关闭Excel进程

今天发现导入数据时打开了很多的Excel进程，上网看了会，都说方法外垃圾回收和杀进程。详细试了试，我的代码似乎只需要Quit就行。

using Excel = Microsoft.Office.Interop.Excel;

Excel.Application m_objExcel = null;
Excel._Workbook m_objBook = null;
Excel.Sheets m_objSheets = null;
Excel._Worksheet m_objSheet = null;
object m_objOpt = System.Reflection.Missing.Value;
try
{
    m_objExcel = new Excel.Application();
    m_objBook = m_objExcel.Workbooks.Open(filePath, 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));
    Excel.Range myRange = null;
    for (int i = startRow; i < maxRow; i++)   //循环填充数据
    {
        //读取主值   
        //Excel.Range range = m_objSheet.get_Range("A" + i.ToString(), "C" + i.ToString());
        //System.Array myvalues = (System.Array)range.Cells.Value2;
        myRange = (Excel.Range)m_objSheet.Cells[i, valIndex];
        string val = string.Format("{0}", myRange.Value2);
        if (string.IsNullOrEmpty(val))//空白的值不使用
            continue;
        myRange = (Excel.Range)m_objSheet.Cells[i, keyIndex];
        string key = string.Format("{0}", myRange.Value2);                    
        if (this.excelContent.ContainsKey(key))
        {
            Console.WriteLine(string.Format("重复编码。行{0}编码{1}", i, key));
            continue;
        }
        this.excelContent.Add(key, val);
    } 
}
catch(Exception ex)
{
    Console.WriteLine("取原始信息出错：" + ex.Message);
}
finally
{
    m_objExcel.Quit();
    //System.Runtime.InteropServices.Marshal.ReleaseComObject(m_objBook);//这个象没有效果
    //System.Runtime.InteropServices.Marshal.ReleaseComObject(m_objExcel);
    //int generation = System.GC.GetGeneration(m_objExcel);
    //GC.Collect(generation);
}

 

WinForm程序,excel版本12.0.0.0