C# 完整上传文件 代码

首先是aspx页面

<asp:FileUpload ID="FUploadAttachMent" runat="server" Height="25px" Width="665px" /> <asp:Button ID="Button1" runat="server" Text="上传" onclick="BtnUpload_Click" />

然后是cs页面

 

protected void BtnUpload_Click(object sender, EventArgs e) { string str=this.FileUpload(); MessageBox(this.page,str); } #region FileUpload 上传文件（外層判斷） protected string FileUpload(string InputData) { string inputPath = ""; string str3 = ""; try { inputPath = "//empr/Data/"; str3 = FileUploadExe(inputPath); } catch (Exception ex) { MessageBox.Show(Page, ex.Message); } return str3; } protected string FileUploadExe(string inputPath) { string inputTotalPath = ""; string str3 = ""; if (this.FUploadAttachMent.HasFile) { inputTotalPath = inputPath + this.FUploadAttachMent.FileName.ToString(); if (Files.IsDirectoryExists(inputPath)) { this.IsExistsUp(inputTotalPath, inputPath, this.FUploadAttachMent.FileName); //三个参数，第一个参数内容就是第二个加第三个，第二个是上传地址，第三个是上传的文件名 str3 = "文件上傳成功！"; } else { Files.CreateDirectory(inputPath);//不存在则创建目录 this.IsExistsUp(inputTotalPath, inputPath, this.FUploadAttachMent.FileName); str3 = "文件上傳成功！"; } } return str3; } #region IsExistsUp 檢測文件並上傳（裏層上傳） protected void IsExistsUp(string InputTotalPath, string InputPath, string InputFileName) { try { if (Files.IsFileExists(InputTotalPath)) { Files.ReNameFile(InputPath, InputFileName);//檢測源文件存在，則重命名 this.FUploadAttachMent.SaveAs(InputTotalPath); } else { this.FUploadAttachMent.SaveAs(InputTotalPath); } } catch (Exception ex) { MessageBox.Show(Page, ex.Message); } } #endregion

其中，IsExistsUp方法里面用到了Files文件里面的内容

Files.cs

using System; using System.Collections.Generic; using System.Web; using System.IO; using System.Text; /// <summary> ///Files 的摘要说明 /// </summary> public class Files { public static string strEx = ""; public static int Start = 0; public static int Length = 0; public Files() { // //TODO: 在此处添加构造函数逻辑 // } #region 成员方法 #region 目录是否存在 public static Boolean IsDirectoryExists(string InputPath) { Boolean strFlag = false; try { if (InputPath.Length > 0) { strFlag = Directory.Exists(InputPath); } } catch (Exception ex) { strEx = ex.Message; } return strFlag; } #endregion #region 创建文件目录 public static Boolean CreateDirectory(string InputPath) { Boolean strFlag = false; try { if (!Directory.Exists(InputPath)) { Directory.CreateDirectory(InputPath); strFlag = true; } } catch (Exception ex) { strEx = ex.Message; } return strFlag; } #endregion #region 文件是否存在 public static Boolean IsFileExists(string InputPath) { Boolean strFlag = false; try { strFlag = File.Exists(InputPath); } catch (Exception ex) { strEx = ex.Message; } return strFlag; } #endregion #region 重命名（替換舊文件名） /// <summary> /// 20100917新增代碼，為檢測文件是否存在 /// 如存在，則重命名舊文件，再上傳新文件 /// </summary> public static void ReNameFile(string path, string filename) { string path1 = path + filename; string[] filepath = Directory.GetFiles(path); foreach (string file in filepath) { if (file.ToString().Trim() == path1.ToString().Trim()) { string time = GetUploadDateTime(); string[] strArray = file.Split(new char[] { '.' }); string str1 = strArray[0].ToString(); string str2 = strArray[1].ToString(); string newfilename = str1 + time + "." + str2; System.IO.File.Move(file, newfilename); break; } } } #endregion #region 删除指定文件 public static Boolean DeleteFile(string InputPath) { Boolean strFlag = false; try { if (File.Exists(InputPath)) { File.Delete(InputPath); strFlag = true; } } catch (Exception ex) { strEx = ex.Message; } return strFlag; } #endregion #region 返回文件日期名 public static string GetUploadDateTime() { string strMonth = ""; string strDay = ""; string strHour = ""; string strMinute = ""; string strSecond = ""; string strResult = ""; try { //Month switch (DateTime.Now.Month) { case 1: case 2: case 3: case 4: case 5: case 6: case 7: case 8: case 9: strMonth = "0" + DateTime.Now.Month ; break; default: strMonth = DateTime.Now.Month.ToString (); break; } //Day switch (DateTime.Now.Day) { case 1: case 2: case 3: case 4: case 5: case 6: case 7: case 8: case 9: strDay = "0" + DateTime.Now.Day; break; default: strDay = DateTime.Now.Day.ToString(); break; } //Hour switch (DateTime.Now.Hour) { case 1: case 2: case 3: case 4: case 5: case 6: case 7: case 8: case 9: strHour = "0" + DateTime.Now.Hour; break; default: strHour = DateTime.Now.Hour.ToString(); break; } //Minute switch (DateTime.Now.Minute) { case 1: case 2: case 3: case 4: case 5: case 6: case 7: case 8: case 9: strMinute = "0" + DateTime.Now.Minute; break; default: strMinute = DateTime.Now.Minute.ToString(); break; } //Second switch (DateTime.Now.Second) { case 1: case 2: case 3: case 4: case 5: case 6: case 7: case 8: case 9: strSecond = "0" + DateTime.Now.Second; break; default: strSecond = DateTime.Now.Second.ToString(); break; } strResult = DateTime.Now.Year + strMonth + strDay + strHour + strMinute + strSecond; } catch (Exception ex) { strEx = ex.Message; } return strResult; } #endregion #region 返回文件名称 public static string GetFileName(string InputPath) { string strTotalPath = ""; string strResult = ""; try { strTotalPath = InputPath.ToUpper ().Replace(@"/", "/").ToString(); if (strTotalPath.Length > 0) { Start = strTotalPath.LastIndexOf("/", strTotalPath.Length) + 1; Length = strTotalPath.Length - Start; strResult = strTotalPath.Substring(Start, Length); } } catch (Exception ex) { strEx = ex.Message; } return strResult; } #endregion #endregion }

OK,至此，我做的上传文件就成功完成了、、、、