I want to make a little program that will count down the hours to a specific date. I.E. "Hours until: ##/##/##"
Like they do for new year and other big events in the world or whatever but I'm having big problems. I don't know how to use datediff to compare the difference in hours from 1 date to the next.
How can we handle the case where one date is blank in DateDiff method? Example:
DateDiff(DateInterval.Day, CType(txt61_2.Text, Date), CType(txt21_2.Text, Date))
In above statement fields txt61_2.Textor txt21_2.Text may be empty then take it has 0
I have three sets of labels, lbl_seconds, lbl_minutes and lbl_hours. These labels have the default value of 00:00 and I want the timer to change that for each label. I have googled this but I cannot seem to find any good info on it. Do I need three separate timers? I have also noticed that the timers have their own tick event handler. I guess it's in this that I need to change the value of the label. But I cannot figure out how to do just that.
View 2 RepliesI'm trying to get an If statement to check is the date picked from a datetimepicker is at least 3 days prior to the current date, I can get it to calculate the difference however if I chose a date that 4 days prior to the current date (i.e the result being -4), the else statement doesnt fire.is this something to do with the result being a negative value? I did try to assign the DateDiff result to a variable defined as a short and then used this variable in the If statement, but still get the same issue. Option Strict isn't showing any issues.
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I found very wiered behaviour for DateDiff. or any other kind to date difference methods avalibale when Date has AM/PM specified in it.
Cl.LunchStartTime =
"2009/7/13 12:10:00 AM"
Cl.LunchEndTime =
[code].....
I need to return the exact difference between two dates in the form of a string. If the dates are 01-FEB-2012 and 01-FEB-2014, the function should return "2 years" If the dates are 01-FEB-2012 and 01-MAR-2014, the function should return "25 months". If the difference is not in exact years or months, it should return the difference in days. I do not want to use DateDiff from the Visual Basic namespace so the code is portable to C#.
View 1 Repliesi am a beginner in vb8 i have a text file named alarm.txt,sample alarm.txt file is shown below
can someone help me to read the alarm.txt file and extract data.for eg
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The user can choose it, like this.
Dom = Sunday
Seg = Monday
...
Sex = Friday
...
So the user will choose the days and the hours for my program open and execute the progress that I programed on the button START, so how to make it start on the days/hours that user wants? Btw the program will stay on the Notification area.
can anyby help me to add 4 hours to the following date time value [code]
View 4 RepliesI have a date value (e.g. 2011-04-11 07:45:00.000) which I am pulling from my database (via Entity Framework). I need to pull out only the hour from the original date value (e.g. 07:45:00), get the current time, and then subtract the current time from the database time value. In pseudo-code, I'm looking to do something like this:
Dim my_date as DateTime = from_db ' This is the value pulled from the database.Dim this_date as DateTime = Date.Now ' This is pulled via a VB.NET function.Dim my_hour = my_date_but_only_hours ' Somehow, I need to strip the date off the my_date Dim this_hour = this_date_but_only_hours ' Same as line above.Dim hour_difference = my_hour - this_hour Response.Write("There are " & hour_difference & " hours left before the time runs out.")
I am currently working on a silverlight project with RIA Services and have seem to come across a bug(or wrote a new one).In a simple query I am retrieving a entity model from the server. In the server side service class a DateTime is correct(to what's in the db) but on the client it seems to go back 24 hours and maybe 10 hours...6/04/2009 12:00:00 AM (Database) turns into 5/04/2009 2:00:00 PM and also displays as 5/4/2009 12:00:00 AM.
View 2 RepliesWould it be possible to search a table, confining to a specific date range based on a date-time column, and get a count of the 10 most used words in a particular var-char column excluding a list of words?All in SQL?Currently I am pulling out the records that match and sorting through the contents outside of SQL, I would think where I can do it directly on the server it would be more efficient.(SQL 2008)
View 4 RepliesI am writing a personal accountant software using VB2010. What I'm looking for now is to get the week date range of a specific date (Monday to Sunday). For example, if the given date is 16/03/2012, I want to get back:12/03/2012 -> 18/03/2012
View 5 RepliesHow do you do the code setup for Hours and Years Slept Program
View 4 RepliesI need to calculate the number of weeks between 2 dates. This will be used in a billing system.
View 9 RepliesWhere in Visual Basic 2008 Express Edition Software program do you specify a specific installation directory for a program?
c:Program Filesfinished program
I want to publish my program to try it out on another system and I want to ensure its installed in the directory structure I want.
I have to create a program that ask the user to enter the amount of hours work for 5 diferent projects in textboxes. The user have to enter the time he worked in minutes. Ex: 153, 280, 600, 130, 20... The total then is out putted into a textbox in this format "13 Hours and 35 Minutes" I'm having dificulties making the conversion and the separation from hours and minutes. I understand that the total is divided by 60, but if we fallow the above numbers the total hours comes out to 1183 / 60 = 19.71. So I'm having problems with the .71 mnts or digits... so from this total I have to output the total of in this particular format: "19 Hours and ?
View 2 RepliesIn one of my school assignments I am trying to count fields (that are strings) in a database and then publish them to the screen, however I can't seem to figure out how to count them.I've been trying to do something like this but I am having trouble with the bold part. I think the datatypes are the issue but if not this then what? What is a better way to try and do this?
Private Sub btnCalc_Click(sender As System.Object, e As System.EventArgs) Handles btnCalc.Click
Dim numRep As Integer
Dim numDem As Integer
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how to count the content of a specific directory?And how do you delete an old file (ex. say your old program that create a back-up. But it has already created many back-ups and now it takes to much of the space in your hardisk.)
View 3 RepliesI have a program that reads a file with Pacific Daylight Time, I want users to see the time and date in their local environment.
At present I have in Australia a time difference of 18 hours, so I have a list box with -24 to +24 and currently set at 18, my code is elementary as long as I have moved past day one of the month it suits me personally, but I want to distribute my app, so I need something better.
I'm creating a program for my workplace which stores hours worked, calculates pay and all that stuff.Problem being, the database will be accessed through the network and i want to be able to select the database from an openfile dialog on first use to locate the database. On every program start up it then would have the database location stored within the program itself.
View 1 RepliesWhat is the simplest way to count the number of occurances of a specific character in a string.[code]
View 8 Repliesi have a form which is having 1 list view and a text box. list view having total 100 rows data list view is having a 5 column column 3 is having two words "yes" and "no" i just want to count the number of occurrence of the word "yes" in column 3 the total row can be count with this code: COUNT TOTAL ADMISSION Dim rowcount As Integer = 0
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I have a datagridview in my project that is loaded with data from a SQL table when the form loads. One of the columns contains names of users in the database. I'm wondering what is the best way to the number of times a name appears in the column. For example, the user name "Rob Smith" might be listed 12 times in the column,I'd like to pass that number to a textbox.
View 3 RepliesHow would you select the last part of a string starting at a specific character count. For example I would like to get all text after the 3rd comma. but I get an error saying "StartIndex cannot be less than zero."
Dim testString As String = "part, description, order, get this text, and this text"
Dim result As String = ""
result = testString.Substring(testString.IndexOf(",", 0, 3))
how to count the content of a specific directory?And how do you delete an old file (ex. say your old program that create a back-up. But it has already created many back-ups and now it takes to much of the space in your hardisk.)
View 1 RepliesHow can I count date? E.g. today date = 6/4/2009 and last date = 3/3/2009. So the algorithm should be like this : new date = today date - last date.
View 3 RepliesIs it possible with VB .NET to make the program use specific regional settings? More precisely , I want to make my application always use the English regional settings (those defined from Control panel > Regional settings) in order to always use (and calculate) the decimal numbers by using the dot symbol ( . ) as decimal separator , regardless the settings on the current PC (in order to avoid forcing the user to change his Regional settings) ?
View 7 Replieshow can i do a date count like from 1st jan 2010 to 19th may 2010, how many days are there in it? is there such function like datecount?
View 3 RepliesI want to do a SQL SELECT COUNT in VB .NET to an Access DB. I can get the code to work using a text fields and text criteria but if I use a date field and Date criteria it returns 0 when there are some 47 records that it should count.
Dim Results As String
Dim InvDT As String = Date.Today
InvDT = "#" & InvDT & "#"
Dim strCnn As String = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=S:MainData.mdb" connection string to your DB'
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