如何从C#中的日期字符串中仅获取日期部分 [英] how to get only date part from date string in C#

问题描述

我需要使用"2015-10-03"格式，但即时通讯这样的"10/3/2015"和"10/3/2015 12:00:00 AM"都无法在我的计算机上正常工作查询.因为我的updatedate数据类型仅是日期

i need to get in this format "2015-10-03" , but im getting like this "10/3/2015" and "10/3/2015 12:00:00 AM" both are not working in my query .because my updateddate datatype is date only

    Fromdate = Txtbox_AjaxCalFrom.Text.Trim();//  10/3/2015
    DateTime frmdt = Convert.ToDateTime(Fromdate);// 10/3/2015 12:00:00 AM
    ToDate = Txtbox_AjaxCalTo.Text.Trim();
    DateTime todt = Convert.ToDateTime(Fromdate);

我想要这样的查询

updateddate between  '2015-10-03' and '2015-10-03' 

完整查询

   gvOrders.DataSource = GetData(string.Format("select * from GoalsRoadMap where Activities='{0}' and project ='" + ProjectName + "' and updateddate between  '2015-10-03' and '2015-10-03' ", customerId));

推荐答案

尝试一下:

DateTime frmdt = Convert.ToDateTime(fromDate); 
string frmdtString = frmdt.ToString("yyyy-MM-dd");

或一次:

字符串frmdt = Convert.ToDateTime(fromDate).ToString("yyyy-MM-dd");

因此您的代码应如下所示:

So your code could look like this:

Fromdate = Txtbox_AjaxCalFrom.Text.Trim();//  10/3/2015
string frmdt = Convert.ToDateTime(Fromdate).ToString("yyyy-MM-dd");
ToDate = Txtbox_AjaxCalTo.Text.Trim();
string todt = Convert.ToDateTime(todt).ToString("yyyy-MM-dd");

gvOrders.DataSource = GetData(string.Format("select * from GoalsRoadMap where Activities='{0}' and project ='" + ProjectName + "' and updateddate between  '{1}' and '{2}' ", customerId, frmdt, todt  ));

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