我想从.NET应用程序创建一个Excel US preadsheet，然后设置一个Excel.Application实例当前目录自定义文件夹。我想这样做，这样，当用户点击在Excel中，另存为对话框已经位于正确的目录保存按钮。

I want to create an Excel spreadsheet from a .NET Application and then set the Excel.Application instance current directory to a custom folder. I want to do this so when the user clicks the save button in Excel, the Save as dialog is already located in the correct directory.

我知道这是可能改变当前目录中的Excel实例与VBA.FileSystem.ChDir和VBA code /宏这样一个Excel.Application实例中这样做：

I know it's possible to change the current directory in Excel Instance with VBA.FileSystem.ChDir and doing it within the Excel.Application instance with VBA Code/Macro like this:

从创建C＃.NET中的Excel US preadsheet

Create an Excel Spreadsheet from C# .NET

Microsoft.Office.Interop.Excel.Application excel = new Microsoft.Office.Interop.Excel.Application();
excel.Workbooks.Add();
excel.Visible = true;  

在Excel的小号preadsheet是开放的，按下Alt + F11。然后创建并运行下面的宏

When Excel spreadsheet is open, hit ALT + F11. Then create and run following macro

Sub SetChdir()
   Call FileSystem.ChDir("C:\To\My\Custom\Directory\")
End Sub

当点击保存Excel中的当前目录设置路径设置CHDIR

When clicking Save in Excel the Current Directory is set path set with ChDir

我想不通，甚至如果可能的话，如何创建一个从.NET这种行为。我累了瞎搞与Excel.DefaultFilePath该Excel使用启动时设置当前目录。但是它有两个问题：

I can't figure out, or even if it's possible, how to create this behaviour from .NET. I tired messing around with Excel.DefaultFilePath which Excel uses on startup to set the Current Directory. But it has two problems:

推荐答案

还有另一种方式。

excel.ExecuteExcel4Macro("DIRECTORY(\"C:\\To\\My\\Custom\\Directory\")");