i'm using stream writer to write a text file on client machine, but everytime while i'm writing a new file it over writes the existing one..so now i need to write seperate file each time ...and also i need to create a folder dynamically for first time and save text files in that folder when everytime i use my application....
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Following on from my previous question...
The following code creates log files on a web server:
private void LogMessage(Message msg)
{
using (StreamWriter sw = File.AppendText(_logDirectory + DateTime.Now.ToString("yyyyMMddHH") + ".txt"))
{
sw.WriteLine(msg.ToString());
}
}
The log files are linked to from an admin page on the web site:
foreach (FileInfo file in logDir.GetFiles())
{
Response.Write("<a href='http:// .... /Logs/" + file.Name + "'>" + file.Name + "</a>");
}
I'm getting the problem that after someone looks at one of the log files from the link, that log file stops being written to.
I have write small web-service that recieves query and read txt file for matching. For it I'm using StreamReader.
I'm not waiting that it will be thousands of users in hour for this service, but whats worried me - if some users at the same time will be use that service is it ok? Can text file on server side be readed at same time from some users?
What is capacity for using StreamReader or StreamWriter on server?
I'm populating a generic list from an excel file that contains names of pdf files. Now I want to take each item in the list and create a file from it. Here's what I have so far:
[Code]....
So now, the list called lines contains names of 900 pdf files. How would I take those names out of the list and create files from them?
I have to large files in a database which users can download. The user clicks a link and the following code runs:
[Code]....
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
i trying to write some text to a file in browser system......for this i'm using stream writer as like this
StreamWriter sw = new StreamWriter("c:/Billing report.doc");
but wat i need is browser should open a dialog box and ask open or save.
What is the recommended method of writing and storing class files in VS 2008, I'm using a web application?
View 2 RepliesI am having difficulty using C in the VS IDE. No matter what I write the code always has errors and I am not able to see the end result. I don't understand VS and being that I am supposed to be taking Programming in C as a class, it is hard for me to get my work done because I don't understand VS and I really don't know how to match the two up.
View 3 Repliesi am trying to work up with captcha in my sign up page.Having a google search,i found a .dll which i implemented in my project and it worked fine.Now i want to know that is it a good idea to download the dll files and use it in the project instead of writing the whole code from the scratch?What are the disadvantages of using a dll instead of writing up the entire code form the scratch?
View 6 RepliesI am creating an site where a user uploads an excel file to check if any of the records exist in a database. Then they are returned an excel file with only the records that are NOT in the database.
I was thinking I should do it this way1. User uploads their excel file. The app opens excel file and loads records into a dataset (so far this is working with the code below)2. Using datarow and another function to check if each excel record exists in the database3 If the record does NOT exist, and it is the first record tested, create an excel file called records.xlsx and write the record into the file
4. Check the next record and if it does NOT exist in the database, then check if records.xlsx already exists then open it and write it into it.
[Code]....
Hopefully its clear, sorry if its not, I'm a bit of a novice at this. Is this a good way to do it? Does anyone know of any tutorials that might outline how to open an existing file and write to it?
What I have?I have a ASP.NET page which allows the user to download file a on a button click. User can select the file he wants from a list of available files (RadioButtonList) and clicks on download button to download it. (I should not provide link for each file that can be downloaded - this is the requirement).What I want?I want the user to download multiple files one by one by selecting the required radio button and clicking on the button.What problem am I facing?I can download the file for the first time properly. But, after downloading, if I select some other file and click on the button to download it, click event of the button does not post back and the second file will not be downloaded.I use the follwoing code on the button click event:
protected void btnDownload_Click(object sender, EventArgs e)
{
string viewXml = exporter.Export();
Response.Clear();
Response.AddHeader("Content-Disposition", "attachment; filename=views.cov");
Response.AddHeader("Content-Length", viewXml.Length.ToString());
Response.ContentType = "text/plain";
Response.Write(viewXml);
Response.End();
}
Want to create a web based application for reading and writing excel files.
Issue :
1. Want to upload an excel file and store it some location.
2. Read data from excel file, performing some sorting and filtering
3. Write filtered data to new excel file.
I want to write "upload multiple files at a time" functionality during upload files in dot net.I am not allowed to use JQuery.All i want is core dotnet.
View 2 RepliesI am writing to a CSV that will contain different customer information. Right now when I write to it, it overwrites whatever is in the path right now. Instead of overwriting I would like the new writer.WriteLine to append to the current CSV without overwriting it.
Code
[Code]....
Also, can anyone help me with writing the file to a different location other than my local project file? I need the path to become a server location instead of the CSV folder stored locally.
I'm working on a project in ASP.Net, and it requires reading/writing to files on my server. I'm hosted at GoDaddy, and they swear they've got me at Medium Trust. When I try to read or write files that are in my own domain, I get Security Exceptions. I've tried multiple ways of opening/saving the files and they all return security errors. Here's the most recent error and offending line of code (I didn't save them all, they're all pretty much the same thing):
Exception Details: System.Security.SecurityException: Request for the permission of type 'System.Security.Permissions.MediaPermission, WindowsBase, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' failed.
PngBitmapEncoder pbe = new PngBitmapEncoder();
pbe.Frames.Add(BitmapFrame.Create(new Uri("ornament.png", UriKind.Relative))); <-- Error
I've also gotten the error when trying to read/write using FileStream, Bitmap.Save and new Bitmap("ornament.png"). Could there be a problem with my Web.config? Is read/write supposed to be blocked by medium trust? This is a time-sensitive project and this is a brick wall for me. The deadline is end of business day tomorrow and GoDaddy isn't responding.
I want to write a discount amount which is coming from a Database onto an image. I have taken an image like:
<div style="height: 158px; width: 210px; float: left; position: relative;">
<a id="aproduct" runat="server">
<asp:image id="pimage" runat="server" width="210" height="158" border="0" />
</a>
[Code]....
I want to show discountTag image as background to <td> and show discount amount in a label.
I try for this, but when I do this the big image on which I am showing my discountTag label are not getting aligned properly. I want the o/p like Big image on which discountTag image on which discount amount.
My Visual Studio 2005 program doesn't open CSS files properly - when I open them in VS, it opens them as a text file. It is annoying because if I do something wrong, it doesn't show up the error and I have to sift through it all to try and find out what is wrong. Plus it doesn't show up the hints for the attributes.
View 5 RepliesCurrently I have the text file going to desktop, in ASP how can I prompt a file save dialog for the user? The result is string from the streamreader as "result" as follows:
StreamWriter FileWriter = new StreamWriter(Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.Desktop), "file.txt"));
FileWriter.Write(result);
FileWriter.Close();
I'm using a streamwriter to write a tab delimited file (for import into Mail Chimp), but the last line of the file is always missing a few characters. Doesn't matter what size the List<t> is (its small - about 128 lines)
Code:
protected void WriteTempFile(List<ChimpExportModel> list, out string filepath)
{
Guid UniFileName = Guid.NewGuid();
string path = Server.MapPath("Temp");
string writepath = string.Concat(path, @"" + UniFileName.ToString() + @".txt");
[Code] ....
I've looked at the last item of the List in the debugger and it's just like all the rest. On write, its always cutting off the last characters - which happen to be '.com'. Kinda important. Some posts say to flush and close - tried it. No change. Last characters still AWOL.
i have been trying to solve this for hours with no luck. i seem to be missing something fundamental.
i have a remote FTP server with a file called log.txt on it, i wish to allow web users to download this file to their local drive to a designated folder.
i have a function calling this sub i found on the web with the filename to download.when trying to run this code i get this error:
" Could not find a part of the path 'C: empFtpDownloadsFolderlog.txt'. "
[Code]....
if i replace this line:
[Code]....
i get no error but the file is not in the TempPath. (it shows it to be saved to "C:WindowsTEMPlog.txt" )
i have a feeling its being save on the server instead of my local drive.
I have the following set up and I keep getting an "Object reference not set to an instance of an object" error on the line right below "Catch ex as Exception". I don't know what could be causing the problem?
[Code]....
I have these lines of code set up almost exactly the same, except with different recipients, in 3 seperate websites and they all write to the ActivityLog.txt file just fine. When I comment out the logWriter.WriteLine lines of code, everything goes through just fine.
How can I remove the text box associated with a Browse button on my email page?The text box is redundant since I am attaching files (file upload) to my email message one at a time. Or, is there a standard function such as the Link (Attach a File) in Gmail that opens the user's hard drive directory?
View 2 RepliesHow to restrict the fileuploader control to restrict for notepad only.
If i have choosen the file other than the notepad, it should show me an error.
How to Retrieve .text files from other website folder using webclient
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