上传图片的问题 最好有源代码 需求是这样的:客户端浏览打开文件后,可以预览该图片。然后需要把该图片上传到服务器。怎么做?下次查询的时候,可以查到 解决方案 » 免费领取超大流量手机卡,每月29元包185G流量+100分钟通话, 中国电信官方发货 在FileUpload里显示图片在image再点击按钮上传到服务器.查询时遍历图片文件,在页面显示图片可看看freetextbox的上传图片 public static string UploadPicFile(System.Web.UI.WebControls.FileUpload fileUpload, string pathDir, string firstMark, int maxSize) { string fileName = ""; string retValue = ""; try { bool allowType = System.Configuration.ConfigurationSettings.AppSettings["UpImageType"].Contains(fileUpload.PostedFile.ContentType.ToString()); string localExp = fileUpload.PostedFile.ContentType.ToString().Substring(fileUpload.PostedFile.ContentType.ToString().LastIndexOf("/") + 1); if (allowType) { if ((fileUpload.PostedFile.ContentLength / 1024) > maxSize) { retValue = "error:sorry your uploaded file size is larger than" + maxSize.ToString() + "KB"; } else { string expStr = fileUpload.PostedFile.FileName.Substring(fileUpload.PostedFile.FileName.LastIndexOf('.'));//后缀名 Random rd = new Random(); fileName = firstMark + DateTime.Now.Year.ToString() + DateTime.Now.Month.ToString() + DateTime.Now.Day.ToString() + "_" + rd.Next().ToString() + expStr;//新文件名 string path = HttpContext.Current.Server.MapPath("~/" + pathDir);//保存路径 fileUpload.SaveAs(string.Concat(path, "\\", fileName)); retValue = pathDir + "/" + fileName; } } else { retValue = "error:Sorry can not support your file's type:" + localExp; } } catch (Exception ex) { throw new Exception(ex.Message); } return retValue; }我的博客 程序员日记 http://www.ideaext.com 欢迎交流 我这里是c/s模式的··这个System.Web.UI.WebControls.FileUpload fileUpload是用不上了。 有点深奥。慢慢学习把。努力ING 注意:要开启虚拟目录的“写入”权限,要不然就报 403 错误工作中用到winform上传文件(-_-!,很少用winform,搞了半天)碰到一点问题,解决如下1、501 为实现错误解决方法:先把IISWEB服务扩展中的WebDev打开然后IIS站点添加MIME txt类型 常见的MIME类型如下超文本标记语言文本 .html,.html text/html 普通文本 .txt text/plain RTF文本 .rtf application/rtf GIF图形 .gif image/gif JPEG图形 .ipeg,.jpg image/jpeg au声音文件 .au audio/basic MIDI音乐文件 mid,.midi audio/midi,audio/x-midi RealAudio音乐文件 .ra, .ram audio/x-pn-realaudio MPEG文件 .mpg,.mpeg video/mpeg AVI文件 .avi video/x-msvideo GZIP文件 .gz application/x-gzip TAR文件 .tar application/x-tar 再然后设置目标文件夹的可写性 using System; using System.Collections.Generic; using System.Text; using System.Net; using System.IO; namespace Common { /// <summary> /// winform形式的文件传输类 /// </summary> public class WinFileTransporter { /// <summary> /// WebClient上传文件至服务器,默认不自动改名 /// </summary> /// <param name="fileNamePath">文件名,全路径格式</param> /// <param name="uriString">服务器文件夹路径</param> public void UpLoadFile(string fileNamePath, string uriString) { UpLoadFile(fileNamePath, uriString, false); } /// <summary> /// WebClient上传文件至服务器 /// </summary> /// <param name="fileNamePath">文件名,全路径格式</param> /// <param name="uriString">服务器文件夹路径</param> /// <param name="IsAutoRename">是否自动按照时间重命名</param> public void UpLoadFile(string fileNamePath, string uriString, bool IsAutoRename) { string fileName = fileNamePath.Substring(fileNamePath.LastIndexOf("\\") + 1); string NewFileName = fileName; if (IsAutoRename) { NewFileName = DateTime.Now.ToString("yyMMddhhmmss") + DateTime.Now.Millisecond.ToString() + fileNamePath.Substring(fileNamePath.LastIndexOf(".")); } string fileNameExt = fileName.Substring(fileName.LastIndexOf(".") + 1); if (uriString.EndsWith("/") == false) uriString = uriString + "/"; uriString = uriString + NewFileName; Utility.LogWriter log = new Utility.LogWriter(); //log.AddLog(uriString, "Log"); //log.AddLog(fileNamePath, "Log"); /**/ /// 创建WebClient实例 WebClient myWebClient = new WebClient(); myWebClient.Credentials = CredentialCache.DefaultCredentials; // 要上传的文件 FileStream fs = new FileStream(fileNamePath, FileMode.Open, FileAccess.Read); //FileStream fs = OpenFile(); BinaryReader r = new BinaryReader(fs); byte[] postArray = r.ReadBytes((int)fs.Length); Stream postStream = myWebClient.OpenWrite(uriString, "PUT"); try { //使用UploadFile方法可以用下面的格式 //myWebClient.UploadFile(uriString,"PUT",fileNamePath); if (postStream.CanWrite) { postStream.Write(postArray, 0, postArray.Length); postStream.Close(); fs.Dispose(); log.AddLog("上传日志文件成功!", "Log"); } else { postStream.Close(); fs.Dispose(); log.AddLog("上传日志文件失败,文件不可写!", "Log"); } } catch (Exception err) { postStream.Close(); fs.Dispose(); //Utility.LogWriter log = new Utility.LogWriter(); log.AddLog(err, "上传日志文件异常!", "Log"); throw err; } finally { postStream.Close(); fs.Dispose(); } } 关于C#中,数据库数据的删除操作 求一个加载ini文件的框架代码 求助 一个小白问题,会的请帮帮..谢谢 动态创建的控件怎么能使它一直存在? 怎样把内存中创建的bmp分割成两个bmp???? 就20分了,向大家请教一个问题,江湖救急阿 C#FORM中创建button问题 同一个解决方案中路径问题 谁有.dll的反编译软件? 急!!为什么从某些客户机访问服务器的Web程序时经常出现"运行时错误"! c#多个panel切换的问题 安装时,怎么做个自动检查netfram2.0安装了没有??
可看看freetextbox的上传图片
{
string fileName = "";
string retValue = "";
try
{
bool allowType = System.Configuration.ConfigurationSettings.AppSettings["UpImageType"].Contains(fileUpload.PostedFile.ContentType.ToString());
string localExp = fileUpload.PostedFile.ContentType.ToString().Substring(fileUpload.PostedFile.ContentType.ToString().LastIndexOf("/") + 1);
if (allowType)
{
if ((fileUpload.PostedFile.ContentLength / 1024) > maxSize)
{
retValue = "error:sorry your uploaded file size is larger than" + maxSize.ToString() + "KB";
}
else
{
string expStr = fileUpload.PostedFile.FileName.Substring(fileUpload.PostedFile.FileName.LastIndexOf('.'));//后缀名
Random rd = new Random();
fileName = firstMark + DateTime.Now.Year.ToString() + DateTime.Now.Month.ToString() + DateTime.Now.Day.ToString() + "_" + rd.Next().ToString() + expStr;//新文件名
string path = HttpContext.Current.Server.MapPath("~/" + pathDir);//保存路径
fileUpload.SaveAs(string.Concat(path, "\\", fileName));
retValue = pathDir + "/" + fileName;
}
}
else
{
retValue = "error:Sorry can not support your file's type:" + localExp;
}
}
catch (Exception ex)
{
throw new Exception(ex.Message);
}
return retValue;
}我的博客 程序员日记 http://www.ideaext.com 欢迎交流
工作中用到winform上传文件(-_-!,很少用winform,搞了半天)
碰到一点问题,解决如下
1、501 为实现错误
解决方法:
先把IISWEB服务扩展中的WebDev打开
然后
IIS站点添加MIME txt类型 常见的MIME类型如下
超文本标记语言文本 .html,.html text/html
普通文本 .txt text/plain
RTF文本 .rtf application/rtf
GIF图形 .gif image/gif
JPEG图形 .ipeg,.jpg image/jpeg
au声音文件 .au audio/basic
MIDI音乐文件 mid,.midi audio/midi,audio/x-midi
RealAudio音乐文件 .ra, .ram audio/x-pn-realaudio
MPEG文件 .mpg,.mpeg video/mpeg
AVI文件 .avi video/x-msvideo
GZIP文件 .gz application/x-gzip
TAR文件 .tar application/x-tar
再然后
设置目标文件夹的可写性
using System;
using System.Collections.Generic;
using System.Text;
using System.Net;
using System.IO;
namespace Common
{
/// <summary>
/// winform形式的文件传输类
/// </summary>
public class WinFileTransporter
{
/// <summary>
/// WebClient上传文件至服务器,默认不自动改名
/// </summary>
/// <param name="fileNamePath">文件名,全路径格式</param>
/// <param name="uriString">服务器文件夹路径</param>
public void UpLoadFile(string fileNamePath, string uriString)
{
UpLoadFile(fileNamePath, uriString, false);
}
/// <summary>
/// WebClient上传文件至服务器
/// </summary>
/// <param name="fileNamePath">文件名,全路径格式</param>
/// <param name="uriString">服务器文件夹路径</param>
/// <param name="IsAutoRename">是否自动按照时间重命名</param>
public void UpLoadFile(string fileNamePath, string uriString, bool IsAutoRename)
{
string fileName = fileNamePath.Substring(fileNamePath.LastIndexOf("\\") + 1);
string NewFileName = fileName;
if (IsAutoRename)
{
NewFileName = DateTime.Now.ToString("yyMMddhhmmss") + DateTime.Now.Millisecond.ToString() + fileNamePath.Substring(fileNamePath.LastIndexOf("."));
}
string fileNameExt = fileName.Substring(fileName.LastIndexOf(".") + 1);
if (uriString.EndsWith("/") == false) uriString = uriString + "/";
uriString = uriString + NewFileName;
Utility.LogWriter log = new Utility.LogWriter();
//log.AddLog(uriString, "Log");
//log.AddLog(fileNamePath, "Log");
/**/
/// 创建WebClient实例
WebClient myWebClient = new WebClient();
myWebClient.Credentials = CredentialCache.DefaultCredentials;
// 要上传的文件
FileStream fs = new FileStream(fileNamePath, FileMode.Open, FileAccess.Read);
//FileStream fs = OpenFile();
BinaryReader r = new BinaryReader(fs);
byte[] postArray = r.ReadBytes((int)fs.Length);
Stream postStream = myWebClient.OpenWrite(uriString, "PUT");
try
{
//使用UploadFile方法可以用下面的格式
//myWebClient.UploadFile(uriString,"PUT",fileNamePath);
if (postStream.CanWrite)
{
postStream.Write(postArray, 0, postArray.Length);
postStream.Close();
fs.Dispose();
log.AddLog("上传日志文件成功!", "Log");
}
else
{
postStream.Close();
fs.Dispose();
log.AddLog("上传日志文件失败,文件不可写!", "Log");
}
}
catch (Exception err)
{
postStream.Close();
fs.Dispose();
//Utility.LogWriter log = new Utility.LogWriter();
log.AddLog(err, "上传日志文件异常!", "Log");
throw err;
}
finally
{
postStream.Close();
fs.Dispose();
}
}