Hi
Anybody got an impression whether .NET 2.0 supports USB ports?
I know that the Serial (COM) and parallel ports (LPT1) are included, but how is the story on USB ports?
/Claus
2  2130 
Claus,
There is no support for USB devices out of the box. You will have to use COM interop or P/Invoke to make calls to unmanaged APIs in order to access this functionality.
Hope this helps.
--
- Nicholas Paldino [.NET/C# MVP]
- ca*******@caspe rshouse.com
"Claus Konrad" <so*@meal.it> wrote in message news:%2******** ********@TK2MSF TNGP14.phx.gbl. ..
Hi
Anybody got an impression whether .NET 2.0 supports USB ports?
I know that the Serial (COM) and parallel ports (LPT1) are included, but how is the story on USB ports?
/Claus
What exactly do you mean with "support"? All device access in Windows goes through device driver interfaces, while the device drivers can only be implemented in C , all user code should be able to access the device, irrespective the implementation language. The way this is done depends on the device type itself, f.i to access a generic USB Disk device one can use the IO namespace classes. However if the device is a non generic device, one should access the device through it driver interface using CreateFile and DeviceControl Win32 calls. If the device manufacturer has added support for higher level language interfaces like COM (or .NET) you can use COM interop to access the device.
Wlily.
"Claus Konrad" <so*@meal.it> wrote in message news:%2******** ********@TK2MSF TNGP14.phx.gbl. ..
Hi
Anybody got an impression whether .NET 2.0 supports USB ports?
I know that the Serial (COM) and parallel ports (LPT1) are included, but how is the story on USB ports?
/Claus
This thread has been closed and replies have been disabled. Please start a new discussion. Similar topics | |
by: Jukka K. Korpela |
last post by:
The HTML specifications define the entities ‍, ‌, ‎, ‏
as denoting zero-width joiner, zero-width non-joiner, left to right
mark, and right to left mark.
Is there any evidence of any browser support to the characters so
denoted, in the sense defined in the Unicode standard, chapter 15?
( ‍, ‌, ‎, ‏ )
For example, does f‍i ever produce an fi ligature? In my tests, the
best I get is that the characters...
|
by: Oodini |
last post by:
Hello,
Could anyone explain me the following preprocessor sentences:
----------------------------------------------------------------
#if (defined(__STDC__) && !defined(NO_PROTOTYPE)) || defined(__cplusplus)
# define _USING_PROTOTYPES_ 1
# define _ANSI_ARGS_(x) x
# define CONST const
|
by: Paminu |
last post by:
In math this expression:
(a < b) && (b < c)
would be described as:
a < b < c
But why is it that in C these two expressions evaluate to something
different for the same values of a, b and c?
|
by: dtsearch |
last post by:
A new beta build offers 64-bit developer access to dtSearch's
"terabyte indexer," and
preliminary MS Word 2007 and Excel 2007 support (in both 64-bit and
32-bit versions)
BETHESDA, MD (July 22, 2006) dtSearch Corp., a leading supplier of
enterprise and developer text retrieval software, announces a native
64-bit beta version of the dtSearch Text Retrieval Engine for Win &
..NET. The dtSearch Engine lets developers add dtSearch's...
|
by: InvalidLastName |
last post by:
We have been used XslTransform. .NET 1.1, for transform XML document, Dataset with xsl to HTML. Some of these html contents contain javascript and links. For example:
// javascript
if (a > b)
.....
// xsl contents
abc.aspx?p1=v1&p2=<xsl:value-of select="$v2" />
| | |
by: Mercdev |
last post by:
I have an ActiveX control inherited from UserControl. This control is
hosted in IE(version 6 or later). How i can navigate IE from this control.
I know that i need to obtain IWebBrowser2 interface and work with it,
but i can't. Can someone show an example how to get IWebBroswer2 or way how
is possible navigate IE?
|
by: semedao |
last post by:
Hi all,
I'm looking for some example , open source etc code that implement caching
of files and folders with those requirments:
1. like every file system , I can write , read , delete etc files and
folders , and put files into folders , sub folders etc.
2. every object in the cache can be accessed via: name , but also based on
some unique ID , for example , the hash of the file data.
3. deleting folder will delete all it's sub folders &...
|
by: gg |
last post by:
I specify the Url element as
<xsd:element name="Url">
<xsd:simpleType>
<xsd:restriction base="xsd:string">
<xsd:maxLength value="512"/>
<xsd:pattern value="http://+"/>
</xsd:restriction>
</xsd:simpleType>
</xsd:element>
in the xsd but When I use the following in the xml
|
by: =?Utf-8?B?SGVyYg==?= |
last post by:
Can someone point me in the direction of documentation for Office Interop?
Specifically, Microsoft.Office.Interop.MSProject. Mainly what I need is a
command set, programming documentation.
I need to be able to open and edit Project 2003 files which are Published to
a Project Server.
I know a limited set of methods, but documentation would help immensely.
|
by: SAL |
last post by:
Hello,
I'm trying to include a popup in the ItemTemplate of a gridview row. The
ItemTemplate for the field contains a textbox and when the user clicks in
the textbox I want a popup panel to show allowing the user to make a
selection from the popup window. I have enabled AJAX extensions and have a
working sample outside of a gridview. However, when I click in the textbox
of a gridview row, all I see is a really small square instead of the...
|
by: marktang |
last post by:
ONU (Optical Network Unit) is one of the key components for providing high-speed Internet services. Its primary function is to act as an endpoint device located at the user's premises. However, people are often confused as to whether an ONU can Work As a Router. In this blog post, we’ll explore What is ONU, What Is Router, ONU & Router’s main usage, and What is the difference between ONU and Router. Let’s take a closer look !
Part I. Meaning of...
| | |
by: Hystou |
last post by:
Most computers default to English, but sometimes we require a different language, especially when relocating. Forgot to request a specific language before your computer shipped? No problem! You can effortlessly switch the default language on Windows 10 without reinstalling. I'll walk you through it.
First, let's disable language synchronization. With a Microsoft account, language settings sync across devices. To prevent any complications,...
|
by: Oralloy |
last post by:
Hello folks,
I am unable to find appropriate documentation on the type promotion of bit-fields when using the generalised comparison operator "<=>".
The problem is that using the GNU compilers, it seems that the internal comparison operator "<=>" tries to promote arguments from unsigned to signed.
This is as boiled down as I can make it.
Here is my compilation command:
g++-12 -std=c++20 -Wnarrowing bit_field.cpp
Here is the code in...
|
by: jinu1996 |
last post by:
In today's digital age, having a compelling online presence is paramount for businesses aiming to thrive in a competitive landscape. At the heart of this digital strategy lies an intricately woven tapestry of website design and digital marketing. It's not merely about having a website; it's about crafting an immersive digital experience that captivates audiences and drives business growth.
The Art of Business Website Design
Your website is...
|
by: Hystou |
last post by:
Overview:
Windows 11 and 10 have less user interface control over operating system update behaviour than previous versions of Windows. In Windows 11 and 10, there is no way to turn off the Windows Update option using the Control Panel or Settings app; it automatically checks for updates and installs any it finds, whether you like it or not. For most users, this new feature is actually very convenient. If you want to control the update process,...
|
by: tracyyun |
last post by:
Dear forum friends,
With the development of smart home technology, a variety of wireless communication protocols have appeared on the market, such as Zigbee, Z-Wave, Wi-Fi, Bluetooth, etc. Each protocol has its own unique characteristics and advantages, but as a user who is planning to build a smart home system, I am a bit confused by the choice of these technologies. I'm particularly interested in Zigbee because I've heard it does some...
|
by: agi2029 |
last post by:
Let's talk about the concept of autonomous AI software engineers and no-code agents. These AIs are designed to manage the entire lifecycle of a software development project—planning, coding, testing, and deployment—without human intervention. Imagine an AI that can take a project description, break it down, write the code, debug it, and then launch it, all on its own....
Now, this would greatly impact the work of software developers. The idea...
| | |
by: adsilva |
last post by:
A Windows Forms form does not have the event Unload, like VB6. What one acts like?
|
by: 6302768590 |
last post by:
Hai team
i want code for transfer the data from one system to another through IP address by using C# our system has to for every 5mins then we have to update the data what the data is updated we have to send another system
| |
