In my previous WebAPI project before this one, I always achieved multiline display of texts by using the newline.
\n
within the string as follows and it worked, displaying the different options on different lines when I return the string as response.
Message= "What do you want to do? \n" +
"1 Option 1 \n" +
"2 Option 2 \n" +
"3 Option 3"
But the last I used it was in a dotnet 6 application.
Currently, I am working on a dotnet 7 project and when I do the same thing as above, the options appear in one line in the method response.
I have also tried to use Environment.Newline to achieve the newline behaviour but to no avail still.
I have also tried to use StringBuilder as follows:
sb.AppendLine("What do you want to do?");
sb.AppendLine("1 Option 1 ");
sb.AppendLine("2 Option 2");
sb.AppendLine("3 Option 3");
Message = sb.ToString();
Please what am I doing wrong here?
Make sure you've selected the right option:
and for example ,in html
it makes a new line with the css setting white-space:pre-wrap,if you set like:white-space:nowrap,it would display in a line
Some clients would make a new line with "\r\n" instead of "\n",so it also depend on your client
Have you tried $- string interpolation along with Environment.NewLine?
Check the same in console or different browser as sometimes browser might not see it.
Related
I am making a webpage... the controller is written in C# and the webpage is in cshtml. In the c# file, I am constructing strings to be put into the table on the html page. When I have my strings, I need line breaks within them, so I have things like stringpart1 + "\n" + stringpart2 in hope of the webpage displaying the string as two separate lines as I fill my table cells. However, everything seems to print out on the same line. I have also tried "\r\n" and System.Environment.NewLine instead. Any ideas as to a potential fix?
Here is a fix which worked for me. In your .cshtml, use this:
#Html.Raw(System.Web.HttpUtility.HtmlEncode([your content containing \n]))
Line breaks in HTML are represented by <br> tag. Change \n and/or \r to <br>.
Example:
part1 + "<br>" + part2;
Writing a simple log for a program I'm doing and I'm getting troubles with FileAppendText()
I have this line to output various messages to the log:
File.AppendAllText( filePath, string.Format( "{0} {1}{2}", DateTime.Now, message, Environment.NewLine ) );
Problem with this is when I try to use it with a string like this
"This is my first line, \r\n this is my second line \r\n and this is my final line!"
It will just give this result
This is my first line, this is my second line and this is my final line!
when it should be
This is my first line,
this is my second line
and this is my final line!
Is there a way to fix this or do I have to do some dirty fixes?
File.AppendAllText does not modify the string that you pass in. You miust be misinterpreting what you are seeing.
Probably, the tool that you use to look at the file contents has a special way of showing them. It does not support rendering newlines. Use notepad.exe.
Maybe the question is based on wrong data. When you write line, \r\n this you should get two spaces. But your sample text does not have two spaces (line, this). Are you even showing us the exact thing you passed in and got out?!
I resolved the same problem using Environment.NewLine instead of \r\n.
I have a database with almost 2000 code examples that I've collected over the last 10 years that I want to be able to access with a textarea field so I can copy and/or update easily. I'm trying to migrate from PHP to C# on a new domain, but I'm having problems getting it to display correctly.
This is how it looks currently: http://nunyabiz.freeiz.com/csharp/index.html
This is how it's supposed to look: http://nunyabiz.freeiz.com/csharp/index2.html
This is the code that I'm using to display it:
Code.Text = rs["Code"].ToString().Replace("\r\n", "\n");
The "\r\n" characters aren't getting recognized, so I'm guessing that I have to convert, encode or decode it, but I haven't had any luck trying to find something that will work. online.
you can try Environment.NewLine for Linebreaks Environment.Newline
strYourCode = string.Format("Name: {0} LineBreak {1}", yournameVariable, Environment.NewLine);
Try to figure out WHAT line breaks you have in your code samples - there are many variants including html tag br, and then change it to what you need (i think it is Environment.Newline)
And check that your Code control is Multiline
Give this a try .Replace("\r", "").Replace("\n", "<br/>");
I've been writing code for ASP.NET since the start, and today I encountered something I've never seen before. Typically I've looked for line breaks in C# (when posted in ASP.NET from a textarea, for example) by expecting "\r\n". Now I'm using the MVC framework, and the text coming over the wire from a textarea simply has "\n" for line breaks.
Is there something going on in old school TextBox controls that normalizes the line breaks? Since MVC just uses the form data as-is, is this normal? Would love to get some insight.
I have made observation that the actual line break sequence differs from browser to browser.
If you have a multiline textarea on a page and the page is submitted then:
IE returns "\r\n" to indicate newlines. FF returns "\n" in this case.
I tested it somewhere along the end of 2006, so it may be different now.
I do not believe it could have anything to do with WebForms vs. MVC. Both just process submitted input and return it to you as it is.
If you wish to somehow process and replace these characters it would make sense doing it in the long-to-short order:
string userText = form["Text"];
userText = userText.Replace ("\r\n", "<br/>").Replace ("\r", "<br/>");
\n is the line ending variant on *nix-style systems. \r\n is Windows-specific line-ending behaviour.
If you're checking for line-endings and expose your interface to non-Windows environments, be sure to check not only for \r\n but also for \n alone.
Fore more background, check out the Newline article at Wikipedia.
I am using Environment.NewLine :
string userText = form["Text"];
userText = userText.Replace (Environment.NewLine, "<br />")
Also take a look at #Haacked's post about some newline textarea quirks.
Can someone explain to me why my code:
string messageBody = "abc\n" + stringFromDatabaseProcedure;
where valueFromDatabaseProcedure is not a value from the SQL database entered as
'line1\nline2'
results in the string:
"abc\nline1\\nline2"
This has resulted in me scratching my head somewhat.
I am using ASP.NET 1.1.
To clarify,
I am creating string that I need to go into the body of an email on form submit.
I mention ASP.NET 1.1 as I do not get the same result using .NET 2.0 in a console app.
All I am doing is adding the strings and when I view the messageBody string I can see that it has escaped the value string.
Update
What is not helping me at all is that Outlook is not showing the \n in a text email correctly (unless you reply of forward it).
An online mail viewer (even the Exchange webmail) shows \n as a new line as it should.
I just did a quick test on a test NorthwindDb and put in some junk data with a \n in middle. I then queried the data back using straight up ADO.NET and what do you know, it does in fact escape the backslash for you automatically. It has nothing to do with the n it just sees the backslash and escapes it for you. In fact, I also put this into the db: foo"bar and when it came back in C# it was foo\"bar, it escaped that for me as well. My point is, it's trying to preserve the data as is on the SQL side, so it's escaping what it thinks it needs to escape. I haven't found a setting yet to turn that off, but if I do I'll let you know...
ASP.NET would use <br /> to make linebreaks. \n would work with Console Applications or Windows Forms applications. Are you outputting it to a webpage?
Method #1
string value = "line1<br />line2";
string messageBody = "abc<br />" + value;
If that doesn't work, try:
string value = "line1<br>line2";
string messageBody = "abc<br>" + value;
Method #2
Use System.Environment.NewLine:
string value = "line1"+ System.Environment.NewLine + "line2";
string messageBody = "abc" System.Environment.NewLine + value;
One of these ways is guaranteed to work. If you're outputting a string to a Webpage (or an email, or a form submit), you'd have to use one of the ways I mentioned. The \n will never work there.
You need to set a watch and see where exactly your database result string gets double escaped.
Adding two strings together will never double escape strings, so its either happening before that, or after that.
When I get the string out of the database, .NET escapes it automagically. However, the little # symbol is appended to the string, which I did not notice.
So it appeared to be non-escaped to my "about to go on holiday" eye inside the ide.
Therefore when the non-escaped \n was added to the string (as the whole string is no longer escaped), it would remove the # and show the database portion of the string escaped.
Gah, it was all an illusion.
Perhaps that holiday is overdue.
Thanks for your input.
If the actual string stored in the database is (spaces added for emphasis): "l i n e 1 \ n l i n e 2", then whatever stored it there probably has a bug. But assuming that is the exact string there, then the "abc\nline1\nline2" string is what happens when you look at the string which would print as "abcline1\nline2" in a debugger which escapes it (this is a convenience, allowing you to copy-paste out of the debugger straight into code without errors).
Short answer: .NET is not escaping the string, your debugger is. The code which writes a literal "\n" into the database has a bug.