Init

- aggiunto un po di tutto comeil progetto del prof

SeniorAssistant/Extensions/DataConnectionExtension.cs

@@ -0,0 +1,41 @@
+using LinqToDB;
+using LinqToDB.Data;
+using Microsoft.Data.Sqlite;
+using System;
+using System.Threading.Tasks;
+
+namespace SeniorAssistant.Extensions
+{
+    public static class DataConnectionExtensions
+    {
+        public static void CreateTableIfNotExists<T>(this DataConnection db) => RunIgnoringException(() => db.CreateTable<T>());
+
+        public static async Task CreateTableIfNotExistsAsync<T>(this DataConnection db) => await RunIgnoringExceptionAsync(async () => await db.CreateTableAsync<T>());
+
+        static void RunIgnoringException(Action action)
+        {
+            if (action == null) return;
+
+            try
+            {
+                action.Invoke();
+            }
+            catch (SqliteException)
+            {
+                // Ignore Exception
+            }
+        }
+
+        static async Task RunIgnoringExceptionAsync(Func<Task> action)
+        {
+            if (action == null) await Task.Yield();
+
+            try
+            {
+                await action.Invoke();
+            }
+            catch
+            { }
+        }
+    }
+}