Is there something I am missing to pre-check a string for a certain number of instances of a substring? Example.
"I am a test string, I will be searching this string later. I will be checking for every instance of the letter "i" and return the number of instances of that letter."
If I wanted to return an int for how many times i occurs in that string.
I am going to have a series of numbers, I want to count how many times each unique number exists in the results.For example if I have this string" "1, 2, 3, 5, 3, 7, 1" I want to know the number 1 appears 2 times, the number 2 appears 1 time, the number 3 appears 2 times, the number 5 appears 1 time, and the number 7 appears 1 time.I want to load this up into a datagrid each unique number will be stored in a column named acct the number of times the number appeared in the string will be stored in a column named numref?
View 3 RepliesI'm trying to create a valid RegEx replacement pattern for correctly formatting specific .XML file names. Specifically, if a file name does not begin with a prefix, let's say, ACE_. If the XML file name and extension does not begin with ACE_, prepend the string ACE_ to the file name.For example, if my input source string is the following:
Widgets.xml
I would like to execute a single RegEx Replacement that would result in the string being:
ACE_Widgets.xml.
Conversely, if the string already begins with ACE_, I would like it to remain unchanged. Also,how can I include the pattern ".xml" to ensure that the string pattern for the file name and extension ends with ".xml" in the same matching pattern for the RegEx Replacement pattern? As for the match, I have some luck with the following:
^ACE_{1}[dD]+
Which indicates there is a match for the pattern if the input string is ACE_Widgets.xml and no match if the string is Widgets.xml
The RegEx pattern would suffice, but if you need to know the language in which I'd like to use the replacement pattern is in .NET 4.0 in either C# or VB.NET.
The following posting is close to what Im looking for, but with the inclusion of the *ix directory path prefix, and the use of preg_replace() in PHP, I'm having a bit of a struggle getting it to work with what I need to do:
Regular Expression: How to replace a string that does NOT start with something?
I'm reading data in from a comma-separated text file and storing the data in an array for later use. Some of the values are to remain as strings, and I need to convert some to integers, for which I was trying to use, for example, integer.parse(ar(0)).
My problem is that the string values are randomly distributed through the text file, so I need to be able to test whether the string can be converted at all before doing the conversion.
How do you check to see if a string is a numberic value?
View 7 RepliesI want to user to enter only numbers and characters in textbox i.e no special charaters.I don't want to use key press event of textbox.As i need same validation in gridview.
So i want to validate whole string.
I made a simple "restarter" app... However, I need to close multiple instances of an application. For example, if I have three windows of paint, or three windows of Word open, how do I check if it is still open before I open a new instance?
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I'm writing some code that takes a report from the mainframe and converts it to a spreadsheet. They can't edit the code on the MF to give me a delimited file, so I'm stuck dealing with it as fixed width. It's working okay now, but I need to get it more stable before I release it for testing. My problem is that in any given line of data, say it could have three columns of numbers, each five chars wide at positions 10, 16, and 22. If on this one particular row, there's no data for the last two cols, it won't be padded with spaces; rather, the length of the string will be only 14. So, I can't just blindly have
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This is a tricky situation. I want to extract a certain substring from the strings given below, using VB 6.0. I process each string (row) in a for loop one by one.
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got a string "Douglas". how do i extract a substring from the given string? how do i add a character or string in the middle of the word?
View 2 RepliesDim strValue as String=""
Dim strOutputValue as String=""
strValue ="One"
strOutputValue = "One+(7 Spaces here) "
strValue is changing dynamically that is fixed 10 characters. but i need Out is
MsgBox("Total characters " &strOutputValue.Length)
How will I select a substring with 2 criteria? I have a Richtextbox where I select a number after a : with this code; For Each line As String In Richtextbox1.Lines Dim equalsPos As Integer = line.IndexOf(":") + 1 txtFound.AppendText(line.Substring(equalsPos, line.Length - equalsPos)) Next This is working ok, but the whole line.length is appended for number2. The line ex. Some text:my number some text-my number2. I want my number appended to txtFound, and my number2 appended to txtFound2. With my code only number2 can be appended correct.
View 4 Repliesfrom the Help in VS 2008: Replace: Returns a string in which a specified substring has been replaced with another substring a specified number of times.
Expression
Required. String expression containing substring to replace.
Find
Required. Substring being searched for.
Replacement
Required. Replacement substring.
Start
Optional. Position within Expression where substring search is to begin. If omitted, 1 is assumed.Count Optional. Number of substring substitutions to perform. If omitted, the default value is 1, which means "make all possible substitutions."
Compare Optional. Numeric value indicating the kind of comparison to use when evaluating substrings. See Settings for values.
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I wan't a method with which to find a string within another string. It should return the position of the first occurrence of the substring. (In VB 2008 !)
View 2 Repliesi am retrieving a iMAGE Extension variable string. for example: test.case-function.two.jpg and want to return the end '.JPG' portion only. so i can add to another variable value. Note the .JPG substring could be other Extension types such as PJPEG ect
View 1 RepliesBasically I want to retrieve all possible substring matches with n characters from a string, Here's my initial code but it only returns 2 matches.[code]...
View 3 RepliesI've got some code that creates a list of AD groups that the user is a member of, with the intention of saying 'if user is a member of GroupX then allow admin access, if not allow basic access'.
I was using a StringCollection to store this list of Groups, and intended to use the Contains method to test for membership of my admin group, but the problem is that this method only compares the full string - but my AD groups values are formatted as cn=GroupX, etc....
I want to be easily able to determine if a particular substring (i.e. 'GroupX') appears in the list of groups. I could always iterate through the groups check each for a substring representing my AD group name, but I'm more interested in finding out if there is a 'better' way.
Clearly there are a number of repositories for the list of Groups, and it appears that Generics (List(Of String)) are more commonly preferred (which I may well implement anyway) but there is no in-built means of checking for a substring using this method either.
I've settled on using a List(Of), and I've borrowed from Dan's code to iterate through the list.
How do I make a regular expression to find a substring within a string that looks like: |sdrt446-7fdfs23| ? The number of characters and types change. So I need whatever in within the | |.
View 3 RepliesI need to create a code that searches an array of movie titles. When the user enters a specific string, the first movie title that contains that string is displayed. For example, entering "he" would display Sherlock Holmes as opposed to the Blind Side. I don't know how to create a code that reads a string that the user enters.[code]...
View 2 RepliesI'm creating a file thats need to be in this format url... I need to be able to set the limit of the string length for certain fields.Is there an easy way to set the limit of the field so that if the string was larger then the limit then just take the substring and if smaller would add extra spaces?I was able to accomplish something similar to this with integers by just using .toString("00000").
View 3 RepliesI am trying to filter a dataset using a number different inputs, selected by a number of check boxes. I have all the text base rowfilters working, but I can not make the date filter work unless I hard code the datetime into the code. The database is MS Access and I am using VB2008 to show the data. I would like to be able to use a DateTimePicker to set the filter date (without the time part) Also I would need to remove the time section of the datEnterDate. I cannot change the structure of the database fields. Also the datEnterDate is MM/dd/yyyy, because I'm in England I would like to use the format of dd/MM/yyyy if possible
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I am trying to make a basic ATM system, iv got all the interface done and I have made the link to my SQL database etc. the part i'm stuck on is how I can run a check to see if a bank card number matches up to the users PIN number. To simulate the user putting a card into the machine I've used a combo box, and that lists all the cards, that haven't been flagged as confiscated (there's a column in my ATMCards table that I can set to true or false) then after the user has selected a relevant card there's another text box where they can enter in their PIN number.
Now what I want to do is, if they chose the card number 1234567890123456 in the combo box and they enter in the PIN 1234 into the text box, then, after clicking the check PIN Button if the pin is correct they need to be taken to another from where they can check their balance etc., and if its wrong they got three attempts after which point i want to flag that card as confiscated.
I got 2 LABELS and ONE BUTTON... when i press the button, it fills both labels with a random number from 1 - 6.ild like to do it like this... you press the button then a little prograss bar starts running for 3 or 4 seconds... and THEN after it reached the bars max i want it to show the numbers in the Labels...
the second thing is...i want to make 2 checkboxes next to the labels... if you mark the first checkbox, next to the first label... and the outcome is that the number of the first label is BIGGER then the other one.. you should get some kind of a msgbox.. i know how to make a msg box... but i dont know the code for vb to check if label1 is > or < than label2....
I would like to use nested tokens, a similar question was asked in this thread [URL While this did address how to do it with a single instance, I was wondering how to do it with multiple instances in a string. ie.
input to textbox1
"I {love|like} {blue|red|orange|pink} its my {favorite|worst} color "
Press a button and would output a random word in the brackets to textbox2/msgbox similar to. "I like red its my favorite color" or "I love pink its my worst color"
I know there is a function Contains that returns true if string has a certain substing in it. But is there a function that returns the count of instances of that substring inside another string.
View 6 RepliesIs there a way to check if a number in a TextBox is an even or uneven number?
View 8 RepliesPart of my assignment is to check if input to Group Number and Number of Units are correct input by making error handling exceptions...
I have to check the following:
a) group number is neither 501 nor 062
b) number of units are NOT numbers
c) number of units is NOT a positive number
So my first question is, am I checking correctly? 2nd question is, How do I make sure my Exceptions will pertain to their correct respective things (a, b, and c.. above)?
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Is there an easy way to check whether a number is a prime number? I've tried doing this:[code] url...
View 3 RepliesIs there an easy way to check whether a number is a prime number? I've tried doing this:
Code:
Public Function IsPrime(ByVal Input As Integer)
Dim NewInput As Integer
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this is not working?
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End WhileI am trying to read from the ": " to the end of the line. I keep getting this error: Index and length must refer to a location within the string. Parameter name: length