Web Forms :: Reading And Writing Textfile In ASP.net
Dec 20, 2010
I am trying to read and write text file like that, writing
StreamWriter wr = new StreamWriter(Server.MapPath("aa.txt")); wr.Write("aaaa" + System.Environment.NewLine); wr.Write("bbbb" + System.Environment.NewLine); wr.Write("bbbb" + System.Environment.NewLine); wr.Close();
Reading
string line11 = ""; using (StreamReader sr = new StreamReader(Server.MapPath("aa.txt"))) { while ((line11 = sr.ReadLine()) != null) { TextBox1.Text += line11 + "
"); } }
and want to display
aaaa
bbbb
bbbb in TextBox1.Text
Writing is not problem , The problem is reading, to display line by line on textbox , we use "
" in normal windows form c sharp , but in asp it is not working. also is there anything instead of System.Environment.NewLine when writing. And is there any converter between NORMAL WINDOWS FORM csharp to ASP .NET C SHARP.
View 4 Replies
Similar Messages:
Jul 19, 2010
My whole project is about reading data from textfile(the readings is separated by delimiters) and plotting out the graph. But somehow i am meetnig some problems as i think my method is wrong... It's something like this..what should i do?
Private Sub CreateChart()
'Create some dummy data
'Dim random As New Random()
'For pointIndex As Integer = 0 To 9
' Chart1.Series("Series1").Points.AddY(random.[Next](20, 100))
Dim h, g As String
Try
Dim lc As New StreamReader("C:Tempdatalogger" & date1.ToString & "int_ana_" + date1.ToString + ".txt")
Dim ff As String '= Label5.Text & ":00"
'Dim sr As String = lc.ReadToEnd
Dim line6 = lc.ReadLine
Do While Not line6 Is Nothing 'loop until end of file
If IsNumeric(line6.Chars(0)) Then
Dim fields5() = Split(line6, ";")
'Dim fields5() = Split(s.Substring(sr.IndexOf(ff)), ";")
h += fields5(0) + vbCr
g += fields5(3) + vbCr
End If
line6 = lc.ReadLine
Loop
Catch ex As Exception
End Try
For pointIndex As Double = 0.0 To 2.0
Chart1.Series("Series1").Points.AddXY(h, g)
Next
'line display chart
Chart1.Series("Series1").ChartType = SeriesChartType.Line
'set the bar width
Chart1.Series("Series1")("PointWidth") = "0.1"
'Show Data points labels
Chart1.Series("Series1").IsValueShownAsLabel = True
'Set data points label style
Chart1.Series("Series1")("BarLabelStyle") = "Center"
'Draw Chart as 3D Cyclinder
Chart1.Series("Series1")("DrawingStyle") = "Cylinder"
End Sub '****End of Graph
View 3 Replies
Mar 9, 2011
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
View 2 Replies
Aug 24, 2010
I have a web page (Provider) that creates an XML file to be send to the Requester in this fashion:
1. A Requester page needs to send an XML file to the provider page
2. Provider will read the XML file to authenticate the request
3. Provider will Create an xml file with some data.
4. Provider will send the xml file back to the Requester.
Can anyone provide sample code for both the Requestor page (step 1) and the Provider page (steps 2 & 3)
View 1 Replies
Mar 16, 2011
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.
View 2 Replies
Aug 15, 2010
Is there a way to read and write files on a client's computer using a web based application? Basically I need to create a internal app that will take two input CSV files and convert it into an output CSV file that is written to the same location as the input files on the client's computers.
Since this is an internal app, I don't have to worry about security. I can easily write a C# app for this but I want to create a ASP.NET app (or any other format). I even looked into creating a HTA application.
View 1 Replies
Feb 10, 2010
How do you go about reading and writing to a virtual directory in iis 7?
View 2 Replies
Mar 4, 2011
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?
View 6 Replies
Mar 4, 2011
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.
View 1 Replies
Nov 21, 2010
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.
View 2 Replies
Jul 27, 2010
I have a process where I ftp a textfile to a webserver and then process the file (load it into a database). The textfile is then deleted. How do I protect the textfile from being viewed/ accessed by a user while it exists? I'm using ASP.Net 2.0
View 3 Replies
Jan 15, 2010
I have a text file that I want to read line by line from into a string variable. On each click of a button I want to read the next line.Solutions I find reading from a textfile do it all at once though (in a while loop), displaying all lines on screen, but I don't want that. I want to fill one variable with the subsequent lines in the textfile, one at a time, everytime by a click on a button.How can I 'loop' through a textfile in this manner, without 'file already in use' errors etc.?
View 1 Replies
Feb 5, 2011
I tried to pass datetime from a textfile to the form and using it to get the classes from web service.
the site has 4 countries. based on the country value from session , i load the text file.
It works perfectly for 3 countries without any issues. but not for the fourth country.
View 3 Replies
Nov 30, 2010
Can u tell me how to read textfile from 15line or from particular line that means i have to ignore first 15 lines of textfile and i should start from 16th line.
View 2 Replies
Jun 25, 2010
i am writing these 3 lines to a text file storing ID nubmers (each on thier own Line)
TableID1: 10
TableID2: 1
TableID3: 8
To textfile "TableID.txt"
Using StreamReader I would like to read the ID's back to cs for use else where
How would i do this ?
StreamReader Read_SQLConfig = new StreamReader("TableID.txt");
View 4 Replies
Nov 4, 2010
I want to delete every row that doesn't contain "." in my textfile. I have tried different ways but i can't get it to work!This is my code!
[Code]....
My textfile can look like this:
110158;778.59;;
110174;207.87;;
110208;;;
110219;;;
110279;;;
110283;;;
110514;95.33;;
110543;392.37;;
110550;253.38;;
This is what i wan't it to look like:
110158;778.59;;
110174;207.87;;
110514;95.33;;
110543;392.37;;
110550;253.38;;
View 2 Replies
Mar 7, 2011
I know this is probably a pretty easy thing to do and it is if I can upload the file and store it onto the hard drive of the server. What I need to do is read the text file into memory and then parse through it one line at a time. Anyone have any code that demonstrates that?
View 8 Replies
Mar 10, 2011
I was trying to go through this tutorial:
[URL]
but when I tried to add the service reference to the silverlight app, the Add Service Reference window would show me that there was a service file, but the node wouldn't expand to show the rest of the files that contain the services and what not. I got this error instead:
"An error occurred during the processing of a configuration file required to service this request. review the specific error details below and modify your configuration file appropriately."
"Parser Error Message:There is no service behavior named 'AdventureWorks_WebServer.Service1Behavior'."
"Metadata contains a reference that cannot be resolved: 'http://localhost:55579/Service1.svc'.
The server did not provide a meaningful reply; this might be caused by a contract mismatch, a premature session shutdown or an internal server error.
If the service is defined in the current solution, try building the solution and adding the service reference again."
here's my web.config file:
[Code]....
View 1 Replies
Mar 1, 2011
I've been looking at implementing Url Re-Writing into my site, and have been confused by the sheer magnitude of different methods of doing it!
Anyway, what I'd like to do is convert my existing url into something more readable and search- engine friendly.
For example, my current Url is '~/Magician?localityId=x' (where x = the id of a place name)
and I'd like it to be '~/placename-Magician' (where placename = that retrieved from the querystring)
I use the localityId to query the database with, in order to get the relevant place name.
Does anybody know the best method to use for this, and can you point me in the direction of a good tutorial for that method?
View 7 Replies
Oct 27, 2010
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?
[Code]....
View 3 Replies
Mar 25, 2010
i have an IF statement set so that when somebody selects an option from a drop down list it displays some text into a text box to do with the selection. I have an IF statement set up which seems to work as it compiles and i have the results write into a variable. I then want the text box next to the drop down box to display what is written into the variable but i can't figure it out. Here is the code i have so far:
<form runat="server">
<asp:DropDownList id="DropDownList1" runat="server">
<asp:ListItem Value="NA">Select</asp:ListItem>
[code]...
View 11 Replies
Nov 12, 2010
I want to code a image link like this...
String p = ""
P = P + "<asp:Image ID='Imageprofile runat='server ImageUrl='~/images/"+ x[5].ToString() +"'/><br/><br/>";
Literal2.Text = P;
But this doenst work,
View 6 Replies
Mar 10, 2010
i plan to begin develop and accounting web application , before to start
like which framework to use 2, 3.5, or 4
use the object oriented approach or the normal webforms
security issues
performance issues
View 1 Replies
Jun 16, 2010
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....
View 3 Replies
Jan 22, 2010
i wrote code for mail sending, iam images in that mail also in that body i gave <img src="[URL]/Admin/imagesfolder/webdesign.gif"> bu it took <img src="[URL] now what can i do if giving some other website URL's it tooks prefectly.
View 2 Replies
