使用C#和Excel进行报表开发－设置单元格的显示格式

在Excel中，如果某个单元格的内容是数字，且比较长，默认情况下，会变为科学计数发表示，例如：123456789123456000会被表示为1.2345E+17，为了能够将数字按照普通的格式完全表示，就需要设置单元格的属性 ，下面是例子代码：
Excel.Application m_objExcel = null;

Excel._Workbook m_objBook = null;

Excel.Sheets m_objSheets = null;

Excel._Worksheet m_objSheet = null;

Excel.Range m_objRange = null;

object m_objOpt = System.Reflection.Missing.Value;

try
{
m_objExcel = new Excel.Application();

m_objBook = m_objExcel.Workbooks.Open("e://1.xls", m_objOpt, m_objOpt, m_objOpt,
m_objOpt, m_objOpt, m_objOpt, m_objOpt, m_objOpt, m_objOpt, m_objOpt,
m_objOpt, m_objOpt, m_objOpt, m_objOpt);

m_objSheets = (Excel.Sheets)m_objBook.Worksheets;

m_objSheet = (Excel._Worksheet)(m_objSheets.get_Item(1));

m_objRange = m_objSheet.get_Range("A1", m_objOpt);

m_objRange.NumberFormatLocal = "#";

m_objBook.SaveAs("e://22.xls", m_objOpt, m_objOpt,

m_objOpt, m_objOpt, m_objOpt, Excel.XlSaveAsAccessMode.xlNoChange,

m_objOpt, m_objOpt, m_objOpt, m_objOpt, m_objOpt);
}

catch (Exception ex)
{

MessageBox.Show(ex.Message);

}

finally
{

m_objBook.Close(m_objOpt, m_objOpt, m_objOpt);

m_objExcel.Workbooks.Close();

m_objExcel.Quit();

System.Runtime.InteropServices.Marshal.ReleaseComObject(m_objBook);

System.Runtime.InteropServices.Marshal.ReleaseComObject(m_objExcel);

m_objBook = null;

m_objExcel = null;

GC.Collect();

}
完