Mise en place de la structure définitive du CRUD et modification de la page principale avec les datas

Helpers/DbHelper.cs

@@ -0,0 +1,36 @@
+using Microsoft.Data.SqlClient;
+
+public static class DbHelper
+{
+    public static int ExecuteNonQuery(string query, Dictionary<string, object> parameters)
+    {
+        using var connection = new SqlConnection(AppSettings.GetConnectionString("DefaultConnection"));
+        connection.Open();
+
+        using var command = new SqlCommand(query, connection);
+        foreach (var param in parameters)
+            command.Parameters.AddWithValue(param.Key, param.Value ?? DBNull.Value);
+
+        return command.ExecuteNonQuery();
+    }
+
+    public static List<Dictionary<string, object>> ExecuteQuery(string query)
+    {
+        using var connection = new SqlConnection(AppSettings.GetConnectionString("DefaultConnection"));
+        connection.Open();
+
+        using var command = new SqlCommand(query, connection);
+        using var reader = command.ExecuteReader();
+
+        var result = new List<Dictionary<string, object>>();
+        while (reader.Read())
+        {
+            var row = new Dictionary<string, object>();
+            for (int i = 0; i < reader.FieldCount; i++)
+                row[reader.GetName(i)] = reader.GetValue(i);
+            result.Add(row);
+        }
+
+        return result;
+    }
+}