C# 在sqlite中按日期时间选择行

我试图用sqlite在c#中选择介于startdate和enddate之间的行

我的日期格式如下：

2015-05-16T17:22:04.920+02:00

string CmdString = "SELECT * FROM " + tablename +  "WHERE DATETIME(timekey) >= DATETIME('2015-05-16T17:22:04.920+02:00') AND DATETIME(timekey) <= DATETIME('2015-05-16T17:24:04.920+02:00')";
SQLiteCommand cmd = new SQLiteCommand(CmdString, con);
SQLiteDataAdapter sda = new SQLiteDataAdapter(cmd);
DataTable MatchDt = new DataTable();

sda.Fill(MatchDt);

这应该是sqlite的有效格式（参考：）

我正在尝试按如下方式选择行：

2015-05-16T17:22:04.920+02:00

string CmdString = "SELECT * FROM " + tablename +  "WHERE DATETIME(timekey) >= DATETIME('2015-05-16T17:22:04.920+02:00') AND DATETIME(timekey) <= DATETIME('2015-05-16T17:24:04.920+02:00')";
SQLiteCommand cmd = new SQLiteCommand(CmdString, con);
SQLiteDataAdapter sda = new SQLiteDataAdapter(cmd);
DataTable MatchDt = new DataTable();

sda.Fill(MatchDt);

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我做错了什么？

在where之前缺少一个空格字符：

string CmdString = "SELECT * FROM " + tablename +  " WHERE DATETIME(timekey) >= DATETIME('2015-05-16T17:22:04.920+02:00') AND DATETIME(timekey) <= DATETIME('2015-05-16T17:24:04.920+02:00')";

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您在WHERE之前缺少一个空格。