I have a page that I wish to pass an ID in a querystring to another page
eg
Response.Redirect("~/Account/Login.aspx?CertificateID="+ CertificateTextBox.Text);
but the value in the CertificateTextBox is in the format of Encoding.UTF8
so it can contains character like "ZnbiS69F2g22OeupHw+Xlg=="
When the receiving page gets the QueryString
CertificateTextBox.Text = Request.QueryString["CertificateID"];
the "+" and possible other querystring chars like "?" are stripped!!
so I end up with
Request.QueryString["CertificateID"];
returning
"ZnbiS69F2g22OeupHw Xlg=="
the "+" strinpped!
Is there a way to encode these chars so they are not striped by QuesryString()
or do I have to use a session variable??
You need to encode it for URL formatting for example using HttpServerUtility.UrlEncode(), ex:
var encodedCertID = Server.UrlEncode(CertificateTextBox.Text);
Response.Redirect("~/Account/Login.aspx?CertificateID="+ encodedCertID);
Related
So I am going off memory here because I cannot see the code I am trying to figure this out for at the moment, but I am working with some old VB Script code where there is a data connection that is set like this:
set objCommand = Server.CreateObject("ADODB.command")
and I have a field from the database that is being stored in a variable like this:
Items = RsData(“Item”).
This specific field in the database is a long string of
text:
(i.e. “This is part of a string of text…Header One: Here is text after header one… Header Two: Here is more text after header two”).
There are certain parts of the text that I wish to store as a variable that are between two index positions in the long string of text within that field. They are separated by headers that are stored in the text field above like this: “Header One:” and “Header Two:”, and I want to capture all text that occurs in between those two headers of text and store them into their own variable (i.e. “Here is text after header one…”).
How do I achieve this? I have tried to use the InStr method to set the index but from how I understand how this works it will only count the beginning of where a specific part of the string occurs. Am I wrong in my thinking of this? Since that is the case, I am also having trouble getting the Mid function to work. Can some one please show me an example of how this is supposed to work? Remember, I am only going off of memory so please forgive me that I am unable to provide better code examples now. I hope my question makes sense!
I am hopeful that someone can help me with an answer tonight so I can try this out tomorrow when I am near the code again! Thank you for your efforts and any help offered!
You can extract all the substrings starting with the text Header and ending just before either the next Header or end-of-string. I have used regular expression to implement that and it is working for me. Have a look at the code below. If I get a simpler(non-regex solution), I will update the answer.
Code:
strTest = "Header One: Some random text Header Two: Some more text Header One: Some random textwerwerwefvxcf234234 Header Three: Some more t2345fsdfext Header Four: Some randsdfsdf3w42343om text Header Five: Some more text 123213"
set objReg = new Regexp
objReg.Global = true
objReg.IgnoreCase = false
objReg.pattern = "Header[^:]+:([\s\S]*?)(?=Header|$)" '<---Regex Pattern. Explained later.
set objMatches = objReg.Execute(strTest)
Dim arrHeaderValues() '<-----This array contains all the required values
i=-1
for each objMatch in objMatches
i = i+1
Redim Preserve arrHeaderValues(i)
arrHeaderValues(i) = objMatch.subMatches.item(0) '<---item(0) indicates the 1st group of each match
next
'Displaying the array values
for i=0 to ubound(arrHeaderValues)
msgbox arrHeaderValues(i)
next
set objReg = Nothing
Regex Explanation:
Header - matches Header literally
[^:]+: - matches 1+ occurrences of any character that is not a :. This is then followed by matching a :. So far, keeping the above 2 points in mind, we have matched strings like Header One:, Header Two:, Header blabla123: etc. Now, whatever comes after this match is relevant to us. So we will capture that inside a Group as shown in the next breakup.
([\s\S]*?)(?=Header|$) - matches and captures everything(including newlines) until either the next Header or the end-of-the-string(represented by $)
([\s\S]*?) - matches 0+ occurrences of any character and capture the whole match in Group 1
(?=Header|$) - match and capture the above thing until another instance of the string Header or end of the string
Click for Regex Demo
Alternative Solution(non-regex):
strTest = "Header One: Some random text Header Two: Some more text Header One: Some random textwerwerwefvxcf234234 Header Three: Some more t2345fsdfext Header Four: Some randsdfsdf3w42343om text Header Five: Some more text 123213"
arrTemp = split(strTest,"Header") 'Split using the text Header
j=-1
Dim arrHeaderValues()
for i=0 to ubound(arrTemp)
strTemp = arrTemp(i)
intTemp = instr(1,strTemp,":") 'Find the position of : in each array value
if(intTemp>0) then
j = j+1
Redim preserve arrHeaderValues(j)
arrHeaderValues(j) = mid(strTemp,intTemp+1) 'Store the desired value in array
end if
next
'Displaying the array values
for i=0 to ubound(arrHeaderValues)
msgbox arrHeaderValues(i)
next
If you don't want to store the values in an array, you can use Execute statement to create variables with different names during run-time and store the values in them. See this and this for reference.
I have the following page querystring:
register.aspx?id="jSmith"
I have the following code to retrieve the value of ID
string qString = string.IsNullOrEmpty(Request.QueryString["id"]) ? string.Empty : HttpUtility.UrlDecode(Request.QueryString["id"]);
When I view the value of qString I get something like
"\"jSmith\""
so when I do the following:
if (qString == "jSmith")
{
........
}
it does not not execute the if condition. What do I need to do s that it does not have the quotes.
The code is correct.
The problem is that you are passing to the page "jSmith" with the double quotes as part of the string.
Try invoke the page this way
register.aspx?id=jSmith
That is because the correct way to give the path in this case would be register.aspx?id=jSmith, without the quotes. If you need spaces, or other special characters, in your ID, these should be URL encoded (and will be decoded by your code), but not enclosed in quotes.
For example, if your id was the string john smith, the URL would become register.aspx?id=john+smith, since + is the URL encoding of a space.
You don't need to put quotes around values in querystring, by definition they're all strings...
Your querystring should look like :
register.aspx?id=jSmith
You do not need the quotation marks in your querystring.
It should read
register.aspx?id=jSmith
You should look for
if (qString == "\"jSmith\"")
the \ is escaping the extra "
or you could perform a replace to remove the extra "
use
Response.Redirect("Qstring.aspx?name= smith");
and on the page Qstring.aspx load event
string s=Request.QueryString["name"].ToString();
gives u "smith" in s variable
I have a string that at any point may or may not contain one or more / characters. I'd like to be able to create a new string based on this string. The new string would include every character after the very last / in the original string.
Sounds like you're wanting the file name from a URL. In any case, it's the same function. The key is using the InStrRev function to find the first / char, but starting from the right. Here's the function:
Function GetFilename(URL)
Dim I
I = InStrRev(URL, "/")
If I > 0 Then
GetFilename = Mid(URL, I + 1)
Else
GetFilename = URL
End If
End Function
Split it up into parts and get the last part:
a = split("my/string/thing", "/")
wscript.echo a(ubound(a))
note: Not safe when the string is empty.
I am passing '© Alt+ 0169' in my serach fields in query string.
When i am getting QueryString in page like Request.QueryString("SearchVal") then value will be : '© Alt 0169' .
It reomove '+'.
Could u tell me how can i get it..
Thanks
Pankaj Pareek
Use System.Web.HttpUtility.UrlEncode() method.
string encode = HttpUtility.UrlEncode("© Alt+ 0169");
Response.Redirect("Page1.aspx?searchVal=" + encode);
The URL link below will open a new Google mail window. The problem I have is that Google replaces all the plus (+) signs in the email body with blank space. It looks like it only happens with the + sign. How can I remedy this? (I am working on a ASP.NET web page.)
https://mail.google.com/mail?view=cm&tf=0&to=someemail#somedomain.com&su=some subject&body=Hi there+Hello there
(In the body email, "Hi there+Hello there" will show up as "Hi there Hello there")
The + character has a special meaning in [the query segment of] a URL => it means whitespace: . If you want to use the literal + sign there, you need to URL encode it to %2b:
body=Hi+there%2bHello+there
Here's an example of how you could properly generate URLs in .NET:
var uriBuilder = new UriBuilder("https://mail.google.com/mail");
var values = HttpUtility.ParseQueryString(string.Empty);
values["view"] = "cm";
values["tf"] = "0";
values["to"] = "someemail#somedomain.com";
values["su"] = "some subject";
values["body"] = "Hi there+Hello there";
uriBuilder.Query = values.ToString();
Console.WriteLine(uriBuilder.ToString());
The result:
https://mail.google.com:443/mail?view=cm&tf=0&to=someemail%40somedomain.com&su=some+subject&body=Hi+there%2bHello+there
If you want a plus + symbol in the body you have to encode it as 2B.
For example:
Try this
In order to encode a + value using JavaScript, you can use the encodeURIComponent function.
Example:
var url = "+11";
var encoded_url = encodeURIComponent(url);
console.log(encoded_url)
It's safer to always percent-encode all characters except those defined as "unreserved" in RFC-3986.
unreserved = ALPHA / DIGIT / "-" / "." / "_" / "~"
So, percent-encode the plus character and other special characters.
The problem that you are having with pluses is because, according to RFC-1866 (HTML 2.0 specification), paragraph 8.2.1. subparagraph 1., "The form field names and values are escaped: space characters are replaced by `+', and then reserved characters are escaped"). This way of encoding form data is also given in later HTML specifications, look for relevant paragraphs about application/x-www-form-urlencoded.
Just to add this to the list:
Uri.EscapeUriString("Hi there+Hello there") // Hi%20there+Hello%20there
Uri.EscapeDataString("Hi there+Hello there") // Hi%20there%2BHello%20there
See https://stackoverflow.com/a/34189188/98491
Usually you want to use EscapeDataString which does it right.
Generally if you use .NET API's - new Uri("someproto:with+plus").LocalPath or AbsolutePath will keep plus character in URL. (Same "someproto:with+plus" string)
but Uri.EscapeDataString("with+plus") will escape plus character and will produce "with%2Bplus".
Just to be consistent I would recommend to always escape plus character to "%2B" and use it everywhere - then no need to guess who thinks and what about your plus character.
I'm not sure why from escaped character '+' decoding would produce space character ' ' - but apparently it's the issue with some of components.