添加项目文件。

Mstn.Toolkit/Helpers/ItemTypesHelper.cs

@@ -0,0 +1,144 @@
+using System.Collections.Generic;
+
+using Bentley.DgnPlatformNET;
+using Bentley.DgnPlatformNET.DgnEC;
+using Bentley.DgnPlatformNET.Elements;
+using Bentley.ECObjects.Instance;
+using Bentley.MstnPlatformNET;
+
+namespace Mstn.Toolkit.Helpers
+{
+    public class ItemTypesHelper
+    {
+        /// <summary>
+        /// ItemTypeLibrary的获取或创建，表现为一个分组的集合
+        /// </summary>
+        /// <param name="libName"></param>
+        /// <returns></returns>
+        public static ItemTypeLibrary GetOrCreateItemTypeLibrary(string libName)
+        {
+            var dgnFile = Session.Instance.GetActiveDgnFile();
+            ItemTypeLibrary itemTypeLibrary = ItemTypeLibrary.FindByName(libName, dgnFile);
+            if (itemTypeLibrary != null)
+            {
+                return itemTypeLibrary;
+            }
+            return ItemTypeLibrary.Create(libName, dgnFile);
+        }
+        /// <summary>
+        /// 通过名称获取ItemTypes
+        /// </summary>
+        /// <param name="libName"></param>
+        /// <returns></returns>
+        public static IEnumerable<ItemType> GetItemTypes(string libName)
+        {
+            ItemTypeLibrary itemTypeLibrary = GetOrCreateItemTypeLibrary(libName);
+            return itemTypeLibrary.ItemTypes;
+        }
+        /// <summary>
+        /// 获取当前DGN文件中的所有ItemTypeLibrary
+        /// </summary>
+        /// <returns></returns>
+        public static IList<ItemTypeLibrary> GetItemTypeLibraries()
+        {
+            DgnFile dgnFile = Session.Instance.GetActiveDgnFile();
+            if (dgnFile != null)
+            {
+                return ItemTypeLibrary.PopulateListFromFile(dgnFile);
+            }
+            return null;
+        }
+        /// <summary>
+        /// 获取ItemType，包含多个CustomProperty，表现为属性分组
+        /// </summary>
+        /// <param name="itemLibName"></param>
+        /// <param name="itemTypeName"></param>
+        /// <returns></returns>
+        public static ItemType GetOrCreateItemType(string itemLibName, string itemTypeName)
+        {
+            ItemTypeLibrary itemTypeLibrary = GetOrCreateItemTypeLibrary(itemLibName);
+            ItemType itemType = itemTypeLibrary.GetItemTypeByName(itemTypeName);
+            if (itemType != null)
+            {
+                return itemType;
+            }
+            return itemTypeLibrary.AddItemType(itemTypeName);
+        }
+
+        public static bool AddPropertyToItemType(ItemType itemType, string propertyName, CustomProperty.TypeKind kind, WorkingUnit unit, object defaultValue)
+        {
+            CustomProperty property = itemType.AddProperty(propertyName);
+            property.Type = kind;
+            property.DefaultValue = defaultValue;
+            if (property.SupportsUnits)
+            {
+                property.Units = new DgnECUnit(unit); // 可以根据需要设置单位
+            }
+            return itemType.Library.Write(); // 确保更改被写入到库中
+        }
+        /// <summary>
+        /// 获取ItemType的所有CustomProperty
+        /// </summary>
+        /// <param name="itemType"></param>
+        /// <returns></returns>
+        public static List<CustomProperty> GetProperties(ItemType itemType)
+        {
+            List<CustomProperty> properties = new List<CustomProperty>();
+            var props = itemType.GetEnumerator();
+            while (props.MoveNext())
+            {
+                CustomProperty prop = props.Current;
+                if (prop != null)
+                {
+                    properties.Add(prop);
+                }
+            }
+            return properties;
+        }
+        /// <summary>
+        /// 添加ItemType到Model
+        /// </summary>
+        /// <param name="itemLibName"></param>
+        /// <param name="itemTypeName"></param>
+        public static void AttachItemTypeToModel(string itemLibName, string itemTypeName)
+        {
+            DgnModel dgnModel = Session.Instance.GetActiveDgnModel();//获取当前活动的模型
+            CustomItemHost host = new CustomItemHost(dgnModel);//声明元素的CustomItemHost
+            DgnFile dgnFile = Session.Instance.GetActiveDgnFile();
+            ItemTypeLibrary ITL = ItemTypeLibrary.FindByName(itemLibName, dgnFile);
+            ItemType itemtype = ITL.GetItemTypeByName(itemTypeName);
+            IDgnECInstance ecIns = host.GetCustomItem(itemLibName, itemTypeName);
+            if (null == ecIns)
+                ecIns = host.ApplyCustomItem(itemtype, true); //对CustomItemHost应用ItemType得到EC实例
+            CustomProperty myProp = itemtype.GetPropertyByName("项目名称");
+
+            ecIns.SetString(myProp.InternalName, "属性值");
+            var s = ecIns.WriteChanges();
+        }
+        /// <summary>
+        /// 挂接ItemType到元素
+        /// </summary>
+        /// <param name="elem"></param>
+        /// <param name="itemLibName"></param>
+        /// <param name="itemTypeName"></param>
+        public static void AttachItemTypeToElement(Element elem, string itemLibName, string itemTypeName)
+        {
+            DgnFile dgnFile = Session.Instance.GetActiveDgnFile();//获得当前激活的文件
+            DgnModel dgnModel = Session.Instance.GetActiveDgnModel();
+            //根据声明名称获取对应的ItemType
+            ItemType itemType = GetOrCreateItemType(itemLibName, itemTypeName);
+
+            CustomItemHost host = new CustomItemHost(elem, true);//声明元素的CustomItemHost
+            //实例化
+            IDgnECInstance item = host.ApplyCustomItem(itemType, true);//对CustomItemHost添加ItemType得到EC实例
+
+            //EditParameterDefinitions defs = EditParameterDefinitions.GetForModel(dgnModel);//获得模型中的参数定义
+            //DgnECInstanceEnabler enabler = DgnECManager.Manager.ObtainInstanceEnabler(dgnFile, itemType.ECClass);//获得文件中使用指定EC类的EC实例
+            //if (null != enabler && enabler.SupportsCreateInstanceOnElement)//判断是否是否支持对元素挂接EC实例
+            //    defs.SetDomainParameters(enabler.SharedWipInstance);//对参数定义设置域参数
+
+            item.ScheduleChanges(elem);//对元素更新ItemType信息
+            elem.ReplaceInModel(elem);
+        }
+    }
+}