c# - SQLite 错误 : near "s": syntax error

Question

我总是得到这个错误

near "s": syntax error

我的实现:

litecon.ConnectionString = "Data Source=" + AppAddress + "\\database\\mynew22.db;Version=3;UTF16Encoding=True";

此方法收到错误 -> liteda.Fill(dt);

        if (lang == "FaToMe")
            liteda.SelectCommand = new SQLiteCommand("select * from mey where trans like '%" + str + "%'", litecon);
        else
            liteda.SelectCommand = new SQLiteCommand("select * from mey where pe like '%" + str + "%'", litecon);

        DataTable dt = new DataTable();
        liteda.Fill(dt); //liteda is SQLiteDataAdapter

这个选择命令之间没有区别...

"select * from mey where pe like '%" + str + "%'"

或

"select eng "

总是在“s”附近说:语法错误

但是如果使用“xselect * from mey”，在“x”附近说:语法错误

我正在使用这个库 http://adodotnetsqlite.sourceforge.net/

Answer 1

当 str 的值包含撇号时，此查询将不起作用，因为字符串将过早终止:

select * from mey where trans like '%King Solomon's Mines%'

您必须使用参数:

cmd = new SQLiteCommand("select * from mey where trans like @pattern", litecon);
cmd.Parameters.AddWithValue("@pattern", "%" + str + "%");