Anyone here has an idea where I can get the ports name listed in my PC? [code]I could get COM26 and etc. if any, but that's not what I want. Instead of retrieving COM26, I want USB-SERIAL CH340 or USB-SERIAL CH340 (COM26). How could I do that?
View 3 RepliesI want to display a transparent image.where is the imagebox control?all i find in the toolbox is "imagelist"..do i need to downlad any thing from microsoft. BTW i am using Visual Basic 2010 express edition
View 3 RepliesAfter some digging around both here and the www in general I have plucked the following code to allow me to install a non listed printer driver to my XP machine. Problem is I am unable to get it to function properly.
The first section of the code creates the port every single time with out fail on any machine that I have tried but doesn't seem to function with the addition of the drivers.
I am trying to install HP driver that have been downloaded for HP site (extracted into C:emp1hp3035 ). I am also trying the same with a HP 4730 printer but neither work. I know i'm over looking something but what??
from most of the sites I need both the .ink and the .dll references but the HP .exe when extracted give a scatter of .cab files. I have tried to extract the EN one and use the dll from there still no joy (this it the .dll reference below.)[code]...
i have in my form a compobox which listed agents name, and when I choose one of them the datagridviw shows the products that agent provide to my company.
in first selection is going without any massage, but in second selection the compiler gives me this massage:Object Reference not set to an instance of an object
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I am attempting to open a cmd.exe process with the 8 arguments listed At this point all this does is open a command window in the correct directory
Microsoft Windows [Version 6.1.7600]
Copyright (c) 2009 Microsoft Corporation. All rights reserved.
F:Python26>
What I want to send to the command window is:
F:Python26> python.exe globalmaptiles_modified.py 17 32.123365 -95.938098 32.266846 -95.789143 F:Python26process_test.txt
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I have even tried this with a design Process from the toolbar and set the File, working directory and start info arguments and I get the exact same results. I am not understanding the Argments function or I am doing something wrong and not sending them correctly.
When I run my VB application (as far as I know any application) within Visual Studio I get a bunch of exceptions listed in the Immediate Window. They seem to refer to system files, not the files I generate. They also keep generating as the program processes data. Here is a sample.
Quote:
A first chance exception of type 'System.ArgumentOutOfRangeException' occurred in mscorlib.dll
A first chance exception of type 'System.ArgumentException' occurred in Microsoft.VisualBasic.dll
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Any thoughts as to what this is and whether it is a problem. The applications seem to run fine.
I managed to create an application that is listed in the 'open with' list only in debug version. Means, when I right click on a file extension and select "open with..." I get the 'choose program' dialog and can browse for my app, nothing impressive. The weird part is, that when I enter the path to the debug version of my program is works, and when doing the same to the release version my app is not even listed, it is simply not shown...
Does anybody know what it needs to make a simple VB.net app be listed here, any fancy debug/release setting?
how to copy files listed in a listbox to a new specified directory?my code isn't showing any errors but doesn't work..
Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click
Try
Dim path As String = "c:krishna folderwallpaper files"
Dim di As DirectoryInfo = Directory.CreateDirectory(path)
[code]....
i have programmed a program that send emails but it sent each time one email to one personnow i have a CheckedListBox1 filled with all my contacts emails
View 9 RepliesI am trying to view PNG files listed in an ACCESS file, the PNG files are on the same path as the application. Including the following syntax: /intro.png in the table is not working.
View 12 RepliesCan i select multiple items in a Checked list Box? I have been tryng for soemtime now but I just dont seem to get the multipe selectd items even when I put it in a loop! Listbox has the member of being Selected. A checklistBox doesn't why? I need to select mulitple items in a CheckedListBox and save it in a database.
View 2 RepliesI've tried the following code but it doesn't delete and no error message received.
Private Sub btnDelete_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnDelete.Click
Dim Station As String = ""
For Each sItem As ListViewItem In lvList.SelectedItems
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I am working on a Windows Service application in VB.net 2008. The main objective of the application is to monitor starting and stopping of applications listed in a file. I build the service as system level by using
mManagementStartWatcher = New ManagementEventWatcher("Select * From Win32_ProcessStartTrace")
AddHandler mManagementStartWatcher.EventArrived, AddressOf
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I have defined a class with multiple constructors so that the underlying interfaces are immutable once the object is instantiated. I would like one of the constructors to be the "default" constructor for when a user types the following in Visual Studio:
var obj = new MyClass( Dim obj As New MyClass(
Currently when I go to instantiate the object, the constructors aren't listed (in Visual Studio IntelliSense) in the order I declared them in my class. Is there a way to mark up my constructors so that their methods appear in a particular order during instantiation in Visual Studio IntelliSense?
I have a UserControl with a property called "Type". This can have any combination of three values, say
View 1 RepliesIn .NET development and don't really know what to use to do some specific actions. I'm also a newbie in AJAX/JavaScript development. I'm using the mvc3.
I'll have to implement a few things :
-rating systems with 5 stars
-classification of items that are listed inside a table. (e.g. : I want all the people that are older than 20)
-searching inside the whole database (e.g. : I want everything that contains the word "tennis", so, it should give me a table with all the people tha play tennis, than a table with the clubs were people play tennis,...).
-a kind of intellisense (e.g. I add a new person inside the database, and for the field "club", I just want to write the first lettes of the club, and then, I would just have to click on the club to fullfil the field).
I've found plenty of websites that give me a library with some of the things that I need. But, I don't know which one I should choose.
I do need something that is as simple as possible, with examples for razor (I'm using VB.net, but it doesn't matter if it's in c#). If possible, having nothing to install could be great (I know that the Jquery scripts that are installed by default are already great).
in terms of code how would i go about getting a single word listed in a listbox to a appear in a rich text box on a single button click?
View 23 RepliesI just started using VS 2010. This product is supposed to be so much better than VS 2008 yet I'm noticing a couple of glaring things that are failures if you ask me.
1. When designing a Gridview, after having clicked on Edit Columns, in VS 2008 I could select the first field listed on the left side of the window, set a property--say headStyle-- and set the Horizontal Align to Left. Then if I clicked on the next field, that same property would still be selected on the right side of the window. In VS 2010, I have to go through finding the property and then expanding it and selecting it for each individual field. While it seems like a small thing, it's time consuming and kind of a pain. Is there some reason they couldn't have made it behave the same as in VS 2008?
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Our company is developing software projects that use a users windows username/password for program authentication. Our programs encrypt the username /password, send them to a web service. The web service decrypts the username/password and authenticates the user against our LDAP using the System.DirectoryServices namespace. This works well. There are two methods, one that validates the user and passes back the user's LDAP info in a datatable, the other passes back a boolean that indicates the user is on the domain. This is working just fine. Over the 4th of July weekend, our domain server hung. While it slowed down the login process for windows while it re-routed to a secondary domain server across the country, all our programs could not validate the users because our local domain controller was down.So I have been asked to update the web services to include a list of domain controllers that can be used if the local one is not available. Below is a snippet of code I use to validate a user:
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The getinfo function uses the directory services to create an LDAP entry, then do a search based on the account name (windows username) and populates properties for common LDAP information. How can I extend this function, or re-write it, to run down a list of domain controllers found on the network to validate a username? I was thinking of putting the domain in a database, but that requires administration as they change. Is there a way to cycle through the local domain controllers listed on the machine?
I'm working on a project and would like to know how i can add the list of avabilable serial ports to the combobox[code]...
View 5 RepliesI will explain first what kind of program we are talking about: The program that I made works togehter with my PIC Microcontroller to control 2 stepper motors. One for the rotating motion and the second for a tilting motion. With this system I want to make a airplaine pointing and tracking system.
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What is the best way of communicating with Serial ports and TCP/IP communcation using vb.net?Using visual studio .net can we make it easier?? Can anyone send me sample application of communications?If I write a program communicating with my hardware using Searial port or TCP/IP, will the program be slow?? Are there any programming techniques working with communication ports?
View 1 RepliesWe need to put a firewall in between our servers and a couple of clients. To do this we need to limit the number DCOM ports available so that we know what ports to open on the firewall.The question I have is do we need to limit the number of ports on all the machines inside the firewall as well as outside. This would cause an issue as we have lots of machines which would need to be modified.If DCOM has the intelligence to negotiate on port 135 which port is available on both machines which need to communicate, we will only need to modify the 2 machines on the outside of the firewall.
View 2 RepliesI am creating a USB "cookie dispenser" (long story) and I plan on programming it by, when cookie.exe starts, it disables the port, you plug the USB in and press a button and it enables the port (thus powering the device). What I need to know is, is this at all possible? And if so, can you help me get it to work? I know I should put in an effort but it's late for me (UK) and I want to post this overnight so that you guys (in the USA may
View 8 Replieshow do i detect for open ports? if the server close the port, the client will have to respond with msg("PORT IS OPEN")
View 5 RepliesI am trying load a text file that contains ips and ports in the format of Ip:Port
this is the code i have so far...its gives me an error of.... Is operator does not accept operands of type 'Boolean'. Operands must be reference or nullable types.
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i want to open and close com ports in vb.net and send data through ports.
View 2 RepliesI Need to be able to read an unknown number of serial ports (I plan to limit the number to 10). I'd like to use a datareceived handeler for all of them. This is what I came up with, that seems to work with my test ports. However I'm wondering if thiscould cause any problems if more data is received than I'm currently testing with. It is possible that one or two ports will be transmitting 16 records per second each. Here is the code I'm testing with:
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I want to experiment with COM ports but I'm stuck trying to figure out the COM port on my laptop. When I run the following program:
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PCI expansion card with my wireless internet card in there the hp manuals also say that my laptop should have a PS/2 mouse or keyboard slot but i dont see it anywhere. what ports could "COM3" be refering to?
I want to get the details of a com port on my machine. To be more precise the com port presents itself in the device manager as:
MyPort(COM3)
I know how to get the name of the port i.e. COM3. Is there a way to get the rest of its description i.e. "MyPort".