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by: CroDude |
last post by:
Hi all!
I have problems when writting bitmap to a byte array and after reading it
back form byte to Bitmap object.
What I do is this: First I throw Bitmap to a memory-stream and then I write
it into byte from a stream.
Exception (System.ArgumentException: Invalid parameter used) occurs when
reading from byte over a memory-stream back to the Bitmap object.
Please help, I'm really stuck here!
Here's the code I use (Sorry for a long...
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by: Raed Sawalha |
last post by:
I have a Bitmap Object and I need to return it as array of bytes is it possible
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by: vbdotnetmania |
last post by:
I have the following snippet of code with bm being a succesfully stored bitmap
(not including all the code just the relevant bits)
Dim g As Graphics
Dim g2 As Graphics
Dim bm As Bitmap
Dim bm2 As Bitmap
Dim bitmapbytestream() As Byte
Dim b2() As Byte
Dim ms As New MemoryStream()
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by: Bruce D |
last post by:
I'm having a problem saving my bitmap in my MySQL database. Apparently it's
too big...but it shouldn't be. Here's what I got:
Dim bmpDocument As Bitmap = Bitmap.FromHbitmap(hDibCopy) ' get image from
scanner
Dim bmpResize As New Bitmap(bmpDocument, 680, 880)
mySQLManager.InsertDBImage(elmImageIndex, intNextDocument, bmpResize)
Public Function InsertDBImage(ByVal ImageElement As XmlElement, _
ByVal
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by: tjonsek |
last post by:
I get a generic error (not very helpful) when attempting to save a
re-sized image back to its original location. Here is the code snippet:
Dim g As System.Drawing.Image =
System.Drawing.Image.FromFile(Me.File1.Value)
Dim thisFormat = g.RawFormat
Dim imgOutput As New Bitmap(g, 800, 600)
Dim strFileType As String
Dim strFileName As String = File1.PostedFile.FileName
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by: gsmith |
last post by:
Hello,
I am developing a video recording (mjpeg) system which records large
binary files. I need to read the JPEG data from the binary file and
create a bitmap object to be displayed. Unfortunately I cannot find an
efficient way to do this in C#. I need to do this at 10fps+ with 1hour+
data files.
My current approach is read a byte from the filestream, then create a
MemoryStream to the created byte and then a bitmap from the memory
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by: Smokey Grindel |
last post by:
I have a bitmap object I want to return as a JPEG image with a compression
set at 90% and progressive passes enabled, how can I do this in .NET 2.0?
Progressive passes are not necessary but the compression ratio is.. thanks!
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by: eliss.carmine |
last post by:
I'm using TCP/IP to send a Bitmap object over Sockets. This is my first
time using C# at all so I don't know if this is the "right" way to do
it. I've already found out several times the way I was doing something
was really inefficient and could reduce 10 lines of code with 2, etc.
For reading, I am using a TcpClient and I call
NetworkStream ns = client.GetStream(); to get a stream
stream.Read(buffer, 0, buffer.Length);
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by: active |
last post by:
I've been looking on the Internet for a way to convert a DIB to a Bitmap
without success.
Now I'm wondering if that is the approach I should be taking.
All I want to do is display the DIB or draw it into a Bitmap.
Is there a graphics method that can help?
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by: Joe Duchtel |
last post by:
Hello -
I have the following code to get a bitmap from the clipboard and to
save it to a *.png file ...
Dim lData As IDataObject = Clipboard.GetDataObject()
If lData.GetDataPresent(DataFormats.Bitmap) Then
Dim lPictureBox As New PictureBox
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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...
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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,...
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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...
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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...
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by: isladogs |
last post by:
The next Access Europe User Group meeting will be on Wednesday 1 May 2024 starting at 18:00 UK time (6PM UTC+1) and finishing by 19:30 (7.30PM).
In this session, we are pleased to welcome a new presenter, Adolph Dupré who will be discussing some powerful techniques for using class modules.
He will explain when you may want to use classes instead of User Defined Types (UDT). For example, to manage the data in unbound forms.
Adolph will...
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by: TSSRALBI |
last post by:
Hello
I'm a network technician in training and I need your help.
I am currently learning how to create and manage the different types of VPNs and I have a question about LAN-to-LAN VPNs.
The last exercise I practiced was to create a LAN-to-LAN VPN between two Pfsense firewalls, by using IPSEC protocols.
I succeeded, with both firewalls in the same network. But I'm wondering if it's possible to do the same thing, with 2 Pfsense firewalls...
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by: adsilva |
last post by:
A Windows Forms form does not have the event Unload, like VB6. What one acts like?
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by: muto222 |
last post by:
How can i add a mobile payment intergratation into php mysql website.
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by: bsmnconsultancy |
last post by:
In today's digital era, a well-designed website is crucial for businesses looking to succeed. Whether you're a small business owner or a large corporation in Toronto, having a strong online presence can significantly impact your brand's success. BSMN Consultancy, a leader in Website Development in Toronto offers valuable insights into creating effective websites that not only look great but also perform exceptionally well. In this comprehensive...
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