如何通过C#在SQLite数据库中写入变量DateTime值? [英] How to write variable DateTime value in SQLite database through C#?

问题描述

我对 C# 和 SQLite 数据库非常陌生，并且有一些变量与 TimeStamp 一起存储在 SQLite 数据库中.这是我的代码:

I'm very new to C# and SQLite database and have some variables which to be stored in SQLite database along with TimeStamp. Here is my code:

    DateTime now = DateTime.Now;
    m_dbConnection = new SQLiteConnection("Data Source=MyDatabase.sqlite;Version=3;");
    m_dbConnection.Open();
    var sql = string.Format("insert into Table (Timestamp) values ({0})", now);
    SQLiteCommand command = new SQLiteCommand(sql, m_dbConnection);
    command.ExecuteNonQuery();

但是我遇到了错误.我猜，SQLite 不支持 DateTime.我尝试将 DateTime now 转换为 string 但它仍然不起作用.

But I'm getting error. I guess, SQLite doesn't support DateTime. I tried converting DateTime now to string but it still doesn't work.

    DateTime now1 = DateTime.Now;
    var now = now1.ToString("hh.mm.ss.fff");
    m_dbConnection = new SQLiteConnection("Data Source=MyDatabase.sqlite;Version=3;");
    m_dbConnection.Open();
    var sql = string.Format("insert into Table (Timestamp) values ({0})", now);
    SQLiteCommand command = new SQLiteCommand(sql, m_dbConnection);
    command.ExecuteNonQuery();

我做错了什么吗?

推荐答案

使用参数避免 SQL 注入:

Use parameters to avoid SQL injection:

var sql = string.Format("insert into Table (Timestamp) values (@now)", now);
SQLiteCommand command = new SQLiteCommand(sql, m_dbConnection);
command.Parameters.AddWithValue("@now",now);

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