添加项目文件。

RevitLess/RevitContext.cs

@@ -0,0 +1,158 @@
+using System;
+using System.IO;
+using System.Linq;
+using System.Reflection;
+using Autodesk.Revit;
+using Autodesk.Revit.DB;
+
+namespace RevitLess
+{
+    /// <summary>
+    ///     Revit环境
+    /// </summary>
+    internal class RevitContext
+    {
+        /// <summary>
+        ///     使用此构造方法前需要调用 RevitContext.AddEnv();
+        /// </summary>
+        static RevitContext()
+        {
+            OnAssemblyResolve();
+        }
+
+        public event EventHandler<Product> InitFinished;
+
+        //用于判断当前类的实例是否存在
+        private static readonly object lockobj = new();
+
+        private static RevitContext _instance;
+
+        /// <summary>
+        ///     revit程序目录
+        /// </summary>
+        public static string RevitAppPath;
+        // 此路径为动态反射搜索路径 、 此路径可为任意路径（只要路径下有RevitNET 所需依赖项即可，完整依赖项可在 Naviswork 2016 下面找到）
+
+        private Product revitProduct;
+
+        /// <summary>
+        ///     Revit应用程序实例
+        /// </summary>
+        public Autodesk.Revit.ApplicationServices.Application Application => revitProduct?.Application;
+
+        /// <summary>
+        ///     自身静态类，单例，内存中只有一份
+        /// </summary>
+        public static RevitContext Instance
+        {
+            get
+            {
+                if (_instance == null)
+                {
+                    lock (lockobj)
+                    {
+                        _instance ??= new RevitContext();
+                    }
+                }
+
+                return _instance;
+            }
+        }
+
+        /// <summary>
+        ///     打开REVIT文件时的设置
+        /// </summary>
+        public OpenOptions OpenOptions { get; set; }
+
+        public void Exit()
+        {
+            revitProduct?.Exit();
+        }
+
+        public void InitRevitAppAndOpenFile()
+        {
+            InitFinished?.Invoke(this, revitProduct);
+        }
+
+        /// <summary>
+        ///     添加revit安装路径到环境变量以便加载相应的DLL
+        /// </summary>
+        /// <param name="revitPath">添加revit安装路径</param>
+        public static void OnAssemblyResolve(string revitPath = null)
+        {
+            if (revitPath != null)
+            {
+                RevitAppPath = revitPath;
+            }
+
+            AddEnvironmentPaths(RevitAppPath);
+            AppDomain.CurrentDomain.AssemblyResolve += CurrentDomain_AssemblyResolve;
+        }
+
+        /// <summary>
+        ///     打开文件
+        /// </summary>
+        /// <param name="filename"></param>
+        /// <returns></returns>
+        public Document OpenFile(string filename)
+        {
+            if (File.Exists(filename))
+            {
+                ModelPath model = new FilePath(filename);
+                return revitProduct.Application.OpenDocumentFile(model, OpenOptions);
+            }
+
+            throw new FileNotFoundException($"{filename}不存在。");
+        }
+
+        public void Run()
+        {
+            OpenOptions = new OpenOptions
+            {
+                Audit = true,
+                AllowOpeningLocalByWrongUser = false,
+                DetachFromCentralOption = DetachFromCentralOption.DetachAndDiscardWorksets //从中心模型分离
+            };
+            revitProduct = Product.GetInstalledProduct();
+            var clientApplicationId = new ClientApplicationId(Guid.NewGuid(), "RevitContext", "BIM");
+            revitProduct.SetPreferredLanguage(Autodesk.Revit.ApplicationServices.LanguageType.Chinese_Simplified);
+            revitProduct.Initialize_ForAutodeskInternalUseOnly(clientApplicationId, "I am authorized by Autodesk to use this UI-less functionality.");
+        }
+
+        /// <summary>
+        ///     添加环境变量
+        /// </summary>
+        /// <param name="paths">revit安装路径</param>
+        private static void AddEnvironmentPaths(params string[] paths)
+        {
+            string[] first =
+            {
+                Environment.GetEnvironmentVariable("PATH") ?? string.Empty
+            };
+            var value = string.Join(Path.PathSeparator.ToString(), first.Concat(paths));
+            Environment.SetEnvironmentVariable("PATH", value);
+        }
+
+        /// <summary>
+        ///     动态加载revit相关的dll
+        /// </summary>
+        /// <param name="sender"></param>
+        /// <param name="args"></param>
+        /// <returns></returns>
+        private static Assembly CurrentDomain_AssemblyResolve(object sender, ResolveEventArgs args)
+        {
+            var assemblyName = new AssemblyName(args.Name);
+            var text = $"{Path.Combine(RevitAppPath, assemblyName.Name)}.dll";
+            ////$字符将{0}占位直接用对象相关字段替换
+            //var file = string.Format("{0}.dll", System.IO.Path.Combine(item, assemblyName.Name));
+
+            if (File.Exists(text))
+            {
+                //Console.WriteLine($"加载Revit Dll路径:{text}");
+                return Assembly.LoadFrom(text);
+            }
+
+            return args.RequestingAssembly;
+        }
+    }
+}