使用 C#，如果事件处理程序无法加载程序集依赖项，如何停止执行 XLL 函数？

问：

我有一个 C# XLL（Excel 加载项），它（除其他外）使用第三方程序集（在运行时加载）从数据库中获取数据。在正常情况下，我使用 ResolveEventHandler 捕获解析程序并手动加载所需的程序集及其依赖项，如下所示：

private static Assembly AssemblyResolve(object sender, ResolveEventArgs args)
{ // This is an event handler for catching missing assemblies at runtime - designed to find and load the SIMExporterEbmlImport assembly and its dependencies
    // Assume a fixed path for where the assembly is located (can update this later to look in multiple versions if needed)
    // Should also add a switch block to only look for expected dependencies in this location,
    // and throw a helpful error if some unexpected dependency is missing.
    string dependentAssemblyName = new AssemblyName(args.Name).Name;
    string dependentAssemblyLocation = "C:\\ProgramData\\EB Bridging Tools\\SimExporter\\" + dependentAssemblyName + ".dll";


    // Try to load (will end up back here if lower dependencies are not met)
    try
    {
        return Assembly.LoadFile(dependentAssemblyLocation);
    }
    catch
    {
        MessageBox.Show(dependentAssemblyName + ".dll is missing. Please ensure it is installed to" + Common.nl
           + "C:\\ProgramData\\EB Bridging Tools\\SimExporter", "DataTool - Get EB Data", MessageBoxButtons.OK, MessageBoxIcon.Error);
        return null;
    }
}

catch 块是我第一次尝试处理用户机器根本没有所需的组件（或者它可能在错误的位置）的情况。我的问题是：阻止需要触发事件处理程序的最终调用方法的最佳方法是什么，即不要杀死我的整个 XLL 运行，而只是中止调用任何需要缺失程序集的方法？