Excel 表"A1"里是时间格式 2013-06-25

用的是老的2003
导入Excel 11.0 COM组件


using System;
using System.Reflection;
using Excel;

static void Main()
{
  Excel.Application Ex = new Excel.Application();
  Ex.Visible = false;
  Excel.Workbook ExBook =   Ex.Workbooks._Open(@"123.xls",Missing.Value,Missing.Value,Missing.Value,Missing.Value,Missing.Value,Missing.Value,Missing.Value,Missing.Value,Missing.Value,Missing.Value,Missing.Value,Missing.Value);
  Excel.Worksheet ExSheet = (Excel.Worksheet)ExBook.Sheets[1];
  Excel.Range a = ExSheet.get_Range("A1",Type.Missing);
  
  Console.WriteLine(a);

  ExSheet = null; ExBook = null; Ex.Quit(); Ex = null;
}//最后a 只输出2013  这是为什么?