I have one label field max characters allowed is 200. If the string in the label goes above 30 means, I need to trim the value and display the trimmed value.
If I go for editing means, all the 200 characters should be passed in the text box for edit.
label.Text = label.Text.Substring(0, 30) + "..."; //This is displayed in the label
After that i want to edit, for that i need to recover the full string(200 char) in the label, is it possible?
TRIM function
Trim eliminates leading and trailing whitespace. We need to remove whitespace from the beginning or ending of a string. We use the .NET Framework's Trim method to do this efficiently. This method removes any characters specified.
Trim input and output
String input: " This is an example string. "<br>
Trim method result: "This is an example string."
String input: "This is an example string.\r\n\r\n"<br>
Trim method result: "This is an example string."
So it's depend upon your label strings
Related
PurchPackingSlipJournalCreate class -> initHeader method have a line;
vendPackingSlipJour.PackingSlipId = purchParmTable.Num;
but i want when i copy and paste ' FDG 2020 ' (all blanks are tab character) in Num area and click okey, write this value as 'FDG2020' in the PackagingSlipId field of the vendPackingSlipJour table.
I tried -> vendPackingSlipJour.PackingSlipId = strRem(purchParmTable.Num, " ");
but doesn't work for tab character.
How can i remove all whitespace characters from string?
Version 1
Try the strAlpha() function.
From the documentation:
Copies only the alphanumeric characters from a string.
Version 2
Because version 1 also deletes allowed hyphens (-), you could use strKeep().
From the documentation:
Builds a string by using only the characters from the first input string that the second input string specifies should be kept.
This will require you to specify all desired characters, a rather long list...
Version 3
Use regular expressions to replace any unwanted characters (defined as "not a wanted character"). This is similar to version 2, but the list of allowed characters can be expressed a lot shorter.
The example below allows alphanumeric characters(a-z,A-Z,0-9), underscores (_) and hyphens (-). The final value for newText is ABC-12_3.
str badCharacters = #"[^a-zA-Z0-9_-]"; // so NOT an allowed character
str newText = System.Text.RegularExpressions.Regex::Replace(' ABC-12_3 ', badCharacters, '');
Version 4
If you know the only unwanted characters are tabs ('\t'), then you can go hunting for those specifically as well.
vendPackingSlipJour.PackingSlipId = strRem(purchParmTable.Num, '\t');
Everytime I add CharW(34) to a string it adds two "" symbols
Example:
text = "Hello," + Char(34) + "World" + Char(34)
Result of text
"Hello,""World"""
How can I just add one " symbol?
e.g Ideal result would be:
"Hello,"World""
I have also tried:
text = "Hello,""World"""
But I still get the double " Symbols
Furthermore. Adding a CharW(39), which is a ' symbol only produces one?
e.g
text = "Hello," + Char(39) + "World" + Char(39)
Result
"Hello,'World'"
Why is this only behaving abnormally for double quotes? and how can I add just ONE rather than two?
Assuming you meant the old Chr function rather than Char (which is a type).It does not add two quotation mark characters. It only adds one. If you output the string to the screen or a file, you would see that it only adds one. The Visual Studio debugger, however, displays the VB-string-literal representation of the value rather than the raw string value itself. Since the way to escape a double-quote character in a string is to put two in a row, that's the way it displays it. For instance, your code:
text = "Hello," + Chr(34) + "World" + Chr(34)
Can also be written more simply as:
text = "Hello,""World"""
So, the debugger is just displaying it in that VB syntax, just as in C#, the debugger would display the value as "Hello, \"World\"".
The text doesn't really have double quotes in it. The debugger is quoting the text so that it appears as it would in your source code. If you were to do this same thing in C#, embedded new lines are displayed using it's source code formatting.
Instead of using the debugger's output, you can add a statement in your source to display the value in the debug window.
Diagnostics.Debug.WriteLine(text)
This should only show the single set of quotes.
Well it's Very eazy
just use this : ControlChars.Quote
"Hello, " & ControlChars.Quote & "World" & ControlChars.Quote
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'm using a linq query where i do something liike this:
viewModel.REGISTRATIONGRPS = (From a In db.TABLEA
Select New SubViewModel With {
.SOMEVALUE1 = a.SOMEVALUE1,
...
...
.SOMEVALUE2 = If(commaseparatedstring.Contains(a.SOMEVALUE1), True, False)
}).ToList()
Now my Problem is that this does'n search for words but for substrings so for example:
commaseparatedstring = "EWM,KI,KP"
SOMEVALUE1 = "EW"
It returns true because it's contained in EWM?
What i would need is to find words (not containing substrings) in the comma separated string!
Option 1: Regular Expressions
Regex.IsMatch(commaseparatedstring, #"\b" + Regex.Escape(a.SOMEVALUE1) + #"\b")
The \b parts are called "word boundaries" and tell the regex engine that you are looking for a "full word". The Regex.Escape(...) ensures that the regex engine will not try to interpret "special characters" in the text you are trying to match. For example, if you are trying to match "one+two", the Regex.Escape method will return "one\+two".
Also, be sure to include the System.Text.RegularExpressions at the top of your code file.
See Regex.IsMatch Method (String, String) on MSDN for more information.
Option 2: Split the String
You could also try splitting the string which would be a bit simpler, though probably less efficient.
commaseparatedstring.Split(new Char[] { ',' }).Contains( a.SOMEVALUE1 )
what about:
- separating the commaseparatedstring by comma
- calling equals() on each substring instead of contains() on whole thing?
.SOMEVALUE2 = If(commaseparatedstring.Split(',').Contains(a.SOMEVALUE1), True, False)
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.