在 C# 中以编程方式启用 Excel 宏

Question

我有一个 Excel 加载项，我想执行以下操作：

1. 检查工作簿是否有宏。
2. 提示用户是否要启用宏。
3. 如果是，请为用户启用宏。

有没有办法在 C# 中启用宏？

Answer 1

This article对你很有帮助。

根据文章，我将其实现为 WinForm 应用程序，因此我使用MessageBox 提示用户是否要启用宏。

在执行此操作之前，您必须在“xlsm”工作簿中的 [文件]->[选项]->[信任中心] 中检查“信任对 VBA 项目对象模型的访问”。

using VBA = Microsoft.Vbe.Interop;
using Excel = Microsoft.Office.Interop.Excel;

private void ReadExcel()
{
    string filePath = @"C:\temp\Macro.xlsm";

    Microsoft.Office.Interop.Excel.Application appExcel = null;
    Microsoft.Office.Interop.Excel.Workbooks workbooks = null;
    Microsoft.Office.Interop.Excel.Workbook workbook = null;

    object oMiss = System.Reflection.Missing.Value;

    appExcel = new Microsoft.Office.Interop.Excel.Application();
    appExcel.DisplayAlerts = true;
    appExcel.AutomationSecurity = Microsoft.Office.Core.MsoAutomationSecurity.msoAutomationSecurityByUI;
    // Make the excel visible
    appExcel.Visible = true;
    workbooks = appExcel.Workbooks;
    workbook = workbooks.Open(filePath, oMiss,
                              oMiss, oMiss,
                              oMiss, oMiss,
                              oMiss, oMiss,
                              oMiss, oMiss,
                              oMiss, oMiss,
                              oMiss, oMiss,
                              oMiss);

    if (workbook.HasVBProject)  // Has macros
    {
        try
        {
            // Show "Microsoft Excel Security Notice" prompt
            var project = workbook.VBProject;
        }
        catch (System.Runtime.InteropServices.COMException comex)
        {
            // Macro is enabled.
        }
    }

    workbook.Close(true, oMiss, oMiss);

    System.Runtime.InteropServices.Marshal.ReleaseComObject(workbook);
    workbook = null;
    System.Runtime.InteropServices.Marshal.ReleaseComObject(workbooks);
    workbooks = null;
    appExcel.Quit();
    System.Runtime.InteropServices.Marshal.ReleaseComObject(appExcel);
    appExcel = null;
}