Add DwgExportManager: batch DWG/DXF export to PDF/PNG

.gitignore

@@ -7,6 +7,7 @@ x86/
 [Oo]bj/
 Binaries/
 Standalone/
+publish/
 
 # Visual Studio
 .vs/
@@ -43,3 +44,6 @@ Thumbs.db
 ehthumbs.db
 Desktop.ini
 
+# VS project upgrade/migration reports (auto-generated)
+UpgradeLog*.htm
+

DrawingListUC/AcadComUtils.cs

@@ -16,7 +16,7 @@
 
 namespace DrawingListUC
 {
-    internal static class AcadComUtils
+    public static class AcadComUtils
     {
         // -------------------- PUBLIC API --------------------
 

DwgExportManager/AcadSession.cs

@@ -0,0 +1,191 @@
+using System;
+using System.Reflection;
+using System.Runtime.InteropServices;
+using System.Threading;
+using DrawingListUC;
+
+namespace DwgExportManager
+{
+    // Dieu khien AutoCAD qua COM (attach vao instance dang chay hoac tao moi),
+    // mo/kich hoat ban ve va chuyen tab Model/Layout.
+    // Tai su dung AcadComUtils - nghiep vu ket noi AutoCAD da co san trong ScriptPro (DrawingListUC).
+    public class AcadSession
+    {
+        // HRESULT AutoCAD/COM tra ve khi ung dung dang ban (dang hien dialog, dang ve lai man hinh...)
+        // ScriptUI/DrawingListUC khong gap loi nay vi no chay tren luong UI (STA) co dang ky
+        // IOleMessageFilter (xem MessageFilter.cs) de COM tu dong retry. DwgExportManager goi COM
+        // ca tu luong nen (BackgroundWorker, MTA) - IOleMessageFilter KHONG co tac dung voi MTA,
+        // nen phai tu bat loi va retry thu cong o day.
+        private const int RPC_E_CALL_REJECTED = unchecked((int)0x80010001);
+        private const int RPC_E_SERVERCALL_RETRYLATER = unchecked((int)0x8001010A);
+        private const int MaxRetries = 60;      // toi da ~15s (60 x 250ms)
+        private const int RetryDelayMs = 250;
+
+        private object _acadApp;
+
+        // Goi InvokeMember co tu dong retry khi AutoCAD bao "busy"
+        private static object Invoke(object target, string name, BindingFlags flags, object[] args)
+        {
+            int attempt = 0;
+            while (true)
+            {
+                try
+                {
+                    return target.GetType().InvokeMember(name, flags, null, target, args);
+                }
+                catch (COMException ex) when (
+                    (ex.HResult == RPC_E_CALL_REJECTED || ex.HResult == RPC_E_SERVERCALL_RETRYLATER) &&
+                    attempt < MaxRetries)
+                {
+                    attempt++;
+                    Thread.Sleep(RetryDelayMs);
+                }
+            }
+        }
+
+        public object EnsureAcadRunning()
+        {
+            if (_acadApp != null)
+            {
+                try
+                {
+                    // Kiem tra COM object con song khong (AutoCAD co the da bi dong tay)
+                    Invoke(_acadApp, "Visible", BindingFlags.GetProperty, null);
+                    return _acadApp;
+                }
+                catch
+                {
+                    _acadApp = null;
+                }
+            }
+
+            _acadApp = AcadComUtils.TryGetAnyRunningAcad();
+            if (_acadApp == null)
+                _acadApp = AcadComUtils.CreateLatestAutoCADInstance();
+
+            AcadComUtils.SetVisible(_acadApp, true);
+            return _acadApp;
+        }
+
+        // Mo file (hoac kich hoat lai neu da mo san) va tra ve AcadDocument (COM object)
+        public object OpenDocument(string dwgPath)
+        {
+            object acadApp = EnsureAcadRunning();
+
+            object documents = Invoke(acadApp, "Documents", BindingFlags.GetProperty, null);
+
+            int count = (int)Invoke(documents, "Count", BindingFlags.GetProperty, null);
+
+            for (int i = 0; i < count; i++)
+            {
+                object existing = Invoke(documents, "Item", BindingFlags.InvokeMethod, new object[] { i });
+
+                string fullName = (string)Invoke(existing, "FullName", BindingFlags.GetProperty, null);
+
+                if (string.Equals(fullName, dwgPath, StringComparison.OrdinalIgnoreCase))
+                {
+                    ActivateDocument(existing);
+                    return existing;
+                }
+            }
+
+            object opened = Invoke(documents, "Open", BindingFlags.InvokeMethod,
+                new object[] { dwgPath, false, " " });
+
+            // Cho AutoCAD ve xong ban ve vua mo truoc khi goi tiep lenh COM khac,
+            // giam kha nang gap "application is busy" ngay sau khi Open.
+            Thread.Sleep(800);
+
+            ActivateDocument(opened);
+            return opened;
+        }
+
+        public void ActivateDocument(object document)
+        {
+            try
+            {
+                Invoke(document, "Activate", BindingFlags.InvokeMethod, null);
+            }
+            catch { }
+
+            try
+            {
+                AcadComUtils.SetVisible(_acadApp, true);
+            }
+            catch { }
+        }
+
+        // Chuyen sang tab Model hoac Layout co ten tuong ung
+        public void SetActiveTab(object document, string tabName)
+        {
+            if (string.IsNullOrEmpty(tabName) ||
+                string.Equals(tabName, "Model", StringComparison.OrdinalIgnoreCase))
+                return;
+
+            try
+            {
+                object layouts = Invoke(document, "Layouts", BindingFlags.GetProperty, null);
+
+                object layout = Invoke(layouts, "Item", BindingFlags.InvokeMethod, new object[] { tabName });
+
+                Invoke(document, "ActiveLayout", BindingFlags.SetProperty, new object[] { layout });
+
+                // Cho AutoCAD chuyen tab xong truoc khi goi tiep lenh COM khac
+                Thread.Sleep(300);
+            }
+            catch
+            {
+                // Khong tim thay layout (co the da bi doi ten) - giu nguyen tab hien tai
+            }
+        }
+
+        public void SetVariable(object document, string varName, object value)
+        {
+            try
+            {
+                Invoke(document, "SetVariable", BindingFlags.InvokeMethod, new object[] { varName, value });
+            }
+            catch { }
+        }
+
+        public int GetIntVariable(object document, string varName, int defaultValue)
+        {
+            try
+            {
+                object result = Invoke(document, "GetVariable", BindingFlags.InvokeMethod, new object[] { varName });
+                return Convert.ToInt32(result);
+            }
+            catch
+            {
+                return defaultValue;
+            }
+        }
+
+        public string GetStringVariable(object document, string varName, string defaultValue)
+        {
+            try
+            {
+                object result = Invoke(document, "GetVariable", BindingFlags.InvokeMethod, new object[] { varName });
+                return result?.ToString() ?? defaultValue;
+            }
+            catch
+            {
+                return defaultValue;
+            }
+        }
+
+        public void SendCommand(object document, string commandText)
+        {
+            Invoke(document, "SendCommand", BindingFlags.InvokeMethod, new object[] { commandText });
+        }
+
+        public void CloseDocument(object document)
+        {
+            try
+            {
+                Invoke(document, "Close", BindingFlags.InvokeMethod, new object[] { false, "" });
+            }
+            catch { }
+        }
+    }
+}

DwgExportManager/App.xaml

@@ -0,0 +1,7 @@
+<Application x:Class="DwgExportManager.App"
+             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+             StartupUri="MainWindow.xaml">
+    <Application.Resources>
+    </Application.Resources>
+</Application>

DwgExportManager/App.xaml.cs

@@ -0,0 +1,8 @@
+using System.Windows;
+
+namespace DwgExportManager
+{
+    public partial class App : Application
+    {
+    }
+}

DwgExportManager/DwgExportManager.csproj

@@ -0,0 +1,68 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net8.0-windows</TargetFramework>
+    <UseWPF>true</UseWPF>
+    <UseWindowsForms>true</UseWindowsForms>
+    <OutputType>WinExe</OutputType>
+    <RootNamespace>DwgExportManager</RootNamespace>
+    <AssemblyName>DwgExportManager</AssemblyName>
+    <LangVersion>latest</LangVersion>
+    <Nullable>disable</Nullable>
+    <ImplicitUsings>disable</ImplicitUsings>
+    <Platforms>AnyCPU;x64</Platforms>
+    <ApplicationHighDpiMode>PerMonitorV2</ApplicationHighDpiMode>
+    <ForceDesignerDpiUnaware>true</ForceDesignerDpiUnaware>
+  </PropertyGroup>
+
+  <PropertyGroup>
+    <!-- Assembly Information -->
+    <AssemblyTitle>DwgExportManager</AssemblyTitle>
+    <Company></Company>
+    <Product>DwgExportManager</Product>
+    <Copyright>Copyright © 2026</Copyright>
+    <AssemblyVersion>1.0.0.0</AssemblyVersion>
+    <FileVersion>1.0.0.0</FileVersion>
+  </PropertyGroup>
+
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|AnyCPU'">
+    <DefineConstants>DEBUG;TRACE</DefineConstants>
+    <OutputPath>bin\Debug\</OutputPath>
+    <DebugType>full</DebugType>
+    <DebugSymbols>true</DebugSymbols>
+  </PropertyGroup>
+
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|AnyCPU'">
+    <DefineConstants>TRACE</DefineConstants>
+    <OutputPath>$(SolutionDir)Binaries\</OutputPath>
+    <DebugType>pdbonly</DebugType>
+    <Optimize>true</Optimize>
+  </PropertyGroup>
+
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
+    <DefineConstants>DEBUG;TRACE</DefineConstants>
+    <OutputPath>$(SolutionDir)Binaries\x64\Debug\</OutputPath>
+    <DebugType>full</DebugType>
+    <DebugSymbols>true</DebugSymbols>
+    <PlatformTarget>x64</PlatformTarget>
+  </PropertyGroup>
+
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
+    <DefineConstants>TRACE</DefineConstants>
+    <OutputPath>$(SolutionDir)Binaries\x64\Release\</OutputPath>
+    <DebugType>pdbonly</DebugType>
+    <Optimize>true</Optimize>
+    <PlatformTarget>x64</PlatformTarget>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <!-- Tai su dung AcadComUtils (nghiep vu ket noi AutoCAD qua COM) da co san trong ScriptPro -->
+    <ProjectReference Include="..\DrawingListUC\DrawingListUC.csproj" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <!-- Doc nhanh danh sach Layout tu file DWG/DXF ma khong can mo AutoCAD -->
+    <PackageReference Include="ACadSharp" Version="3.7.1" />
+  </ItemGroup>
+
+</Project>