C#调用Excel后无法退出Excel进程的解决方法

不废话, 开门见山...

 

将 调用 Excel 的操作单独写成方法 / 函数,  再写一个方法 / 函数 调用它, 并强制垃圾回收

 

//Excel 操作

 

public void DoSomething()
        {

            Missing missing = Missing.Value;

            Excel.Application excel = new Excel.Application();

            if (excel == null)
            {
                MessageBox.Show("打开 Excel 时出错", "");
                return;
            }
            excel.Visible = false;
            excel.AlertBeforeOverwriting = false;
            excel.DisplayAlerts = false;
            Excel.Workbook book = excel.Workbooks.Open(TemplateFile,
                            missing, missing, missing, missing, missing, missing, missing,
                            missing, missing, missing, missing, missing, missing, missing);

            if (book == null)
            {
                MessageBox.Show("打开 Excel 时出错", "");
                return;
            }

            Excel.Worksheet sheet = book.Sheets[1] as Excel.Worksheet;

            if (sheet == null)
            {
                MessageBox.Show("打开 Excel 时出错", "");
                return;
            }
            try
            {

                //do something

            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message, "意外");

            }
            finally
            {
                sheet.SaveAs("c:\1.xls", missing, missing, missing, missing, missing, missing, missing, missing, missing);
                book.Save();
                excel.Workbooks.Close();
                excel.Quit();
                sheet = null;
                book = null;
                excel = null;

            }

}

 

 

//调用 DoSomething()

 

public void ExportData()
        {
            try
            {
                DoSomething();

            }
            catch (Exception)
            {
                //Error

            }
            finally
            {

                //垃圾回收
                GC.Collect();
            }
        }