asp.net上传excel文件后，在页面上加载显示代码,Asp.Net代码库,德仔网

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【Asp.Net】 asp.net上传excel文件后，在页面上加载显示
作者:Dezai.CN / 发布于2013/5/13/ 701

	#region 上传Execl文件
	 protected void Button1_Click(object sender, EventArgs e)
	 {
	 if (FileUpload1.HasFile)
	 {
	 string NewFileName = string.Empty;
	 string ErrorMess = UpLoadFile(FileUpload1, ".xls|.xlsx", 1024 * 5, Server.MapPath("/Report/SocialApply/"), 1, out NewFileName);
	 if (string.IsNullOrEmpty(ErrorMess))
	 {
	 Label1.Text = "&radic;文件上传成功";
	 ViewState["UpLoadFile"] = "/Report/SocialApply/" + NewFileName;
	 try
	 {
	 FileStream file = new FileStream
	 (Server.MapPath(ViewState["UpLoadFile"] as string),
	 FileMode.Open, FileAccess.Read,
	 FileShare.ReadWrite);
	 DataTable dt1 = FairHR.Util.XmlExcelReport.ReadExcelToDataTable(file, 0, 0);

	 ViewState.Add("ViewDT", dt1);
	 GridView1.DataSource = ViewState["ViewDT"] as DataTable;
	 GridView1.DataBind();
	 file.Close();
	 //Maticsoft.Common.MessageBox.ResponseScript(Page, "$.messager.alert('系统提示', '操作成功！', 'info');");
	 }
	 catch
	 {
	 Maticsoft.Common.MessageBox.ResponseScript(Page, "$.messager.alert('系统提示', '请重新上传Execl文件再操作', 'warning');");
	 }
	 }
	 else
	 {
	 Label1.Text = "&times;文件上传失败";
	 }
	 }
	 else
	 {
	 Label1.Text = "&times;请先选择上传文件";
	 }
	 ScriptManager.RegisterClientScriptBlock(Page, this.GetType(), "idAlert1", "closeLoad();", true);
	 }
	 #endregion

	 #region 上传文件
	 /// <summary>
	 /// 上传文件
	 /// </summary>
	 /// <param name="fu">上传文件</param>
	 /// <param name="type">上传文件类型,例如.jpg|.gif|.bmp</param>
	 /// <param name="size">限制上传文件大小，单位为k</param>
	 /// <param name="path">上传路径，需使用server.mappath</param>
	 /// <param name="nametype">1为自动命名,0用原名</param>
	 /// <returns></returns>
	 public static string UpLoadFile(FileUpload fu, string type, int size, string path, int nametype, out string newFileName)
	 {
	 newFileName = null;
	 string erorr = null;
	 int Size = fu.PostedFile.ContentLength / 1024;
	 if (Size > size)
	 {
	 erorr = "上传文件太大！";
	 return erorr;
	 }
	 string Type = fu.FileName;
	 if (Type.IndexOf(".") == -1) { erorr = "上传文件类型有误！"; return erorr; }
	 Type = Type.Substring(Type.LastIndexOf(".")).ToUpper();
	 type = type.ToUpper();
	 if (type.IndexOf(Type) == -1) { erorr = "上传文件类型有误！"; return erorr; }

	 string filename = "";
	 if (nametype == 1)
	 {
	 string nowdate = DateTime.Now.ToString();
	 nowdate = nowdate.Replace(":", "").Replace(" ", "").Replace("-", "").Trim();
	 Random r = new Random();
	 int a = r.Next(1000);
	 filename = nowdate + a.ToString() + Type;
	 newFileName = filename;
	 }
	 else
	 {
	 filename = fu.FileName;
	 if (System.IO.File.Exists(path + filename)) { erorr = "此文件名已经存在！"; return erorr; }
	 }

	 fu.SaveAs(path + filename);
	 return erorr;//返回有错的错误信息，没有错误返回null
	 }
	 #endregion
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