Develop Reference

UriFormatException shown in console for unity build.How to solve this?

I am running the below code
string URLL = Alldetails[0].Urls[0];
Debug.Log("URL link is = " + URLL);
WWW imgurllinks = new WWW(URLL);
My console Output is shown below
URL link is = "http://testing.com/test/storage//productphotos/HYTh3zUYjQKuHavNSpjQ1xeUq7laeS1WwOKPOkpQ.jpeg"
UriFormatException: URI scheme must start with a letter and must consist of one of alphabet, digits, '+', '-' or '.' character.
But if I give that same link directly and executes code
WWW imgurllinks = new WWW("http://testing.com/test/storage//productphotos/HYTh3zUYjQKuHavNSpjQ1xeUq7laeS1WwOKPOkpQ.jpeg")
From the API I tried by changing the link to "http://testing.com/test/storage/productphotos/HYTh3zUYjQKuHavNSpjQ1xeUq7laeS1WwOKPOkpQ.jpeg" that is removing one slash after storage in the link.
The same error but if I run the link directly than saving in a string it will work.Doesnt make any sense.

How to encode a URL using Asp.net?

I have the following line of aspx link that I would like to encode:
Response.Redirect("countriesAttractions.aspx?=");
I have tried the following method:
Response.Redirect(Encoder.UrlPathEncode("countriesAttractions.aspx?="));
This is another method that I tried:
var encoded = Uri.EscapeUriString("countriesAttractions.aspx?=");
Response.Redirect(encoded);
Both redirects to the page without the URL being encoded:
http://localhost:52595/countriesAttractions?=
I tried this third method:
Response.Redirect(Server.UrlEncode("countriesAttractions.aspx?="));
This time the url itself gets encoded:
http://localhost:52595/countriesAttractions.aspx%3F%3D
However I get an error from the UI saying:
HTTP Error 404.0 Not Found
The resource you are looking for has been removed, had its name changed, or
is temporarily unavailable.
Most likely causes:
-The directory or file specified does not exist on the Web server.
-The URL contains a typographical error.
-A custom filter or module, such as URLScan, restricts access to the file.
Also, I would like to encode another kind of URL that involves parsing of session strings:
Response.Redirect("specificServices.aspx?service=" +
Session["service"].ToString().Trim() + "&price=" +
Session["price"].ToString().Trim()));
The method I tried to include the encoding method into the code above:
Response.Redirect(Server.UrlEncode("specificServices.aspx?service=" +
Session["service"].ToString().Trim() + "&price=" +
Session["price"].ToString().Trim()));
The above encoding method I used displayed the same kind of results I received with my previous Server URL encode methods. I am not sure on how I can encode url the correct way without getting errors.
As well as encoding URL with CommandArgument:
Response.Redirect("specificAttractions.aspx?attraction=" +
e.CommandArgument);
I have tried the following encoding:
Response.Redirect("specificAttractions.aspx?attraction=" +
HttpUtility.HtmlEncode(Convert.ToString(e.CommandArgument)));
But it did not work.
Is there any way that I can encode the url without receiving this kind of error?
I would like the output to be something like my second result but I want to see the page itself and not the error page.
I have tried other methods I found on stackoverflow such as self-coded methods but those did not work either.
I am using AntiXSS class library in this case for the methods I tried, so it would be great if I can get solutions using AntiXSS library.
I need to encode URL as part of my school project so it would be great if I can get solutions. Thank you.

You can use the UrlEncode or UrlPathEncode methods from the HttpUtility class to achieve what you need. See documentation at https://msdn.microsoft.com/en-us/library/system.web.httputility.urlencode(v=vs.110).aspx
It's important to understand however, that you should not need to encode the whole URL string. It's only the parameter values - which may contain arbitrary data and characters which aren't valid in a URL - that you need to encode.
To explain this concept, run the following in a simple .NET console application:
string url = "https://www.google.co.uk/search?q=";
//string url = "http://localhost:52595/specificAttractions.aspx?country=";
string parm = "Bora Bora, French Polynesia";
Console.WriteLine(url + parm);
Console.WriteLine(url + HttpUtility.UrlEncode(parm), System.Text.Encoding.UTF8);
Console.WriteLine(url + HttpUtility.UrlPathEncode(parm), System.Text.Encoding.UTF8);
Console.WriteLine(HttpUtility.UrlEncode(url + parm), System.Text.Encoding.UTF8);
You'll get the following output:
https://www.google.co.uk/search?q=Bora Bora, French Polynesia
https://www.google.co.uk/search?q=Bora+Bora%2c+French+Polynesia
https://www.google.co.uk/search?q=Bora%20Bora,%20French%20Polynesia
https%3a%2f%2fwww.google.co.uk%2fsearch%3fq%3dBora+Bora%2c+French+Polynesia
By pasting these into a browser and trying to use them, you'll soon see what is a valid URL and what is not.
(N.B. when pasting into modern browsers, many of them will URL-encode automatically for you, if your parameter is not valid - so you'll find the first output works too, but if you tried to call it via some C# code for instance, it would fail.)
Working demo: https://dotnetfiddle.net/gqFsdK
You can of course alter the values you input to anything you like. They can be hard-coded strings, or the result of some other code which returns a string (e.g. fetching from the session, or a database, or a UI element, or anywhere else).
N.B. It's also useful to clarify that a valid URL is simply a string in the correct format of a URL. It is not the same as a URL which actually exists. A URL may be valid but not exist if you try to use it, or may be valid and really exist.

Chrome doesn't open url properly using process.start c#

I'm trying to do some work with fakemailgenerator, the url goes well with httpwebrequest and gets printed by MessageBox.Show properly, here is the piece of code with the problem, btw there no errors or exeptions.
//FOR EXAMPLE mail#fakemail.com
string[] mailSplit = mail.Split(new string[] { "#" },
StringSplitOptions.None); // MAKING AN ARRAY TO SPLIT USER
AND DOMAIN
string url = #"http://www.fakemailgenerator.com/#/" +
mailSplit[1] + "/" + mailSplit[0] + "/"; //GENERATING AND SAVING THE FAKE MAIL URL.
MessageBox.Show(url); //THIS PRINTS http://www.fakemailgenerator.com/#/fakemail.com/mail
Process.Start("chrome", url); //THIS GOES TO http://www.fakemailgenerator.com/#/fakemail.com
EDIT
This have nothing to do with fakemailgenerator.com, because as mentioned above i tried that with httpwebrequest, plus in the loading state it's just http://www.fakemailgenerator.com/#/fakemail.com and not the full url.
EDIT
I tried rightnow putting the url manually and it went good and have been opened in chrome successfully, and i have observed one problem with the url when printed with MessageBox.Show (while using variables, not setting url manually), is showing url like http://www.fakemailgenerator.com/#/domain.com /userwith a whitespace between .com and /user, so i've tried replacing the white space with \0 (null) using url.Replace(' ','\0'), but this failed, so i think maybe there is a way to remove the white space?

Ran the code and it worked fine. A new Chrome window opened with the correct (full) url. It's an error page for me though, but if the site really exists when you try to reach it, perhaps there is some kind of a redirect that redirects you to a site with the shorter url.

I've figured around the problem, i don't really know where it's coming from, but all i know is that a whitespace was being added to the url in a way that makes process.Start("chrome",url); receives only the part before the whitespace; http://www.fakemailgenerator.com/#/domain.com/ , so i've just removed the whitespace with url = url.Replace(" ",string.Empty); and now the code works just fine.

C# Json not handling accents correctly [duplicate]

The following code:
var text = (new WebClient()).DownloadString("http://export.arxiv.org/api/query?search_query=au:Freidel_L*&start=0&max_results=20"));
results in a variable text that contains, among many other things, the string
"$κ$-Minkowski space, scalar field, and the issue of Lorentz invariance"
However, when I visit that URL in Firefox, I get
$κ$-Minkowski space, scalar field, and the issue of Lorentz invariance
which is actually correct. I also tried
var data = (new WebClient()).DownloadData("http://export.arxiv.org/api/query?search_query=au:Freidel_L*&start=0&max_results=20");
var text = System.Text.UTF8Encoding.Default.GetString(data);
but this gave the same problem.
I'm not sure where the fault lies here. Is the feed lying about being UTF8-encoded, and the browser is smart enough to figure that out, but not WebClient? Is the feed properly UTF8-encoded, but WebClient is failing in some other way? What can I do to mitigate this?

It's not lying. You should set the webclient's encoding first before calling DownloadString.
using(WebClient webClient = new WebClient())
{
webClient.Encoding = Encoding.UTF8;
string s = webClient.DownloadString("http://export.arxiv.org/api/query?search_query=au:Freidel_L*&start=0&max_results=20");
}
As for why your alternative isn't working, it's because the usage is incorrect. Its should be:
System.Text.Encoding.UTF8.GetString()

WebClient.DownloadFile - Invalid URI: The hostname could not be parsed

So I tried this in several different formats and produced different results. I will include all relevant information below.
My company uses a web-based application to schedule the generation of reports. The service emails a URL that can be clicked on and will immediately begin the "Open Save As Cancel" dialogue box. I am trying to automate the process of downloading these reports with a C# script as part of a Visual Studio project (the end goal is to import these reports in SQL Server).
I am encountering terrible difficulty initiating the download of this file using WebClient Here is the closest I have gotten with any of the methods I have tried:
*NOTE: I removed all identifying information from the URL, but left all special characters and the basic architecture intact. Hopefully this will be a happy medium between protecting confidential info and giving you enough to understand my dilemma. The URL does work when manually copied and pasted into the address bar of internet explorer.
Error Message:
"Invalid URI: The hostname could not be parsed."
public void Main()
{
using (var wc = new System.Net.WebClient())
{
wc.DownloadFile(
new Uri(#"http:\\webapp.locality.company.com\scripts\rds\cgigetf.exe?job_id=3058352&file_id=1&format=TAB\report.tab"),
#"\\server\directory\folder1\folder2\folder3\...\...\...\rawfile.tab");
}
}
Note also that I have tried to set:
string sourceUri = #"http:\\webapp.locality.company.com\scripts\rds\cgigetf.exe?job_id=3058352&file_id=1&format=TAB\report.tab\abc123_3058352.tab";
Uri uriPath;
Uri.TryCreate(sourceUri, UriKind.Absolute, out uriPath);
But uriPath remains null - TryCreate fails.
I have attempted doing a webrequest / webresponse / WebStream, but it still cannot find the host.
I have tried including the download URL (as in my first code example) and the download URL + the file name (as in my second code example). I do not need the file name in the URL to initiate the download if I do it manually. I have also tried replacing the "report.tab" portion of the URL with the file name, but to no avail.
Help is greatly appreciated as I have simply run out of thoughts on this one. The only idea I have left is that perhaps one of the special characters in my URL is getting in the way, but I don't know which one that would be or how to handle it properly.
Thanks in advance!

My first thought would be that your URI backslashes are being interpreted as escape characters, leading to a nonsense result after evaluation. I would try a quick test where each backslash is escaped as itself (i.e. "\" instead of "\" in each instance). I'm also a little puzzled as to why your URI is not using forward slashes...?
// Create an absolute Uri from a string.
Uri absoluteUri = new Uri("http://www.contoso.com/");
Ref: Uri Constructor on MSDN