Add The "Time Zone" (is Declared As Double)
Jan 15, 2010
In my last "Question" today Re-ComboBox", I was told that I can add the actual TimeZones into the ComboBox using the following; ComboBox1.Items.AddRange(TimeZoneInfo.GetSystemTimeZones. ToArray) I was able to get the ComboBox filled with those information. However, I'm facing a problem in using those information for my "Sunrise Tme" program.
My problem is : I need to add the "Time Zone" (is declared as Double) - which I select in the ComboBox - to the Calculated Time (in GMT). I am unable to get the Value added to the GMT, ie the Value such as 2.5 or 5.5 or 6.0, because the information in the ComboBox is of several Data-type. Keyword such as "CDbl" didn't work. What mistake am I making?
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Sep 6, 2009
I have an ASP.NET application with a SQL Server back end. I am storing all my dates in UTC format and doing the appropriate conversions to the local time zone of the browser viewing it. One of the pages asks for a start date and end date (no times).
I am taking the start date and setting the time to 00:00:00 hours (midnight) and I'm taking the End time and adding a time of 23:59:59, so that the date range covers the whole day. Now what I'm trying to do is do a SQL query to do a search for records in this date range. The problem is, the data in SQL is in UTC time and the user is typing their dates and times in their local date and times. My quickest solution was to convert the date and time to UTC, then search the records. However, by doing this, I am to believe ASP.NET converts the given time and date to UTC based on the server time zone. How can I convert a date and time to UTC time based on the time zone of the user?
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Jul 22, 2011
So I currently have the following:
2 timers
2 labels
1st label is "Clock" this pulls the time from the users current time zone/local time
2nd label is "UTCClock" Which would be UTC time
Now I have this for the first label: clock.Text = Format(TimeOfDay, "hh:mm:ss tt")
Which would give the users current time zone/local time. As for the UTC.. how would I add in for the UTC time from where the user is located at? I did some searches.. but couldnt find what I was looking for.. IM pretty sure its not as easy as getting the users current time zone/local time.. So im assuming that Theres a "bit more" code into getting UTC time..
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Aug 24, 2011
I used .NET Framework 1.1 in C/S project before. Now I have updated the project to use .NET Framework 3.5 without modifying source code, but I have found that : the Remoted DateTime values can not be converted to the equivalent local time of a remote computer that is in a different time zone. In .NET Framework 1.1, the DateTime values can be converted automatically.
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Jan 14, 2010
How do I change the time zone using VB.NET 2.0? I found an article explaining how to do it in VB6 [URL] but I can't adapt it to .NET 2.0 - I just don't have enough expierience I guess.
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Jan 15, 2010
I'm trying to write code in .NET 2.0 to change the time zone - long story short its toautomate server deployment. I'm having a problem adding the SE_TIME_ZONE_NAME privilege I found code online to add the SE_SHUTDOWN_NAME privilege which I adapted into the following code:
Imports System.Runtime.InteropServices
Module ChangeTokenPrivs
Private Const ANYSIZE_ARRAY As Integer = 1
[code].....
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Jun 13, 2012
Basically I am looking for a means within a asp.net 2.0 (or higher) application, to identify a time zone and UTC offset for a specific location and date. I want to be able to look up the time zone rules using either city & state, Zip, or LAT & LON I have an event database that tracks location, date and time for the events. Times are recorder relative to the event and the records do not currenlty indicate the timezone for the event or whether or not DST is in effect. Recently, I have encountered a situation where I need to link several events across different time zones. What I am looking to do is:
first, record a master event, say for August 13 2012 at 8:PM in New York, NY 10021
Second I need to record a related event in Houston TX.
When I record the related event I want it to automatically populate the date and time relative to its local time time zone rules. To do this it needs to be able to identify the effective timezone and UTC offset for the master event as well as the linked event so that I can calculate the correct date and time to display on the satelite program. As a future update I would probably capture the time zone /utc offsets with each program so that I don't have to recalculate the master record each time I want to add a related event.
So far I have not seen a way from system.timezone or timezoneinfo to be able to look up a timezone and the effective UTC offset of a given date and location.
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Apr 10, 2009
i am using Visual Studio 2008, .net 3.5sp1 When i do the following oracle query on Oracle9i database
a)select NEW_TIME( sysdate, 'EDT','EST') as NT from dual;it works ok on Sql Developer and from vb.net
b) select NEW_TIME( sysdate, EXTRACT(TIMEZONE_ABBR FROM CURRENT_TIMESTAMP),'EST') as NT from dual;
c) select NEW_TIME( sysdate, to_char(EXTRACT(TIMEZONE_ABBR FROM CURRENT_TIMESTAMP)),'EST') as NT from dual;
Both b) and c) work okay on Oracle Sql Developer but fail when run via vb.net with error: ORA-01857: not a valid time zone
I want either b) or c) to be run successfully from .net I also tried replacing 'sysdate' with 'current_timestamp' and the results are similar.
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Sep 4, 2011
I have declared 2 variables as Double in my VB Code. Example:[code]Somerwhere down the code, after some internal calculations, the variables A1 and B1 have attained new values. Example:[code]Do I need to do a conversion of some sort in my program codes ??
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Mar 27, 2012
Today I investigated a logical bug in our software and figured out that this is related to the way VB.NET thread variables inside a loop.Let's say I have the following code:
Dim numbers As New List(Of Integer) From {1, 2, 3, 4, 5}
For Each number As Integer In numbers
Dim isEven As Boolean
[code]....
The problem is that isEven is declared but not assigned.In this specific case, it would be correct to write dim isEven as Boolean = false but I haven't done this.In VB.NET, a variable that is declared inside a for loop keeps its value for the next itaration. This is by design: [URL]but this is also dangerous pitfall for programmers.
However, until now, I haven't been aware of this problem/behaviour. Until now.Most of our code base is C# anyway, which doesn't allow the use of an uninitialized variable, so there is no problem. But we have some legacy code that is written in VB.NET that we have to support. So the best thing would be to generate a warning or even an error in this specific case.But even with Option Explicit / Option Strict this does not generate a warning / an error.Is there a way make this a compile time error or maybe a way to check this with FxCop?
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Sep 18, 2011
If i have a variable '12'
and a variable 'hello'
how can i double the '12' each time the variable is used?
What im trying to do is have a textbox which the user writes in a number, the number they enter then determines the amount of times a variable is written in a textbox.
so if the user were to put '3' into the textbox and click go, it would print hello12hello12hello12, how can i increase the number 12?
what i want it to do is look like this when the user presses go: hello12hello24hello36
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Mar 24, 2011
recommend a zone ocr sdk package. What i would like to accomplish is to automatically import a set of images, pdf or jpg, and then apply zone ocr to each image to extract data into a database. I have already looked at and spoken to Lead Tools and it does seem like they have everything that i would need but by the time you add up all the modules / addons needed, the cost is just too high for our small shop.
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Dec 1, 2010
I'm having a problem with my DataGridView. When I double-click on any column, with exception to Date & Time, the grid advances by 1. As you can see the 2nd row is highlighted in blue, I actually double-clicked on the first one, under "Sent By." (See attached image)
Here is my code
VB.NET
Public Class frmPickAssignment
Dim dteStart As Date
Dim dteEnd As Date
[CODE].................................
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Feb 24, 2011
The following is a screenshot of the problem: What can I do?
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Mar 25, 2009
used the WMI ChangeZoneType DNS command in C#VB.net before. I get an incorrect parameter exception when i try and invoke the changezonetype command. I get the dns zone that i want to change from the dns server (via query), set the zonetype to the appropriate uint value but am then getting the exception. I am trying to change the zone from secondary to primary and according to MSDN all the other values are optional (and as far as i am aware are needed when you want to change from primary to secondary) so i have not included them.
Below is the code that i am using....
For Each DNSZone As ManagementObject In mgrZones
mngrZones = DNSZone.GetMethodParameters("ChangeZoneType")
mngrZones("ZoneType") = System.Convert.ToUInt32(zoneType)
[code]....
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Mar 16, 2009
Adding and deleting a web part zone at runtime. I have tried all possible ways through internet but no luck.
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Jun 7, 2012
I'm currently working on a Visual Basic program that should be able to show CPU temperatures.To do this the cleanest way (in my opinion), I would like to use the Windows Management Interface (WMI) using
MSAcpi_ThermalZoneTemperature.Now, to my understanding, this requires that motherboard (MOBO) manufacture exposes these values to the WMI, which almost nobody actually do, but if they do, a "device" should show
up in the device manager called ACPI Thermal Zone under System Devices (let me know if I'm wrong).
As I would like to test my program and my current MOBO (Gigabyte GA-H67A-USB3-B3) doesn't seems to expose CPU temperatures to WMI (no
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Jan 27, 2011
I have a situation where I am handling both single & double mouse click events on a form. In both cases something has to be loaded, however when a double click occurs, I do not wish to execute the code attached to the single click event.Is there a way to intercept the mouse click's and check if double or single and then execute the right event appropriately?
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Jun 8, 2011
Using any version of .NET how do you find out which zone a particular share is classified under. I am having a problem identifying if a share where my referenced dlls reside is in the "intranet zone" or "internet" zone relative to some user machine that is running my .NET application. I suspect this is a problem because I am having a problem accessing referenced dlls from a share on some machines but not others. How can I tell which zone .NET is classifying that share in so I can adjust permissions accordingly?
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Nov 7, 2009
I am developing an application for an emergency services organisation using VB 2008 that will enable users to select a map zone of a city centre and plot icons onto it, then save/export the layered map with icons as an image.My problem at the moment is that I am struggling developing the point where the user imports in the icon (for example, a flame icon where a fire started) and drags it around the map within the picture box to the required area.I want them to be able to select their desired icon from a series of commandbuttons and for the icon to 'appear' on the picturebox and be enabled to be dragged around and dropped as required. The organisation already has such a thing working in Microsoft Word (!) and that uses the ActiveDocument.Shape.LoadImage function on a pushbutton to import the icon and then it is placed on the map as required, but this is really unreliable for them.I dont even know if you can layer images onto an existin picturebox within an application in this way and then export as a flat image.
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Nov 17, 2010
I have a htpc project that I am working on. The main program loads dll plugins which are basically other win forms. On each of these forms, including the main program, I use a picturebox (a double buffered picturebox) for the background image and then draw everything on it by hand. Whenever I load the form from the dll and show it, I get a weird flicker. It looks like it is the previously used double buffer. Is there any way to clear the background double buffer before the flicker? Or am I going in the wrong direction?
Here's a couple of videos of the problem:
[url]
[url]
Notice the black screen with the white lines on it or the flash of the desktop after I click "Movies." How do I get rid of that?
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Aug 15, 2011
For greater accuracy I should use a Decimal instead of a Double ( so I've been told ). Why then have Microsoft chosen to use DOUBLE for most of the functions that return a floating point value in the Math Class?
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Apr 4, 2009
In vb.net, im using objWriter.Write("playerA= "x"")as you can see im using double quotes inside double quotes, how do i skip it so the error doesnt show up?in php you make an "" to skip the string like ("playerA = "x" ")
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Aug 11, 2010
When i use VB6 i get the following outputs
961.605 * 100 = 96161
936.495 * 100 = 93650
929.295 * 100 = 92929
NOW..... When i do the above in vb.net 2005 i get the following
961.605 * 100 = 96160
936.495 * 100 = 93650
929.295 * 100 = 92930
How can i get the same output as the VB results. And i have tired it ! Type conversions, math functions, everything i can think of to get the same VB6 output !
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Aug 11, 2010
When i use VB6 i get the following outputs
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Oct 27, 2009
I've asked this question before, and so have many before me, i have done extensive research on the topic and stil no help. Maybe this is some kind of secret info. shared only amongst top programmers. Bt how do you really, trully double buffer a form, aside from setting "Double Bufferd" to true, which doesn't work in most cases, I want to know how do companies lyk Microsoft and Symantec, prevent flashes on big applications such Word and Norton.
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Feb 23, 2010
If I try to display a command line argument that has double quotes around, the double quotes are always stripped off. How can I avoid this?
for example, the argument is "c:xx.txt" and this displays c:xx.txt instead Console.WriteLine((My.Application.CommandLineArgs(4)))
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Mar 25, 2009
I have a CSV file where the values are in double quotes and seperated by a comma. I'm getting incorrect data if I try to seperate the string with my Split function. How do I do it?
Example:[code...]
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Apr 12, 2011
I've been just making random programs trying to get the hang of the new language this time I was making a leap frog game where it switches back and forth beetween frogs every time a button is pressed. It also checks if the frog can land in the text box above the button pressed, if there is another frog there a message box will pop up saying sorry space is filled other wise the frog should land there.
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The error message says "Conversion from string "frog1" to type 'Double' is not valid." I understand what a double is but I've tried And If and that causes a bunch of errors.My Question is whats wrong with this cod and how can I make a double if statement???PS I did try to make an array to shorten this but thats in a different fourm will post URL later
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Jun 30, 2009
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I got some of the code from my other thread. I had over 100 textboxes, and I wanted a loop that got all of the text from the boxes, and copies it to clipboard.What is wrong with the syntax?
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