Lots of updates

PWAPPv2/Source/Database/DatabaseConnection.cs

@@ -0,0 +1,115 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using Microsoft.Data.SqlClient;
+using MySqlConnector;
+
+namespace PWAPPv2.Source.Database
+{
+    class DatabaseConnection
+    {
+
+        private MySqlConnection Connection;
+        private string SqlString;
+        DatabaseConfig Config;
+
+        public DatabaseConnection(DatabaseConfig config)
+        {
+            Config = config;
+            SqlString = "server=" + config.host + ";Uid=" + config.user + ";database=" + config.database + ";Pwd=" + config.password;
+            Connection = new MySqlConnection(SqlString);
+        }
+
+        public void Connect()
+        {
+            try
+            {
+                Connection.Open();
+            }
+            catch(Exception)
+            {
+                throw new DatabaseConnectionException();
+            }
+        }
+
+        public List<string> QueryDatabase(string query)
+        {
+            try
+            {
+                Connection.Open();
+            }
+            catch (Exception)
+            {
+                throw new CouldNotOpenConnectionException();
+            }
+
+            MySqlCommand Command = new MySqlCommand(query, Connection);
+            MySqlDataReader reader;
+            try
+            {
+                reader = Command.ExecuteReader();
+            }
+            catch (Exception)
+            {
+                Connection.Close();
+                throw new ReaderException();
+            }
+            List<string> result = new List<string>();
+
+
+            while (reader.Read())
+            {
+                int n = reader.VisibleFieldCount;
+                for (int i = 0; i < reader.VisibleFieldCount; i++)
+                {
+                    var type = reader.GetFieldType(i);
+                    if (type.Name == "Int64")
+                    {
+                        result.Add(reader.GetInt64(i).ToString());
+                    }
+                    if (type.Name == "Int32")
+                    {
+                        result.Add(reader.GetInt32(i).ToString());
+                    }
+                    if (type.Name == "String")
+                    {
+                        result.Add(reader.GetString(i));
+
+                    }
+                    if (type.Name == "Byte")
+                    {
+                        result.Add(reader.GetByte(i).ToString());
+                    }
+                    if (type.Name == "DateTime")
+                    {
+                        result.Add(reader.GetDateTime(i).ToString());
+                    }
+                }
+            }
+            Connection.Close();
+
+            return result;
+        }
+
+    }
+
+    class DatabaseConfigurationException : Exception
+    {
+
+    }
+    
+    class DatabaseConnectionException : Exception
+    { }
+
+    class CouldNotOpenConnectionException : Exception
+    {
+
+    }
+
+    class ReaderException : Exception
+    {
+
+    }
+}