I have 2 textboxes.
I want that when I pick date in first textbox using datepicker then second TextBox automatically show next week date.
How can I do this ?
Here is my code-
Use DateTime.AddDays:
txtToDate.Text = DateTime.Parse(txtDateFrom.Text, System.Globalization.CultureInfo.InvariantCulture).AddDays(7).ToString("dd.MM.yy");
You can use this code in txtDateFrom leave event or value change event
TextBox2.Text = Convert.ToDateTime(TextBox1.Text).AddDays(7.0).ToString();
You need to make correct datetime format like (MM/dd/yyyy) of textbox before convert. If you use dd/MM/yyyy format then check below code.
string[] date1 = TextBox1.Value.Split('/');
string FinalDate1 = date1[1] + "/" + date1[0] + "/" + date1[2];
TextBox2.Text = Convert.ToDateTime(FinalDate1).AddDays(7.0).ToString("dd/MM/yyyy");
Add 7 days to the first date value.
DateTime date1 = System.DateTime.Now;
DateTime date2 = date1.AddDays(7);
Related
In VB6, I am trying to add days to a date which is in the format 'YYYYMMDD'. I can add days like this:
Pull_Date = Need_Date + Val(txtLeadTime.Text)
which works, until the resulting days is greater than the number of days in the month. I tried using DateAdd, but it doesn't accept the YYYYMMDD format - neither does CDate.
You need to convert your date string to a date so you can use the DateAdd function:
Dim Need_Date As String
Dim Pull_Date As Date
Dim tmpDate As Date
Need_Date = "20141113"
tmpDate = CDate(Mid$(Need_Date, 5, 2) & "/" & Right$(Need_Date, 2) & "/" & Left$(Need_Date, 4))
Pull_Date = DateAdd("d", Val(txtLeadTime.Text), tmpDate)
MsgBox Format$(Pull_Date, "yyyymmdd") '// if LeadTime is 25 days, displays 20141208
Please note, parsing your Need_Date by character position can blow up if it's not formatted exactly as expected.
After digging deeper into this old code, I found that a conversion function was already created:
Public Function Date_Format_YYYYMMDD(ByVal sDate As String) As String
If IsDate(sDate) Then
sDate = Format(sDate, "YYYYMMDD")
End If
Date_Format_YYYYMMDD = sDate
End Function
With this function, it's really easy:
Pull_Date = Date_Format_YYYYMMDD(Need_Date) + Val(txtLeadTime.Text)
The only thing I don't understand is why
Pull_Date = Format(Need_Date, "YYYYMMDD") + Val(txtLeadTime.Text)
doesn't work. Seems like it's doing the same thing as the function.
I need help with a quick question I a string "07/10/2014" how can I get first the year "2014",second the month "10" ,third the day- "07" with out "/" only the values in VB.NET
Please show me the full way how to do it.
First declare it like this Dim x as Date = "07/10/2014". And to get the individual values use x.Day, x.Month and x.Year
Use the DateTime.Parse() method then use the return DateTime structure to extract the Month, Day, Year properties (similar to DJK's answer above).
If the thread's current culture is set to one that understands "mm/dd/yyyy" format, then the code can be as simple as:
Dim dt As DateTime = DateTime.Parse("07/15/2014")
MessageBox.Show(String.Format("Month: {0}; Day: {1}; Year: {2}", dt.Month, dt.Day, dt.Year))
Have a look at this.
Dim MyDate As Date
MyDate = "07/10/2014"
MsgBox(Format(MyDate, "dd")) ' dd gives you day number
MsgBox(Format(MyDate, "MM")) ' MM gives you month number
MsgBox(Format(MyDate, "YYYY")) ' YYYY gives you year number
The full list of date fomatting string could be found here (MSDN)
UPDATE
Use following example to assign to a string variable
Dim DayOfString As String DayOfString
DayOfString = Format(MyDate, "dd")
I am retrieving data from DB where there is a separate date and time fields. I want to join them into a DateTime field in my VB.NET project.
How would you suggest accomplishing this?
I tried this but it's not working for me.
"String was not recognized as a valid DateTime."
Dim InDate As New DateTime(incident.IncidentDate.Value.Year, incident.IncidentDate.Value.Month, incident.IncidentDate.Value.Day, 0, 0, 0)
Dim InTime As New DateTime(1900, 1, 1, incident.IncidentTime.Value.Hour, incident.IncidentTime.Value.Minute, incident.IncidentTime.Value.Second)
Dim combinedDateTime As DateTime = DateTime.Parse((InDate.ToString("dd/MM/yyyy") + " " + InTime.ToString("hh:mm tt")))
rdtpIncidentDateTime.SelectedDate = combinedDateTime
You can just create a new DateTime value from the components in InDate and InTime:
Dim combinedDateTime As DateTime = New DateTime( _
InDate.Year, InDate.Month, InDate.Day, _
InTime.Hour, InTime.Minute, InTime.Second _
)
DateTime exposes a method called DateTime.TimeOfDay
You can simply use DateTime.Add to append the time to the date.
Dim dateAndTime As DateTime = myDate.Add(myTime.TimeOfDay)
Dim CombinedDate As Date = Date1.Date + Time1.TimeOfDay
This will work when you want to combine the DATE from one variable and the TIME from a different variable.
Date is an alias to DateTime. In VB.NET, they are the same thing. You can see all the aliases in this chart on MSDN. Link
You can do it in one line...declare your indate and use the incident values for the time instead of zeros.
I have 2 fields fromDate and toDate for a school's term. Say their values are '01-06-2013' to '01-09-2013'. How do I get the total number of days in the term, in vb.net?
You can try this in vb.net:
Dim t1 As DateTime = Convert.ToDateTime("01-06-2013")
Dim t2 As DateTime = Convert.ToDateTime("01-09-2013")
MessageBox.Show(t2.Subtract(t1).Days)
I think сlass DateDiff can help you: http://msdn.microsoft.com/ru-ru/library/ms189794.aspx
Try this (C#):
TimeSpan timespan = Convert.ToDateTime("01-09-2013").Subtract(Convert.ToDateTime("01-06-2013"));
Response.Write(timespan.Days+1);
Usually the Subtract method return a value that is one less than the correct value so added one to get excat no of days
OR:
DateDiff(DateInterval.Day , curDate, srDate) //can replace the first argument with "d"
Also check this link
I need to retrieve the current date in asp.net and then compare that with the date given by the user in textbox1.text(mm/dd/yyyy format), if date date given is greater than current date then error else add 4months2days with that date and display it in textbox2.text.
help me please,
thanking you guys,
Indranil
DateTime dateToCompare;
if(DateTime.TryParse(textbox1.text, out dateToCompare))
{
DateTime current = DateTime.Now;
TimeSpan ts = current - dateToCompare;
if (ts.Ticks < 0)
{
//display error
}
else
textbox2.text = dateToCompare.AddMonths(4).AddDays(2).ToString("mm/dd/yyyy");
}
}
I'm not going to write your code, but in .NET you can use ToString to specify a date format, TryParse to get a date out of a string. And AddDays, AddMonths etc to manipulate a date.
In javascript, there's no simple way to format output, but you can use getMonth etc to prompt the individual values and concatenate a string from that. You can use a combination of getDate and setDate to manipulate dates. It automatically corrects for new months, i.e. if you run myDate.setDate( myDate.getDate() + 60 ) it'll actually increment by 60 days; you won't end up with a weird date like May 74th.
Keep in mind that months in javascript are zero-based, ie January is 0, February is 1, etc.
You can create a new date in javascript by new Date(yy, mm, dd) or new Date('yy/mm/dd'), so you could string-manipulate an input and create a date from that.
To compare two dates, you can subtract one from the other, and get the difference in milliseconds.
if ( dateA - dateB < 0 ) // dateB is greater than dateA (occurrs later)
and
var diff = Math.abs(dateA - dateB) // difference in ms, no matter which date is greater
DateTime date1 = new DateTime();
if(DateTime.TryParse(textbox1.text, out date1)){
if (date1.CompareTo(DateTime.Now) > 0)
{
//Error code here
}else
{
textbox2.text = date1.AddMonths(4).AddDays(2);
}
}