VS 2010 VB 2010: Detecting String In Between 2 Characters?
Apr 17, 2010
detecting the string between 2 characters, EG " is the starting character anything the user types is the string" is the ending character
like this:
" <user text> "
I need it done so it changes the syntax. I am using a RTB to change the syntax.Here is my code.word is the list it needs to be added to, NOT rwrd
Private Sub RichTextBox1_TextChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles RichTextBox1.TextChanged
Dim words As New List(Of String)
Dim rwrd As New List(Of String)
[code]....
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Dec 2, 2009
I am trying to write a function for determining the data type of columns in a delimited file.However my function is not detecting a newline and exiting the loop after the end of the first line.* 'del_2' is equal to a new line character, i have tested this using a small bit of code
if del_2 = ControlChars.NewLine then
MessageBox.Show("It is a newline")
end if
and got the message, and i know the newline characters are at the end of each line in 'filecontents' as i am adding them manually.
Public Shared Function DetermineColumns(ByVal filepath As String, ByVal delimiters As KeyValuePair(Of String, String)) As List(Of KeyValuePair(Of String, Type))
Dim result As New List(Of KeyValuePair(Of String, Type))
[code]....
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Apr 29, 2012
Dim a() As String = {"h", "e", "l", "o"}If a string has a character that is not listed in that array, give an error, how is it possible?
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Nov 22, 2011
I need to parse an alphanumeric string leaving the characters "0-9", ".", "/" and space & remove everything else. I use "[^0-9./ ]" as my regex string and it works well. But now I have a couple other conditions that I dont know how to handle with my regex string. I actually only want to keep the "." character if it falls between two digit characters (ie. 3.5), otherwise remove it. And also I need to replace any "-" characters with a space if it falls between two digit characters (ie. 2-1), otherwise remove it.
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Oct 23, 2011
If I want to remove 2 characters, or a specific letter or character from a string in VB, how would I accomplish this?
A usual input would be
"63.0" in string format
and I want it to be
"63"
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May 27, 2011
Is there a build in function that removes the following without doing a replace for each character?
"NUL", "SOH", "STX", "ETX", "EOT", "ENQ", "ACK", "BEL",
"BS", "HT", "LF", "VT", "FF", "CR", "SO", "SI",
"DLE", "DC1", "DC2", "DC3", "DC4", "NAK", "SYN", "ETB",
"CAN", "EM", "SUB", "ESC", "FS", "GS", "RS", "US"
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Apr 14, 2011
I'm working on a form in which strings of text are being imported. A lot of these strings contain special characters, like �, �, �, &, �, etc...
When I convert these strings to text, so they can be shown as labels, the special characters either disappear (like the '&' sign) or they are shown as some sort of icons. How can I let VB handle these strings, so the special characters are shown the way they should, without having to change the (many hundreds) original strings of text?
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Feb 19, 2012
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim fso, inputFile
Dim str As String
fso = CreateObject("Scripting.FileSystemObject")
[code]....
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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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Nov 6, 2011
I need my program to 'listen in' for a specific sound.
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Apr 22, 2012
looking for a way to detect all available AT Command ports on connected USB Mobile Modems.
I've tried messing with WMI a bit, but was only able to detect the HSBC ports, not the AT Command Ports which is nessassary to issue AT commands to the modems.
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Apr 6, 2012
I have implemented tab control on an existing form by using form designer and copying button from an existing vb application. my goal is to run a piece of code when a button on a tab page is sellected. How do I go about implementing this? I can detect in the code which tab page was selected but not that the button on the page is sellected.
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Mar 1, 2011
I'm wondering how I would go about getting CPU, GPU and HDD temperatures and fan speeds, is there an easy API for this? I have a feeling there isn't
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Aug 5, 2011
I have a program which when a button is clicked on a form sends the form to the back, so that Notepad can open on top, then it opens up notepad
Me.SendToBack()
System.Diagnostics.Process.Start("notepad.exe", myPath & "*********.txt")
Now what I want to do is to detect when the notepad has been closed then I can bring the form back to the front and I just do not know which commands to use for this to detect a program outside of VS 2010.
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Nov 16, 2011
I've been searching this for quite a while now, but I've come up with very little so far. I need to figure out how to determine when a laptop lid has been closed so an execute an action when this occurs. But the power settings will be setup to where the laptop does not go into sleep or hibernate mode.
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Dec 7, 2011
I've been attempting to determine if a notebook's lid has been closed when the power setting is set to "Do Nothing."I was able to get this to work by trapping the WM_POWERBROADCAST message, but it would only work when the computer when to sleep. I've tested this on many different notebooks and the results vary. Even when changing the power settings correctly, the results were fairly inconsistent.So I posted this question in General Developer and penegate offered a possible solution.[code] I'm thinking that maybe the message I'm trapping isn't correct, but I'm not 100% sure. When I Google that message, nothing comes up. Two links appear. The one on VBF and some German site. Nothing's on MSDN.
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Jun 7, 2012
how do I make a textbox that counts every single mouse click made while the application is open?
Private Declare Function GetAsyncKeyState Lib "user32" (ByVal VKey As Long) As Integer
Private Sub WebBrowser1_MouseDown(ByVal Button As Integer)
Select Case Button
[code]......
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May 20, 2012
I am trying to detect when the user selects a checkbox on the new line of a datagridview
I am using the following code but it doesn't detect the new line has been selected. When running debug IsNewRow shows as FALSE
Private Sub DataGridView1_CellContentClick(sender As System.Object, e As System.Windows.Forms.DataGridViewCellEventArgs) Handles DataGridView1.CellContentClick
[Code].....
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Mar 16, 2012
I need to list printers on a remote pc and am gettings errors trying to use wmi code but I am open to another way of doing this,
Private Sub DetectPrntrs()
Dim strComputer As String
Dim colPrinters As String
[code]....
I get the error:'Name' is not a member of 'Char'.
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Dec 19, 2010
I have the following code that goes to a webpage and is suppossed to wait until the webpage has fully loaded.[code]
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Jan 27, 2012
I thought it was simple but i guess it's not...How do I detect when the tab key is pressed in a textbox?I've tried the following code in KeyPress, KeyDown, Leave, etc. events but the tab is not detected.
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Dec 5, 2011
I am creating an application that creates scripts to move a mouse and to click where a user wishes to via pre-programmed code and to also press keys where required. I have the code to move a mouse and to manually click anywhere. What I am after is to detect when a mouse button is pressed and dragged and when keys are pressed.
I see that there is the following
MouseButtons.ToString
To detect when a mouse button is pressed, and have it looping in a timer. Is there a better way to do this? I would rather not use a timer. And is there a similar routine to detect which keys are pressed?
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May 13, 2011
I'm trying to detect the Printscreen keypress with the use of a timer. I can't useform1_keyup/down as the focus isn't always on the form.
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May 16, 2012
My Visual Basic .Net 2010 application reads data from an EXCEL spreadsheet which will be generated by my "customers". The responses to Alkis last year (23 July 2011) has been a big help and got me over a hump in my application. Now I am down to the last issue - how do I detect a blank cell? Valid data is numeric, starts at a fixed cell (A5 to be specific), and will be continuous until it ends with blank cells. While blank cells appear to print a "zero", when I try to use zero as an end criteria I get a 'System.InvalidCastException'. When I put in a specific end value (-1) in the last cell all works fine but that, of course, is an invitation to a user error.What is the difference between "Value" and "Value2" and where might I find documentation that explains the difference? [code]
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Feb 15, 2012
Is there any way of detecting the position where the Mouse Button is released during a Drag & Drop operation. I need to know whether the intended Drop position was not reached when the mouse button is released.
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Jan 4, 2011
I need to create a program that can run code each time the user clicks, I can't use windows forums since its on another program. If the code can detect global mouse clicks(system wide) or only on one program it's fine.
I've done some digging and it looks like windows API can solve my problem but i really suck at using windows API and it looks like SetWindowsHookEx() can solve my problem but i don't know how to use it correctly. This is the code from Pinvoke that I modified to hopefully work for a mouse click. i'm having trouble getting this to work.
Imports System.Runtime.InteropServices
Imports System.Windows.Forms
Module Module1
Sub Main()
Dim t As New MouseHook
[Code]...
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Aug 11, 2011
I want to make an auto log off feature, I want to detect if there is any user input, and if there isn't the user will be automatically logged off. So I want to know how to detect mouse wheel events when the form doesn't have focus.
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May 3, 2012
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?
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Feb 15, 2012
I am retrieving string values from a table and then encode each term to make a httpwebrequest to an api. It works fine and the terms allow for foreign characters like japanese/arabic/chinese etc and these are inserted fine. The problem occurs when some of these terms contain weird characters and that is when the request is bad. The only reason it is bad xml and the template I follow gets invalid are when these characters are present. I use the
system.securityelement.escape
And also
httputility.htmlencode
As part of my cleanup. One of the weird characters ends up appearing as a space but it is not since the trim(term) does not work and when I look at the xml in visual studio it looks like an ' &' with arrow pointing up attached to it. It does not appear after I pasted it here.It appears as a line feed or carriage return and I have tried to remove that too. Anyway is there some way I can ensure that these sort of characters are removed and if I were to use the binary values like <32 invalid, will foreign characters then get excluded.
temp = temp.replace(vbCr, "")
temp = temp.replace(vbLf, "")
temp = SecurityElement.Escape(temp)
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Aug 1, 2010
i am using Microsoft.XMLHTTP to pull information from a php page on my server, and they look exactly how they should look via firefox webbrowser, but via Microsoft.XMLHTTP utputted to a Listview the special characters aren't formmated correctly.eg, & #39; (had to put a space after & as it turns into a apostrophe on the site)
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