Develop Reference

c# Newtonsoft : get json token with name containing special character

I have some Json files containing special character like this :
{
"someProperties" : "someValues",
"$ROOT_QUERY.searchResults({\"path\":\"/some/url\"}).features":
{
"propertyOtherA": "valueA",
"propertyOtherB": "null",
},
"$ROOT_QUERY.searchResults({\"path\":\"/some/url\"}).otherText":
{
"propertyOtherA": "valueA",
"propertyOtherB": "null",
}
}
How can I set the token path to get it ?
When I try the standard path, I get a Unexpected character exception
string path = "$ROOT_QUERY.searchResults({\\\"path\\\":\\\"" + request.RequestUri.PathAndQuery + "\\\"})";
var token = jObject.SelectToken("$." + path + ".features");
I also tried to replace string in Json, but the string.Contains method is not returning true, whereas it works fine in notepad.
I also tried simple Regex, but i've not succed to make it work.
My last idea is atomic Regex, but before entering to this hell, I'm trying to ask you if I can any chance to get it with a simplier way.
Thank you

You need to escape path using '[]' - note that .features should also be included:
var path = "['$ROOT_QUERY.searchResults({\"path\":\"" + request.RequestUri.PathAndQuery + "\"}).features']";
var token = jObject.SelectToken("$." + path);
Console.WriteLine(token);
You need to escape this entire path, because you have multiple "reserved" characters there: $, ., () (see this non-oficial documentation). See other escaping examples here.
demo.

Splitting strings with slashes in C#

I have the following types of strings. One with three slashes and one with two:
a) filepath = "/F00C/Home/About"
b) filepath = "/Administration/Menus"
What I need to do is a function that will allow me to get the values of "home" and "administration" and put into topMenu variable and get the values of "Menus" and "About" and put this into the subMenu variable.
I am familiar with the function slashes = filePath.Split('/'); but my situation is not so simple as there are the two types of variables and in both cases I just need to get the last two words.
Is there a simple way that I could make the Split function work for both without anything to complex?

What's wrong with something like this ?
var splits = filePath.Split('/');
var secondLast = splits[splits.Length-2];
var last = splits[splits.Length-1];
Remarks:
Any check on the length of splits array (that must be >= 2) is missing.
Also, this code works only with forward-slash ('/'). To support both backslash and forward-slash separators, have a look at #Saeed's answer

Am I'm missing something or you just want:
var split = filepath.Split('/');
var last = split[split.Length -1];
var prev = split[split.Length -2];

var items = filePath.Split('/');
first = items[items.Length - 2];
second = items[items.Length - 1];
Also if this is a actual path you can use Path:
var dir = Path.GetDirectoryName(filePath);
dir = Path.GetFileName(dir);
var file = Path.GetFileName(filePath);
Edit: I edited Path version as the way discussed my digEmAll.

Fetching a segment of the URL in the address bar

This is what I tried:
string myURL= "http://mysite.com/articles/healthrelated";
String idStr = myURL.Substring(myURL.LastIndexOf('/') + 1);
I need to fetch "healthrelated" ie the text after the last slash in the URL. Now the problem is that my URL can also be like :
"http://mysite.com/articles/healthrelated/"
ie "a Slash" at the end of that text too. Now the last slash becomes the one AFTER "healthrelated" and so the result I get using
String idStr = myURL.Substring(myURL.LastIndexOf('/') + 1);
is empty string..
what should my code be like so I always get that text "healthrelated" no matter if there's a slash in the end or not. I just need to fetch that text somehow.

Try this.
var lastSegment = url
.Split(new string[]{"/"}, StringSplitOptions.RemoveEmptyEntries)
.ToList()
.Last();

Why don't you use Uri class of .NET and use segments property:
http://msdn.microsoft.com/en-us/library/system.uri.segments.aspx

What you can do in this situation is either using REGEX (which I'm not an expert on, but I'm shure other ppl here are ;) ) or a simple:
string[] urlParts = myURL.Split('/');
and take the last string in this array.

C# Regex.Replace

this is my Set of string inside richtextbox1..
/Category/5
/Category/4
/Category/19
/Category/22
/Category/26
/Category/27
/Category/24
/Category/3
/Category/1
/Category/15
http://example.org/Category/15/noneedtoadd
i want to change all the starting "/" with some url like "http://example.com/"
output:
http://example.com/Category/5
http://example.com/Category/4
http://example.com/Category/19
http://example.com/Category/22
http://example.com/Category/26
http://example.com/Category/27
http://example.com/Category/24
http://example.com/Category/3
http://example.com/Category/1
http://example.com/Category/15
http://example.org/Category/15/noneedtoadd
just asking, what is the pattern for that? :)

You don't need a regular expression here. Iterate through the items in your list and use String.Format to build the desired URL.
String.Format(#"http://example.com{0}", str);
If you want to check to see whether one of the items in that textbox is a fully-formed URL before prepending the string, then use String.StartsWith (doc).
if (!String.StartsWith("http://")) {
// use String.Format
}

Since you're dealing with URIs, you can take advantage of the Uri Class which can resolve relative URIs:
Uri baseUri = new Uri("http://example.com/");
Uri result1 = new Uri(baseUri, "/Category/5");
// result1 == {http://example.com/Category/5}
Uri result2 = new Uri(baseUri, "http://example.org/Category/15/noneedtoadd");
// result2 == {http://example.org/Category/15/noneedtoadd}

The raw regex pattern is ^/ which means that it will match a slash at the beginning of the line.
Regex.Replace (text, #"^/", "http://example.com/")

Dynamic String Format C#

In C#, Windows Form, how would I accomplish this:
07:55 Header Text: This is the data<br/>07:55 Header Text: This is the data<br/>07:55 Header Text: This is the data<br/>
So, as you can see, i have a return string, that can be rather long, but i want to be able to format the data to be something like this:
<b><font color="Red">07:55 Header Text</font></b>: This is the data<br/><b><font color="Red">07:55 Header Text</font></b>: This is the data<br/><b><font color="Red">07:55 Header Text</font></b>: This is the data<br/>
As you can see, i essentially want to prepend <b><font color="Red"> to the front of the header text & time, and append </font></b> right before the : section.
So yeah lol i'm kinda lost.
I have messed around with .Replace() and Regex patterns, but not with much success. I dont really want to REPLACE text, just append/pre-pend at certain positions.
Is there an easy way to do this?
Note: the [] tags are actually <> tags, but i can't use them here lol

Just because you're using RegEx doesn't mean you have to replace text.
The following regular expression:
(\d+:\d+.*?:)(\s.*?\[br/\])
Has two 'capturing groups.' You can then replace the entire text string with the following:
[b][font color="Red"]\1[/font][/b]\2
Which should result in the following output:
[b][font color="Red"]07:55 Header Text:[/font][/b] This is the data[br/]
[b][font color="Red"]07:55 Header Text:[/font][/b] This is the data[br/]
[b][font color="Red"]07:55 Header Text:[/font][/b] This is the data[br/]
Edit: Here's some C# code which demonstrates the above:
var fixMe = #"07:55 Header Text: This is the data[br/]07:55 Header Text: This is the data[br/]07:55 Header Text: This is the data[br/]";
var regex = new Regex(#"(\d+:\d+.*?:)(\s.*?\[br/\])");
var matches = regex.Matches(fixMe);
var prepend = #"[b][font color=""Red""]";
var append = #"[/font][/b]";
string outputString = "";
foreach (Match match in matches)
{
outputString += prepend + match.Groups[1] + append + match.Groups[2] + Environment.NewLine;
}
Console.Out.WriteLine(outputString);

have you tried .Insert() check this.

Have you considered creating a style and setting the css class of each line by wrapping each line in a p or div tag?
Easier to maintain and to construct.

The easiest way probably is to use string.Replace() and string.Split(). Say your input string is input (untested):
var output = string.Join("<br/>", in
.Split("<br/>)
.Select(l => "<b><font color=\"Red\">" + l.Replace(": ", "</font></b>: "))
.ToList()
) + "<br/>";