操作excel

我操作的是2007個2010版本的excel

首先是讀取

        /// <summary>
        /// 讀取xls\xlsx格式的Excel文件的方法
        /// </summary>
        /// <param name="path">待讀取Excel的全路徑</param>
        /// <returns></returns>
        private DataTable ReaderExcelToTable(string path)
        {
            //連接字符串
            string connString = "Provider=Microsoft.ACE.OLEDB.12.0;Data Source=" + path + ";Extended Properties='Excel 8.0;HDR=NO;IMEX=1';";
            // Office 07及以上版本 不能出現多餘的空格 而且分號注意
            using (OleDbConnection conn = new OleDbConnection(connString))
            {
                conn.Open();
                //DataTable sheetsName = conn.GetOleDbSchemaTable(OleDbSchemaGuid.Tables,
                //    new object[] { null, null, null, "Table" });    //得到所有sheet的名字
                string danXuanTiName = "sheet1";
                string sql = string.Format("select * from [{0}]", danXuanTiName + "$");    //查詢字符串
                OleDbDataAdapter dta = new OleDbDataAdapter(sql, connString);
                DataSet set = new DataSet();
                dta.Fill(set);
                return set.Tables[0];
            }
        }

 

寫入excel

private void TableOutExcel(DataTable dt)
        {
            //指定要創建副本文件的路徑和Name
            string filePath = Server.MapPath("/_Layouts/" + Guid.NewGuid().ToString() + ".xlsx");
            //根據現存模板文件創建副本
            File.Copy(Server.MapPath("/_Layouts/QuestionDemo.xlsx"), filePath);
            //使用OleDb連接副本
            OleDbConnection conn = new OleDbConnection("Provider=Microsoft.ACE.OLEDB.12.0;Data Source=" + filePath + ";Extended Properties='Excel 8.0;HDR=YES';");
            using (conn)
            {
                conn.Open();
                foreach (DataRow row in dt.Rows)
                {
                    OleDbCommand comd = new OleDbCommand("INSERT INTO [單選題$]([試題內容],[試題選項],[正確答案],[試題等級]) VALUES(@Question,@Option,@RAnser,@Drg)", conn);
                    comd.Parameters.AddWithValue("@Question", row[0].ToString());
                    comd.Parameters.AddWithValue("@Option", row[1].ToString());
                    comd.Parameters.AddWithValue("@RAnser", row[2].ToString());
                    comd.Parameters.AddWithValue("@Drg", row[3].ToString());
                    comd.ExecuteNonQuery();
                }
            }
            // 輸出副本的二進制字節流
            Response.ContentType = "application/ms-excel";
            Response.AppendHeader("Content-Disposition", "attachment;filename=Question.xlsx");
            Response.BinaryWrite(File.ReadAllBytes(filePath));
            // 刪除副本
            File.Delete(filePath);
        }

 

這個方法的做法是，先copy服務器上的一個模板，然後根據模板生成一個excel，然後添加數據，最後輸出excel，讓用戶下載