///

        /// 指定目录
        /// 默认起始值,调用时,一般为0
        /// 用于迭加的传入值,一般为空
        /// 默认选择模板名称
        ///
        public static string listtreeshow(directoryinfo thedir, int nlevel, string rn, string tplpath)//递归目录 文件
        {
            directoryinfo[] subdirectories = thedir.getdirectories();//获得目录

            foreach (directoryinfo dirinfo in subdirectories)
            {

                rn += "                 if (tplpath.tolower() == dirinfo.name.tostring().tolower())
                {
                    rn += " selected ";
                }
                rn += ">";

                if (nlevel == 0)
                {
                    rn += "┣";
                }
                else
                {
                    string _s = "";
                    for (int i = 1; i <= nlevel; i++)
                    {
                        _s += "│ ";
                    }
                    rn += _s + "┣";
                }
                rn += "" + dirinfo.name.tostring() + "";

                fileinfo[] fileinfo = dirinfo.getfiles();   //目录下的文件
                foreach (fileinfo finfo in fileinfo)
                {

                    if (getfileextends(finfo.name.tostring()) == "htm" || getfileextends(finfo.name.tostring()) == "html" || getfileextends(finfo.name.tostring()) == "aspx")
                    {

                        rn += "                         if (tplpath.tolower() == dirinfo.name.tostring().tolower()+"/"+finfo.name.tostring().tolower())
                        {
                            rn += " selected ";
                        }
                        rn += ">";

                        if (nlevel == 0)
                        {
                            rn += "│ ├";
                        }
                        else
                        {
                            string _f = "";
                            for (int i = 1; i <= nlevel; i++)
                            {
                                _f += "│ ";
                            }
                            rn += _f + "│ ├";
                        }
                        rn += finfo.name.tostring() + "";
                    }
                }
                rn = listtreeshow(dirinfo, nlevel + 1, rn, tplpath);

            }
            return rn;
        }
        #endregion

        #region 获取指定文件夹下目录
        ///

        /// 获取指定文件夹下目录
        ///

        /// 文件夹路径
        ///
        public static datatable getfold(string path)
        {
            datatable dt = new datatable();
            datacolumn dc;
            datarow dr;

            dc = new datacolumn();
            dc.datatype = system.type.gettype("system.string");
            dc.columnname = "目录名";
            dt.columns.add(dc);

            dc = new datacolumn();
            dc.datatype = system.type.gettype("system.datetime");
            dc.columnname = "创建时间";
            dt.columns.add(dc);

            dc = new datacolumn();
            dc.datatype = system.type.gettype("system.datetime");
            dc.columnname = "修改时间";
            dt.columns.add(dc);

 

            if (!system.io.directory.exists(path))
            {
                throw new exception("不存在相应目录");
            }
            else
            {
                directoryinfo thisone = new directoryinfo(path);
                directoryinfo[] subdirectories = thisone.getdirectories();//获得目录

                foreach (directoryinfo dirinfo in subdirectories)
                {
                    dr = dt.newrow();
                    dr["目录名"] = dirinfo.name.tostring();
                    dr["创建时间"] = dirinfo.creationtime;
                    dr["修改时间"] = dirinfo.lastwritetime;

                    dt.rows.add(dr);

                }

            }
            return dt;

        }

        #endregion

        #region 获取指定目录下的文件
        ///

        ///
        ///

        ///
        ///
        ///
        public static datatable getfils(string path)
        {
            datatable dt = new datatable();
            datacolumn dc;
            datarow dr;

            dc = new datacolumn();
            dc.datatype = system.type.gettype("system.string");
            dc.columnname = "文件名";
            dt.columns.add(dc);

            dc = new datacolumn();
            dc.datatype = system.type.gettype("system.string");
            dc.columnname = "文件格式";
            dt.columns.add(dc);

            dc = new datacolumn();
            dc.datatype = system.type.gettype("system.datetime");
            dc.columnname = "创建时间";
            dt.columns.add(dc);
            dc = new datacolumn();
            dc.datatype = system.type.gettype("system.datetime");
            dc.columnname = "修改时间";
            dt.columns.add(dc);

            dc = new datacolumn();
            dc.datatype = system.type.gettype("system.string");
            dc.columnname = "所属目录";
            dt.columns.add(dc);

 

            dc = new datacolumn();
            dc.datatype = system.type.gettype("system.string");
            dc.columnname = "文件大小";
            dt.columns.add(dc);

            if (!system.io.directory.exists(path))
            {
                throw new exception("不存在相应目录");
            }
            else
            {
                directoryinfo thisone = new directoryinfo(path);
                // directoryinfo[] subdirectories = thisone.getdirectories();//获得目录
                // foreach (directoryinfo dirinfo in subdirectories)
                // {
                fileinfo[] fileinfo = thisone.getfiles();
                foreach (fileinfo finfo in fileinfo)
                {
                    dr = dt.newrow();
                    dr["文件名"] = finfo.name;
                    dr["文件格式"] = finfo.extension;
                    dr["创建时间"] = finfo.creationtime;
                    dr["修改时间"] = finfo.lastwritetime;
                    dr["所属目录"] = finfo.directoryname;
                    dr["文件大小"] = finfo.length.tostring();
                    dt.rows.add(dr);
                }
                //}

            }

            return dt;

        }

        #endregion

        #region 取得文件后缀
        /**********************************
         * 函数名称:getfileextends
         * 功能说明:取得文件后缀
         * 参    数:filename:文件名称
         * 调用示例:
         *          getremoteobj o = new getremoteobj();
         *          string url = @"http://www.baidu.com/img/logo.gif";
         *          string s = o.getfileextends(url);
         *          response.write(s);
         *          o.dispose();
         * ********************************/
        ///

        /// 取得文件后缀
        ///

        /// 文件名称
        ///
        public static string getfileextends(string filename)
        {
            string ext = null;
            if (filename.indexof(.) > 0)
            {
                string[] fs = filename.split(.);
                ext = fs[fs.length - 1];
            }
            return ext;
        }
        #endregion
    }
}