c# - 如何将参数从 Excel 中的 VBA 脚本作为参数传递到外部可执行文件 (C#)？

Question

我在 Excel 工作表中有一个调用 VBA 脚本的嵌入式按钮。在此脚本中，我读取当前目录、解析并使用它生成值以将 string[] args 传递到外部 C# 可执行文件。我已经经历了多次迭代，它确实调用了可执行文件，但当 C# .exe 运行时，传递的参数似乎为 null(空)。我可以在其他程序中使用此 C# .exe 并传递参数，但此 VBA 脚本无法按预期工作。我还知道它传递了正确的参数数量，因为我没有从 C# .exe 中收到越界异常。我目前正在将所有这些参数转换为字符串，以尝试解决此问题，但这很可能是没有必要的。附VBA代码:

Sub ButtonSG1b7_Click()

Dim FileLocation
Dim ProgramName
Dim length

FileLocation = ActiveWorkbook.FullName
length = Len(FileLocation) - 5
ProgramName = Left(FileLocation, length)
ProgramName = Right(ProgramName, 10)
length = Len(FileLocation) - 15
FileLocation = Left(FileLocation, length)
length = Len(FileLocation) - 2
FileLocation = Right(FileLocation, length)

MsgBox "File Location : " & FileLocation & "    Program Name: " & ProgramName

Dim str0 As String
Dim str1 As String
Dim str2 As String
Dim str3 As String
Dim str4 As String
Dim str5 As String
Dim str6 As String

str0 = "H:\StageGate\Administration\Scripts\GetLatestFileOpen.exe "
str1 = "H:"
str2 = FileLocation
str3 = "Common"
str4 = "\Market Feasibility "
str5 = ProgramName
str6 = ".xlsx"


MsgBox str0 & str1 & str2 & str3 & str4 & str5 & str6
Shell (str0 & str1 & str2 & str3 & str4 & str5 & str6)

End Sub

编辑(添加涉及 Solidworks EPDM 库的预 C# 代码，该代码接受参数，将其转换为列表，并使用该列表提供字符串文件路径以获取 EPDM 库中文件夹的最新信息，然后打开更新的本地副本文件的内容。):

using System;
using System.Diagnostics;
using System.Windows.Forms;
using System.Collections.Generic;
using System.Linq;
using System.IO;
using EPDM.Interop.epdm;

class Program
{
static void Main(string[] args)
{

    IEdmFolder5 ppoRetParentFolder;
    List<string> filePath = new List<string>(args);

    if (filePath.Any())
    {
        filePath.RemoveAt(0);  //really need to just stop having the script call passing this argument.
    }


    if (Directory.Exists(@"C:\StageGate")) {
        filePath.Insert(0,"C:");
    }
    else if (Directory.Exists(@"H:\StageGate"))
    {
        filePath.Insert(0,"H:");
    }
    else
    {
        MessageBox.Show("StageGate not found.");
    }

    string newFilePath = string.Join("", filePath.ToArray());
    filePath.RemoveAt(5);
    filePath.RemoveAt(4);
    filePath.RemoveAt(3);
    string folderPathstr = string.Join("", filePath.ToArray());
    //MessageBox.Show(folderPathstr);

    //Have to create vault object to work with BatchGet
    EdmVault5 vault = new EdmVault5();
    //Replace My_Vault with your vault name
    vault.LoginAuto("StageGate", 0);
    //Set the 2 here equal to how many folders you want to get (not counting subfolders)
    EdmSelItem[] folderArray = new EdmSelItem[1];
    IEdmBatchGet bg = (IEdmBatchGet)vault.CreateUtility(EdmUtility.EdmUtil_BatchGet);

    //Create and array element for eachf older you want to get, replace folder locations with your folders
    folderArray[0].mlDocID = 0;
    folderArray[0].mlProjID = vault.GetFolderFromPath(folderPathstr).ID;
    //fa[1].mlDocID = 0;
    //fa[1].mlProjID = vault.GetFolderFromPath("C:\\My_Vault\\FolderPath").ID;

    bg.AddSelection(vault, folderArray);
    bg.CreateTree(0, (int)EdmGetCmdFlags.Egcf_IncludeAutoCacheFiles);  //Egcf_IncludeAutoCacheFiles will get latest version of file
    bg.GetFiles(0, null);

    if (File.Exists(newFilePath))
    {

        Process process = Process.Start(newFilePath); //can't just open the file.  Need to create new windows process to have the file open in the default application(process)
        //File.Open(newPath, FileMode.Open);
    }
    else
    {
        MessageBox.Show("File not found.");
    } 

Answer 1

阅读您的 C# 代码后，我发现您的代码至少需要 6 个参数

此 VBA 代码会转义路径中可能出现的任何空格，并将它们作为命令行参数传递:

Sub ButtonSG1b7_Click()

Dim FileLocation
Dim ProgramName
Dim length

FileLocation = ActiveWorkbook.FullName
length = Len(FileLocation) - 5
ProgramName = Left(FileLocation, length)
ProgramName = Right(ProgramName, 10)
length = Len(FileLocation) - 15
FileLocation = Left(FileLocation, length)
length = Len(FileLocation) - 2
FileLocation = Right(FileLocation, length)

MsgBox "File Location : " & FileLocation & "    Program Name: " & ProgramName

Dim args(0 To 6) As String
Dim cmdln As String, i as Integer

args(0) = "H:\StageGate\Administration\Scripts\GetLatestFileOpen.exe"
args(1) = "H:"
args(2) = FileLocation
args(3) = "Common"
args(4) = "\Market Feasibility "
args(5) = ProgramName
args(6) = ".xlsx"

cmdln=arg(0)
For i = 1 To 6
cmdln=cmdln & " """ & args(i) & """"
Next i
MsgBox "VBA Code Writes: " & cmdln
Shell (cmdln)

End Sub

现在您的 C# 代码应该读取这些参数:

class Program
{
static void Main(string[] args)
{
Console.WriteLine("C# Code Reads: "+String.Join(" ", args));
}
}

如果两个进程返回相同的命令行字符串，那么您在以下几行中可能遇到的任何异常都与 VBA-C# 通信无关