C# 在c中打开并保存excel文档#
我试图在C#中打开并保存一个Excel文档,但总是出现错误:“无法使用已与其基础RCW分离的COM对象。”代码>我在谷歌上搜索了很多解决方案,但到目前为止没有一个适合我 这是我的密码:C# 在c中打开并保存excel文档#,c#,excel,file-io,save,C#,Excel,File Io,Save,我试图在C#中打开并保存一个Excel文档,但总是出现错误:“无法使用已与其基础RCW分离的COM对象。”我在谷歌上搜索了很多解决方案,但到目前为止没有一个适合我 这是我的密码: using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Linq; using System.Text; usin
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 Microsoft.Office.Core;
using Excel = Microsoft.Office.Interop.Excel;
namespace test_excel
{
public partial class Form1 : Form
{
Excel.Application ExcelApp = null;
Excel.Workbook ExcelWorkBook = null;
Excel.Sheets ExcelSheets = null;
Excel.Worksheet MySheet = null;
public Form1()
{
InitializeComponent();
}
private void button1_Click(object sender, EventArgs e)
{
ExcelApp = new Excel.Application();
ExcelApp.Visible = false;
ExcelWorkBook = ExcelApp.Workbooks.Open("c:\\test.xls", 0, true, 5, "", "", false, Excel.XlPlatform.xlWindows, "", true, false, 0, true, false, false);
ExcelSheets = ExcelWorkBook.Worksheets;
MySheet = (Excel.Worksheet)ExcelSheets.get_Item("Sheet1");
int a = (int)MySheet.Range["a1"].Value2;
label1.Visible = true;
int b = a + 1;
label1.Text = a.ToString() + " | " + b.ToString();
MySheet.Range["a1"].Value2 = b;
}
private void releaseObject(object obj)
{
try
{
System.Runtime.InteropServices.Marshal.ReleaseComObject(obj);
obj = null;
}
catch (Exception ex)
{
obj = null;
MessageBox.Show("Unable to release the Object " + ex.ToString());
}
finally
{
GC.Collect();
}
}
private void button2_Click(object sender, EventArgs e)
{
try
{
System.Runtime.InteropServices.Marshal.ReleaseComObject(ExcelSheets);
ExcelWorkBook.Close(false, System.Reflection.Missing.Value, System.Reflection.Missing.Value);
releaseObject(ExcelApp);
releaseObject(ExcelSheets);
releaseObject(ExcelWorkBook);
ExcelApp.Visible = false;
ExcelApp.UserControl = false;
ExcelWorkBook.SaveAs("c:\\test.xls", Excel.XlFileFormat.xlWorkbookNormal,
null, null, false, false, Excel.XlSaveAsAccessMode.xlShared,
false, false, null, null, null);
ExcelWorkBook.Close();
}
catch (Exception err)
{
String msg;
msg = "Error: ";
msg = String.Concat(msg, err.Message);
msg = String.Concat(msg, " Line: ");
msg = String.Concat(msg, err.Source);
Console.WriteLine(msg);
}
finally
{
try
{
ExcelApp.Visible = false;
ExcelApp.UserControl = false;
ExcelWorkBook.Close(true, null, null);
ExcelApp.Workbooks.Close();
}
catch { }
ExcelApp.Quit();
if (MySheet != null) { System.Runtime.InteropServices.Marshal.ReleaseComObject(MySheet); }
if (ExcelWorkBook != null) { System.Runtime.InteropServices.Marshal.ReleaseComObject(ExcelWorkBook); }
if (ExcelApp != null) { System.Runtime.InteropServices.Marshal.ReleaseComObject(ExcelApp); }
MySheet = null;
ExcelWorkBook = null;
ExcelApp = null;
GC.Collect();
}
}
}
}
我认为您正在导致
ExcelApp
在此处获得GC
'd:releaseObject(ExcelApp)代码>
然后您试图告诉它在这里执行一个方法:ExcelApp.Quit()代码>
尝试移动releaseObject(ExcelApp)
在您呼叫后退出
您看到了吗?我尝试了您编写的内容,没有出现错误,但我的应用程序仍然无法写入并保存到excel。你能帮我吗?如果我的答案解决了你的问题,请投票并选择它作为答案。至于编写excel,您上面的问题与编写或保存无关。请打开另一个问题,说明您的问题。