从C#将DateTime插入Sql Server 2008

Question

我一直试图让这个权利超过2小时,所以任何帮助都非常感谢

  public void setAppointment(int studentID, DateTime appt)
    {
        connection.Open();

        string sqlStatement3 = "UPDATE dbo.students SET appointmentDate = '" + appt.Date.ToString("yyyy-MM-dd HH:mm:ss") + "' WHERE ID = " + studentID + ";";

        OleDbCommand updateCommand = new OleDbCommand(sqlStatement3, connection);            
        updateCommand.ExecuteNonQuery();

        connection.Close();
    }

所以基本上做的是将日期时间插入到sql server表中,保持月和日的相同格式,以避免区域设置妨碍.

唯一的问题是时间仍然是00:00:00.即使我调试代码时,'appt'显示28/06/2013 09:30:00

Answer 1

试试下面

 public void setAppointment(int studentID, DateTime appt)
        {
            connection.Open();

            string sqlStatement3 = "UPDATE dbo.students SET appointmentDate = ? WHERE ID = ?";

            OleDbCommand updateCommand = new OleDbCommand(sqlStatement3, connection);
            updateCommand.Parameters.AddWithValue("@p1", appt);
            updateCommand.Parameters.AddWithValue("@p2", studentID);
            updateCommand.ExecuteNonQuery();

            connection.Close();
        }

但!

你说它是sql server而你使用的原因是OleDbCommand什么？

如果它是sql server,请尝试下面

public void setAppointment(int studentID, DateTime appt)
{
    using (SqlConnection con = new SqlConnection(connectionString))
    using (SqlCommand cmd = con.CreateCommand())
    {
        cmd.CommandText = "UPDATE dbo.students SET appointmentDate = @appointmentDate WHERE ID = @ID";
        con.Open();
        cmd.Parameters.AddWithValue("@appointmentDate", appt);
        cmd.Parameters.AddWithValue("@ID", studentID);
        cmd.ExecuteNonQuery();
    }
}