I have an embedded DLL in my app and I need to write it to the filesystem at runtime. I have this so far:
Dim _assembly As Assembly = Assembly.GetExecutingAssembly()
Dim _rawstream As Stream = _assembly.GetManifestResourceStream("MyFile.dll")
I just need to write _rawstream to a file now.
EDIT: This has to be .NET Framework 2 and CopyTo does not exist
Just starting up on VB 2008 Express (.NET). Trying to write to and read from a file. It runs without errors, but the messagebox only shows the 'OK' button, not the contents of the file as I want. I thought that maybe I have to rewind the file before reading, but AFAICS there is no 'StreamRead.Rewind' or Reset or something.
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I am trying to test a rest webservice but when I do a post and try to retreive the save the response stream to a file I get an exception saying "Stream was not readable." What am I doing wrong?
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I have a small problem with this code. I am adding information to my listview from multiple textboxes. As I add the info I automatically update a text file with the code shown below. The problem I have is When I add my first row the code will not write the data back to the text file, however if I add a second row the code is quite happy to write both rows of data back to the text file. I cannot for the life of me see what is wrong.
'Write tool info to text file
Dim outputstream As StreamWriter = File.CreateText("C:\MFSProFiles\" & CObj(PartNoTextBox.Text) & ".tme")
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This app is trying to send messages to a client listening on the port. The client's logs show that their port is being opened and closed, but no data coming in. Is there a bug or something missing in the following code, like perhaps stream.flush or stream.endwrite or a thread.sleep(0) line, that could cause this? The puzzling thing is, WireShark on the client computer does show the message my app is sending coming into the listening port.
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After opening a TCP stream and writing to it via Stream.write, how can a reply be received (on the same port) and processed?
View 4 Repliesi'm using the following code in order to send the bytes of a picture into the stream table:
Dim FirstColumnNames As String = imTable(0) & "_Code, " & imTable(0) & "_Price, " & imTable(0) & "_Title, " & imTable(0) & "_Type, " & imTable(0) & "_Height, " & imTable(0) & "_Width, " & imTable(0) & "_Comments "
Dim FirstFieldsValues As String = "'" & imParam(1) & "', '" & imParam(2) & "', '" & imParam(0) & "', '" & imType.ToString & "', '" & imHeight & "', '" & imWidth & "', '" & imParam(3) & "' "
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The tables have the fllowing stracture Thats the First Table:
myCommand = New SqlCommand("CREATE TABLE " & TablesStat(0, 0) & _
" (" & TablesStat(0, 0) & "_ID int NOT NULL PRIMARY KEY IDENTITY(1,1), " & TablesStat(0, 0) & "_Code varchar(20) NULL, " & TablesStat(0, 0) & "_Price money NULL, " & TablesStat(0, 0) & "_Title varchar(50) NULL, " & TablesStat(0, 0)
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End the second table is:
myCommand = New SqlCommand("CREATE TABLE " & TablesStat(1, 0) & _
" (" & TablesStat(1, 0) & "_ID int NOT NULL PRIMARY KEY IDENTITY(1,1), " & TablesStat(1, 0) & "_GUID UNIQUEIDENTIFIER ROWGUIDCOL NOT NULL UNIQUE , " & TablesStat(1, 0) & "_" & TablesStat(0, 0) & "_ID int FOREIGN KEY REFERENCES " & TablesStat(0, 0) & " (" &
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My problem comes when i'm trying to read the 'filePathName' and the 'fileToken'the privious SELECT GET_FILESTREAM.... return me only one colomn to read the colomn 0 which has the GUID in binary format I know i'm doing something wrong but i don't know what My issue is that i'm not geting th 'filePathName' and the fileToken'?
Lets say I wanna write a string "Hello World" into a MemoryStream and read this string to MessageBox.Show() without using Helper objects such as BinaryWriter and BinaryReader and StreamWriter and StreamReader etc.
how to accomplish this with low-level functions of MemoryStream stream object.
P.s: I both use C# and VB.NET so,
i have made tcp connection to this webpage using tcpclienti can send commands like GET /Pagename.aspx to get the htmlnow is it possible that from webpage.aspx i can get the connected client stream and write to it and tcpclient gets that data ?
View 1 RepliesI have this code that was working in a proof of concept app I had - but now will not work.
For Each ddfile As String In ddfiles Dim MyThread As Thread ' simple new thread Dim newFS As FSObject = New FSObject() 'new FSObject which is a file object I made up' used because i needed to keep the name and index matched so the callback function had something to work with
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in an winForm app in VS2010 win 7 compiling to x86, I try to do what Alvas.Audio seems to work. See (c# ex: [URL] for reference.
Dim data() As Byte = wr.ReadData(second * i, second)
The result give me data.length()=0. I do not have any exception, I can read format from it and whatever reader I use I got this problem.EDIT : After some tests, it seems like the uncompressed file I create in the first step (in PCM format, with .wav extension) can not be recognized by the Alvas.audio library for the second step. I must miss something around Audio file markups or something alike.
Here is the code that might be the source (basically this is step 1):
Dim functOut As String = String.Empty
Dim wr As Alvas.Audio.IAudioReader = Nothing
Dim fs As IO.FileStream = Nothing
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How can I write the resulted stream to be sure I can read it again later?
I don't know whether it is simple or not because i am new to programming. my requirement is : In my vb.net winform application, the filenames of the files present in "D:Project" willbe displayed in DataGridView1 control. Now I want to load these files one after another into memory stream buffer and add the headers("ID","Name","Class") to the content in the file. Then I want to save these files in "C:" with "_de" as suufix to the filename i.e.,sample_de.csv.
View 1 RepliesI am writing a backup program that zips files. Using some sample code I have the following that creates a zip file. Problem is it does not get any subdirectories or files. Where am i going wrong?
Dim azFileNames() As String = Directory.GetFiles(SourceFolder)
Dim objCrc32 As New Crc32()
Dim zipStream As ZipOutputStream
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Alternativley, there is another component to the zipping dll that I could probably bypass the above altogether. It is: FZ.CreateZip(DestFile, SourceFolder, True, "", "") Where DestFile is (Output stream as system.io.stream). I'm trying to read all the files, directories, sub dir and files, etc from a specific location, let's say 'My Documents' into Destfile in which the FZ.CreateZip zips the file. FZ is FastZip which is from icsharpcode.net. They have c# examples, but that's greek to me. I'm trying to just learn VB!
If i use a stream to modify few bytes in a file without changing the total number of bytes
does the stream rewrite all the file even if just few bytes have been replaced?
Is there anyway to take a static stream reader, and switch it to another text file based on the user changing the file?
View 1 Repliesi would like to ask is there anyway to read a txt file with UTF-8 encoding using streamreader or filestream. the txt file is contain some extended ASCII that makes me cannot read the characters properly. I hav tried Encoding.ASCII.GetString(Encoding.UTF8.GetBytes()) but still it return wrong character when it's reading extended ASCII code.
View 2 RepliesIm making a desktop player for a online web radio, and for the program I wanna make it show all the stream info. Like the stream name, and such. However I dont know how to do this? I looked everywhere
The server url is setup like this "[URL]" And it has all the stream info and that there. So is there a way I can get the info from there onto like say a label? Live updates btw.
i am making a game in which the file stream gets a certain file(lets say a.txt) and it reads it, if it has certain values stored in the file it returns boolean(this is a function), then a sub procedure writes to the file using a streamwriter and a filestream using the same file. I am having problems, sometimes visual basic says that another process is using the file, this is before i closed the filestreams and the streamwriter or streamreader, then it gives me errors when i close the files, it tells me that it can't access a file that is already closed, i thought the filestream gets the file and lets the streamreader or streamwriter read or write to the filefound out the problem?
View 2 Repliesis it possible to report the percentage of file written by a file stream wile it is writing a large file?I am using a code like this one to write a large file
Using Fs As System.IO.FileStream = System.IO.File.Create(FolderPath)
Dim bf As New BinaryFormatter()
bf.Serialize(Fs, data)
End Using
I have a trouble making this code work. When executed, it just creates a correct (with the correct name) file with the extension .txt but the the actual text inside .
Imports System.IO
Public Class Form1
Public mytext As String
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The strange thing is that while debugging, h, t string variables have the correct values, but somehow mystream.write(t) doesnt work (it doesent write anything to my h.txt text file...
I've downloaded ZLIB.NET from here and the example VB.NET code they provide works fine. It's very short so I'll paste it here for reference:
vb
Public Shared Sub CopyStream(ByRef input As System.IO.Stream, ByRef output As System.IO.Stream)
Dim num1 As Integer
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Note that the CopyStream() subroutine is identical. The problem is that although decompressing seems to work fine, compressing does not. If I take a byte stream, compress it and then decompress it using the above code, I get a truncated version of the original stream (as an example, a 360485 byte stream becomes 311518 bytes). The resulting bytes match the original stream up until the point where it's cut off.
The only information I can find about streams being truncated is due to missing stream.Flush() commands but the output stream is flushed in the CopyStream() subroutine.
I am developing a VB.NET 2008 application, consisting of a main EXE application and several resource DLLs.
I need two functions for the DLL:
1) one function to get a list of all files in the resources of the DLL.
2) one function to return 'by name' a resource file as a System.IO.Stream type.[code]...
I am trying to read a xml file (from a stream) like the one below. I need to read the xml element "recipientPhone" first,then I could read element "contents" so that I could save base64 data as file with the name coming from recipientPhone.I am using while xmlReader.read() to read the xml, is there a way that I could read element "recipientPhone" before "contents"?
xml sample:
<fax>
<clientInfo>Attachments: 2</clientInfo>
<contents><contentType>0</contentType>
<data>data1</data>
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I'm trying to use the
OpenSqlFilestream
Instruction but my code did not recognise it What dll i have to load in order to use it?
I have a filename(including it's path) in a string. Now i want to load this .csv file into memory stream. ex: Dim filename as string="C:UsersDesktopabc.csv"
View 2 RepliesI am developing a VB.NET 2008 application, consisting of a main EXE application and several resource DLLs.
I need two functions for the DLL:
1) one function to get a list of all files in the resources of the DLL.
2) one function to return 'by name' a resource file as a System.IO.Stream type.
NOTE: The files will not be "Embedded Resource" (this doubles the size of the DLL), so I think cannot use 'GetManifestResourceStream'.
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I am developing a VB.NET 2008 application, consisting of a main EXE application and several resource DLLs.I am trouble with two functions for the DLL:
1) one function to get a list of all files in the resources of the DLL.
2) one function to return 'by name' a resource file as a System.IO.Stream type.
NOTE: The files will not be "Embedded Resource" (this doubles the size of the DLL), so I think cannot use 'GetManifestResourceStream'.
I currently use:
Return New System.IO.MemoryStream(My.Resources.MyFileName)
but I want it to be called by name.I am adding the resources using the VS 2008 "Resources" tab, from the My Project screen, I'm not manually editing Resources.resxAs I said before, it works with:
Return New System.IO.MemoryStream(My.Resources.MyFileName)
but I need to get the resources by name, which also works by using
GetMAnifestResourceStream
but this requires to set the resources Build Action to "Embedded Resource", which doubles the size of my DLL file.I currently use "None" as Build Action, but I can use any Build Action that does not increase the file size more than the actual resources size.
why this code doesn't work:[code]....
View 11 RepliesI want to open a file with a stream writer. Delete it contains and write random data to it. And finally delete the file.
View 10 RepliesI am trying to write a little synthesizer program, and as a first step I am creating .wav files opened for reading and writing using the code below called from a button click event handler. The audo plays but once, no matter how many instances of the Audio.Play method are called. I also tried closing the file and then calling the Audio.Play method on the full path name. In each case, the audio plays but once. If I click the button again, the file will be played once more. The duration for the audio is one second, so I am sure that it is only being played once every time. I do not want to loop the data. The idea is that when the user plays a new note, I update the file and replay it with the new data. Since the file is recreated every time I click the button, I guess what I *need* is working, but I am still curious why I cannot replay the content of the file.
' Create a file stream object for reading and writing.
Dim FS As New IO.FileStream(fileNamePath, _
IO.FileMode.Create, _
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