c#文件 IO类基本操作
标签：string tac saveas creat ali ISE mode txt context
using System;
using System.Web;
using System.Web.UI;
using System.IO;
using System.Threading;
namespace HuoLi.Common
{
///
/// file 的摘要说明。
///
public class MyFile
{
public MyFile()
{
//
// TODO: 在此处添加构造函数逻辑
//
}
public static string UpExcel(string SaveFolder, System.Web.UI.WebControls.FileUpload upControl)
{
string fileName = string.Empty;
//if (!string.IsNullOrEmpty(upControl.PostedFile.FileName))
//{
fileName = System.IO.Path.GetFileName(upControl.PostedFile.FileName);
string ext = fileName.Substring(fileName.LastIndexOf(‘.‘) + 1).ToLower();
if (ext != "xml")
{
return string.Empty;
}
else
{
string ss = System.DateTime.Now.Month.ToString() + System.DateTime.Now.Day.ToString() + System.DateTime.Now.Year.ToString() + "-" + System.DateTime.Now.Hour.ToString() + "-" + System.DateTime.Now.Minute.ToString() + "-" + System.DateTime.Now.Second.ToString() + "-" + System.DateTime.Now.Millisecond.ToString();
fileName = ss + "." + ext;
CreateFolder(SaveFolder);
string saveP = HttpContext.Current.Request.PhysicalApplicationPath + SaveFolder + fileName;
DelImgFileByPhy(saveP);
upControl.PostedFile.SaveAs(saveP);
return fileName;
}
//}
}
public static string UpImgFile(string SaveFolder, long MaxSize, System.Web.UI.WebControls.FileUpload upControl)
{
string fileName = string.Empty;
//if (!string.IsNullOrEmpty(upControl.PostedFile.FileName))
//{
fileName = System.IO.Path.GetFileName(upControl.PostedFile.FileName);
string ext = fileName.Substring(fileName.LastIndexOf(‘.‘) + 1).ToLower();
if (ext != "jpg" && ext != "jpeg" && ext != "gif" && ext != "png" && ext != "swf")
{
return string.Empty;
}
else
{
if (upControl.FileBytes.Length MaxSize)
{
//Guid.NewGuid().ToString("N")
fileName = GetDateFileName() + "." + ext;
CreateFolder(SaveFolder);
string saveP = System.Web.HttpContext.Current.Server.MapPath(SaveFolder) + fileName;
DelImgFileByPhy(saveP);
upControl.PostedFile.SaveAs(saveP);
return fileName;
}
}
return string.Empty;
//}
}
public static string UserUpImgFile(string SaveFolder, long MaxSize, System.Web.UI.WebControls.FileUpload upControl)
{
string fileName = string.Empty;
//if (!string.IsNullOrEmpty(upControl.PostedFile.FileName))
//{
fileName = System.IO.Path.GetFileName(upControl.PostedFile.FileName);
string ext = fileName.Substring(fileName.LastIndexOf(‘.‘) + 1).ToLower();
if (ext != "jpg" && ext != "jpeg" && ext != "gif" && ext != "png")
{
return string.Empty;
}
else
{
if (upControl.FileBytes.Length MaxSize)
{
//Guid.NewGuid().ToString("N")
fileName = GetDateFileName() + "." + ext;
CreateFolder(SaveFolder);
string saveP = System.Web.HttpContext.Current.Server.MapPath(SaveFolder) + fileName;
DelImgFileByPhy(saveP);
upControl.PostedFile.SaveAs(saveP);
return fileName;
}
}
return string.Empty;
//}
}
public static string UpFile(string SaveFolder, System.Web.UI.HtmlControls.HtmlInputFile upControl)
{
string fileName = string.Empty;
//if (!string.IsNullOrEmpty(upControl.PostedFile.FileName))
//{
fileName = System.IO.Path.GetFileName(upControl.PostedFile.FileName);
string ext = fileName.Substring(fileName.LastIndexOf(‘.‘) + 1).ToLower();
if (ext != "jpg" && ext != "jpeg" && ext != "gif")
{
return string.Empty;
}
else
{
fileName = System.Guid.NewGuid().ToString("n") + "." + ext;
CreateFolder(SaveFolder);
string saveP = HttpContext.Current.Request.PhysicalApplicationPath + SaveFolder + fileName;
DelImgFileByPhy(saveP);
upControl.PostedFile.SaveAs(saveP);
return fileName;
}
//}
}
public static string UpFile(string SaveFolder, System.Web.UI.WebControls.FileUpload upControl)
{
string fileName = string.Empty;
//if (!string.IsNullOrEmpty(upControl.PostedFile.FileName))
//{
fileName = System.IO.Path.GetFileName(upControl.PostedFile.FileName);
string ext = fileName.Substring(fileName.LastIndexOf(‘.‘) + 1).ToLower();
if (ext != "jpg" && ext != "jpeg" && ext != "gif")
{
return string.Empty;
}
else
{
fileName = System.Guid.NewGuid().ToString("n") + "." + ext;
CreateFolder(SaveFolder);
string saveP = HttpContext.Current.Request.PhysicalApplicationPath + SaveFolder + fileName;
DelImgFileByPhy(saveP);
upControl.PostedFile.SaveAs(saveP);
return fileName;
}
//}
}
public static string UpPdfFile(string SaveFolder, System.Web.UI.WebControls.FileUpload upControl)
{
string fileName = string.Empty;
//if (!string.IsNullOrEmpty(upControl.PostedFile.FileName))
//{
fileName = System.IO.Path.GetFileName(upControl.PostedFile.FileName);
string ext = fileName.Substring(fileName.LastIndexOf(‘.‘) + 1).ToLower();
if (ext != "txt" && ext != "pdf" && ext != "zip" && ext != "doc" && ext != "jpg" && ext != "jpeg" && ext != "gif")
{
return string.Empty;
}
else
{
fileName = fileName.Substring(0,fileName.LastIndexOf(‘.‘))+GetDateFileName() + "." + ext;
CreateFolder(SaveFolder);
string saveP = HttpContext.Current.Request.PhysicalApplicationPath + SaveFolder + fileName;
DelImgFileByPhy(saveP);
upControl.PostedFile.SaveAs(saveP);
return fileName;
}
//}
}
public static string UpPdfFile(string SaveFolder, HttpPostedFile upControl)
{
string fileName = string.Empty;
//if (!string.IsNullOrEmpty(upControl.PostedFile.FileName))
//{
fileName = System.IO.Path.GetFileName(upControl.FileName);
string ext = fileName.Substring(fileName.LastIndexOf(‘.‘) + 1).ToLower();
fileName = fileName.Substring(0,fileName.LastIndexOf(‘.‘))+GetDateFileName() + "." + ext;
CreateFolder(SaveFolder);
string saveP = HttpContext.Current.Request.PhysicalApplicationPath + SaveFolder + fileName;
DelImgFileByPhy(saveP);
upControl.SaveAs(saveP);
return fileName;
//}
}
public static string GetDateFileName()
{
return DateTime.Now.ToString("yyMMddHHmmssff");
// return System.DateTime.Now.Year.ToString() + System.DateTime.Now.Month.ToString() + System.DateTime.Now.Day.ToString() + System.DateTime.Now.Millisecond.ToString();
}
//创建文件夹
public static void CreateFolder(string path)
{
string smFolder = System.Web.HttpContext.Current.Server.MapPath(path);
if (!System.IO.Directory.Exists(smFolder))
{
System.IO.Directory.CreateDirectory(smFolder);
}
}
//获取物理路径
public static string GetMapPath(string path)
{
return System.Web.HttpContext.Current.Server.MapPath(path);
}
//文件存在性
public static bool ExsitFile(string path)
{
return System.IO.File.Exists(System.Web.HttpContext.Current.Server.MapPath(path));
}
//删除文件
public static void DelImgFileByPhy(string PhyFilePath)
{
try
{
if (System.IO.File.Exists(PhyFilePath))
{
System.IO.File.Delete(PhyFilePath);
}
}
catch
{
// throw ee;
}
}
//删除文件
public static void DelFile(Object fileSort)
{
if (fileSort != null)
{
string filepath = fileSort.ToString();
try
{
if (System.IO.File.Exists(System.Web.HttpContext.Current.Server.MapPath(filepath)))
{
System.IO.File.Delete(System.Web.HttpContext.Current.Server.MapPath(filepath));
}
}
catch
{
// throw ee;
}
}
}
/*
* 输入参数
* _Request: Page.Request 对象
* _Response: Page.Response 对象
* _fileName: 下载文件名
* _fullPath: 带文件名下载路径
* _speed 每秒允许下载的字节数
* 返回是否成功
* 调用例
Page.Response.Clear();
bool success = ResponseFile(Page.Request, Page.Response, "filename", @"C:\download.date", 1024000);
if(!success)
Response.Write("下载文件出错！");
Page.Response.End();
*/
public static bool DownFile(HttpRequest _Request, HttpResponse _Response, string _fileName, string _fullPath, long _speed)
{
try
{
FileStream myFile = new FileStream(_fullPath, FileMode.Open, FileAccess.Read, FileShare.ReadWrite);
BinaryReader br = new BinaryReader(myFile);
#region try2
try
{
_Response.AddHeader("Accept-Ranges", "bytes");
_Response.Buffer = false;
long fileLength = myFile.Length;
long startBytes = 0;
int pack = 10240; //10K bytes
//int sleep = 200; //每秒5次 即5*10K bytes每秒
double v1 = 1000 * pack / _speed;
int sleep = (int)Math.Floor(v1) + 1;
if (_Request.Headers["Range"] != null)
{
_Response.StatusCode = 206;
string[] range = _Request.Headers["Range"].Split(new char[] { ‘=‘, ‘-‘ });
startBytes = Convert.ToInt64(range[1]);
}
_Response.AddHeader("Content-Length", (fileLength - startBytes).ToString());
if (startBytes != 0)
{
_Response.AddHeader("Content-Range", string.Format(" bytes {0}-{1}/{2}", startBytes, fileLength - 1, fileLength));
}
_Response.AddHeader("Connection", "Keep-Alive");
_Response.ContentType = "application/octet-stream";
_Response.AddHeader("Content-Disposition", "attachment;filename=" + HttpUtility.UrlEncode(_fileName, System.Text.Encoding.UTF8));
br.BaseStream.Seek(startBytes, SeekOrigin.Begin);
double v2 = (fileLength - startBytes) / pack;
int maxCount = (int)Math.Floor(v2) + 1;
for (int i = 0; i )
{
if (_Response.IsClientConnected)
{
_Response.BinaryWrite(br.ReadBytes(pack));
System.Threading.Thread.Sleep(sleep);
}
else
{
i = maxCount;
}
}
}
catch
{
return false;
}
finally
{
br.Close();
myFile.Close();
}
#endregion
}
catch
{
return false;
}
return true;
}
public static void DownLoadFile(string fileName, HttpResponse Response, HttpServerUtility Server)
{
string filePath = Server.MapPath(fileName);
if (File.Exists(filePath))
{
FileInfo file = new FileInfo(filePath);
Response.ContentEncoding = System.Text.Encoding.GetEncoding("UTF-8"); //解决中文乱码
Response.AddHeader("Content-Disposition", "attachment; filename=" + Server.UrlEncode(file.Name)); //解决中文文件名乱码
Response.AddHeader("Content-length", file.Length.ToString());
Response.ContentType = "appliction/octet-stream";
Response.WriteFile(file.FullName);
Response.End();
}
}
}
}
c#文件 IO类基本操作
标签：string tac saveas creat ali ISE mode txt context
原文地址：https://www.cnblogs.com/zengxh/p/12390687.html
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