How to Fix \'ReplicationManager Type Initializer Failed\' Error When Connecting to MySQL from an Android App?

Connection Error with MySql.Data.MySqlClient on Android App

When attempting to open a connection to a MySQL database from an Android app using MySql.Data.MySqlClient, an exception is thrown, indicating that the type initializer for 'MySql.Data.MySqlClient.Replication.ReplicationManager' failed.

Error Details:

System.TypeInitializationException: The type initializer for 'MySql.Data.MySqlClient.Replication.ReplicationManager' threw an exception.

Code Snippet:

<code class="csharp">MySqlConnection _Conn;

public void Conectar()
{
    new I18N.West.CP1250();

    string SC;

    SC = "server = XXX; Port = 3306; database = XXX; user id = XXX; password = XXX; charset = utf8";

    _Conn = new MySqlConnection(SC);

    _Conn.Open();
}</code>

Solution:

The error is related to a known incompatibility between MySql.Data.MySqlClient and certain versions of the Android OS. To resolve the issue, switch to using the MySqlConnector package instead of MySql.Data:

1. Uninstall MySql.Data:

   <code class="bash">PM> Uninstall-Package MySql.Data</code>

2. Install MySqlConnector:

   <code class="bash">PM> Install-Package MySqlConnector</code>

3. Use MySqlConnector in Your Code:
   Replace the existing MySql.Data references with MySqlConnector:

   <code class="csharp">using MySqlConnector; // Replace using MySql.Data.MySqlClient with this
   
   ...
   
   // Replace with the appropriate connection string
   var connectionString = "server=YOUR_SERVER;port=YOUR_PORT;database=YOUR_DATABASE;user id=YOUR_USER_ID;password=YOUR_PASSWORD";
   
   using var connection = new MySqlConnection(connectionString);</code>

By following these steps, you can establish a successful connection to a MySQL database from your Android app using MySqlConnector.

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