Question

我目前正在用c＃开发自己的密码管理器。

我的更新功能有问题：

protected internal bool Update()
    {
        // the updatestring that gets insert into the sqlitecommand
        string updatestring = "";

        // the affected rows returned by ExecuteNonQuery()
        int affectedrows = 0;

        try
        {
            using (SQLiteConnection connection = GetDatabaseConnection())
            {
                int i = 1;

                // looping trough the dictionary that holds the data of the table
                foreach (KeyValuePair<string, dynamic> keyValuePair in ArrData)
                {
                    // format the update value e.g:  Id = @Id
                    updatestring += String.Format("{0} = @{1}", keyValuePair.Key, keyValuePair.Key);

                    // if its not the last value to be updated add a , to the string
                    if (i < ArrData.Count)
                    {
                        updatestring += ", ";
                    }

                    i++;
                }

                connection.Open();

                // building the commandtext TableName is set by the child class
                SQLiteCommand sqLiteCommand = new SQLiteCommand(String.Format("UPDATE {0} SET ({1})", TableName, updatestring), connection);
                sqLiteCommand.CommandType = System.Data.CommandType.Text;

                // again looping trough the dictionary to add the parameters to the command
                foreach (KeyValuePair<string, dynamic> keyValuePair in ArrData)
                {
                    sqLiteCommand.Parameters.Add(new SQLiteParameter("@" + keyValuePair.Key,  keyValuePair.Value));
                }

                affectedrows = sqLiteCommand.ExecuteNonQuery();
                connection.Close();
            } 
        }
        catch (SQLiteException ex)
        {
            MessageBox.Show("Update" + Environment.NewLine + ex.Message);
            return false;
        }

        return affectedrows > 0 ? true : false;
    }

我正在使用libsodium加密敏感数据。加密后，我使用base64对byte []进行编码。这里的问题是，sqlite不会在我的base64编码变量中转义'='符号。

它抛出一个错误，说我在'='附近有一个sql逻辑错误

你们有解决这类问题的聪明方法吗？

C＃SQLite转义“ =”准备好的语句

0 个答案: