Unable to connect to SQL

using System.Data.SqlClient;
Console.WriteLine("Database connector");
string connectionString = "Data Source=localhost,3306;Initial Catalog=testcon;User id=root;Password=~'!(J+P1W%YYM-0q9y~H;";
SqlConnection cnn;
cnn = new SqlConnection(connectionString);

try
{
    Console.WriteLine("Connecting...");
    cnn.Open();
    Console.WriteLine("Connected!");

}
catch(SqlException)
{
    Console.WriteLine("Unable to connect to database!");
}
finally
{
    cnn.Close();
}


Console.ReadLine();

using System.Data.SqlClient;
Console.WriteLine("Database connector");
string connectionString = "Data Source=localhost,3306;Initial Catalog=testcon;User id=root;Password=~'!(J+P1W%YYM-0q9y~H;";
SqlConnection cnn;
cnn = new SqlConnection(connectionString);

try
{
    Console.WriteLine("Connecting...");
    cnn.Open();
    Console.WriteLine("Connected!");

}
catch(SqlException)
{
    Console.WriteLine("Unable to connect to database!");
}
finally
{
    cnn.Close();
}


Console.ReadLine();