MySQL Bugs: #12771: Connector/Net can't connect to MySQL 4.1.14-nt

Bug #12771	Connector/Net can't connect to MySQL 4.1.14-nt
Submitted:	24 Aug 2005 2:11	Modified:	30 Aug 2005 6:18
Reporter:	Markus Popp
Status:	Closed
Category:	Connector/Net	Severity:	S1 (Critical)
Version:	1.0.4	OS:	Microsoft Windows (Windows)
Assigned to:	Reggie Burnett	Target Version:

Description:
After updating from MySQL 4.1.13-nt to 4.1.14-nt, I haven't been able to connect to the
server anymore using MySQL Connector/Net 1.0.4. Connecting using MySQL client, JDBC and
PHP works without any problems. Operating system is Windows XP SP 1.

How to repeat:
using System;
using MySql.Data.MySqlClient;

namespace test
{
	class Class1
	{
		[STAThread]
		static void Main(string[] args)
		{
			string constring = "Data Source=localhost;User Id=user;" +
				"Password=password;Database=database";

			MySqlConnection con = new MySqlConnection(constring);

			try 
			{
				con.Open();

				Console.WriteLine("Connection established!");

			}
			catch (Exception ex)
			{
				Console.WriteLine(ex.ToString());
			}
			finally
			{
				con.Close();
			}

			Console.ReadLine();
		}
	}
}

produces error message

System.InvalidCastException: Die angegebene Umwandlung ist ungültig.
   at System.Convert.ToInt64(Object value)
   at MySql.Data.MySqlClient.NativeDriver.Configure(MySqlConnection connection)
   at MySql.Data.MySqlClient.MySqlConnection.Open()
   at test.Class1.Main(String[] args) in d:\visual studio
projects\archiv\test\class1.cs:line 18

If I change the connection string to other servers using other versions, it works.

Thanks for bug report. I was able to reproduce the bug on MySQL 4.1.14:

Unhandled Exception: System.InvalidCastException: Specified cast is not valid.
   at System.Convert.ToInt64(Object value)
   at MySql.Data.MySqlClient.NativeDriver.Configure(MySqlConnection connection)
   at MySql.Data.MySqlClient.MySqlConnection.Open()
   at ConsoleApplication1.Class1.Main(String[] args) in d:\store odbc
files\12771\class1.cs:line 28

Thank you for your bug report. This issue has been committed to our
source repository of that product and will be incorporated into the
next release.

If necessary, you can access the source repository and build the latest
available version, including the bugfix, yourself. More information 
about accessing the source trees is available at
    http://www.mysql.com/doc/en/Installing_source_tree.html

Additional info:

This appears to be fixed in 1.0.5

Thank you for fixing this bug so quickly!

Do you have the fixed .dll file for .NET 1.1 available and could you attach it to this
bug report? That would be great. Thank you!

Markus

Added to 1.0.5 changelog: 

<listitem><para>&connector_net; could not connect to MySQL 4.1.14. (Bug
#12771)</para></listitem>