在自动化模式下Excel does not load add-ins by default。 Excel使用条件加载项编译时加载加载项。为了使加载项在自动化模式下工作,应该强制Excel加载它,然后根据该加载项加载任何工作簿。下面我提供了来自我的真实项目(有些版本)的代码示例,它用JScript实现了这个加载顺序。评论解释步骤。
function run_excel() {
dbg_log("run_excel");
g_xla_addin = null;
g_xla = null;
try {
g_add_ins = get_excel_app().AddIns;
dbg_log("finding add_in.xlam");
//Searching for the installed add-in like Application.COMAddIns("WMExcelAddin1")
g_xla_addin = find_addin(g_add_ins, "add_in.xlam");
} catch(v_err) {
throw new error(
"xla_loading"
, CR_xla_loading
, 'Unexpected error occurred while determining if add_in.xlam is installed.'
, v_err
);
}
if (g_xla_addin == null) throw new error(
"xla_loading"
, CR_xla_not_installed
, "MS Excel addin is not installed."
);
try {
dbg_log("opening add_in.xlam");
//In the example, the add-in has the name of its workbook
try { g_xla = g_excel.Workbooks(g_xla_addin.Name); } catch(e) {}
if (g_xla == null) {
g_excel.AutomationSecurity = 1; // 1 == msoAutomationSecurityLow
//Loading the add-in. The add-in also handles `OpenWorkbook` at this time.
g_xla = g_excel.Workbooks.Open(
g_xla_addin.FullName //FileName
, 2 //UpdateLinks
, true //ReadOnly
, null //Format
, null //Password
, null //WriteResPassword
, true //IgnoreReadOnlyRecommended: not display the read-only recommended message
, 2 //Origin: xlWindows
, null //Delimiter
, null //Editable
, null //Notify
, null //Converter
, false //AddToMru: don't add this workbook to the list of recently used files
, true //Local: saves files against the language of Microsoft Excel.
, 0 //CorruptLoad: xlNormalLoad
);
hide_excel(); //To speed up and not interfere with user actions
}
} catch(v_err) {
throw new error(
"xla_loading"
, CR_xla_loading
, 'Unexpected error occurred while loading add_in.xlam:\n'
, v_err
);
}
//Now the Add-In is loaded, so the VBA engine knows its API, and the workbook referencing to it are loaded fine.
try {
g_sig_cat_wbk = g_excel.Workbooks.Open(
g_sig_cat_fn //FileName
, 2 //UpdateLinks
, true //ReadOnly
, null //Format
, null //Password
, null //WriteResPassword
, true //IgnoreReadOnlyRecommended: not display the read-only recommended message
, 2 //Origin: xlWindows
, null //Delimiter
, null //Editable
, null //Notify
, null //Converter
, false //AddToMru: don't add this workbook to the list of recently used files
, false //Local: saves files against the language of Microsoft Excel.
, 0 //CorruptLoad: xlNormalLoad
);
//Calling on the loaded workbook the target macro from the loaded add_in.xlam
vba_ret(g_excel.Run(g_xla_addin.Name+"!my_addin.prepare_sig_import", g_sig_cat_wbk.Name));
} catch(v_err) {
throw new error(
"sig_cat_loading"
, CR_sig_cat_loading
, 'Error occured while loading catalog of signals:\n'
, v_err
);
}
finally {
g_sig_cat_wbk.Close(false);
g_sig_cat_wbk = null;
}
dbg_log("run_excel done");
}
你是如何将你的类和方法暴露给VBA的? [这样的东西?](http://davecra.com/2013/02/01/how-to-expose-methods-in-your-vsto-add-in/) – 2014-10-07 08:45:12
[vba4all](http:// stackoverflow .com/users/2140173/vba4all),是的 - 正如您的链接中所述。 (尽管在VB.NET \t中,而不是在C#中)。 – DrMarbuse 2014-10-07 08:50:27
你有没有在vba项目中设置你的插件的参考? – ZAT 2014-10-07 09:00:40