Server And Then The Server Converts That Word File To A .TIF And Sends The Image Back?
Feb 25, 2011
I have a client/server application set up that the client sends a word file to the server and then the server converts that word file to a .TIF and sends the image back.The stuff I have now works.Say if I sent the size of the file and the actual file byte() to the server back to back, would the NetworkStream contain both back to back? This what I though would happen. So I implemented a kind of 'turn' based interaction during the duration of the conversion process.
I have created a few months ago a simple tool in vb.net, that sends an xml code to server, and that server sends response after a while. Everything is performed in http session, for that purpose I use webbrowser control and webclient. I know it could have been solved in different way, however iam not an expert in vb.net, and also didnt want to spend too much time on it. Anyway it worked, until they had changed something on the server. Let me explain in a few words how that tool works, so it will be easier to understand the problem.
In the first part, I open an URL in the webbrowser control, subsequently I enter xml code in the textarea on that page and click on the submit button. In result of that I get another page with some data on it, namely links to xls files. In the next part I use webclient for downloading those files. What is important for all of these operations I need to use the same http session id.
So, simply by now, i just set headers in webclient - WebClient.Headers.Add("Cookie", WebBrowser1.Document.Cookie.ToString) What have guaranteed to use the same session id by the WebClient. However, after the change made on the server mentioned before, the JSESSIONID value is not available in that string. When I use https analyzer (fiddler), I can see that value there...until moment when I am using WebClient. Of course due to that fact, the webclient won't download files for me, because the session id is not the same.
There is one more thing, what would be useful. When I checked the cookies file on my harddrive, I saw that line starts like #HTTP_ONLY. I think that would cause that problem with jsessionid.
Now, I am coming to my question Do you have any idea, how I would get that JSESSIONID value ? It is sent from webbrowser control, however don't know how to get it.
Now, if any user enters the year, and uses the browse button to select any photo, and then clicks submit, i want that particular photo to be uploaded and saved on the my file system ( where the code is present).
I'm not sure what to use to insert a file that's located on the server into the sql database. I've read a bunch of articles but none of them show how to just grab a file without using fileupload.
I want to send a image file from server to client?i am using this code for sending but i can't send the image....... and i also need some receiving code.
1.Public Sub SendImage(ByVal sndImg As String) 2.Try 3.Dim ns As System.Net.Sockets.NetworkStream 4.Dim client As System.Net.Sockets.TcpClient
I have a field in a SQL Server 2005 DB of type 'image' that contains documents, mostly pdfs. When I view the field in the database, it looks as though the data is stored as a hex string. I have extensively googled and came up with the VB.net function below to convert the field to an actual file, but it only outputs a file containing the string of hex characters rather than the file that the field is supposed to represent.
This is a sample of the fields' data (I have truncated it for privacy purposes):
[Code]....
And is it possible to open the file straight from a query in SQL server?
Here is the code I used. everything works fine, but i need a little different code to upload image.
Private Sub btnAttach_Click(ByVal sender As System.Object, _ ByVal e As System.EventArgs) Handles btnAttach.Click Dim iLength As Integer = CType(File1.PostedFile.InputStream.Length, Integer) If iLength = 0 Then Exit Sub 'not a valid file Dim sContentType As String = File1.PostedFile.ContentType [Code] .....
I am not using with cmdinsertattachment. I am using Html - Input(File) from the HTML toolbox. the ID of the input file is ID="upldimg". So how do I insert this into my table which is - Column1 ID identity Column2 Img image Column 3 Description varchar(200).
The insert statement like - INSERT into table1 (Img, Description) values (???, txtdescription.text) Do I do upldimg.text in the insert statement?
I am wanting to be able to have a feild in sql server database that the user can open a file dialog and select an image to insert then save. can this be done, and how?
I have a VB.net application that gets data off our server with ODBC and populates and saves a Word Document. When I try to deploy it to another computer it will get the data just fine and populate the first document, but it will crash before saving it. I've installed the .net framework 4.0, Microsoft Data Access Components, and the Microsoft ODBC .net data Provider. The error code is 0xC0000005, which is from what I can see is called an "Access Violation Exception." It works fine on my computer.
I am building a site for our company to share files between all users but administrators will be the only users who can add new files to the site.I need the administrator to be able to upload a file to a folder on the server and at the same time create a new record for that file and include a title, description, url of file, and other details in the database. In one click.
this is the code i used from this site. everything works fine, but i need a little different code to upload image-here's the code -
Private Sub btnAttach_Click(ByVal sender As System.Object, _ ByVal e As System.EventArgs) Handles btnAttach.Click Dim iLength As Integer = CType(File1.PostedFile.InputStream.Length, Integer)
[code]....
i dont have these parameters. i only have 1 field in sql server table that says Img and has image datatype. how do i use this code to get my image in db using this insert statement?insert into table1 (img) values (???)
I have developed a VB.NET program using a strongly typed dataset. This dataset has its connection to a SQL Server 2008 R2. The software should now be additionally used offline. The database should be exported to a *.sdf database. If no connection to the SQL server is produced, the software have to try to connect to the *.sdf database.I would like to achieve:
1. Export the data in the SQL Server 2008 R2 database to a local *.sdf file.
2. This *.sdf file has to work as an alternate connection string in the strongly typed dataset.
I'm having issues with the way I've been reading my image datatype blobs from my SQL database (code below). This code works fine when I access this page directly. The PDF will open and works just fine. However, when I try to use this page to download a file and save it to the file-system programmatically, it fails (500 server error) and I've verified that it's the same URL either way.So, my question is what is the best way to download a file from a database image datatype and save it to disk?PDF.aspx
I'm trying to zip a file that is stored on SQL Server as a blob image field and when downloading the zip file it says the file is corrupted.. or the file will open but contains some crazy characters. I've tried WinRAR and 7zip and no luck. I checked out [URL] and tried to kind of combine the browser attachment code and the memorystream/byte array code and no luck.
Here is my code snippet: Try BinData = DirectCast(dt.Rows(0)("ImageField"), Byte()) Catch ex As Exception End Try Dim blen As Integer = BinData.Length [Code] .....
I have several programs that I wrote in Visual Basic.net 2003 that I run from a server at work. We upgraded to Visual Studio 2008 recently and I converted my code to that version. I rebuilt the .exes and tried to run it from the server. It said I needed to upgrade the framework on the server, which I did. Now when I run the .exe file from the server I get a runtime error:
Runtime Error! Program: d:... This application has requested the Runtime to terminate it in an unusual way. Please contact the applicaiton's support team for more information.
These programs are very important to the day-to-day operations of the company I work for. I did backup the software before converting it, so we're running normally right now, but there are modifications and upgrades I need to make as soon as possible, but cannot due to the programs crashing when I run the on the server.
How to correctly insert image data from XML file to database table using sql server CE and openxml,XML file is written by vb.net DataSet.WriteXml method?image data is stored in database table is :
0x89504E47.my XML file Content after written by WriteXml method is : <?xml version="1.0" standalone="yes"?> <Data> <Table> <image>iVBORw0KGgoAAAANSUhEUgAAAcIAAAGuCAYAAAADLg..</image> </Table> </Data>
but after inserting with openrowset and openxml using stored procedure to another database table its value changes to this :0x2F0039006A002F00340041004100510.and is not the first value and raises an error in vb.net for opening image from database.
In my scenario, users are able to upload zip files to a.[url]....I would love to create a "daemon" which in specified time intervals will move-transfer any zip files uploaded by the users from a[url].....From the info i gathered so far,
The daemon will be an .ashx generic handler.
The daemon will be triggered at the specified time intervals via a plesk cron job
The daemon (thanks to SLaks) will consist of two FtpWebRequest's (One for reading and one for writing).
how could i implement step 3?
Do i have to read into to a memory() array the whole file and try to write that in b.example.com ?
How could i write the info i read to b[url].....?
Could i perform reading and writing of the file at the same time? No i am not asking for the full code, i just can figure out, how could i perform reading and writing on the fly, without user interaction.I mean i could download the file locally from a.example.com and upload it at b.example.com but that is not the point.
desktop application I need to refer and load some files to manipulate (Like dBase III .dbf files) or to show (ESRI .shp files). As the number of my files changes, I need to have these files on a server and then when I want to load them in my desktop application give the path on my server based on IP address and Port number
Are there any good tutorials/links I can work through. I want to make my pc a file server or an ftp server through vb.net. How would I go about doing it?
i want to type in a name to a textbox like type in "Ben" to textbox1. Then i want to click a button and have correlating numbers, say 126 show up in the textbox2. Im using a function to do this, how would i write a function that takes the string in textbox1, goes through each letter and sends back a numerical value for the letter through the function. I know how to do this with text files with stream reader, but don't know how to do this with strings.
I have created a database in SQL Server 2008 Express Edition. Can I write a program in VB.net express to take a daily backup at a specified time? What code do I need to write?
I have a project now where I will have a large chunk of CSV text, like 60 lines or more, and need to pass that from the client to the server. I know it would be weird with GET, but how would I store the multiline text so that I could later split it up, etc at my application?
I need blog software for IIS7 and a SQL Server 2008 backend. I don't know if this is required, but the application (website) I'm hosting is in asp.net (vb.net). I checked out das blog, and graffiticms and they're very old.
I have a series of DML and DDL(Drop View only) statements that I need to execute under single transaction from VB.net app. I m using commandObj, and kept above all I kept beginTransaction statement. Everything is working fine expect when error is returned by Drop statement. If Drop statement returns error then whole transaction is rolledback. I do not want tthis. I want to continue even if Drop fails keeping the other DML statements that were executed before Drop.
this is the first time i am calling a stored procedure via vb.net and i would like to make sure i have everything correct before i execute it. This is my code:
[Code]...
The stored procedure returns 6 colums worth of data and i would like to add that data to a listview. I'm not sure i have the correct sytax for doing that but this is what i used in my previous sql code (running a query with, not a stored procedure). Also, i'm not sure how to go about getting data for the @xxx names above from a textbox? How do i pass the values into the @xxx names from the users textbox? The MS SQL mangement studio code is this for the the stored procedure:
