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.
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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)
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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.
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("|")
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Is it possible to retrive a class with formating in a control like richtextbox
View 3 Repliesit seems so simple but i cannot find the answer. I have a menu strip item (open...). and I have a RichTextBox1. I need to open *.txt and have it displayed in RichTextBox1. Currently I have no code behind 'open...'
View 1 RepliesI'm trying to load a RichTextBox using an RTF file that is embedded as a resource:
Private Sub Button1_Click( _
ByVal sender As System.Object, _
ByVal e As System.EventArgs) Handles Button1.Click
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I have in my form 2 RichTextBox , one Listbox , one OpenFileDialog and one Button . In those 2 RichTextBox I would like to load two (*.RTF) FILES .
Application Steps :
1- When I click the button , an OpenFileDialog open .
2- I choose those two files (*.RTF) and when I press the OK in OpenFileDialog, the path of those two files are written in the ListBox as Items.
3- After getting the path of those two files , I would like to load them into those two richtextboxs .
The problem is that I don't want to specify the richtextboxs names in order to load the files . What am I saying ? I.E : I don't want to use that code : "RichTextBox1.Loadfile(Listbox1.items.item)" When I debug my application : everything goes well , only when the listbox items are loaded in the richtextboxs control I get only one file loaded on those two richtextboxs. Right Now I have written these codes :
Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click
OpenFileDialog1.Filter = "RTF Files (*.rtf) |*.rtf"
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How can i load the contents of word file in richtextbox, as they are in word file, with all line breaks and formatting?
View 2 RepliesI have been investigating xml and find it quite fascinating. Not sure it is worth the effort as far as the sppeed of loading scriptures into a richtextbox.Scenario: User double-clicks in TreeViewLibrary and opens the nodes. He double-clicks on Genesis Chapter 1. Genesis Chapter 1 Verse 1 loads into the RichTextBox.[code]
View 1 RepliesIn my rich text box control I need to load the msword document file. My word document file contain but it is accepting only a text file.
View 13 RepliesI am not a total newbie to Visual Basic. However, the last time I used it was back in the days of DOS and Windows 3.11. Now I am using VS10 on a Windows Vista machine and it so different, I feel like a total newbie.
I am working on a project that I wish to load RTF files into a RichTextBox and an accompanying image into a PictureBox at runtime. I want this to happen when the user clicks a Menu Choice.[code]....
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
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# TAG NAME = is saved to a file using the code below but when I load that same file back into a RichTextbox Control using additional code below, I get inconsistent results as I try to parse the text. Has anyone else had this problem?'Save the contents of the RichTextBox into the file.richTextBox.SaveFile(saveFile1.FileName, RichTextBoxStreamType.RichText);'Retrieve contents of File into RichTextBox control Dim logData As String
logData = System.IO.File.ReadAllText(path + "\" + filenname);
I am having an issue using BinaryFormatter.Serialize. I have this generic extension method to "clone" an object via binary serialization:
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This is killing performance. Anything more that about 7 or 8 clones brings the app to a halt. Why would this happen? The USING block ought to ensure the MemoryString is disposed of, right? Shouldn't a new MemoryString be created each time? I would think since the same original Mode object is the source for the serialization, the MemoryString length would be the same.
I'm working on a project to extract documents from a SQL Database and writing those documents to a network drive. However some of the files pointed at in the DB are encrypted files (RijndaelManaged)that reside on another network driveI have been able to retrieve, and decrypt the files using streams. Now aving problems saving or converting the Memorystream into an actual file.
Here is my code
Public
Sub ExtractDocument(ByVal ThisDocumentInfo
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I'm working on a project in VB.Net (2010) where I'm extracting files from an Document Management System.The Files reside on the network, and information about the files are in a SQL 2005 Database and have been encrypted with the Encryption Stream (System. Security. Cryptography. Rijndael Managed)i have retrieved the file, and decrypted them, but I'm trying to find out how to write the stream back to a file.I know the file type (which is stored in a SQL DB)I can't find a solution in any of the VB files or the MS site.
View 2 RepliesI am dynamically creating an pdf from a memorystream to a web browser, using itextsharp. It is called via https and it works in IE and Firefox but not Safari or Opera. I don't care about Opera but I do want it to work in Safari though. If I make the call with http it does work (creates the pdf) in Safari but not https
The error I get is The error is: unknown error (CFURLErrorDomain:303).
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
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I want to validate xml against XSD (VB.NET). My function look like this:
Private Function ValidateXML(ByVal xml As MemoryStream, ByVal xsd As String) As ArrayList End Function
How can I do the validation when my xml is a memorystream/stream (I use stream because I don't need to store the xml) and my xsd is a string (I get my xsd from a web servise as a string, and I do not need to store it in a file)?
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)
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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
I have this code to attach an image that is saved in my sql database as an attachments (or can be embedded picture) to an email. It is suppose to be a signature for an Outlook email. So I am attaching it to the email. Here is my code. On the line myNewMail.Attachments.Add I get the error "Value does not fall within the expected range."
Globals.EmailSignatureImage.Imagecontent is Byte() I know it has the correct data in it, because I show it in a picturebox correctly.
Dim
contenttype As New Net.Mime.ContentType
Dim memStream As System.IO.MemoryStream
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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?
View 5 RepliesI trying to display image in picture box. The application have two part.First part is windows application, and second part is web service (asmx).This is the code for windows application:
Public Sub PrikazSlike()
Dim p As localhost.Service1 = New localhost.Service1()
PictureBox1.Image = Image.FromStream(p.PictureShow())
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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:
View 6 RepliesI'm trying to play music from a memorystream in a WMP control.I can succesfully stream music with MediaPlayer, but this is limited to .wav and can't pause and so.
Dim mPlayer As New MediaPlayer(entryBytes.ToArray())
'begin playing the file
mPlayer.Play()
Is it possible to load a array of bytes or a memorystream into the WMP control?
As the title says can I create a memorystream then use it in a FIFO manner like a Queue.When you use memorystream.write it writes data at the memorystream.postion.If I then want to read the beginning of the memory stream I have to set position to the beginning and do a memorystream.read.
View 4 RepliesIs there something that needs to be done with the following code to release the memory it uses?
Dim objImage As MemoryStream
Dim objwebClient As WebClient
Dim sURL As String = Trim(m_StationInterface.PicLocation)
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The code is on a popup form that shouldn't ever get disposed. A new image is loaded onto the form every time it pops up. However, the process size for the application continues to grow each time it makes it through that code block.
I've tried objImage.Close() and .Flush(), objWebClient.Dispose(). The process size still grows by a good 4mb after every call. It's like the old image is kept in memory.
We are developing an Android Application (Java) that reads an image, encode the bytes in base64 to send them over HTTP (via GET) to a WebService written in VB.NET.On .NET side, they are using this :
Dim Pix As Image
Pix = Image.FromFile("C:UsersPublicPicturesSample PicturesTree.jpg")
Dim ms As New MemoryStream[code]....
How can I pass the correct string to them to correctly decode the image from Java encoding (unsigned) to .NET decoding (signed)?
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)
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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.
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
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