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DataPRO/Modules/DatabaseImporter/DatabaseImport/Classes/TestObject/TestObjectTemplateCollection.cs

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+using System;
+using System.Windows;
+
+namespace DatabaseImport
+{
+    public class TestObjectTemplateCollection //: BasePropertyChanged
+    {
+        private static volatile TestObjectTemplateCollection _testObjectCollection;
+        public static TestObjectTemplateCollection TemplateCollection
+        {
+            get
+            {
+                if (null == _testObjectCollection)
+                {
+                    _testObjectCollection = new TestObjectTemplateCollection();
+                }
+                return _testObjectCollection;
+            }
+        }
+
+        public void ReloadAll(bool loadSubComponents)
+        {
+            //UnloadAll();
+            //if (loadSubComponents)
+            //{
+            //    (App.Current as App).IsoDb.RefreshAllData();
+            //    DataModel.CustomChannelList.List.ReloadAll();
+            //}
+            //Reload();
+        }
+        private static volatile TestObjectTemplate _sysBuiltTestObjectTemplate;
+        public TestObjectTemplate SysBuiltTestObjectTemplate => _sysBuiltTestObjectTemplate;
+
+        public TestObjectTemplate GetTemplate(string templateId)
+        {
+            var db = ((App)Application.Current).IsoDb;
+            var isoTemplate = ISO.TestObjectTemplate.GetTemplate(ref db, templateId);
+            return null != isoTemplate ? new TestObjectTemplate(isoTemplate, ref db) : null;
+        }
+        /// <summary>
+        /// deletes all test objects
+        /// originally created so TDM imports could clear all tables
+        /// </summary>
+        public static void DeleteAll()
+        {
+            //if (TemplateCollection._bUnloaded) { Reload(); }
+            _testObjectCollection.DeleteAllTemplates();
+            _testObjectCollection = new TestObjectTemplateCollection();
+            TemplateCollection.DeleteAllTemplates();
+            //TemplateCollection._templates.Clear();            
+        }
+        private void DeleteAllTemplates()
+        {
+            try
+            {
+                //if (_bUnloaded) { Reload(); }
+                ISO.TestObjectTemplate.DeleteAllTemplates();
+            }
+            catch (Exception) { /*APILogger.Log("failed to delete all templates"); */}
+        }
+    }
+}