C#上传文件处理

  1  public class FileHelp : System.Web.UI.Page
  2     {
  3 
  4         /// <summary>
  5         /// 保存文件
  6         /// 返回：数组：status[0]:文件名称；status[1]:文件后缀名；status[2]:文件绝对URL；status[3]:文件相对URL；
  7         /// </summary>
  8         /// <param name="floder"></param>
  9         /// <param name="file"></param>
 10         /// <returns>数组：status[0]:文件名称；status[1]:文件后缀名；status[2]:文件URL</returns>
 11         public static string[] SaveFile(FileBase.FileFloder floder, HttpPostedFile file)
 12         {
 13             try
 14             {
 15                 string[] status = { "", "", "", "" };
 16 
 17                 String Tpath = "/" + floder + "/" + DateTime.Now.ToString("yyyy-MM-dd") + "/";
 18                 string docName = file.FileName;
 19                 string dufix = Path.GetExtension(docName);
 20                 string FileName = DateTime.Now.ToString("yyyyMMddHHmmssfff") + "-" + System.Guid.NewGuid().ToString();
 21                 status[0] = FileName + dufix;
 22                 status[1] = dufix;
 23                 string FilePath = FileBase.fileBasePath + Tpath;
 24                 DirectoryInfo di = new DirectoryInfo(FilePath);
 25                 if (!di.Exists) { di.Create(); }
 26 
 27                 file.SaveAs(FilePath + FileName + dufix);
 28 
 29                 status[2] = (FilePath + FileName + dufix).Replace("\", "/");
 30                 status[3] = (Tpath + FileName + dufix).Replace("\", "/");
 31 
 32                 return status;
 33             }
 34             catch (Exception ex)
 35             {
 36                 throw ex;
 37             }
 38         }
 39 
 40         /// <summary>
 41         /// 保存文件
 42         /// 返回：数组：files[0]:文件夹位置；files[1]:文件名；files[2]:文件所在位置；
 43         /// </summary>
 44         /// <param name="floder"></param>
 45         /// <param name="tempId"></param>
 46         /// <param name="file"></param>
 47         /// <returns>数组：files[0]:文件夹位置；files[1]:文件名；files[2]:文件所在位置</returns>
 48         public static string[] SaveFile(string filepath, HttpPostedFile file)
 49         {
 50             try
 51             {
 52                 string[] files = { "", "", "" };
 53 
 54                 String Tpath = "/" + filepath + "/";
 55                 string docName = file.FileName;
 56                 string dufix = Path.GetExtension(docName);
 57                 string FileName = docName;
 58                 string FilePath = FileBase.fileBasePath + Tpath;
 59                 files[0] = FilePath;
 60                 DirectoryInfo di = new DirectoryInfo(FilePath);
 61                 if (!di.Exists) { di.Create(); }
 62 
 63                 file.SaveAs(FilePath + FileName);
 64                 files[1] = FileName;
 65                 files[2] = FilePath + FileName;
 66 
 67 
 68                 return files;
 69             }
 70             catch (Exception ex)
 71             {
 72                 throw ex;
 73             }
 74         }
 75 
 76         public static void CreateDir(string driPath)
 77         {
 78             DirectoryInfo di = new DirectoryInfo(FileBase.fileBasePath + "/" + driPath);
 79             if (!di.Exists) { di.Create(); }
 80         }
 81 
 82         /// <summary>
 83         /// 清空文件夹的文件
 84         /// </summary>
 85         /// <param name="floder"></param>
 86         /// <param name="tempId"></param>
 87         public static void ClearFolderFiles(string path)
 88         {
 89             try
 90             {
 91                 string[] files = { "", "", "" };
 92                 String Tpath = "/" + path + "/";
 93                 string FilePath = FileBase.fileBasePath + Tpath;
 94                 DirectoryInfo di = new DirectoryInfo(FilePath);
 95                 if (di.Exists)
 96                 {
 97                     FileSystemInfo[] fileinfo = di.GetFileSystemInfos();  //返回目录中所有文件和子目录 
 98                     foreach (FileSystemInfo i in fileinfo)
 99                     {
100                         if (i is DirectoryInfo)            //判断是否文件夹
101                         {
102                             DirectoryInfo subdir = new DirectoryInfo(i.FullName);
103                             subdir.Delete(true);          //删除子目录和文件
104                         }
105                         else
106                         {
107                             File.Delete(i.FullName);      //删除指定文件
108                         }
109                     }
110                 }
111 
112             }
113             catch (Exception ex)
114             {
115                 throw ex;
116             }
117         }
118 
119 
120         public static void RemoveFile(string dirPath,string fileName)
121         {
122             try
123             {
124                 //删除文件
125                 for (int i = 0; i < Directory.GetFiles(dirPath).ToList().Count; i++)
126                 {
127                     if (Path.GetFileName(Directory.GetFiles(dirPath)[i]) == fileName)
128                     {
129                         File.Delete(fileName);
130                     }
131                 }
132             }
133             catch (Exception ex)
134             {
135                 throw ex;
136             }
137         }
138 
139 
140         public static void RemoveDir(string dirPath, string fileName)
141         {
142             try
143             {
144                 //删除文件夹
145                 for (int i = 0; i < Directory.GetDirectories(dirPath).ToList().Count; i++)
146                 {
147                     if (Directory.GetDirectories(dirPath)[i] == fileName)
148                     {
149                         Directory.Delete(fileName, true);
150                     }
151                 }
152             }
153             catch (Exception ex)
154             {
155                 throw ex;
156             }
157         }
158 
159 
160         /// <summary>
161         /// 实体集合转datatable
162         /// </summary>
163         /// <typeparam name="T"></typeparam>
164         /// <param name="collection"></param>
165         /// <returns></returns>
166         public static DataTable ToDataTable<T>(IEnumerable<T> collection)
167         {
168             var props = typeof(T).GetProperties();
169             var dt = new DataTable();
170             dt.Columns.AddRange(props.Select(p => new DataColumn(p.Name, p.PropertyType)).ToArray());
171             if (collection.Count() > 0)
172             {
173                 for (int i = 0; i < collection.Count(); i++)
174                 {
175                     ArrayList tempList = new ArrayList();
176                     foreach (PropertyInfo pi in props)
177                     {
178                         object obj = pi.GetValue(collection.ElementAt(i), null);
179                         tempList.Add(obj);
180                     }
181                     object[] array = tempList.ToArray();
182                     dt.LoadDataRow(array, true);
183                 }
184             }
185             return dt;
186         }
187 
188 
189 
190         public static FileName SaveFiles(FileBase.FileFloder floder, HttpPostedFile file)
191         {
192             try
193             {
194                 FileName fileName = new SN_DEV_Help.FileName();
195                 //string status = "";
196                 String Tpath = "/" + floder + "/" + DateTime.Now.ToString("yyyy-MM-dd") + "/";
197                 string docName = file.FileName;
198                 string dufix = Path.GetExtension(docName);
199                 string FileName = DateTime.Now.ToString("yyyyMMddHHmmssfff") + "-" + System.Guid.NewGuid().ToString();
200                 string FilePath = FileBase.fileBasePath + Tpath;
201                 DirectoryInfo di = new DirectoryInfo(FilePath);
202                 if (!di.Exists) { di.Create(); }
203 
204                 file.SaveAs(FilePath + FileName + dufix);
205                 fileName.url = (FilePath + FileName + dufix).Replace("\", "/");
206                 fileName.name = FileName;
207                 return fileName;
208             }
209             catch (Exception ex)
210             {
211                 throw ex;
212             }
213         }
214 
215         public static FileDetails UploadFile()
216         {
217             FileDetails fileDetails = new FileDetails();
218             HttpFileCollection filelist = HttpContext.Current.Request.Files;
219             if (filelist != null && filelist.Count > 0)
220             {
221                 for (int i = 0; i < filelist.Count; i++)
222                 {
223                     HttpPostedFile file = filelist[i];
224                     try
225                     {
226                         var fileName = FileHelp.SaveFiles(FileBase.FileFloder.Institution, file);
227                         fileDetails.Url = fileName.url;
228                         fileDetails.name = fileName.name;
229                         fileDetails.oldname = System.IO.Path.GetFileNameWithoutExtension(file.FileName);
230                         fileDetails.Format = System.IO.Path.GetExtension(file.FileName);
231                         fileDetails.Msg = 1;
232                     }
233                     catch (Exception ex)
234                     {
235                         fileDetails.Msg = 0;
236                     }
237                 }
238             }
239             else
240             {
241                 fileDetails.Msg = 0;
242                 fileDetails.Result = "上传的文件信息不存在！";
243             }
244             return fileDetails;
245         }
246 
247 
248         public static List<FileDetails> UploadFileT()//上传多个文件
249         {
250             List<FileDetails> list = new List<SN_DEV_Help.FileDetails>();
251 
252             HttpFileCollection filelist = HttpContext.Current.Request.Files;
253             if (filelist != null && filelist.Count > 0)
254             {
255                 for (int i = 0; i < filelist.Count; i++)
256                 {
257                     FileDetails fileDetails = new FileDetails();
258                     HttpPostedFile file = filelist[i];
259                     try
260                     {
261                         var fileName = FileHelp.SaveFiles(FileBase.FileFloder.Institution, file);
262                         fileDetails.Url = fileName.url;
263                         fileDetails.name = fileName.name;
264                         fileDetails.oldname = file.FileName;
265                         fileDetails.Msg = 1;
266                     }
267                     catch (Exception ex)
268                     {
269                         fileDetails.Msg = 0;
270                     }
271                     list.Add(fileDetails);
272                 }
273             }
274             else
275             {
276                 //fileDetails.Msg = 0;
277                 //fileDetails.Result = "上传的文件信息不存在！";
278             }
279             return list;
280         }
281 
282 
283     }
284     public class FileDetails //details
285     {
286         /// <summary>
287         /// 保存链接
288         /// </summary>
289         public string Url { get; set; }
290 
291         public int Msg { get; set; }
292 
293         public string Format { get; set; }
294 
295         public string Result { get; set; }
296 
297         public string name { get; set; }
298         public string oldname { get; set; }
299     }
300 
301     public class FileName
302     {
303         public string url { get; set; }
304         public string name { get; set; }
305     }

保存文件

 1  FileDetails fileDetails = FileHelp.UploadFile();
 2                         if (fileDetails.Msg == 1)
 3                         {
 4                             //保存文件资源
 5                             documentresources file = new documentresources
 6                             {
 7                                 DocName = fileDetails.oldname,
 8                                 FileName = fileDetails.name,
 9                                 DocSuffix = fileDetails.Format,
10                                 DocUrl = fileDetails.Url,
11                                 UpDate = DateTime.Now.ToString()
12                             };
13                             dbContext.documentresources.Add(file);
14                             dbContext.SaveChanges();
15                            
16                         }
17                         else
18                         {
19                             dbContextTranscation.Rollback();
20                             faild.status = Result.失败;
21                             faild.msg = "上传文件出错";
22                             return JsonHelper.SerializeObject(faild);
23                         }

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原文地址：https://www.cnblogs.com/huangtaiyi/p/10789345.html