Writing To And Retreiving From A Window File's Title, Subject Or Comments Fields?
Jul 9, 2010
VWD 2008 Express. Visual Basic.
When you look at the properties of a Windows file, it has a "Summary" tab. On this tab are fields that can be modified, such as Title, Subject, Comments. How from code behind could I modify these fields and retrieve their values?
Spent ages trying to get this right but am struggling now. I have a list box and textbox, I can happily enter Email addresses into the textbox which are saved into a text file and populated in a list box. I want to be able to select a list item and delete it, along with it's record in my text file. I was going to do it by on the delete list item / button click, it delete's the text file and then writes and a new one with the remaining list items in the list box. Unfortunately it's re-writing the file but either not including the remaining list items. Here's some examples of what I've changed and what populates the text file:
StreamWriter1.WriteLine(Addresses.Items); - System.Web.UI.WebControls.ListItemCollection StreamWriter1.WriteLine(Addresses.Text); - A blank line?!?
The code is below. The reason I wouldn't allow the user to delete the first list item is because I thought the code was working ok but for some reason putting in a blank line to start with, and if I deleted the line it'd delete all file content. No, I don't know why I thought that either.
[Code]....
where I've gone wrong? I've not actually slept since I woke up at 8am yesterday. It's now 11am... today.
I am trying to write some lines at runtime to a text file using streamwriter, but i have to allow only 100 lines to be written to that file, if 101 line is supposed to be written to that file than first line of the file must get discarded/deleted and file must allow writing the 101 line so the file will actually always contain only 100 lines.
From an ASP.Net C# application I need to access the 'Title' property value from multiple (100+) files residing on the local file system.
e.g. Right click a file on your file system and select 'Properties'. In the 'Summary' tab there is a 'Title' property along with 'Subject', 'Category' etc. properties. I am after the value residing in the 'Title' property.
Whilst developing the web application and testing using Cassini, I was able to extract the 'Title' property value using Shell32.dll
The above code doesn't work when running within IIS. The 'folder' object doesn't contain any items.
I have read that the ASP.Net worker process does not have a running instance of explorer - thus no Shell causing my Shell32 code not to function correctly.
Is there another way I can extract the 'Title' property value from within an ASP.Net application?
Based on this piece of code, I want to do exactly like this demonstration. However, correct me if I'm wrong but if two or more users somehow simultaneously access the web page at the same precise nanosecond in time, then wouldn't we have a race condition? So is this piece of code valid? How would I correct this to make it thread safe?
i have table data which i am currently writing to an excel file, but i need to be able to securely password protect the file. Ive been told excel passwords are easy to break, so is there another file type which i can dynamically write to and password protect for emailing elsewhere (and requiring receiver to type password in to access it)?
I have a site and Web.sitemap file added to the root folder of the site.
I want to create a new page that allows the user to change the title and description of the SiteMapNodes in the Web.sitemap file. I have completed it partially, in the sense, I am able to iterate through the nodes in the sitemap file using the following code.
I am using more than one files to read and write to the server. Suppose during writing or reading any of files gets error the already stored files need to be rollback or removed from storing.So that the user agin try to write without error. Simply the all of the files need to be stored into the server without error, of error occurs to any of file none of files need to be read/write
i have write data from db to .txt file,where db have large amount data,i need to wite data into file, if some error occure, then reInitiated that file and write data again without stop process.that is Continuous calling same process
I am trying to create and write a file on a remote server using the below code:
[Code]....
but i am running into issues and getting errors. Below are some tries i have given. My IIS settings are 'Anonymous Access' checked and also 'Integrated windows authentication' checked.
a. As i understand asp.net site would run using ASPNET account, i tried giving full permission to ASPNET account to the folder on the remote server (where i want to drop the file). But i am getting this error - "Logon failure: unknown user name or bad password"
b. The other thing i tried is giving full permissions to 'Everyone' to the remote server folder. But i get the same error as above. But when in my web.config i enable impersonation by using: [Code]....
then the error goes away and everything works fine as expected. The file gets dropped to the network share.
why the scenario (a) doesn't work because that should work as if i give ASPNET account full access to the folder, and my website is running under the same account, then it should work.
Also, in the scenario (b), i believe it is using my domain account, as the impersonation is true without specifying any username and password and also the remote server folder has Everyone access to full control. BUT, as a security breach, i cannot use Everyone account to the remote folder. In that case, how can i make this working.
I was also thinking if i can use the virtual directory as the path to the remote folder, something like http://domain.com/remotefolder but dont know how can i use this approach. Can someone pls share some sample code and the configuration.
I'm making an application which takes image from user upload it to server and then perform any image processing like to convert to gray or invert etc.
My problem is this when i did the process on image to gray it or invert then how to write this new file on server or is there any other way so that i would be able to show this (new) image to user and make it downloadable?
In my application i want to share one .txt for read and write among no. of users. in Button click i m writing data in that file and in tick event of Timer i m reading that file, In tick event i m reading that file based on file based cachin means if file have been changed then only i m reading that file but when i have put m application i IIS then i m not able to get updated file.
I have a button that when clicked, will generate a PDF and write it out to the response.This is the basic structure of the code:
try { using(Stream stream = generatePdf()) {
[code]...
Downloading the file works fine, except that it doesn't complete the postback.If I were to throw an exception above file.Transmit, the error handling would work properly and I would see the message get displayed in my browser. However, if there is an exception after the file.Transmit then nothing happens. The user saves/opens the pdf and the page does not reload.How can I make it so that the postback always completes, that way I can display an appropriate message to the user?
i want to maintain a log of the visitors for a website.. the number of visitors is fix approximate (800), but i have to maintain the record of each visit page wise like page Id, time visited, user id. i am doing it using a database as it was .
i was asked to use a insert query on every page ,(ie each time user visits a page write the log to database), but i dint like the idea.. of making server trips every time the user visits a page and also we have a seperate database server. I had a idea of using XML.. but which is the best way performance wise writing a log in Xml file or insert query in database?
I have the following subroutine in an asp.net application class. The subroutine writes data to a text file upon application login. My question is that if this function was called at the same time by two different users would it cause any kind of error. Is there a need for a try catch?
Public Shared Sub writeToLogFile(ByVal UserName As String) Dim strLogMessage As String = String.Empty Dim strLogFile As String = System.Web.HttpContext.Current.Server.MapPath("~/Log.txt") Dim swLog As StreamWriter strLogMessage = DateTime.Now.ToShortDateString().ToString() " ==> " & UserName If Not File.Exists(strLogFile) Then swLog = New StreamWriter(strLogFile) Else swLog = File.AppendText(strLogFile) End If swLog.WriteLine(strLogMessage) swLog.WriteLine() swLog.Close() End Sub
Is is possible to configure FileAppender in log4net to add new entries at the beginning of log file? Currently it is adding entries at the end and reading newest entries requires scrolling whole log down. It would be more comfortable to read from the beginning.