动态加载及调用程序集
时间:2022-05-11 07:59
static DbCmd() { AppDomain currentDomain = AppDomain.CurrentDomain; currentDomain.AssemblyResolve += new ResolveEventHandler(MyResolveEventHandler); } static Assembly MyResolveEventHandler(object sender, ResolveEventArgs args) { string strFielName = args.Name.Split(‘,‘)[0]; if (strFielName.ToLower().EndsWith(".resources")) //不处理资源文件 return null; ExtMethod.WriteLog("DbCmd 程序集获取失败,准备动态加载:" + args.Name); string parentRoot = AppDomain.CurrentDomain.BaseDirectory; string dllName = GetDllOrExeName(parentRoot, strFielName); if (dllName == "") { parentRoot = System.IO.Path.GetDirectoryName(AppDomain.CurrentDomain.BaseDirectory.TrimEnd(‘\\‘)); dllName = GetDllOrExeName(parentRoot, strFielName); } if (dllName != null) { ExtMethod.WriteLog("DbCmd 程序集开始加载文件:" + dllName); return Assembly.LoadFile(dllName); } else { ExtMethod.WriteLog("DbCmd 程序集获取失败:找不到文件" + strFielName); } return null; } ////// 获取指定名称的dll路径 /// /// 目录路径 /// 程序集名称 ///返回路径名称 static string GetDllOrExeName(string _DirectoryName, string _assemablName) { string filter = _assemablName + ".???"; var subFiles = System.IO.Directory.GetFiles(_DirectoryName, filter, System.IO.SearchOption.AllDirectories); string dllName = ""; foreach (var item in subFiles) //搜索下级目录 { if (item.EndsWith(".dll", StringComparison.OrdinalIgnoreCase)) { dllName = item; break; } if (item.EndsWith(".exe", StringComparison.OrdinalIgnoreCase)) { dllName = item; break; } } return dllName; }