C# 导入excel

        /// <summary>
        /// 导入excel数据
     /// </summary>
        /// <param name="hasTitle"></param>
        /// <returns></returns>
        public System.Data.DataTable GetDataFromExcelByConn(bool hasTitle = false)
        {
            OpenFileDialog openFile = new OpenFileDialog();
            openFile.Filter = "Excel(*.xls)|*.xls";
            openFile.InitialDirectory = Environment.GetFolderPath(Environment.SpecialFolder.Desktop);
            openFile.Multiselect = false;
            if (openFile.ShowDialog() == DialogResult.Cancel) return null;
            var filePath = openFile.FileName;
            string fileType = System.IO.Path.GetExtension(filePath);
            if (string.IsNullOrEmpty(fileType)) return null;

            using (DataSet ds = new DataSet())
            {
                string strCon = string.Format("Provider=Microsoft.Jet.OLEDB.{0}.0;" +
                                "Extended Properties=\"Excel {1}.0;HDR={2};IMEX=1;\";" +
                                "data source={3};",
                                (fileType == ".xls" ? 4 : 12), (fileType == ".xls" ? 8 : 12), (hasTitle ? "Yes" : "NO"), filePath);
                string strCom = " SELECT * FROM [Sheet1$]";
                using (OleDbConnection myConn = new OleDbConnection(strCon))
                using (OleDbDataAdapter myCommand = new OleDbDataAdapter(strCom, myConn))
                {
                    myConn.Open();
                    myCommand.Fill(ds);
                }
                if (ds == null || ds.Tables.Count <= 0) return null;
                return ds.Tables[0];
            }
        }


// 具体使用方法，同datatable使用方式一样
DataTable table = GetDataFromExcelByConn();
table.Rows[1][1].ToString(); // 获取第二行第二例数据