VB Strings Exceeding 30 Characters?
Jul 24, 2009
On Visual Studio 2008 I am running into problems with strings longer than 30 characters, which become blank. My context is slightly unusual (perhaps) - but I dont see why it should not work.I am calling a VB2008 script from C++ using the COM interface [URL].. It works fine with integer and real arguments, and with strings up to 30 characters long.(see below - the example above is easily generalized to arguments as String, in which case the C++ code declares a BSTR object and uses L"xxxx" to set the string to "xxxx").
Surprisingly, I get a problem if the C++ string exceeds 30 characters in length - the string received by the VB routine becomes "" , ie, completely blank.I checked and this is not just a limitation of the debugger viewer - it really is "". However there is no problem with local strings exceeding 30 chars - the problem appears in passing of the argument, both byVal and byRef.
[Code]...
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Mar 11, 2010
So I've got a list of strings in ListBox1 and I want to remove the last seven characters from each string in the list and write the output to an excel file...
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Jan 28, 2009
I have a program where I copy strings from one file to another. I then create folders based on the strings. It works great 99% of the time. Once in a while I get this error:
Illegal Characters in Path
Here's the line of code where it happens:
If Dir$(txtSaveLocation.Text & "" & name1 & "" & name2, vbDirectory) = "" Then
It is just checking to see if the folder exists yet or not.
When I move my mouse over the variable "name2" the value shows up as
"test name 2
That's right, no closing quotation marks. How is this possible? If I manually add the quotation marks while in debug mode and restart execution the code works fine.
I do have a function to strip out illegal characters first too:
For loopCTR = 0 To strip.Length - 1 'strip characters out
name2= name2.Replace(strip.Substring(loopCTR, 1), "_")
Next
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Nov 3, 2011
I am trying to split a data field in VB using the split function.
The data field has the following character strings"&|:"
which I need to base my split on.
Dim elements As String() = Regex.Split(dataField, "&|:")
field1 = elements(1)
field2 = elements(2)
The field1 and field2 still have a trailing "&|" chracters.How do I check if the field1 and field2 have these trailing characters? How do I delete them?PS - I have tried "&\|:" as the delimiters in the split function which did not work.
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Jul 19, 2011
I was wondering how to draw characters/string on a bitmap.For example: I have created a new Bitmap with resolution of 200x200. Now using Graphics.DrawString(), I have to draw text. I can draw text. But my question is, I want to fill it the image with that string.Say, the text be "abc".So, the output would look like this for 200x200 bitmap (assumption):
[Code]...
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Jan 28, 2010
ok i know its not possible for a normal computer to exceed Long.MaxValue for Stopwatch.GetTimeStamp, but what is the scripted behavior of VB when Stopwatch.GetTimeStamp actually exceeds Long.MaxValue?
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Mar 21, 2012
I'm trying to get a specific error message posted when a user tries to upload a file that exceeds the maxrequestlength of 10MB for my asp:fileupload object. However, adding the onError attribute to my fileupload object, the user does not get the error I want displayed; the page just crashes. Setting customerrors mode to on and setting up a redirect page doesn't work either; the page still crashes. How am I supposed to get the page to display a specific error without crashing?
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Apr 6, 2009
I've drawing text to a rectangle, say for example "ABCDEFGHIJKLMNOPQRSTUVWXYZ123456789",That should be centered (which it is), but be on one line, not clipped like this:
"ABCDEFGHIJKLMNOPQR
STUVWXYZ123456789"
my String Format is:
With sfFormat
.Alignment = StringAlignment.Center
.LineAlignment = StringAlignment.Center
.Trimming = StringTrimming.Character
.FormatFlags = StringFormatFlags.NoClip
End With
It doesn't even have to trim it, like I have in my code, but it won't even stay on one line.
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Apr 28, 2011
I had some trouble a while back with my progress bars exceeding their maximum sizes. I though I had fixed the problem but obviously I was wrong every time the maximum size is exeeded the application enteres debugging mode .... this is really frustrating as the progress bars are a major factor in the game...
What I have is one progress bar which is linked to a clock the clock which ticks up to 1:30 and the game then ends. I also have another progress bar showing the health of the shooter.
I have a series of collision codes set up which are linked to these progress bars, that add to them and take from them.
'Heath pick up collision code...
If (HPU.Top + HPU.Height >= Shooter.Top) And (HPU.Top <= Shooter.Top + Shooter.Height) And (HPU.Left + HPU.Width >= Shooter.Left) And (HPU.Left <= Shooter.Left + Shooter.Width) And HPU.Visible = True Then
[Code]....
I have tried re-routing the overload so that if it cannot add no more to the progress bars it adds nothing to them.
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Oct 16, 2009
Say I have a List(Of Tag) with Tag being an object. One member of Tag, Tag.Description, is a string, and I want to make a comma-separated concatenation of the Description members.Is there an easier way to do this than to read the Description members into a List(Of String) and then use the Join function?
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Aug 13, 2009
I am working on a UDP Client/Server, and currently i have them sending back and forth strings, which i convert to bytes, and then open the bytes to read. I want to now send an Object instead of those strings, which includes multiple unsigned integers and strings.
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Dec 21, 2011
Essentially I am trying to replicate the Windows 7 (In-Windows) activation key TextBox form. The Form where it will auto capitalize letters, remove or deny all non alphanumeric characters except dashes every 5 characters that will be auto-input.I assume this can be done with a fairly complicated replacement Regular Expression but I cannot seem to create one to fit the needs.
This is an Example of what I have right now, but it creates an infinite loop as it removes all characters including dashes, than adds a dash, which changes the text and removes the dash again.
[Code]...
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Sep 13, 2010
i have been trying to remove special characters. i am not able to remove many crlf in middile of the string.
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Aug 3, 2009
I 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.
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Feb 23, 2011
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')
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Aug 5, 2011
I have two textboxes. I type in one of them and the text gets copied in real time into another textbox. There is one catch. I need to replace specific character with something else.
If I enter a quote " in textbox1, it has to be replaced with " in textbox2.
I started with something like the below code, but obviously this does not work (tried different stuff - this is for demonstration only). In the example below 'a' represents " , and 'b' represents "
Private Sub TextBox1_KeyUp(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles TextBox1.KeyUp
TextBox2.Text = TextBox1.Text
[Code]....
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May 9, 2011
With the shape of really large characters such as numbers and alphabetic characters + others, is there a way to get that shape as a REGION please?Imagine a really fat snake forming the letter S or two rectangles placed together to form a large letter L or a T like the shapes in TETRIS.
1) Does anyone know of anything in VB.Net that can translate such shapes into a System. Drawing.Region or know of a project elsewhere that achieves this please?
2) While I'm on the subject, how would you SCALE UP / DOWN a System.Drawing.Region please? How would you work out the Transform Matrix required please?
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Aug 27, 2011
I'm making an application that will change position of two characters in Word.
[Code]...
Program works good, it is mixing characters good, but it doesn't write text to the file. It will write text in console, but not in file. Note: Program is working only with words that are divisible by 2, but it's not a problem. Also, it does not return any error message.
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Feb 20, 2011
I'm making a custom control suited for handling passwords. I have created a control that inherits from a text box and I have implemented a lot of things so far. But what i want to do now is create a system so that when a user types It will display his last character typed for a X amount of time. Is there a way to turn only selected characters into password characters and still be able to get the password text from the Text property ?
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Aug 5, 2010
I have a list of strings. For each string in that list, I want to prepend another string. I wrote a method to do it, but I was wondering if there was something already in .NET I could use to do this. It seems like something that could be built in, but I was not able to find anything.
Here is the method I wrote:
Private Function PrependToAllInList(ByRef inputList As List(Of String), ByRef prependString As String) As List(Of String)
Dim returnList As List(Of String) = New List(Of String)
For Each inputString As String In inputList
returnList.Add(String.Format("{0}{1}", prependString, inputString))
[code].....
It works, but I would rather use built in functions whenever possible.
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Oct 16, 2009
I'm migrating from VB6 to VB.NET, in hence my questions below:
I have to write a function that returns array of strings.
How can I initiate it to empty array? I need it since I have to check if it's empty array after it returns from this function.
Is list of arrays better for this purpose? If I use a list - Is it empty when it firstly defined? How can I check it it's empty?
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Aug 15, 2011
I have been looking for examples to find the string between two strings. This top one works fine;
Public Sub ReadData(ByRef keywordStart As String, ByRef keywordEnd As String, ByVal filename As String)
Using reader = New StreamReader(filename)
[Code].....
Now the first one is fine - Ext_Volume is result of the string between the strings <Volume> and </Volume>. <Volume> and </Volume> are unique so this is straight forward.
However the second one - "^FDExp:" is unique, but "^FS" is not unique. There are occurances of "^FS" before and after "^FDExp:".
How do I get the string to search AFTER the occurrence, not before etc?
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Jun 24, 2011
Dim str As String
Dim str2 As Array
str = "blabla duhduh"
str2 = str.Split(" ")
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Apr 6, 2012
Say the string is something like
bla bla bla bla (cat) bladfdskdfd dsgdsdksf (dog)
dfdshfdskdskfsdfkhsdf sdkfhdsfkdf (kathy) fdsfhdskfhdsfkd (doggy)
I want a generic.list (of string) containing
cat
dog
kathy
doggy
How to do that with regular expression in vb.net
Later I want to do something more complicated like getting all strings between "url":" and ", from this strings
[Code].....
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Jan 8, 2012
Is there an easy way to find a certain string within a string and then return the strings that you find as an array?I have written this:
Public Function FindStrings(ByVal strSourceString As String, ByVal strStartString As String, ByVal strEndString As String) As String()
Dim StringStartposition As Integer
Dim StringEndPosition As Integer
Dim Currentposition As Integer = 1
[Code]...
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Jan 16, 2011
I have this string called time. It's value is in this format: HH:MM:SS The numbers change, but the format stays the same. I want to separtate the code into 3 strings Hour, Minutes, Seconds.
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May 14, 2009
I have a DataGridView that has some columns with dates. It binds to an in-memory Datatable which gets loaded from an string array of data passed back from the backend Some of the rows returned have nulls for the date columns. Solution 1: If I define the Date column in the DataTable as "string" I can easily convert those nulls to empty strings and display it in the grid as empty strings (desired results). However, if the user clicks on the date column header to sort by date, it doesn't order the rows as you want. You get a purely string sort order. Not acceptable
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Aug 4, 2009
I know that the topic is kind of weird, but I will explain that here. I am reading text from a text box and inserting that into a listbox. I am wanting to read what the user inputs into the text box and add a character between each character they type. Here is what im wanting to do written out[code]...
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Aug 4, 2010
example. i have 2 textboxes and if there empty it says "Incorrect Information", but how do i make it that like when a person enters something into the textbox1 it can be 3 values minimum.. like it could be eather 2 letters 1 number or what ever just more than 3 values (no special characters), and on the password.. 6 values minimum (no special characters).
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Aug 7, 2009
So I have an ASP.Net (vb.net) application. It has a textbox and the user is pasting text from Microsoft Word into it. So things like the long dash (charcode 150) are coming through as input. Other examples would be the smart quotes or accented characters. In my app I'm encoding them in xml and passing that to the database as an xml parameter to a sql stored procedure. It gets inserted in the database just as the user entered it.
The problem is the app that reads this data doesn't like these characters. So I need to translate them into the lower ascii (7bit I think) character set. How do I do that? How do I determine what encoding they are in so I can do something like the following. And would just requesting the ASCII equivalent translate them intelligently or do I have to write some code for that?
Also maybe it might be easier to solve this problem in the web page to begin with. When you copy the selection of characters from Word it puts several formats in the clipboard. The straight text one is the one I want. Is there a way to have the html textbox get that text when the user pastes into it? Do I have to set the encoding of the web page somehow?
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