Below is the code i am using to read and update the system environmental variable. This code is working fine when i am executing .exe on Local Machine. I am getting problem when i try to access this .exe from Browser(using citrix i am doing this) and invoke. when i invoke from browser its going to catch block and displaying MsgBox("Unable to Create LDAP Key.
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I have code, shown below, that works all except for 1 thing: The variables being passed byRef get passed, but once modified in the else section of the "if me.invokerequired" code of RecordData, the variables are never updated in the calling function. To reiterate, the calling function does not receive the updated data that is in the variables custid and amt.When debugging, I see the data change in the else section of "if me.invokerequired", but once it returns from the callback the data is missing.[code]
View 15 RepliesWe have a couple of applications at work that need a reference to the license server set in the User Variables under the Enviroment Variables on the windows xp client machines(system properties, Advanced, Enviroment Variables). The problem is that both applications needs a reference to the same variable name and you can't have two with the same name. What i intend to do is to create a simple windows application with a button for each application that deletes the variable item present, adds a new variable item with the value needed for that application to be able to run and then run the application itself. This is just a temporary fix until we get a more permanent solution. The 'GetEnvironmentVariable' class in vb is not able to add or delete a item, maybe the WIN32 API could do the job.
View 2 RepliesI wanted to know if its possible to use VB.Net to create a USER Variable in the Environment Variables of the Operating System.
View 2 RepliesI am looking to read a text line from an ini file which may contain strings like %systemRoot% or other environment variables. I was able to write small function to parse such strings as long as it appears only once in the path. for example my fuction can parse %systemroot%system32 and return c:winntsystem32.however if the string contains %systemroot%\%username% i am not sure how to handle that.
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I wrote a DLL a year or two ago on my old computer that worked well for a long time. I moved on to other things, then came back to it recently and discovered that the code doesn't run on my new computer. The problem seems to be with this line: [code]
View 4 RepliesI have an installer, and it installs some native dll's along with the program.The dll's are in a separate folder, which I added to the path environment variable.That was done successfully, and the variable shows up in path if I check the windows system settings.
However, if I start the command line program/service, it says dll's not found...I check the environment variable path with the set command, and my folder is not in there.If I do
SET path = %path%;my/folder/here/
And start my program after that, then it works.According to this MS KB article this is because the computer would need to be restarted.unless I do
SendMessageTimeout(HWND_BROADCAST, WM_SETTINGCHANGE, 0, (LPARAM) "Environment", SMTO_ABORTIFHUNG, 5000, &dwReturnValue);
Now I did just that, using the below code, but the error message persists. My folder in %path% is correctly spelled, I checked that.
' http://www.pinvoke.net/default.aspx/Enums/SendMessageTimeoutFlags.html '
<Flags()> _
Public Enum SendMessageTimeoutFlags
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This was my code .
Private
Declare
Function addelements
Lib
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meeting the requirement i.e procedure to set environment variable and use/get that in my code. make necessary changes in my code accordingly.
I have a Windows service running on Local System Account. The service connects to a remote webservice, and donwloads a file.Now I installed the service in an environment with a proxy server (http://proxy:80"). The result is that in the eventlog I get error:"unable to connect to remote server". When I start the service with a (test) account, everything works fine.Can someone tell me how I can handle a proxy environment with a service running under local system account?
View 4 RepliesI have an application that has several forms in it. On form #1 I am declaring the variables:
Public payPeriodStartDate, payPeriodEndDate As Date On form2 I have this:
Public Class Form2
Public payPeriodStartDate, payPeriodEndDate As Date
Private localVariable As Integer
What I'm trying to do is to call payperiodStartDate and payPeriodEndDate and to use those variables in the following query:
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In a form I am designing I have a picture box. I want this picture box to display an image from My.Resources. However, the picture to be displayed will change based on conditions. I have written a statement to store the name of the picture I want to call in a string variable called strPicName. So how do I properly use the string variable to get the line of code below to work?[code]...
View 3 RepliesI have windows application in which I get currently windows logged in username using following environment property
System.Environment.UserName But when I ran application using visual studio, it works without any problem. But when I publish application & try to run it, it get System.Environment.Username value as nothing.
cause of this issue? Or any other alternative to get current system logged in username.
I am developing an application where I need to make use of multiple values during the run time. These values are configuration setting of the application as specified by user and are stored in a database (more than 50 in number containing strings/boolean and numeric). I have defined a structure to contain all the variables that will store this information. At start of app, I retrieve all values from database and fill the structure which i can use when required. I am wondering if it is a good idea to declare too much of variables and keep them alive during the run-time as compared to retrieving the values from database every time it is required?
View 4 RepliesWhat are the variables for The system drive (most commonly "C:") and system directory (Most commonly "C:WINDOWS")
View 4 RepliesI am trying to launch a third-party program from my own. I have done a quick search in Program Files and Program Files (x86), and I just realized that the path returned by getenv("ProgramFiles") actually depends on whether I am running in x64 or Win32.How can I search (both in c++ and c# or VB.NET) both Program Files folders, using environment variables and not hard-coded names - since regardless of the version of my program running on the user machine, he might have the other one installed in a different version ?
My code now: in c++:
fs::path root_directory = fs::path(getenv("ProgramFiles"));
// and then I change to
root_directory = fs::path(getenv("ProgramFiles(x86)"));
in VB.NET:
System.Environment.GetEnvironmentVariable("ProgramFiles")
I have VB6 Dll which I am referencing in vb.net ,I am calling the following function in it. It working fine in developemnt environment but not in deployement environment.
Error Method not found: 'Boolean MyUtils._MyUtils.LoadMyObjectRecords(ADODB.Stream ByRef, System.Array ByRef)'.
I am trying to find the time-outs the user has set for the PC similar in function to the command line:
powercfg /q SCHEME_CURRENT SUB_SLEEP but I want to do something a bit more elegant than firing off a command and parsing the values out of the captured output. I've managed to source a number of element examples from the net and cobble parts together into a program.
I've got a fair way but am now stuck on the call to powrprof.dll - PowerEnumerate function. I've checked it on Microsoft's site and my call seems to be okay yet it still fails with 'System.AccessViolationException was unhandled'
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I am trying trite code that will copy information from an infopath document to a word document that is being used as a template containing only a header and footer. The only reason for the code is becausthe footer (not optional) is too long to be handled by Infopath (which has a 255 character limit) and word can hold the full footer. Following the guidance on
Public Sub CTRL1_5_Clicked(ByVal sender As Object, ByVal e As ClickedEventArgs)
Dim appWord As Word.Application
Dim wrdDoc As Word.Document
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How would I use a system variable such as %userprofile% in a string in VB.net? I have this in my program, but calling the system variable directly isn't working
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I Have just been watching a video on throwing Exceptions. Are you supposed to throw System.Exceptions from within your custom classes. to the calling code, Which other way can they communicate. I have read in several places it is bad practice to throw SystemExeptions.
View 3 RepliesCan VB 2008 use the system variable %1 that contains what filename a program was opened with? I am making a new app that when you click a .exe file and select the right option, it will edit the registry but I need to be able to keep the filename that I right clicked on so that I know what registry value to edit, is this possible?
View 1 RepliesWe just spent 300 man-hours fixing a buggy application in the field. It all came down to calling Application.DoEvents (re-entrancy problem).This was not caught in design reviews, code reviews.The code was inserted two years ago with the first version; the application was always "flaky" but recent changes exposed the re-entrancy problems to a greater degree. This incident is the second time in our organization that Application.DoEvents caused failures and multi-man hours of debugging.It was discovered in this case by simply noticing the call,buried way down in a complex event handler for an asynchronous task.What do you suggest to prevent this issue from happening again:
Add checkin gates to source control?
Developer training?
Code Analysis rules (why is this not already a built-in rule?)
How to I enforce a coding practice?
I have problem in calling DLL file in VB.Net that I had Created it in C++... it give me this error message: "An unhandled exception of type 'System.EntryPointNotFoundException' occurred in test_dll_1.exe. Additional information: Unable to find an entry point named 'add_1' in DLL 't1.dll'."
This is my code in C++ (header file)
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The one in the main
#include "header_1.h"
double add_1(double a, double b){
return (a+b);
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This code only for creating dll and I did created it correctly and i had tested it in c++ and it did works.... but in the Vb.net I had no luck with it...This is the code that I wrote it in the VB.net
Imports System.Runtime.InteropServices
Public Class Form1
<DllImport("t1.dll")> Public Shared Function add_1(ByVal a1 As Double, ByVal a2 As Double) As Double
End Function
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And, I did put the .dll file in the bin folder, but also with no luck...
How do one create System Level environmental variables manually. I just installed a GeoSupport Desktop Edition software and in the document it is mentioned that I need to create system-level environmental
variables for PATH and GEOFILES manually
Add the location of the GDE executables to the system-level environmental variable PATH.Normally this means adding C:Program FilesGeosupport Desktop Editionin to the PATH.
I Have a problem with vb.net. Basically I created an application that communicates via system.net.socket. on the server side of client connect, and a thread checks whether there are new incoming data. if there are data, puts them in a few tread declared variables, together with the "index" of the server. once this is done through "INVOKE" calls a routine that checks the incoming data andperforms an operation based on the data. I'll see what I do not work
Dim returndata As String = System.Text.Encoding.ASCII.GetString(data)
TextBox1.Text = ("DATA : " & returndata & "Socketindex =" & socketindex.ToString & " Index=" & index.ToString)
But that does not appear in the texbox, appears only "returndata", the rest c 'is same thing with the messagebox, individually, can display a messagebox with variable,but when I try to make a messagebox that displays them together, the texbox same thing!
And the same thing if I want to compare them with each other, for example
if index
= 0 then msgbox ("OK")
It does not work ...
Last year (2010) I came across a FANTASTIC command that allowed me to take a string of variables with a common delimiter and break it all back out into separate variables (possibly an array) with one statement.
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As long as the delimiter was a unique specifiable character, this one-statement command could break it out into elements. my memory and point me in the right direction.
I define some global variables of a class as follows:
Private Class MyClass
Private var1 as Decimal
Private list1 as List(Of string)[code].....
But I found that after this form is closed, all above variables, var1, list1, list2 still exist in memory. I thought they should be collected by gc since the form is already disposed as I confirmed.
Add: I have monitored half an hour after the form is closed. But these variables are not collected by gc. I have an automatic update procedure on the form which uses above variables.Since the above variables still hold values, the automatic update procedure is always called which causes exception. (One quick fix is to check if form.isDisposed in update procedure. But I do not think this is elegeant. Besides, these variables occupy memory.)
We have a windows service running under a network account that calls and runs an ActiveX exe. The exe is running under the local system account, not the network account of the service.
View 1 RepliesDoes the memory used in declaring variables are reclaimed by the OS when these variables go out of scope?Does the memory used be released by setting thier value to nothing? if not, then how can I force the garbage collector to run or excecute at a certain/desired time..How about in Windows Forms..How can we make sure that the memory used in initializing and showing forms be released if those forms were closed?
View 13 RepliesQuestion 1: What is the difference between "Background Worker" and "Worker Pool" as indicated within the MSDN samples provided.
Question 2: I noticed while using, AddressOf _Function_, variables cannot be passed; what would be an efficient solution to this?
Question 3: While using multithreading is it required to invoke before setting variables, or only form properties?
Question 4: While using System.Net.Sockets is it safe/efficient to use Application.DoEvents while waiting for new data; or would be using a Do While loop be fine without DoEvents since the action would be multithreaded? Note: there can be up to 2000-3000 sockets in use at a time.