这篇文章主要介绍了.Net读取Excel 返回DataTable实例代码,有需要的朋友可以参考一下
代码如下: using System; using Microsoft.SharePoint; using Microsoft.SharePoint.WebControls; using System.Data; using System.IO; using System.Linq; using System.Web; using System.Collections; using System.Data.OleDb; using NuctechProject.DTO.Bll; using System.Collections.Generic; namespace NuctechProject.Layouts.Project { public partial class IntroductionPlan : LayoutsPageBase { string url = Common.rootUrl; private string _strConn; //导入excel时的连接 string pmurl = Common.proUrl; private UserBLL bll = new UserBLL(); protected void Page_Load(object sender, EventArgs e) { hidProid.Value = Request.QueryString["proid"]; } protected void BtnOK_Click(object sender, EventArgs e) { DataTable excelTable = null; SPSecurity.RunWithElevatedPrivileges(delegate { if (BaseInfoTemplateFile.HasFile) { List<string> noInput = new List<string>(); string strLoginName = HttpContext.Current.User.Identity.Name; //获取用户名 string folderTemp = strLoginName.Substring(strLoginName.LastIndexOf('') + 1); try { string extension = Path.GetExtension(BaseInfoTemplateFile.FileName); //获取文件的后缀 if (extension != null) { string fileException = extension.ToLower(); if (fileException == ".xlsx" || fileException == ".xls") { #region 读取Excel string fileFolder = Server.MapPath("~/_layouts/15/images/" + folderTemp + "Upfile/"); if (!Directory.Exists(fileFolder)) //根目录 { Directory.CreateDirectory(fileFolder); //判断上传目录是否存在 自动创建 } BaseInfoTemplateFile.SaveAs(Server.MapPath("~/_layouts/15/images/" + folderTemp + "Upfile/" + BaseInfoTemplateFile.FileName)); string strFilepathNmae = Server.MapPath("~/_layouts/15/images/" + folderTemp + "Upfile/" + BaseInfoTemplateFile.FileName); string strExcel = ExcelSheetName(strFilepathNmae)[0].ToString(); excelTable = ExcelDataSource(strFilepathNmae, strExcel).Tables[0]; #endregion //data是excel的数据 DataTable data = ExcelDataSource(strFilepathNmae, strExcel).Tables[0]; //try //{ if (data != null) { foreach (DataRow row in data.Rows) { //读取 } } //} //catch (Exception) //{ // Page.ClientScript.RegisterStartupScript(Page.ClientScript.GetType(), "myscript", "<script type='text/javascript'>$.ligerDialog.closeWaitting();alert('Excel表列名与系统不符合,请检查Excel表列名!');</script>"); // return; //} } else { Page.ClientScript.RegisterStartupScript(Page.ClientScript.GetType(), "myscript", "<script type='text/javascript'>$.ligerDialog.closeWaitting();alert('您选择的文