skyline TEP学习心得（1）：工程树ProjectTree操作两例

环境TEP6.1，C#

1.查找或创建组，查找不到则创建，返回ItemID

第二个参数是查找的组的路径，格式为：A\B\C

        /// <summary>

        /// 查找或创建组（查找不到则创建）

        /// </summary>

        /// <param name="tSGWorld"></param>

        /// <param name="tGroupPath">查找路径，格式：A\B\C</param>

        /// <returns></returns>

        public static int FindAndCreateGroup(ISGWorld61 tSGWorld, string tGroupPath)

        {

            if (tGroupPath.EndsWith("\\") == false)

            {

                tGroupPath += "\\";

            }



            int tItemID = tSGWorld.ProjectTree.FindItem(tGroupPath);

            if (tItemID == 0)

            {

                string tParentPath = tGroupPath.Substring(0, tGroupPath.LastIndexOf("\\"));

                string tGroupName = tParentPath.Substring(tParentPath.LastIndexOf("\\") + 1);

                int tItemIDParent = 0;



                if (tParentPath.IndexOf("\\") < 0)

                {

                    return tSGWorld.ProjectTree.CreateGroup(tParentPath, 0);

                }

                else

                {

                    tParentPath = tGroupPath.Substring(0, tParentPath.LastIndexOf("\\"));



                    tItemIDParent = FindAndCreateGroup(tSGWorld, tParentPath);

                }



                tItemID = tSGWorld.ProjectTree.CreateGroup(tGroupName, tItemIDParent);

            }



            return tItemID;

        }

2.在ProjectTree中找指定名称的图层的Layer

返回ILayer61对象

当从根节点找起，第二个参数为0，第三个参数为要找的图层名

        /// <summary>

        /// 在ProjectTree中找指定名称的图层的Layer

        /// </summary>

        /// <param name="tSGWorld"></param>

        /// <param name="tParentItemID"></param>

        /// <param name="tLayerName"></param>

        /// <returns></returns>

        public static ILayer61 FindLayerInProjectTree(ISGWorld61 tSGWorld, int tParentItemID, string tLayerName)

        {

            if (string.IsNullOrEmpty(tLayerName)) return null;



            int tItemID = tSGWorld.ProjectTree.GetNextItem(tParentItemID, ItemCode.CHILD);

            if (tItemID == 0) return null;

            while (tItemID != 0)

            {

                if (tSGWorld.ProjectTree.IsGroup(tItemID) == true)

                {

                    if (tSGWorld.ProjectTree.IsLayer(tItemID) == true)

                    {

                        if (tSGWorld.ProjectTree.GetItemName(tItemID) == tLayerName)

                        {

                            return tSGWorld.ProjectTree.GetLayer(tItemID);

                        }

                    }



                    ILayer61 tLayer = FindLayerInProjectTree(tSGWorld, tItemID, tLayerName);

                    if (tLayer != null)

                    {

                        return tLayer;

                    }



                }

                else

                {

                    if (tSGWorld.ProjectTree.IsLayer(tItemID) == true)

                    {

                        if (tSGWorld.ProjectTree.GetItemName(tItemID) == tLayerName)

                        {

                            return tSGWorld.ProjectTree.GetLayer(tItemID);

                        }

                    }

                }

                tItemID = tSGWorld.ProjectTree.GetNextItem(tItemID, ItemCode.NEXT);



            }



            return null;

        }