Reverentjim kindly gave me this code the other day that worked well. There are two more things i am trying to do but cant get my head around it.
1) I want to be able to extract the text after the second and before the period e.g. profile
2) if exists, I want to change the text to lower after the period
i am trying to test if the characters in a string is a valid MAC Address
but my code
dim getMAC as string = "22:13:35:67:49:ab"
If Regex.IsMatch(getMAC, "/^([0-9a-fA-F]{2}:){5}[0-9a-fA-F]{2}$") = True Then
messagebox.show("is valid")
[Code].....
I don't understand the error, Argument not specified for parameter 'test' of 'Public Shared Function TestThis(test As String)'.
Partial Public Class Form1
Shared Sub ReceiveCallback(ByVal ar As IAsyncResult)
Form1.Invoke(TestThis, New Object(){"test"}) 'error
[code].....
I have a string of characters, but I would like to have a string of hexdecimal characters where the hexadecimal characters are converted by turning the original characters into integers and then those integers into hexadecimal characters. How do I do that?
View 3 Repliesi have been trying to remove special characters. i am not able to remove many crlf in middile of the string.
View 3 RepliesI need to create a console program that allows you to enter a string, of which is then outputted in reverse.
Sample:
Input: Diewas
Output: saweiD
Apparently I need to find out about strings and will also need to use a loop.
On my windows form i have textbox where the user will be entering XML data. What i want to be able to achieve is to search for a field called DESCRIPTION= and check that the text included contains certain characters?How can i get the tool to first find the DESCRIPTION= and test the characters contained with the " (quote marks)?
For example:
DESCRIPTION="hello & welcome"
I want my tool to look for certain characters like < > and & and when it finds one to have a error msg pop up and inform the user that the character will then be escaped for it's HTML entity, i.e & becomes &?
Not sure if too many people know this, but the following line will cause an error:
GroupName.Substring(0, 3) = "jt_"
....if the length of GroupName is less than 3 characters. I always thought it would simply return whatever characters in GroupName, but no, it errors. I must be thinking of the old VB6 days.So, I now have to change the code to:
If (GroupName.Length > 2) Then
If (GroupName.Substring(0, 3) = "jt_") Then
Note that the two comparisons need to be on separate lines. If they are on the same line, such as:
If (GroupName.Length > 2) and (GroupName.Substring(0, 3) = "jt_") Then then the code will still fail as the length command is executed at the same time as the substring command- which will cause the error when the GroupName length is less than 3.Just thought that those of us not aware of this should be!
dp.SyntaxHighlighter.ClipboardSwf = '/dp.SyntaxHighlighter/Scripts/clipboard.swf'
dp.SyntaxHighlighter.HighlightAll('9844f9bfb55449e6a786fa62aaadfa20')
dp.SyntaxHighlighter.HighlightAll('f6d554fd98464bdba9159b319e51b381')
dp.SyntaxHighlighter.HighlightAll('93bf4ca63ad8447abdf084d8a9991e15')
I have written a program that uses an array of the english alphabet and Morse code. I also built a form with a input box for the alphabetic information and an output box with the Morse Code. What i am trying to do is basically type a word like "Hi" in the input box and produce the Morse Code equivalent in the Morse Code output box. [Code] This works but only one letter at a time. Do i need to Parse the string of characters one at a time, and then run it through a loop like i have created?
View 6 RepliesI am building an application to update a database.I have a Map table where row 0 holds the target table field name Row 1 holds an update value or Source table Column name Row 2 holds a Where condition eg
Map: CustNo CustName Val1 Val2
Update: 25
Where: =[CustNo] > [Fld14]
In this example I am going to update the Target Table Field 'Val1' to 25 where the Target Table Rows have Field 'Val1' data > 14 AND Target Table Field 'CustNo' = the Source Table Field 'CustNo' AND the Target Table Field 'Val1' > the Source Table Field 'Fld14' Where I am stuck is I at the moment is wondering how I should convert the strings into test conditions as I iterate the Target Table eg Say my test string is stTest and it holds " = 25" For each dr as datarow in dtTarget
some code
... stFld = "Val1"
if dr(stFld) { convert stTest into literal '=' and then 25}
... do something the only way I can think is to build up a series of test cases like:
Select stOp
Case stOp = "="
Case stOp = "<>"
etc.
I'm looking for some code in .net to allow me to test an xml file to determine if it is well-formed. I am not validating the file against a schema at this point in my code, just testing that it conforms to xml specification for being well formed.
View 1 RepliesFunction to test first char of string
View 9 RepliesIn a Select Case statement is there a way to test if an expression contains a part of a string? Something like this:
Select Case myString
Case "*abc*" 'any string that contains "abc" falls here
Case "*def*" 'etc
End Select
I have a string like 0010000.abc. Is it possible to print just the first 3 characters of the string i.e 001?ajaind
View 1 RepliesI have two tables, dt & dtResults.dt contains 3 columns named: vchInstrumentAnalyteID, bintAnalyteCodeID, & vchAnalyteCode dtResults contains several columns including the columns in dt
I want to get vchInstrumentAnalyteID from the first row in dt and test if it exists in the vchInstrumentAnalyteID column in dtResults. If it exists, I want to use that value from dt to filter rows in dtResults and fill all the filtered rows with data from that row in dt. Then loop to the next row in dt.
I have this code, which is close to what I need, but I can't get it working.
' put analyte data in results table
For Each drA As DataRow In dt.Rows
If
[Code]....
I want to test whether the connection string is valid or not?What should I do ?
View 18 RepliesI need to test a string of text that needs to contain a certain type of char values. The known is allowing of a-z,A-Z,0-9. But the variable (which will be coming from a database field) will be the allowed symbols. The allowed symbols will look something like:!@#$%^&*()
So using regex, how can I check a string of text to make sure it ONLY contains a-z,A-Z,0-9 AND the allowed symbols as shown above? Remember, the allowed symbols is dynamic at run time so I need to somehow be able to plug that in to the method at run time.
The following examples would be valid using the above symbol string:
Test1234%
Test1234
The following example would NOT be valid:Test1234%_
I.E. replace "http:adf.ly/random"to "adf DOT ly /random"..Removes http: and changes . to DOT and adds spaces.
View 3 RepliesI am trying to manipulate a string to get to a part of the string inside 2 specified characters. Getting anything inside the > and the space. string starting with: jk;fhdididlsls/"f>Dog (467838) fgdad
I am trying to get "Dog" out of this.
dim x as string
dim y as string
x="jk;fhdididlsls/"f>Dog (467838) fgdad"
y = x.Split(">" , " ")
MsgBox(y.Join(""))
It will somehow always error out: value of 1-dimension array of string cannot be converted to string
I've set up a test database to begin unit-testing an app that I've recently been added to. It is a 3-tier design (presentation layer, BOL and DAL) and this is my first time writing unit tests. I've decided to start at the BOL and I figure the best way is to swap out the ConnectionString (which has been passed along as a Shared String) with one that points to my new test database. However, I don't wish to change any production code. I simply wish to somehow redirect the app to the test database during unit tests.
View 4 RepliesI have a barcode that once scanned returns a string 8 characters long.
Further along the program I have this line of [code]...
I want to be able to get the first x characters of a string
View 2 RepliesI have a string like this:
1a2b3c4d5e6f7g8h
And I need to rearrange it as follow:
a1b2c3d4e5f6g7h8
Do you understand what I mean? For each two characters, the numerical character swapping place with the following letter, i.e. from 1a change it to a1.how to rearrange the numerical characters and letters in the string? My string always has the said pattern, i.e. one integer then followed by a letter then followed by a integer then followed by a letter and so on.
How can I add space after every 4 characters to string that returned from a function? I know the returned value it is 8 or 12 or ...etc.
for example function myString will return the value of ABCDEF12XY1Z
How can i display in textbox1 as ABCD EF12 XY1Z
I have a string value (which is a hex value) that is displayed as so...F8 30 00 3D FC 13 F8 30 00 01 31 73 34 FE 34 DE F8 30 00 3D FC 13 F8 30 00 01 31 73 34 FE 34 DE F8 30 00 3D FC 13 F8 30 00 01 31 73 34 FE 34 DEThis continues on in this exact pattern. What I am trying to do is to get a " " inserted after the first 24 characters, and then after the next 24, delete a character and place an Enter or Return value. Then I would like another " " after the next 24, and then after 24 more, delete a character and place an Enter or Return value so on until the end of the string. The format would then look like this.[code]I know this is probably done with some type of array and loop, but I'm not even sure where to get started.
View 8 RepliesI've got a program that in a nutshell reads values from a SQL database and writes them to a tab-delimited text file.The issue is that some of the values in the database have special characters (TM, dash, ellipsis, etc.) When written to the text file, the formatting is lost and they come across as junk "â„¢ or â€" etc"
When the value is viewed in the immediate window, before it is written to the txt file, everything looks fine. My guess is that this is an issue of encoding. But, I'm not real sure how to proceed, where to look, or what to look for.Is this ASCII or UTF-8? If it's one of those how do I correct it before it's written to the text file.Here's how I build the text file (where feedStr is a StringBuilder)
objReader = New StreamWriter(filePath)
objReader.Write(feedStr)
objReader.Close()
character manipulation in a String.
How do you change characters in a particular string and set them to a particular value.
For eg. I want to change the third character of the string "hello" to Y = > i get "heYlo".
I tried using the Chars function but it says that the function is read only.
I am just a beginner in VB programming. What if I want to check if a certain subtext is present in a string? For example, what do I code if I want to check if the word "hello" is present in a particular string or not?
View 3 RepliesI am in a rather silly situation...suppose I have a text box in which I enter a line of text/characters/numbers...how would I be able to display the last two or first two (or may be middle two?) characters into another text box.
Example: I write "Hello World!" in the first text box and the program should display the first two characters from that text box, i.e. "he".
Ok, so I have a string called item. It's value is "Coffe`". When I try to get the number of caractors by using:
textcount = item.length
However it returns with the value "5". even though there is 6 caracters.