讀取Excel到Datable

 public static DataTable ExcelToDataSet(string filename)

        {

            try

            {

                //string strCon = " Provider = Microsoft.Jet.OLEDB.4.0 ; Data Source = " + filename + ";Extended Properties=Excel 8.0";

                string strCon = "Provider=Microsoft.ACE.OLEDB.12.0;Data Source=" + filename + ";Extended Properties='Excel 8.0;HDR=NO;IMEX=1';";   // Office 07及以上版本 不能出现多余的空格 而且分号注意

                OleDbConnection conn = new OleDbConnection(strCon);

                conn.Open();

                //返回Excel的架构，包括各个sheet表的名称,类型，创建时间和修改时间等　

                DataTable dtSheetName = conn.GetOleDbSchemaTable(OleDbSchemaGuid.Tables, new object[] { null, null, null, "Table" });

                //包含excel中表名的字符串数组

                string[] strTableNames = new string[dtSheetName.Rows.Count];

                for (int k = 0; k < dtSheetName.Rows.Count; k++)

                {

                    strTableNames[k] = dtSheetName.Rows[k]["TABLE_NAME"].ToString();

                }

                OleDbDataAdapter myCommand = null;

                DataTable dt = new DataTable();

                //从指定的表明查询数据,可先把所有表明列出来供用户选择

                string strExcel = "select * from [" + strTableNames[0] + "]";

                myCommand = new OleDbDataAdapter(strExcel, strCon);

                myCommand.Fill(dt);



                return dt;

            }

            catch (Exception ex)

            {

                Console.WriteLine(ex.ToString());

                return null;

            }

        }