Connecting to embedded FireBird database from C# app issue

Question

I seem to have an issue with connecting to an embedded FireBird database from a sample C# app. Here's what I've got.

static void Main(string[] args)
    {

        //Some constant parameters used to form up the connection string... 
        #region constant literals
        const String User = "SYSDBA";
        const String Password = "masterkey";
        const String DBPath = "D:\\!tmp\\1\\cafw.fdb";
        const String DLLPath = @"fbembed.dll";
        const String Charset = "WIN1251";
        const int Dialect = 3;
        #endregion

        //I check whether we actually have a database file nearby
        //and fbembed.dll. If we don't - we leave
        if (File.Exists(DBPath) == true && File.Exists(DLLPath) == true)
        {
            //I form up a connection string out of literals I've declared above
            FbConnectionStringBuilder CStr = new FbConnectionStringBuilder();

            CStr.ServerType = FbServerType.Embedded;                
            CStr.UserID = User;
            CStr.Password = Password;                
            CStr.Dialect = Dialect;                
            CStr.Database = DBPath;
            CStr.Charset = Charset;                                
            CStr.ClientLibrary = DLLPath;

            //And then I finally try to connect
            FbConnection Conn = new FbConnection(CStr.ToString());                

            try
            {
                //See what we've got in the end
                Console.WriteLine(CStr.ToString());
                //And try to connect
                Conn.Open();
            }
            catch (Exception Ex)
            {
                //Show me what has gone wrong
                Console.WriteLine("\n" + Ex.Message.ToString());
                Console.ReadKey();
            }
            finally
            {
                Conn.Close();
            }
        }
    }

The problem is, it yields me a

server type=Embedded;user id=SYSDBA;password=masterkey;dialect=3;initial catalog=D:!tmp\1 \cafw.fdb;character set=WIN1251;client library=fbembed.dll

No message for error code 335544972 found.

Invalid ESCAPE sequence

as an output.

I've googled around to find out about 335544972 error code, and it seems to be something about invalid connection string, but I haven't found any "official" info about that.

Hase anybody encountered anything similar so one could tell me what am I doing wrong?

Thanks.

UPD: As it has been adviced, I've tried to simplify my connection string. So, instead of what was done above I used

FbConnection Conn = new FbConnection("Database=D:\\tmp\\1\\cafw.fdb;ServerType=1");

and it gave me a message that "Trusted Auth isn't supported on Embedded Firebird". So, I tried to use a regular sysdba login

FbConnection Conn = new FbConnection("Database=D:\\tmp\\1\\cafw.fdb;ServerType=1;User=SYSDBA;Password=masterkey");

and got the very same error message.

Answer 1

Weird stuff.

It is hard to believe, but the only reason I can name for this is that my c# solution resided somewhere in d:......\c#\myAppProject (yeah, it's all about # sign).

After I replaced the project, all worked correct.