making a WCF service before or do know anything about them, so this should be pretty simple. I have to get this "program" to take an excel file from a folder, and send it to this service but I keep getting this very specific error message:
The remote server returned an unexpected response: (400) Bad Request.
Probably one of the most specific error messages I have come across in my days. This is my code for the program, and what I have as his "service reference".
vb
Imports System.IOImports System.ThreadingImports System.Net.MailImports System.TextImports WindowsApplication1.ServiceReference1Imports SystemImports Microsoft.VisualBasicPublic Class Form1 Const Processfolder As String = "C:TestScottsCrap" Const Processedfolder As String = "C:TestScottsCrapCrap" Const ErrorFolder As String = "C:TestScottsCrapError" Private Sub Button1_Click(sender As
Private Function GetMD5(ByVal file As String) As String Dim md5 As MD5CryptoServiceProvider = New MD5CryptoServiceProvider Dim f As FileStream = New FileStream(file, FileMode.Open, FileAccess.Read, FileShare.Read, 8192) md5.ComputeHash(f)
[code]....
It works fine, but when working with very large files on the network my users sometimes panic.I'd like to add a progress bar that updates based on the progress of the hashing through the file.So, my choice are either to manually create the hashing process, which I believe will be much slower,or somehow tap in to the position value of the filestream and use that to update a progress bar.I'd be happy to tap into the events of the MD5CryptoServiceProvider if I could, but I don't see anything there.I have searched the net to try to find an example and have only found code that works by reading line by line from the filestream, not from it being passed to another control/service.
The goal is to write data to a SQL Server 2008 FILESTREAM file using VB.Net. An "Access Denied" message occurs when creating a FileStream object in the code(see red underlined code below). SQL Server 2008 is configured to "Allow remote clients to have streaming access to FILESTREM data" along with "Enable FILESTREAM for Transaction-SQL access"... What configuration setting is missing and causing the "Access Denied" message? Figure 1.) Code used to stream data to SQL Server managed file
I am trying to read a file and note the last position in the file. The next time I look at it, I want to pick up where I left off. What I'm finding is that sometimes when it comes back to the file it is 2 characters further in than it should be. The code I am using is:
Private Sub Read_Log(ByVal skip As Boolean, ByVal recursive As Boolean) Dim logfilestream As FileStream Dim logreader As StreamReader
[Code]....
I'm thinking about backing up to check previous characters - but I'd rather not hack over the problem if there is an actual fix to it.
i have a Windows service that is hosting a WCF service through net.tcp and this is working great. I have also created a WCF service application. I am trying to add the net.tcp service reference to the service application. Then I add it to the GAC that goes ok but if I try to RegAsm the WCF service application to allow it to be called from Server.CreateObject I get the error:
Warning: Type library exporter encountered a type that derives from a generic class and is not marked as [ClassInterface(ClassInterfaceType.None)]. Class interfaces cannot be exposed for such types. Consider marking the type with [ClassInterface(ClassInterfaceType.None)] and exposing an explicit interface as the default interface to COM using the ComDefaultInterface attribute.
It does not work. I have tried to call it through a class library but this does not work either as the end point is not set correctly.
I have a VB2008 application which can control a windows service i.e. start, stop, pause etc. This runs ok on a Windows XP machine but not on a Win 7 machine (message is - Service error cannot open <service name> service on computer '.') ( if I stop the UAC then it runs ok ). It seems to be a rights issue,
I am attempting to read specific lines of GIANT text files (> 150 MB) with hundreds of thousands of lines. The files are contained on an FTP site. I can successfully open the files using FTPwebrequest and streamreader but to get to a specific line using streamreader, you have to read every line before it. Obviously this takes a lot of time when you need to get to the millionth line.
A much faster way, I think, would be to use filestream and the filestream.position function. However, I'm not sure how to open a file as a filestream from FTP. I have tried:
Dim ftpaddress as string = "ftp://####@ftp.textfile.asc+" Dim fileStream1 As New FileStream(ftpaddress, IO.FileMode.Open, IO.FileAccess.Read)
I'm making a type of download manager which downloads parts of a file using HTTPREQUEST.addrange. The parts download without a problem and currently I use 5 instances of the same class to download the parts simultaneously each one downloading a different section of the file. Now my problem is that I don't want to save each part as a file then merge them later, I want to use a singular filestream and append everything asynchronously. In the code below I attempted to use the seek method but it feels like it changes the seek for all of the other parts as well.
i searched a bit but i cant find something useful.i need to take my files to filestream (i can do this with file paths)and i wanna save this files to somewhere else on my program. Is it possible that with the using FileStream?
I am trying to read in a file and store the byte position of each line read so that I can write out to another file the records in any order that I want. I am doing more manipulation of the lines, hence why I need the line position from the original file, but for simplicity sake, I am just including code to display the problem I am encountering. When I read in the file, I am getting the correct file position, but when I write out the lines, every 1024 characters it is re-writing whatever current line it is on. I am assume there is some buffer that is coming into play that I am not familiar with,
VB.NET application which allows user to split a file in smaller files. However the stand alone executable of the application,had a permission problem using filestream to read a file without an OutOfMemory exception, while selecting to split locatein certain directories like "C:".To solve the problem i checked My Project window and the "Security" tab, and i tried checking the checkbox: "Enable ClickOnce Security Setting" and selecting "fulltrust application". This added to my app.manifest these lines of code:
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
I am using BinaryFormatters (System.Runtime.Serialization.Formatters.Binary.BinaryFormatter) and FileStreams (System.IO.FileStream) to perform simple Open, Save, and Save As commands. I am using a separate FileStream and BinaryFormatter in each method.
My issue is that there is a delay for between four and ten or so seconds after performing any of those abilities before you can perform any other of them. Apparently the file is open in "another process", which (my guess) is the FileStream.Let's say I save and close a file in my app. I then go File > Open and select the same file and go to open it. I get that error returned.This isn't really an issue with the code, it's more me asking what the reasons are for why this is happening. What would be a way to work around this?
I have a filestream, and I want to save a file from that filestream? Like there are bytes in that file stream, and from those I want a "file.exe" to automatically appear on my desktop.
I'm using a code snippet, and I think this is the important part: Dim fstr As New FileStream("file.exe", FileMode.OpenOrCreate, FileAccess.Write) fstr.Write(validArg1, validArg2, validArg3) fstr.Close()
Do I have to use a for loop? Or is there a function like this: IO.File.WriteAllBytes(myPath, fstr.AllBytes)
I am trying to build a resource file for a website basically jamming all the images into a compressed file that is then unpacked on the output buffers to the client. my question is in vb2005 can a filestream be multi threaded if you know the size of the converted file, ala like a bit torrent and work on pieces of the filestream ( the individual files in this case) and add them to the resource filestream when they are done instead of one at a time?
The file read is a mp3 or wav file.But my code Comb_Audio_Length, cannot determine the bitrate correctly as different mp3 and wav file have different bitrate....How can I read the bitrate value so as to calculate the audio length correctly?
Dim fs As FileStream fs = New FileStream(strFilePath, FileMode.Open, FileAccess.Read) Dim filesize As Int32
My goal is to upload a string to a txt file on an ftp server.Here is what I have found so far:
vb Dim clsRequest As System.Net.FtpWebRequest = _ DirectCast(System.Net.WebRequest.Create(RemoteFilename), System.Net.FtpWebRequest) clsRequest.Credentials = New System.Net.NetworkCredential("usr", "pw")
[code]....
Is there a way to convert a String into something that clsStream.Write will accept?
I am making a server program, it works, cool.Made it display the info coming in via a textbox, the number of users connected, etc.I based it off of one of the members heres examples (jmcilhinney).However, I am kind of in a rock and a hard place.Do I try and convert it to a windows service so its on all the time? Or do I leave it in a exe format?I have never touched windows services before, but they look promising.However, this will be residing on a collocated server running Windows Server 2003.The problem with that is, if I run it. Person B, C, D, E, whoever.. can not see it due to the virtualized desk tops of RDC (even under the same username).I am kinda curious if I should make it a windows service, then make my 'display' program that just.. remotely taps into it to control it, and view stats and such.The 'server' will take info sent from the client, and add it into a database, then pass back some commands and such.
I've got a service running (well, it doesn't crash), but when I try to add a Service Reference to it, I keep getting:
Metadata contains a reference that cannot be resolved: 'net.tcp://localhost:55555/mex'. Metadata contains a reference that cannot be resolved: 'net.tcp://localhost:55555/mex'.
If the service is defined in the current solution, try building the solution and adding the service reference again.The pertinent parts of my config file are:
I upgraded to VB2010 from VB2008 early this year and have been working on a Windows Service which I am now debugging. When I was using VB2008 in Windows XP SP3 I would put a Stop statement in the code and when execution got to it a dialog would open asking if I wanted to debug it using a development environment listed in a provided list. The list contained the VB2008 VS IDE which I selected which would in turn transfer me to the IDE in debug mode. I was very happy with this setup.
Now I am using VB2010 with Windows 7 and when the execution reaches the Stop statement the service just stops. It no longer offers the choice and ability to "jump" into the development environment via the dialog that I mentioned.[code]...
I did a search on the internet but came up with very limited results. I'm using asp/vb and need to create a n application that does the following steps:
1. User defines web service URLs to WSDL pages .. populated in combo drop down (already coded) 2. User selects web service - Clicks Connect 3. User is prompted for any input fields the web service requests. 4. Output (in XML) is displayed after input fields are populated.
I know how to reference web services in the development environment, and use them... but have no idea how to dynamically create them and show the input fields requested.
I'm trying to write a file in chunks in a loop but the filestream.write just causes the sub to end the second time round but the first chunk it written and the savefiledialog remains?
edit: I was using an offset which I shouldn't have so now it writes the file just fine but the savefiledialog doesn't close itself?
Here's the catch - for the program I'm making I would like to avoid creating a copy of the file in its totally unencrypted state (I'm using a modified, quick-and-dirty XOR cipher for that. It's secure enough for my purposes and faster than the stronger encryption). Anyhow, what I would like to do is read a block of data, de/encrypt it (in memory) and then write the changed bytes to the same location they previously would have been within the file.
I've found the problem a little outside my programming abilities, so I was wondering if anybody had a pre-made solution, links to appropriate examples, or an all out explanation.
I am trying to replace an existing bitmap using a filestream. I can do it once, but if I try to replace it again, using the same filestream command, I get the following error:
"The process cannot access the file 'F:\base.bmp' because it is being used by another process."
Private Sub btnSquare_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnSquare.Click Dim image As New Bitmap(pic.Width, pic.Height)
