VS 2008 How To Add Two Times Together From Two Strings
May 17, 2010
I am trying to write an app which allows the user to input two times , in a maskedtextbox, and take those two times and add them together then output the result to a third maskedtestbox, I havent seen anything else on the web with the same problem, only with fixed date or time, nothing that the user can change.
I am guessing you have to input the a maskedtextbox as a string then parse them to datetime, add the two together and the convert the date back to a string at runtime my code always bails out with a datetime conversion
[Code]...
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Aug 13, 2009
I am working on a UDP Client/Server, and currently i have them sending back and forth strings, which i convert to bytes, and then open the bytes to read. I want to now send an Object instead of those strings, which includes multiple unsigned integers and strings.
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Oct 16, 2009
I'm migrating from VB6 to VB.NET, in hence my questions below:
I have to write a function that returns array of strings.
How can I initiate it to empty array? I need it since I have to check if it's empty array after it returns from this function.
Is list of arrays better for this purpose? If I use a list - Is it empty when it firstly defined? How can I check it it's empty?
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Oct 16, 2009
Say I have a List(Of Tag) with Tag being an object. One member of Tag, Tag.Description, is a string, and I want to make a comma-separated concatenation of the Description members.Is there an easier way to do this than to read the Description members into a List(Of String) and then use the Join function?
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Dec 12, 2011
I want to enlarge an image, possibly up to 32 times or 64 times bigger than original dimensions (so that the user can see each pixel) if possible. The following is a simple function that I have to enlarge an image.
Private Function xEnlarge(ByVal Source As Image, ByVal Rate As Double, Optional ByVal Quality As Drawing2D.InterpolationMode = Drawing2D.InterpolationMode.HighQualityBicubic) As Image
[Code].....
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May 13, 2009
I have just started using vb.net and I have a checked list box with times throughout the day shown as
00:00 - 00:14
00:15 - 00:29
00:30 - 00:44
00:45 - 00:59
What I am trying to find is a way to get the current time and find which list item it fits into. What I think I need to do is to first of all get the current time and then go through the list splitting each item into 2 times and seeing if the current time fits. For example: Split the item 00:00 - 00:14 to 00:00 and 00:14 and then check if the current time is more than 00:00:00 but less than 00:14:59 and if so do certain task.how to go about taking each list item and splitting it into 2 separate times so I can check between them?
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Mar 31, 2009
I'm wondering how I would go about retrieving all the times between Two Times. I have 4 Textboxes.
1: Hour 1
2: Minute 1
Between
3: Hour 2
4: Minute 2
E.g if I have a list of times:
15:34
16:12
18:08
09:17
10:26
21:05
21:35
21:45
21:50
22:18
23:10
My
Dim Time1 As String
Dim Time2 As String
Time1 = (txt1H.Text & ":" & txt1M.Text)
Time2 = (txt2H.Text & ":" & txt2M.Text)
[Code] .....
How Would I Go About retrieving All The Times Between Say "21:20" & "22:30".
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Jan 8, 2010
How do I tell if the current time is between two other times? ie. is it currently between 8:00 AM & 4:00 PM.
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Apr 17, 2009
I have a countdown timer, I want to make a sound every two minutes at the moment i've got it set to if timer.txt = "00:08:00" minutes then play the sound but it stutters..
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Jun 16, 2012
How would i go about getting my application to run 2 times then show form 2 then once they close form2 it dosent show form 2 anymore once the program starts again after closing.?
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Jun 29, 2011
Private Type IP_ADDRESS_STRING IPadrString As String * 16 End Type
i want to set the value of IpadrString to times 16 how can i do that in vb.net without using type
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Sep 15, 2010
I have about 1.000 text files in a folder, and I wanto to make some statistics reading the files content.In the first place I store the files path + name in a MyFiles() array, then, when I press a "Start" button I read the several files:
For x As Integer = 0 To MyFiles.Length - 1
FileReader = My.Computer.FileSystem.ReadAllText(MyFiles(x))
(data processing)
(data processing)
next
then I have copied and pasted the first 500 files in a new folder and added to the code if x > 500 the stop The strange thing is this: to elaborate the 500 files of the second folder takes about 4 seconds, to elaborate the first 500 files of the first folder (THAT ARE IDENTICAL TO THE 500 FILES OF THE SECOND FOLDER) takes 7 seconds.The same identical code takes different times to elaborate the same identical files if they are stored in different folders with different files number.
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Dec 2, 2009
im struggling a bit and was wondering if anyone can help. Im looking to compair 2 sets of datess and times, for examp2 textbox1 27/02/1980 23:00 and text box 2 having the real time date and time. But instead off having years days hours mins and seconds i want to display how many seconds has passed between the two date and times. Can anyone show me how this is done as i have no clue where to start.
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Nov 25, 2010
I have a button where I get data from a database that matches a search string I enter. Everything works fine the first time the button is clicked. However, if I click it again with a different search string, I get the same results as the original search string. I've tried to dispose, clear, and reset my dataset before I load the data each time, but it still finds the original query. This is the code I use to get and request the data:
Private Sub btnCfind_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnCfind.Click
mdbFile = "TCICUST.DBF"
mdbCond = " WHERE COMPANY LIKE '" & cbCust.Text & "%' ORDER BY COMPANY "
GetDB()
[Code] .....
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Nov 5, 2011
I watched a youtube video that showing me how to make multiselect work and it worked but its just one problem: It opens two times.
Public Class Form1
Private Sub HScrollBar1_Scroll(ByVal sender As System.Object, ByVal e As System.Windows.Forms.ScrollEventArgs) Handles HScrollBar1.Scroll
[code].....
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Apr 13, 2011
i am having a bit of trouble getting a string to print a specific number of times. I am writing a do...loop or a For...next statement where it prints a string ("*") times the counter on the do...loop/for...next but can't quite get it to work.
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Jun 3, 2010
This is the current code. Rather than put in this 100 times for each number, What would be a better way? Have had a go myself but can't get it to work.
[Code]...
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Jan 17, 2011
how to get the time difference between 2 date & times Where
from_time falls >= 22:00 of the From_date & the to_time falls <= 06 of the To_Date
for example:
From_Date = 01/01/2011 20:00 ' Where Work Started
To_Date = 02/01/2011 08:00 'Where Work Ended
Time_Covered_Between_22TO06_As_Night = 22:00 to 06:00 is 08:00 hrs How to equate it?
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Jan 16, 2011
Having problems with a datatable which consists of multiple datalogger information. Within the datetime field there are as the name suggests listed date and times entry i.e. 12/01/11 22:56:56 ect ect.
Problem is i am graphing this and when ms chart reads the duplicate entries as a series. It doesnt like it and comes up with a slightly odd interpretation. I need to get the duplicate entries out to establish a single time series.
I was proposing to clone the original datatable and run a loop to remove the duplicates. I have been trying to do this for days and have played with a whole load of examples, without success. Can anyone point me in the right direction on this.
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Oct 21, 2010
Bit stuck on this one, have seen alot about how to do it just cant seem to get it right. I want to have 2 text boxes with times in them.. at the moment i have them on click events then it just runs a Now for the time and fills the boxes from the system time. But then i want the 3rd box to find the elapsed time from the 2 times in the previous boxes but i just cant seem to figure it out
[Code]...
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Feb 19, 2010
Bit stuck on this one, have seen alot about how to do it just cant seem to get it right.I want to have 2 text boxes with times in them.. at the moment i have them on click events then it just runs a Now for the time and fills the boxes from the system time.But then i want the 3rd box to find the elapsed time from the 2 times in the previous boxes but i just cant seem to figure it out
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Nov 12, 2009
Ok lemme tell ya this is one toughie to explain. Basicly, I have a textbox with digital times on different lines, i.e
22:25
23:56
21:33
[code].....
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Feb 7, 2010
Im trying to change specific lines of text in a listview at certain times of the day. Heres what im using atm , but im not sure how to change the text in the listview.
If Now.Month = 2 And Now.Day > 6 Then
ListView1.Items(0) = ("My text here !!")
End If
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Dec 29, 2009
I know something like this exists, I juts don't know the right word to search about it, so basically I have a cosole application and if it runs twice it crashes. I wanna dispay a message: Sorry app alerady running.I can look at processes and see if my exe is there already running but that's much harder.
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Aug 26, 2011
I need a textbox where you can add a number and if you press a button that it will repeat the function of the button the number of times as in the textbox.
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Apr 4, 2010
I want my program to: send.sendkeys(textbox1.text) as many times as someone types in so for example if someone types in 20 it will send it like this:
[code]...
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Aug 5, 2010
I have a list of strings. For each string in that list, I want to prepend another string. I wrote a method to do it, but I was wondering if there was something already in .NET I could use to do this. It seems like something that could be built in, but I was not able to find anything.
Here is the method I wrote:
Private Function PrependToAllInList(ByRef inputList As List(Of String), ByRef prependString As String) As List(Of String)
Dim returnList As List(Of String) = New List(Of String)
For Each inputString As String In inputList
returnList.Add(String.Format("{0}{1}", prependString, inputString))
[code].....
It works, but I would rather use built in functions whenever possible.
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Nov 22, 2009
im wounder how to make a string error like that in vb so if the user write echi and not echo on a string it will get a error like a other variant of this if richtextbox1.text = ("ecoi") then msgbox("string error") but only on 1 string
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Aug 17, 2010
I'm going to start a project so what I need to do is make something that is kinda like an email. I am working with the register part of it because just like an email you have to select who to send it to.
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Feb 1, 2011
I read a text file and I want to make some changes and still save it as a text file.The change is to add color to some strings. How to do it?
1 2 3
3 4 5
4 5 7
Then
1 2 3
3 4 5
4 5 7
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