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添加了Excel 12參考(其加入的Microsoft.Office.Interop.Excel和VBIDE DLL)中後,我複製並粘貼從here代碼,即這樣的:如何處理「沒有構造函數定義」和「類型不能嵌入」異常?
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using Excel = Microsoft.Office.Interop.Excel;
namespace WindowsFormsAppExcelTest
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
private void buttonCreateExcelFile_Click(object sender, EventArgs e)
{
Excel.Application xlApp;
Excel.Workbook xlWorkBook;
Excel.Worksheet xlWorkSheet;
object misValue = System.Reflection.Missing.Value;
xlApp = new Excel.ApplicationClass();
xlWorkBook = xlApp.Workbooks.Add(misValue);
xlWorkSheet = (Excel.Worksheet)xlWorkBook.Worksheets.get_Item(1);
xlWorkSheet.Cells[1, 1] = "http://csharp.net-informations.com";
xlWorkBook.SaveAs("csharp-Excel.xls",
Excel.XlFileFormat.xlWorkbookNormal, misValue, misValue, misValue, misValue,
Excel.XlSaveAsAccessMode.xlExclusive, misValue, misValue, misValue, misValue, misValue);
xlWorkBook.Close(true, misValue, misValue);
xlApp.Quit(); releaseObject(xlWorkSheet);
releaseObject(xlWorkBook);
releaseObject(xlApp);
MessageBox.Show("Excel file created , you can find the file c:\\csharp-Excel.xls");
}
private void releaseObject(object obj)
{
try
{
System.Runtime.InteropServices.Marshal.ReleaseComObject(obj); obj = null;
}
catch (Exception ex)
{
obj = null;
MessageBox.Show("Exception Occured while releasing object " + ex.ToString());
}
finally
{
GC.Collect();
}
}
} // class
} // namespace
但是,它未能建立具有兩個ERR的MSG:
類型 'Microsoft.Office.Interop.Excel.ApplicationClass' 沒有構造定義
-and:
Interop類型'Microsoft.Office.Interop.Excel.ApplicationClass'不能嵌入。改爲使用適用的界面。
...這兩個點,以這條線的罪魁禍首:
xlApp = new Excel.ApplicationClass();
如果我從該行刪除「新」,第一個錯誤消息的變化:
'微軟.Office.Interop.Excel.ApplicationClass'是'type',在給定的上下文中無效
所以這是一個「Catch 2」的情況 - 無論我做什麼,它都會捕獲兩個錯誤。
我該怎麼做才能解決這個問題?
難道不只是'new Excel.Application()'? –