C＃代码分析CA2000

我有我以为我已经固定的代码分析为CA2000警告功能，但它只是不会消失。该警告是对的SqlCommand。这里的功能：

I have a function which I thought I had fixed the CA2000 warning in Code Analysis for, but it just won't go away. The warning is on SqlCommand. Here's the function:

protected internal void LogUserSession(int? managerID)
{
    using (var sqlCommand = new SqlCommand())
    {
        sqlCommand.SetCommand("usp_UserActivity_Create");

        SqlParameter prmSessionID = new SqlParameter();
        prmSessionID.ParameterName = "@sessionID";
        prmSessionID.Direction = ParameterDirection.Input;
        prmSessionID.SqlDbType = SqlDbType.VarChar;
        prmSessionID.Size = 32;
        prmSessionID.SetValue(SessionID);

        SqlParameter prmUsername = new SqlParameter();
        prmUsername.ParameterName = "@username";
        prmUsername.Direction = ParameterDirection.Input;
        prmUsername.SqlDbType = SqlDbType.VarChar;
        prmUsername.Size = 32;
        prmUsername.SetValue(Username);

        SqlParameter prmLoginID = new SqlParameter();
        prmLoginID.ParameterName = "@loginID";
        prmLoginID.Direction = ParameterDirection.Output;
        prmLoginID.SqlDbType = SqlDbType.Int;

        sqlCommand.Parameters.Add(prmSessionID);
        sqlCommand.Parameters.Add(prmUsername);
        sqlCommand.Parameters.Add(prmLoginID);

        using (sqlCommand.Connection = new SqlConnection(ConnectionStrings.MainApp))
        {
            sqlCommand.Connection.Open();
            sqlCommand.ExecuteNonQueryTryCatch();

            if (prmLoginID.Value != DBNull.Value) LoginID = Convert.ToInt32(prmLoginID.Value);
        }
    }
}

我有另一个函数，要我看起来没有什么不同，但不具有与其关联的一个CA2000警告。下面是函数：

I have another function that to me looks no different but does not have a CA2000 warning associated to it. Here's that function:

public static bool IsAvailable(string username)
        {
            using (var sqlCommand = new SqlCommand())
            {
                sqlCommand.SetCommand("usp_UsernameIsAvailable");

                var prmUsername = new SqlParameter();
                prmUsername.ParameterName = "@username";
                prmUsername.Direction = ParameterDirection.Input;
                prmUsername.SqlDbType = SqlDbType.VarChar;
                prmUsername.Size = 32;
                prmUsername.SetValue(username);

                var prmReturnValue = new SqlParameter();
                prmReturnValue.ParameterName = "@returnValue";
                prmReturnValue.Direction = ParameterDirection.ReturnValue;
                prmReturnValue.SqlDbType = SqlDbType.Bit;

                sqlCommand.Parameters.Add(prmUsername);
                sqlCommand.Parameters.Add(prmReturnValue);

                using (sqlCommand.Connection = new SqlConnection(ConnectionStrings.ComplianceApps))
                {
                    sqlCommand.Connection.Open();
                    sqlCommand.ExecuteNonQueryTryCatch();

                    return Convert.ToBoolean(prmReturnValue.Value);
                }
            }
        }

我不明白什么是怎么回事，我需要做什么来解决它的。

I don't understand what's going on here and what I need to do to fix it.