Load Image From IO.Memorystream?
Apr 17, 2009
Ive a picture box on a webform. I want to load a picture into from a memorystream. The code im using :
If Me.ComboBox1.SelectedValue.ToString.Trim <> "System.Data.DataRowView" Then
Dim bmpTmp As Drawing.Bitmap = Drawing.Bitmap.FromFile(Me.ComboBox1.SelectedValue.ToString.Trim)
[Code]....
What I'm trying to do is convert a tiff image to a gif and display it in a picturebox on a webform. The source file is deffinatly be found as the commented out line which saves the file to the c: drive works perfectly. However I cant seem to get the picturebox to load with the memory stream.
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Feb 21, 2012
ok i have image that i bind info in it and i want to read the info now from file (FileStream) its workbut i want to do it not from file so i need to use MemoryStreamhere the example that work and how i do it now how i make it work with MemoryStream (with byte = My.Resources or PictureBox1.image)
Using FS As New IO.FileStream(image, IO.FileMode.Open)
FS.Seek(0, IO.SeekOrigin.End)
While Not FS.ReadByte = Asc("|")
[code].....
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Apr 16, 2010
I have some trouble with loading a richtextbox from a memorystream.I have some data in a database table stored as a byte array, I convert it to a string and load it into a memorystream and then I want to load that memory stream in the richtextbox. The application breaks on
Dim tr As New TextRange(rtbTemplate.Document.ContentStart, rtbTemplate.Document.ContentEnd)
though.
[code].....
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Dec 5, 2010
I wrote a piece of code that grabs a fileupload, puts it into a memory stream, converts the main pic, and thumbnail pic, then saves them as jpegs, then updates the database.
Everything works fine, except one little glitch. If the DPI is above 300 then the image doesn't save right. It get's pixelated and blury.
here is the code.
Dim fileLen As Integer
# Dim myStream As System.IO.Stream
# Dim ImgContentType As String
[Code].....
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Oct 24, 2011
I use WPF and my program has images in a DLL resource file. I have this well working way to read in images from disk:
Private Function GetImageFromFile(ByVal fileName As String) As BitmapImage
Dim buffer As Byte() = IO.File.ReadAllBytes(fileName)
Dim memoryStream As New IO.MemoryStream(buffer)
[Code]....
Now, how can I get images in this MemoryStream-way from a DLL resource?
The basic problem: If I use simply the "bitmap.UriSource = whatever uri" way and load many images in sequence like an animation it builds up the memory. I tried with the above memorystream way and it worked perfectly fine, but then I store my images in a dll and I don't know how to do this trick. If anybody knows how to read many images from a managed dll without building up the memory
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Mar 11, 2010
The Clipboard class has very handy methods to check contents, like 'ContainsImage' and 'ContainsText'.How do I check if a MemoryStream contains an image or a text?
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Mar 31, 2011
I have this program that extracts ole objects from my access database and tries to save them as jpeg images. I keep getting an error on this line:
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May 21, 2009
This is interesting. We've spent the last day attempting to patch a problem with the following (legacy) code that continues to grow its process size. This is done in Visual Studio 2003.We have a form on which we display an image (from MemoryStream) and some text and a button. Nothing fancy. Looks something like this: Protected Overrides Sub OnLoad(ByVal e As System.EventArgs)
[Code]...
Now. We've tried very numerous things. We've discovered that Disposing does nothing, and, indeed, the IDisposable interface doesn't actually touch memory. If we don't create a new CJ5Form_PTOperatorAcknowledgement form each time, the process size does NOT grow. But loading a new image into that form still causes the process size to continually grow.
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Jun 22, 2010
I'm getting GDI+ error when saving picturebox image to the database. My database is sql server with image datatype. Ideally when I browse image file to the picturebox then save using following code
[Code]...
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Jun 28, 2011
i have an image in an bytearray. I convert thiy bytearray to an image an do a resize on it which works fine. But after that i want to convert it back to a bytearray and then i get a "Value Cannot be null Parameter name: encoder" Exception when trying to do a IMG.SAVE(MEMORYSTREAM, IMAGE.RAWFORMAT)
[Code]....
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Jun 16, 2011
I need a code that will load text, the correct image to match it and the command for each image. what i want to do is make a program that will download a swf and an image into to folders. then at startup the program will load all the swf and images and put the images into a listview so when you click on the image for the swf file it will give the link to the swf so it can be loaded.
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Dec 22, 2009
I am "weeks new" to visual basic 2008 but I was hoping that someone might tell me how I can open an image in whatever type of "visible" graphics window (always positioned at: x=0 y=0); move to some "definable position" of interest x=(n) y=(n); change the brightness of that "individual pixel" by some "definable means of measure" from its original state; and save the new image as a separate image file?
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Dec 20, 2009
i want to know, which way program runs faster1- add image to button through its property -> assign image from project resource file2- on form load event, assign images to buttons, from project resource file
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Apr 25, 2011
I have Problem to clear the image vb.net.i have one picture box and 4 button but the problem is that if picture is save in the path folder.and load in the form load the clear button is work fine and clear the image but after that
when i browse the image and press OK picture box load the image then i press clear button
the image is not clear its automatically Stretch the Image.plz help me how can i clear thew image
[Code]...
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Jan 30, 2012
How do you down load a png file from a given URL? I need to download it, save it, and print to a printer using Visual Basic .net 2010.
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Feb 18, 2012
i'm doing a vb.Net project, it has a function to upload and save picture into the database and view back the image in a picturebox control.i have successfully did the codes for upload and save the image into database.Now i have trouble in getting back the image. It works fine when the picture is uploaded and viewed at the same time.if open the project and view the image, there's an error in line 16 says "Parameter is not valid".[code]
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Oct 30, 2009
I have written an application to match images in a row of picture boxes. When I click on the picture box the arrImages(nums(0)) should be displayed.[code]...
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Mar 30, 2009
Like The Avatar On Here (MSDN).
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Apr 20, 2006
How to load image into picturebox from web?
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Dec 5, 2010
I want to load a picture using a browse button.
Option Strict On
Imports System.IO
Public Class Form1
[Code]....
The browse button appears, allowing me to search for a file, but when i select the file and click open, nothing happens.
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Feb 23, 2010
I code to load an image below. It works fine.[code]...
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Jun 12, 2009
How can i load a picture in an Image Boc and how can io generate a Random number with tow levels.
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Feb 6, 2010
I have Picture in the same folder that stored my vb project. the folder name is Pics. and on the form I have ImageBox and CommandButton. What i want is when I click the Button I need to get the image inside imagbox.
example: image1 = PicsMyimage.jpb
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Nov 26, 2009
I am using VB.net and have a form that contains a picturebox and i have to load an image into it from another class. When i set image property of picturebox from other class it doesn't display the image. I think its something to do with display form intitialization but not sure. It works well if i put a button on the same form to display image but thats not what i want. I want to set the image from another class's function.I have a form with public class VBSample and this form contains a button "Take Picture" with an associated event controller.actionPerformed( "takepicture")Where controller is a controller for my attached camera. From here it goes to a controller handler of Public Class CameraController which actually takes the picture from camera. After taking the picture program control is transeferd to Public Class DownloadCommand which download the image from camera into a filestream and then stores it on hard disk...after copying the image into memory i want to display it in a picture box on my initial form which is Public Class VBSample but it says that picturebox cannot be referenced ....
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Dec 31, 2005
How would i do that? or convert the .dds to a like .jpg?
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Mar 18, 2010
How would i load and image from network stream as bmp?For example the client sends a image thats jpg. but the server displays the image on a picture box property as bmp.
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Dec 25, 2009
I want to load image from the web[code]...
but the problem is i note that when the program is minimized, the image will not be loaded until i maximize the program
so, how can the program load the image even if the program is minimized?
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Mar 18, 2010
how do I load an image by its IDthe id is let_image and i want to try to load the image by itself on the application
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Jun 24, 2011
I have a problem with a memory stream.
I extract from an archive a Jpeg that's about 256 Kb, load it into a memorystream and display it into a picturebox
when doing that, my app ram ussage grows with 50+ MB
Here's the code
zip.Encryption = EncryptionAlgorithm.WinZipAes128
zip.Password = MainFrm._Pass
Dim str As New MemoryStream
[Code]....
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Nov 15, 2010
How to load a 16 bit tiff image in visual studio?
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