请问在.net core中如何支持 OleDbDataAdapter ？

Question

       public static DataTable getExcelTable(string ExcelFile, string sheetName)
        {


            DataSet ds = new DataSet();

            //string strConn = "Provider=Microsoft.Ace.OleDb.12.0;Data Source= " + ExcelFile + "; Extended Properties='Excel 12.0;HDR=No'";
            string strConn = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source= " + ExcelFile + "; Extended Properties='Excel 8.0;HDR=No'";
            OleDbDataAdapter oada = new OleDbDataAdapter("select * from [" + sheetName + "$]", strConn);
            oada.Fill(ds);

            return ds.Tables[0];

        }

不知道怎么回事，无法添加程序集

Answer 1

刚才有个高手回复，原来在.net core中已经不能这样读取excel了，需要使用npoi等包，用nuget查找安装

Answer 2

你好，

据我所知，OLEDB是一种Windows（唯一）技术。

但是ASP.NET Core是一种跨平台技术，所以以前的OLEDB的类库不能在ASP.NET Core中使用。

我建议你可以尝试使用closedxml。

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Answer 3

好的，非常感谢

Answer 4

     public int  CheckResultExcelExportClosedXML(string regionCode,string serverPath,out string saveFile)
        {
            string queryString = "select  *a,b,c from  ....";
            DataSet domainlData = SQLHelper.GetBusinessData(queryString);
            string v_dataSource = "", v_corpName = "", v_websiteRecodNumber, v_domain = "", v_accessIP = "", v_checkResult = "";

            Random random = new Random();
            string v_tail = (random.Next(1000).ToString());
            v_tail = "00" + v_tail;
            v_tail = v_tail.Substring(v_tail.Length - 3);
            saveFile = "Result"+v_tail+".xlsx";

            int x = 2;
            using (var workbook = new XLWorkbook())
            {
                var ws = workbook.Worksheets.Add("sheet1");

               

                ws.Cell(1, 1).Value = "数";
                ws.Cell(1, 2).Value = "公";
                ws.Cell(1, 3).Value = "网";
                ws.Cell(1, 4).Value = "域";
                ws.Cell(1, 5).Value = "接";
                ws.Cell(1, 6).Value = "稽核结果";


                foreach (DataRow row in domainlData.Tables["result"].Rows)
                {
                    v_dataSource = Convert.ToString(row["dataSource"].ToString());
                    v_corpName = Convert.ToString(row["corpName"].ToString());
                    v_websiteRecodNumber = Convert.ToString(row["websiteRecodNumber"].ToString());
                    v_domain = Convert.ToString(row["domain"].ToString());
                    v_accessIP = Convert.ToString(row["accessIP"].ToString());
                    v_checkResult = Convert.ToString(row["checkResult"].ToString());
                    ws.Cell(x, 1).Value = v_dataSource;
                    ws.Cell(x, 2).Value = v_corpName;
                    ws.Cell(x, 3).Value = v_websiteRecodNumber;
                    ws.Cell(x, 4).Value = v_domain;
                    ws.Cell(x, 5).Value = v_accessIP;
                    ws.Cell(x, 6).Value = v_checkResult;
                    x++;
                }
                workbook.SaveAs(serverPath+"//"+saveFile);
            }

             
            return 0;
        }

closedxml 确实蛮好用的