DbProviderFactory dbf = DbProviderFactories\.GetFactory\("FirebirdSql\.Data\.FirebirdClient"\);
        DbConnection conn = dbf\.CreateConnection\(\);
        conn\.ConnectionString = connstr;
        conn\.Open\(\);
        DbCommand comm = dbf\.CreateCommand\(\);
        comm\.Connection = conn;
        comm\.CommandText =
            "INSERT INTO WITHBLOB \( ID, LONGTEXT \) VALUES \( 10, @LONGTEXT \)";
        DbParameter p = dbf\.CreateParameter\(\);
        p\.ParameterName = "@LONGTEXT";
        p\.DbType = DbType\.String;
        p\.Value = "Hello";
        comm\.Parameters\.Add\(p\);
        comm\.ExecuteNonQuery\(\);
        conn\.Close\(\);