How does one check to see if the system time is equal or not equal to a specific time? So, say I want to perform an action if your system time is between 6pm and 6am. Or something similar?
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In the following LINQ query, i would like when the Loc=Locale.Gr all the records with GrID=100 returned and when the Loc is anything else all the other records with GrID <> 100 returned.How can i achieve this one? I tried something like the following, but it is totally wrong.
PrivateSub Test(Byval Loc as Locale)
Private Const GrID as integer = 100
Dim Query = From c In Mob Where c.CountryID = IIf(Loc = Locale.Gr, GrID, <> GrID) select c
End Sub
[Code]...
I would like to compare dates (not times) for 2 datetime variables. I get one of the dates from database as follows and comapre it with yesterday.How can I do it?
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How can i check a file's md5 if it's equal to one in a listbox?[code]...
View 3 RepliesI want to check If a variable is equal to some values or not, for example:
if a = 1 or a = 5 or a = 7 or a = 10
is it possible to do it like sql:
if a in (1,5,7,10)
Is there a statement to check if a does not equal b? or is it necessary to
vb
if a = b then
'blank
else
[code]....
Im trying to use this code to check if files in a directory equal to the text typed in these textboxes. The files end with extension ".ldb". The code doesnt seem to work
View 11 Repliesi am using while loop. i need to check whether the previous line is equal to next line ...
Try
Dim r As Integer
r = str.IndexOf("action = LGN; description = Success")--- i need to check next line also same content[code].....
Is there a way to find out the system time format? (If it's 24hour or 12 hour)
View 10 RepliesI want to verify if the current system time falls within the specified time range between 7:30pm - 9:00pm. If it falls within the specified time range then display a message.
View 7 RepliesI tried this code to check if the data in textbox1 not equal to any data in column name, so insert the data that in the textboxes to the table1. Esle.. do another thing. But it didn't success with me.
Code:
Dim conn As New OleDbConnection()
conn.ConnectionString = "Provider=Microsoft.Jet.OLEDB.4.0;" _
& "Data Source =" & Application.StartupPath & "DataBaseName.mdb "
[Code].....
Basically i'm trying making a task manager program for myself. I want to know how I can display a message box and or play a sound when system time = time displayed in listview. I have used a dropdown box for the user to select which option they would like to select - sound or message box to popup. The data for the task will be stored in a listview box. I want it so that when the date and the time is = to the date and time set for the reminder the action will follow.Here is my code so far:
Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click
Dim notext As String = ""
If TextBox1.Text = notext Then[code]....
I'm using
Days = Dat2.Subtract(Dat1).Days
where
Dat2 = today
Dat1 = installed date
to trace the days of a program installed in user's computer.However, the user can changes the system time of his computer to a advancing date. How can I get a SNTP time from internet to solve this problem?
When I run my app at first its keeps time accurately for the first minute or so there after it starts loosing seconds, and by the end of the day its minutes behind.I've created a class called ServerTimeTimer that has a timers.timer object that elapses every second and adds a second to a dateTime variable, and a property to retrieve the date time.[code]
View 5 RepliesThe Now() function in VB.NET returns date and time which is different from the system time that I see on the right-bottom on the notification bar. It is 15 hours slower than the system time. Has anyone ever met this problem? I'm using .NET 2.0.
View 2 RepliesI have a program that allows a user to select a program to run at a certain time for a specific amount of time all choosen by the user. Everything works with the exception of if my program has launched the other program, my program become non-responsive. Meaning I am not able to look at that window again. Not that one really needs too, because when time is up my program closes the program it opened, then closes itself. I just want to be able to see my program when the other program is running. how to do this and perhaps drop me some links, that would be wonderful. This is what I have coded, but like I stated there are no code errors.
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On winxp sci. calculator when you press 9x9=81 you get 729 when you press = again.How can i add this feature to this code i already have.
View 2 RepliesYesterday I asked why a adding 10 times 0.10 to a double is not equal to int 1;in VB Why (1 = 1) is False.I got an excellent answer. The overview is because:Floating point types and integer types cannot be compared directly, as their binary representations are different.The result of adding 0.1 ten times as a floating point type may well be a value that is close to 1, but not exactly.I can see the reason why now. However, if I do something like:[code]In this case I really obtain equality between double 1.0 and int 1. I thought then that double were only approximations so I would expect d to be somehow a value close to 1 as in the original first question. Why is not a good idea to compare directly different data types (in this case double - integer) and why I this time I obtain equality ??
View 2 RepliesI have a Date variable startdt and a String variable hdnsdate. Suppose if startdt has the value in the form 3/1/2012 and hdnsdate has the value in the form 03/01/2012. Than how can i compare that these two dates are equal in vb.net. In if condition of my program i want to do this check. In case the two dates match move out of if loop otherwise go into the if loop. E.g A sample in C# what exactly i want.
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I'm a little foggy on System.Type versus an actual class type (like Object or XmlDocument) in .NET... will this code correctly determine if the type of a particular object is equal to a class I specify?
// Given "myObject" (unknown type), and some class type (let's say "MyClass")...
If myObject.GetType.Equals(MyClass)
If TypeOf(myObject) Is MyClass[code].....
Which one is correct? Bonus points if you can provide some information on what a class identifier is versus what a System.Type is. :)
Note: The language doesn't matter here, VB.NET or C# is fine, the code above is pseudocode.
Why does the first if statement evaluate to true? I know if I use "is" instead of "=" then it won't evaluate to true. If I replace String.Empty with "Foo" it doesn't evaluate to true. Both String.Empty and "Foo" have the same type of String, so why does one evaluate to true and the other doesn't?
//this evaluates to true
If Nothing = String.Empty Then
[CODE]...
I'm trying to set a text box equal to a value in dataGridView and I keep getting an error index out of range.The dataGridView is data bound to a stored procedure. When I move the text box setting to initiate after the form loads and a button is pressed it works fine; however, when it tries to automatically load after the fill command it errors out. The following code is what I have:
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I want to test if an image in a picturebox is the same to another image in a picturebox?Also, i get my images from a listBox.I need to use i as a conditional in an if statement.
If (picBox2.Image = picBox1.Image) Then
' code ...
EndIf
[code].....
I would like to set stringa and stringb to be equal and then clear stringa like so:
Dim stringa as String = "abc"
Dim stringb as String
stringb = stringa
[Code]....
However this code sets up a link between the 2 variables, so when I clear stringa stringb is also cleared.
I am trying to write an IF statement that checks to see if a certain String variable is not equal to a certain value. What is the best way to do this?
Method #1
IF NOT(Nametxt.Equals("Fred")) Then
x = 3
[code].....
How do I declare/define a ResourceManager in the following code so it doesn't equal Nothing when it reaches rm.GetString("Magnitude") in the following code? My.Settings.. is returning a valid string.
Imports Gigasoft.ProEssentials.Enums
Imports System.Resources
Imports System.Configuration
[code]....
This makes no since to me I have a textbox that the user will put in information that I need to cut off so I wrote this code
txtMatID.Text = Trim(Mid(txtMatID.Text, 1, (InStr(txtMatID.Text,
"-") - 1)))
The user will imput a number value then a - then some words after that. I just want the number value. But when I try to debug the app it breaks on this line of code with this error. Argument 'Length' must be greater or equal to zero.
In my decryption statement I am getting
Argument 'Length' must be greater or equal to zero. is this statement wrong
DecodedStr = Mid(DecodedStr, 1, InStr(DecodedStr, Right(DecodedStr, 4)) - 1)
I disabled an exception because it was bugging me i couldnt find an intermittent error. My program reads textmessages from a phone, however a problem sometimes arises, and I am slowly pinpointing the areas of the code that cause issues. I have found however that it is sometimes here:
'Get a string of certain length
Shared Function GetString(ByRef PDUCode As String, ByVal Length As Integer) As String
[Code]....
check to see if length is zero AND thereofre try again in a moment, (because it usually works second time for some reason). I can think how to get around the exception
what is the equal vb.net form event for vc++ ON_MESSAGE event
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