那位大师进来帮忙看看难题 我想对 excle 进行操作.........
在我想对 excel操作时 想写代码: Excel.Application app = new Excel.Application();
可是怎么也 NEW 不出来了 这是怎么回事 我在线等待 给高分的.......
我添加的引用是 microsoft excel 11.0 object library 类型库版本是 1.5 这个COM 组件

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在引用中using Excel = Microsoft.Office.Interop.Excel;

然后 
 Excel.Application excel = new Excel.Application();
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出异常了吗？什么异常。
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[C#]

using Excel;

_Application xlApp = null;

_Workbook xlWorkbook = null;

_Worksheet xlWorksheet = null;

 

System.Reflection.Missing oMissing = System.Reflection.Missing.Value;

string saveAsPath = "";

 

try

{

xlApp = new ApplicationClass();

xlApp.Visible = true;

xlWorkbook = xlApp.Workbooks.Add(oMissing);

xlWorksheet = xlWorkbook.Worksheets.Add(oMissing, oMissing, 1, oMissing) as _Worksheet;

xlWorksheet.Name = "NewWorksheet";

xlWorksheet.Cells[1, 1] = "Topic: ";

xlWorksheet.Cells[1, 2] = ".Net Interop Excel Demo";

saveAsPath = System.Windows.Forms.Application.StartupPath + "\\" + xlWorkbook.Name;

xlWorkbook.SaveAs(saveAsPath, oMissing, oMissing, oMissing, oMissing,

oMissing, Excel.XlSaveAsAccessMode.xlShared, oMissing, oMissing, oMissing, 

oMissing, oMissing);

xlApp.Quit();

}

catch(Exception ex)

{

MessageBox.Show(ex.Message);

}

finally

{

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

xlApp = null;

GC.Collect();

}

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new ApplicationClass(); 用这个。
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Workbook workbook = excelApp.Workbooks.Open(stExcelPath, missing, missing, missing, missing, missing, missing, missing, missing, missing, missing, missing, missing, missing, missing);
//创建工作簿
Worksheet workSheet = (Worksheet)workbook.ActiveSheet;
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你去.net 引用里面找 Microsoft.Office.Interop.Excel

然后写上面的代码。

我觉得是你因用错了。

你转到定义看看引用的是不是你想要的。双击看看 对象浏览器 都引用的什么。