完美解决Excel的连接字符串与上传方法

1:第一个连接字符串为上传03的，第2个连接字符串能兼容所有的

 //string strCon = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + filenameurl + ";extended properties='Excel 8.0;HDR=No;IMEX=1;'";

  string strCon = "Provider=Microsoft.ACE.OLEDB.12.0;" + "Data Source=" + filenameurl + ";" + "Extended Properties=Excel 8.0;";

2：导入按钮

 protected void btnExport_Click(object sender,EventArgs e)

        {

            if (FileUpload1.HasFile == false)

            {

                Response.Write("<script>alert('请您选择Excel文件')</script> ");

                return;//当无文件时,返回

            }

            string IsXls = System.IO.Path.GetExtension(FileUpload1.FileName).ToString().ToLower();

            if (IsXls != ".xls" && IsXls != ".xlsx")

            {

                Response.Write("<script>alert('只可以选择Excel文件')</script>");

                return;//当选择的不是Excel文件时,返回

            }

            string filename = FileUpload1.FileName;                       //获取Execle文件名

            if (!Directory.Exists(path))

            {

                Directory.CreateDirectory(path);

            }

            string FilePath = path + filename;

            if (File.Exists(FilePath))

                File.Delete(FilePath);

            //FileUpload1.SaveAs(path + filename);

            DataTable ds = ExecleDs(path + filename);

        }

        private DataTable ExecleDs(string filenameurl)

        {

            //string strCon = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + filenameurl + ";extended properties='Excel 8.0;HDR=No;IMEX=1;'";

            string strCon = "Provider=Microsoft.ACE.OLEDB.12.0;" + "Data Source=" + filenameurl + ";" + "Extended Properties=Excel 8.0;";

            OleDbConnection conn = new OleDbConnection(strCon);

            OleDbDataAdapter odda = new OleDbDataAdapter("select * from [Sheet1$]", conn);

            DataTable dt = new DataTable();

            odda.Fill(dt);

            return dt;

        }