如何在system.data.sqlite中转义字符串? [英] How to escape a string in system.data.sqlite?
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问题描述
我正在像这样执行一个SQL查询(system.data.SQLite):
I am executing an SQL query (system.data.SQLite) like so:
var color = "red";
var command = new SQLiteCommand("SELECT something FROM tabletop WHERE color = '" + color + "'", Connection);
var reader = command.ExecuteReader();
颜色变量是用户提供的文本。
如何转义此文本以防止SQL注入?
还是这种不好的做法,我应该以完全不同的受保护方式执行查询吗?
The color variable is a text supplied by the user. How can I escape this text to prevent SQL injection? Or is this bad practice and I should execute the query in some entirely different "protected" way?
推荐答案
您应该使用参数化查询:
You should use parameterized queries:
var command = new SQLiteCommand("SELECT something FROM tabletop WHERE color = @Color", Connection);
command.Parameters.AddWithValue("Color", color);
您还可以传递 SQLiteParameter
的数组放入 command.Parameters
集合,如下所示:
You can also pass an array of SQLiteParameter
s into the command.Parameters
collection like so:
SQLiteParameter[] parameters = { new SQLiteParameter("Color", color), new SQLiteParameter("Size", size) }; // etc.
command.Parameters.AddRange(parameters);
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