I have variable which holds a date value so I would like to add 6 days to the current date variable. The variable always changes based on user's selection but i always would like to add 6 days to the current date variable. Here is what i have and i would like to create a variable called WeekEndDate
and this variable should hold the value of WeekBeginDate
+ 6 days.
protected void Page_Load(object sender, System.EventArgs e)
{
DateTime WeekBeginDate;
DateTime WeekEndDate;
if(this.Page.Request["WeekBeginDate"] != null)
{
WeekBeginDate = DateTime.Parse(this.Page.Request["WeekBeginDate"].ToString());
Chart1.Titles[0].Text = WeekBeginDate.ToString();
WeekEndDate = WeekBeginDate.AddDays(6);
}
// load the chart with values
SqlConnection con = new SqlConnection(ConfigurationManager.ConnectionStrings["myConnection"].ConnectionString);
string sqlStatement = "SELECT DATEPART(DAY,DT)DT, sum (HOURS) as HOURS FROM myTable where DT >= WeekBeginDate and DT <= WeekEndDate group by DT ";
You could try this one:
// Initially, we have to parse the weekBeginDate string to create a DateTime object
// and then we add six days to this DateTime object.
DateTime dt = DateTime.Parse(WeekBeginDate).AddDays(6);
// Then we assign the string representation of the DateTime object we have created before.
Chart1.Titles[0].Text = dt.ToString() ;
you can add Days this way, but your object should be DateTime
not string
:
DateTime WeekBeginDate;
if(this.Page.Request["WeekBeginDate"] != null)
{
WeekBeginDate = DateTime.Parse(this.Page.Request["WeekBeginDate"].ToString());
Chart1.Titles[0].Text = WeekBeginDate.AddDays(6).ToString();
}
您可以执行以下操作:
WeekBeginDate = DateTime.Parse(WeekBeginDate).AddDays(6).ToString()
Well, since WeekBeginDate
is a string, you first need to look at converting it to a DateTime
object.
you can use DateTime.Parse or DateTime.TryParse for that.
Then you'd just use the AddDays method to do the actual work.
So I would have something like this:
protected void Page_Load(object sender, System.EventArgs e)
{
string WeekBeginDate = "";
if(this.Page.Request["WeekBeginDate"] != null)
{
WeekBeginDate = (string)this.Page.Request["WeekBeginDate"];
Chart1.Titles[0].Text = WeekBeginDate ;
DateTime actualBeginDate;
if (DateTime.TryParse(WeekBeginDate, out actualBeginDate))
{
DateTime actualEndDate = actualBeginDate.AddDays(6);
string WeekEndDate = actualEndDate.ToString(); // Pick your favorite string formatting
}
}
}
I chose TryParse
instead of Parse
since the WeekBeginDate
is coming from the user and you can't really know for sure what format it will be in. So Parse
may throw an exception.
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