C# Database Connection Error

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C#

database

Hey guys,

i´m new to visual c# and trying to connect my application with my database. I have installed a local Zend Server with PHPMyAdmin. My PHP version is 5.3.9 and MySqlConnector was added to my Project successful. After executing the Code below I get following Error- Message:

Ein Verbindungsversuch ist fehlgeschlagen, da die Gegenstelle nach einer bestimmten Zeitspanne nicht richtig reagiert hat, oder die hergestellte Verbindung war fehlerhaft, da der verbundene Host nicht reagiert hat

In English:

A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond



My Code:

//Connection String with Server, Database, User and Password
           string connection_string = "SERVER=127.0.0.1;DATABASE=test;UID=*********;PASSWORD=********;PORT=3306";
           //Set Connection configs
           MySqlConnection connection = new MySqlConnection(connection_string);

           try
           {
               //Open Connection
               connection.Open();
               textbox1.AppendText("Connected Server: localhost. \nConnected Database: test");


               MySqlCommand command = connection.CreateCommand();
               command.CommandText = "SELECT * From persons";
               MySqlDataReader reader = command.ExecuteReader();
               while (reader.Read())
               {
                   textbox1.AppendText("\n\n"+reader["text"].ToString());
               }
               reader.Close();
               connection.Close();

           }
           catch (Exception ex)
           {
               textbox1.AppendText(ex.Message);

           }

SQL- Querys works fine in cmd and this php- script runs without any error to:

<?php $con = mysql_connect("localhost","*******","*******");
if (!$con)
  {
  die('Could not connect: ' . mysql_error());
  }

mysql_select_db("test", $con);

$result = mysql_query("SELECT * FROM personen"); 

$row = mysql_fetch_array($result);


echo "<pre>";
var_dump($row);


mysql_close($con); ?>

Do you have any suggestions for solving my problem?
Thanks for your help!:)