Temporarily Elevate The Privilege Of VB Code?
Mar 8, 2009
My VB program creates a file on a NAS drive via the SaveFileDialog component in a different user context than the person launching it.It works because the person who runs my ClickOnce deployed program uses RunAs from the program's exe (thereby bypassing the ClickOnce pre processor). The problem is that the program extensively supports drag and drop which doesn't work between the User and RunAs contexts.
The program is a VB 2008 Express Windows Forms Application running on XP workstations with peer-to-peer (workgroup) access control. i need to execute only the SaveFileDialog component with impersonation via the user account we've been using with RunAs. Something along the lines of what RunWithElevatedPrivileges accomplishes in SharePoint Services. This is not happening in a hostile security environment - so, the solution needn't be impregnable.
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Apr 25, 2011
In my managed VB.NET code, I am able to write a file out to my desktop. Although, the statically referenced unmanaged code is unable to. I have hunted all over MSDN to find out how I can elevate the security permissions for this library method, but am unableto find anything.I declare the method as...Declare Sub WriteFile Lib "DataLog.dll" (ByVal fileName As String)Although, it throws an exception due to being forbidden from writing to the desktop. Is there an attribute
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Apr 23, 2009
I have built a method to pull some UserProfile information out of SharePoint. It works great in C#, but I can't figure out how to convert one part of it to VB.NET. I'm not that great at VB but usually the basic code converters online get me past any problem I have.
The problem is concerning the SPSecurity.RunWithEleveatedPrivilages section below. Does any one know how to implement the delegate code in VB?
[Code]...
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Jan 6, 2009
i m using wmi to get connected with remote pc with admin privilege code works fine on around half of machines in my domain but in case of other machines just throw rpc server not available error i google to solve this problem but all in vain
i tried with
1. disabling firewall application
2. allow dcom 135 port for exception
3. checked wmi services are running
but i m in dark side and i really give up to this problem of "RPC unavailble" i hv wasted few days in this,
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Sep 1, 2010
I am using following code to get a directory of files with a particular extension. It throws an error that you donot have administrator privileges.
CODE:
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May 27, 2012
I want to use netsh wlan set hostednetwork mode=allow ssid=YourVirtualNetworkName key=YourNetworkPassword
in my Vb.net application which requires administrative privilege in Windows 7. Each of the time I have to click "Run as Administrator" from the executable files context menu to execute the file. Is there coding anyway so that I can open the program with Administrative privilege?
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Dec 5, 2009
how to shutdown / restart with a non-admin acount using vb net code? logof is not needed because the logoff is alow!
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Nov 21, 2011
I'm trying to Export a RDLC report into a PDF file and email it as an attachment with the click of a button.
My issue is that I get A required privilege is not held by the client error in the following code.
On this line Dim fs As New FileStream("C:\TEST", FileMode.Create)
I Have Administrator Privileged on a Vista Machine.
Dim warnings As Warning() = Nothing
Dim streamids As String() = Nothing
Dim mimeType As String = Nothing
[Code]....
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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 22, 2010
I'm trying to hide 5 to 12 buttons on a form until a screenshot is saved to the clipboard. I have it set right now so the user clicks a button(btnSavePDF) and then whichever buttons are visible are made not visible. But I haven't a clue how to restore just those buttons. I'm trying to avoid restoring them all unless they were all originally visible.
[Code]...
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Jun 24, 2009
I wrote the code and it runs through it perfectly, the problem is that it will only save it to the database temporarily. So once I close down visual studio for the night and come back to it what's been entered is gone. It's not a published program still in debug mode but I've not run into this before. I have another program I'm working on that I'm running purely in debug mode and it works flawlessly. The code between the two is the same cause I just copied it and changed the parameters. Any ideas? I'm using an sql mdf btw.I should clarify, don't know if it matters or not, that the DB that is working is in SQL server whereas the DB I'm having trouble with is a mdf that I added into the program.
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Nov 30, 2009
Ihave created a system that allows an IT manager to log faults and assign them to available technicians, basically, you select a member of staff, a technician and describe the fault and then log it. But what I want to be able to do is take the technician out of the table until the fault is cleared and the technician is free. I have started this process but my head is spinning and I am not 100% where to turn next. I currently have a Busy field in the technician table and I have the code that allows the technician's busy status to change to 0 instead of 1 but I cannot for some reason get it to turn back to 1 when I clear the fault.
I think I may need some sort of If then statement like
If datagridview2.currentrow.cells(4) = 0
Then datagridview2.currentrow.remove
I've been using a FileSystemWatcher to detect changes and this is the code that changes the technicians busy status to 0:
Dim BusyM1 As String
BusyM1 = DataGridView2.CurrentRow.Cells(4).Value
sql = "update Technicians set busy=1 where busy='" & BusyM1 & "'"
Dim commandUpdate As New OdbcCommand(sql)
[Code] .....
And here is a code I tried to use to return the status back to 1 for the technician busy status
Dim NotBusy As String
NotBusy = DataGridView2.CurrentRow.Cells(4).Value
sql = "update Technicians set busy=0 where busy='" & NotBusy & "'"
Dim commandUpdate As New OdbcCommand(sql)
[Code] .....
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Mar 29, 2009
I've created an Excel COM add-in that has several forms. The application has the following forms:
FormA (Modeless): Excel.Application is parent
FormB (Modal): FormA is parent
FormC (Modal): FormB is parent
[code].....
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Mar 5, 2009
I have a graphics application I'm working on that displays full screen so there's no control in the upper right to close the application. I have it set up so that a right click closes the application but I noticed that a right click menu comes up on the desk top after my application closes which is no big deal. You could ignore it but I was wondering if there's a way to turn off the right click menu so that it wouldn't come up though I would want it to be enabled after that first click that closes my program.
So the right click would close the program disable the right click menu and then enable it again so that the next right click would show the menu. Haven't come up with anything on searches. I could use something else to close my application but if there's a convenient way of doing this I would like to find out what it is. I have almost every key on the keyboard doing something though I haven't used F1 through F12 at the top of the keyboard. Maybe I'll use F1 if I don't find out how to do this. How to use F1 to F12 to close or do something?
I've been using keypress events to do a lot in my application but for
Select Case e.KeyChar
Case "F1"c
isn't valid.
I tried other things. {F1} etc. I have option strict on. Thus the little c is necessary for characters like "a"c or "b"c.
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Nov 13, 2007
I'd like to temporarily disable events for a given control. For example, the SelectionChanged event on a combobox might be used to update a display every time the user changes the combobox... but while I'm filling the combobox with values, I don't want the SelectionChanged event to be firing over and over... I need to disable events while the combobox is being populated. How do I do this?
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May 24, 2012
how to temporarily save the user input to the pc he is using then save to another pc in the network later. Our LAN sometimes disconnect or there maybe power interruptions and I don't want that the input of the user disappear due to disconnection or power interruption. What is the easiest way to accomplish this?
Here's what I'm working so far. The data saves to another pc.
Imports System.Data.SqlClient
Public Class formGrammarI_Page01to04
Dim db As New EPTR_DataDataContext
[Code]....
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Jun 30, 2009
I need to use a virtual drive (ram disk) to save data temporarily. Which ram disk program is good to use.
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Feb 2, 2010
I'm trying to temporarily change the value of i in a for loop because I've got a problem when entering data into excel.Every second line is has the .marketName "To Be Placed" so they appear blank like this.
DATA 1
DATA 2
DATA 3
I want to change the value of i so there isn't a blank line between each entry.
vb.net
Private Sub BHorse_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles BHorse.Click
Dim oMarketsReq As New BFExchange.GetAllMarketsReq
Dim oMarketsResp As BFExchange.GetAllMarketsResp
[code]....
It seems to get into an infinite loop as the way it is, even after I change the value of i back.
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Jun 19, 2009
I need a way to programaticaly block and then later unblock specific websites based on their domain names. I only need to block browsers (so http & https would be sufficient, I guess?) but not just Internet Explorer, it should also work for anyone trying to run Chrome or Firefox too.
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Jan 4, 2011
I created a database (.mdf) file. I added data to it after running the program in debug mode. When I closed it and opened it up again, the data I got was stored and loaded again.I closed my whole Visual Basic Express program. When I opened it up again, all the data had disappeared.
Can you tell me what I am doing wrong with the program? I can't get queries to work either. It worked when I used the NOrthwind dataset this past weekend but it is not working when I use my own or empty dataset.
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Feb 22, 2011
How can I disable temporarily a module ? If it cant then how can I disable the sounds of my form? I have a mouseover, hover and click event sound in my form and I want it to be disabled in my options. I make a module thinking that if I can disable my module but the use of a checkbox then it might work but if it will not the how can I do that? im thinking also of a simple if statement but I prefer simplier ones like disabling my module.
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Jan 21, 2012
I want to prevent file opening (temporarily) on certain files. I've tried encryption, which is fine, but a bit slow for my purpose. The actual end product doesn't have to keep some computer hacker type from getting in, just the lay user. I was wondering if it was possible to encrypt only part of a file and reverse this after or what options I had.
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Mar 19, 2010
I have a very long running syncronization task that cannot be interrupted by the screen saver or aggressive power saving modes. I want to make a single api call to stop power save mode and then restore it once the task is done.The following code is peaced together from various other posts but it has no effect on XP's power management settings.[code]
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Aug 16, 2010
I have scoured the net for help with this problem of temporarily disabling mouse clicks on a VB Net form and have not been able to find a solution that works.
I'd like to prevent users form clicking on a form when i'm doing some background processing. To me it sounds simple in theory but apparently its not.
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Mar 11, 2010
I have scoured the net for help with this problem of temporarily disabling mouse clicks on a VB Net form and have not been able to find a solution that works.
I'd like to prevent users form clicking on a form when i'm doing some background processing. To me it sounds simple in theory but apparently its not.
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Jan 13, 2011
Im drawing a chart based on values from a database as an image in a picturebox. I can then add lines and circles etc in the picturebox, so as to highlight areas in the chart.
The next step I would like to do is to have temporary lines and circles, so when I move the mouse, the circle grows or shrinks and only when I release the mousebutton the circle is assigned to the chart picturebox.
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Jul 17, 2011
So I have been working on some code that is a supplement to a video game that I play (doesn't really give me an advantage, I'm against cheating) as recreational programming to get me to learn more things which apparently is working immensely.The video game is called DoTA which is a custom map in Warcraft 3.
What I am trying to do is to make a program that can manually click the skills when the user presses the key they bound to that skill. This allows for more precise skill usage as keybindings in the game change randomly which causes chaos.
I first tried using mouse_event to move, click down, click up, return back to original location. This worked, but I ran into a problem that occurred if mouse movement by the user was happening while the code was being ran. The problem mainly would cause the mouse to move off the skill before clicking or even after the mouse down event.
So then I looked into SendMessage and PostMessage but it took a while before I could fully grasp everything about the functions mostly due to many examples posted online being different from one another as far as the declarations.
I now have matched the output that happens according to Spy++ when I actually click the mouse myself with various PostMessage and SendMessages, but am still having an odd problem:
I provide the coordinates to click on say Button 1. Spy++ tells me it is clicking it properly, but I do not actually get a click. However, if I manually move my mouse over that button, even on the very corners of it, and then press the key, it clicks it (although it also seems to work on one other button in the game.) Other than that, it will not click any other button besides the one that the coordinates are over.The game does not have any child windows so it doesn't seem like I can get the handle of the actual buttons themselves.Here is what I have as test coding to figure this all out (the sleep time in between mdown and mup is because the game doesn't register if clicked too fast):
Option Explicit On
Imports System.Runtime.InteropServices 'MarshalAs, Marshal
'Imports System.Reflection 'assembly
[code]....
I was thinking that if there was a way to maybe pause control from being able to move the mouse that I could just revert back to the original mouse_event code as well, but I haven't found anything that can take away control like that (actually, I wouldn't even want that posted TBH as it could be used for malicious stuff).
EDIT:The code at the bottom is just stuff I was using to match what happens when I actually click according to Spy++.
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Oct 21, 2009
I am writing my own script for a simple calculator that determines if a number is prime, and its prime factors.[code]The loopcount = compare - 2 means I want the loop to be 2 less than the square root of the answer so that when do a descending calculation (loopcount = loopcount - 1) it doesn't see if 1 or 0 is a factor of the answer. for the calculations after that, I want, every time n1 = n2 (a whole number factor of the answer), I want to report those results to a text file (n2 and n3) in this format "(n2, n3)" then go to the next line. and continue to execute the loop until the loopcount is zero. Currently, when I run the code, the application closes when I click the prime button (button that runs this code) and I don't know why. This is my first semester in school, and have never coded before, so I am a definite laymen with code, but I really really want to learn it (hence why for fun im just creating algorithms for different things).
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May 1, 2009
I have a sub that i wrote only to temporarily fill the database in during run time to be able to test a few other functions that i wrote as well ... weird thing is by the way i wrote it it should only look 100 times... but by the unique ID in the database and the information it pulls back into my list box it loops 700 times before actually stopping the loop ...
Public Sub Fill_LeftOvers()
Dim x As Integer = 0
conn.Open()
[CODE]...
Now i used step debugging and sure enough it only loops 100 times during stepping but in the database it looped like crazy ... i have also tried while x < 100 instead of the do loop but it did the same thing ... i know this may be considered a double post i mistakenly posted originally in the PHP forums earlier today ...
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Feb 28, 2011
I am working on a database for a program. I used the .mdf file, created a table, and tried to store data in it.I did not build the program yet. I am still using it on a test drive or debug mode.I added three records to the database.I closed the program for 10 minutes and went back to writing code for it.When I opened up the program again, the database only showed that I had one record.This happened before and after I wrote other code for my program.I only started having the problem today?Is it possible that there is not enough room in the database to store all the records? The variable sizes for 3 of the fields are 400, 500,500, and 1000 and the other fields are like 50 each.All together there are 7 fields. I encountered the error after i had made one of the fields a look up field.In this field, basically I loaded categories stored in an extra files into the comboBox so users can select values without having to retype it.
Can you tell me what the error is and how I can fix it or what I am doing wrong in the program?How do I set up another table and query it to pull the values I want for the comboBox field?
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