C# - Reading Characters Off Of The Screen?
Feb 15, 2010
I've been trying to find a solution to my problem for quite a while. I need to build a program that reads data off of the screen, recognizes characters and images and then acts based on what characters and images are. For example, I provide it with a picture of a dog, a picture of each possible character, and it would be able to read the screen and tell me where the dog was, where the characters were and in what order, etc. Is there a free library for this out somewhere? I prefer something that can be used in C# or Vb.net
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Oct 11, 2009
Trying to read and display the text between two re-ocurring characters with a Serial connected device. The beginning of string starts off with "+8" and ends up with "0+". The string displays correctly between the characters, however I do not wish to see these characters. Here is my code that I used from a serial comm chat. P.S. this displays on two lines, the characters that I'm asking about are on the second line.
Private Sub DataReceived(ByVal sender _
As Object, ByVal e As System.IO.Ports.SerialDataReceivedEventArgs) _
Handles serialPort.DataReceived
[code]....
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Jan 9, 2010
i tried out this code to read characters from an existing file:
Dim SR As StreamReader
Dim FS As FileStream
FS = New FileStream("D:email.txt", FileMode.Open, FileAccess.Read)
[Code].....
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Mar 15, 2011
I have a tool which reads dBase files and uploads the contents to SQL Server, part of a system to import shapefiles. It works but now we have a requirement to import files that include non-English characters (Norwegian in this case, could be other languages later) and they're being corrupted. The dBase files are being read using an OleDbDataAdapter. Stepping through the code I can see that the text is wrong as it is read in. I'm assuming it's something to do with code pages or Unicode but I have no idea how to fix it.A dBase Reader application tells me the DBFs are in code page 1252 - I don't know if this is correct. My upload tool runs on Win7 with English (UK) regional settings.[code]Is there a way to tell OleDbDataAdapter what code page to use or a better way to read dBase files from VB.Net?
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Jul 5, 2011
I have a code to rewrite an ini file, but characters such as 'ñ' will get changed to '?'. This way my whole ini file will get ****ed up, I have no idea to fix this and this is a serious issue for my application.You can find my whole source file here:
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Dec 12, 2011
I done this:
sTxt = File.ReadAllText("C:someWebPage.html")
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Oct 4, 2010
reading dBase DBF with non-English characters
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Jun 23, 2009
fI am reading some 10 fields per line from a text file. One of the field is in Chinese Characters. The other are numeric or english strings. When I open the text file (using notepad), I can see all characters displayed properly, including the Chinese. BUt when I read the line o text into a variable oneLine in a VB program using the following code:
Dim V_file As String = "N:Table_test.txt"
Dim oneLine As String
Dim scanfile As New IO.StreamReader(V_file)
[Code].....
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Feb 4, 2009
My project needs to read and count the individual characters in a textbox. Is that possible? If so, how so?
Nameone = TextBox1.Text.ToLower
For F = 1 To Nameone.Length
L = Nameone(F)
[code].....
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Aug 13, 2010
So I want my program to read a file, but sadly there are null characters in the text file. The program searches for strings and I want it, when searching, to ignore all of the null values and just the actual characters. Is this possible?
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Jan 27, 2011
I have .txt file with ANSI encoding format which is generated from Japanese OS.
so it has Japanese Characters in ANSI txt file.. i don't know how japanese characters allow in ANSI txt file..
My doubt is that
How to read all language characters from ANSI txt file. That txt file will contain any characters like English,Japanese,Chinese,Numbers etc... ( Any kind of characters )
I want to read that characters as it is in file..
Dim sr As New StreamReader(_FilePath)
While Not sr.EndOfStream
MsgBox(sr.ReadLine)
[Code]....
Is there any general way to read all types of characters with ANSI format ?
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Jul 2, 2009
I am trying to read the file contents using
System.IO.File.ReadAllText
After reading the file contents the special charaters gets replaced with some garbage characters like "?".
To eliminate this I have used encoding along with above method
System.IO.File.ReadAllText(strFile, System.Text.Encoding.ASCII)
But still it is not working.
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Nov 23, 2008
Q1)My ASP.NET VB Script will write long writings - like many thousand words into my Access DB but i have previously had problems with the text containing characts such as '.Is there a way of inserting such?
Q2)When I read a database field in consolidates it into my string variable on a single line. What variable type should I use to have it maintain the line spacing and stuff.
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Jan 14, 2011
I'm having some issues reading from an INI file in my Splash screen.
- I have a MainForm and a SplashScreen form
- I have an array of a structure setup in my Mainform as
[Code]...
as can be seen in the screenshot below I'm trying to add to this array in my splash screen but get the error below as-well I have tried running the same code in my Mainform under a function LoadSettings() but when doing this it instantly loads my Splash Screen and opens my MainForm when this is only suppose to open after 5sec
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Oct 26, 2006
I would like to read information on a Web Open Connect Screen into a VB program and send appropriate key stroke based on the screen been presented.
I am able to send to the screen using SendKeys but I don't seem to be able to manipulate the cursor and read the data at the cursor position.
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Mar 19, 2011
I'm new to VB and new to programming in general. I'm working on some code for school which I'm taking online, and the book doesn't do a very good job of explaining how to do this. The array in the txt file contains this info.
[Code]...
I have a list box, which will contain the item numbers and then a price label which will contain the item price. Here is the code I have, but when it reads from the file, it puts all information from each line. I understand why it does that, I just need to know how to set it up to read it as an array.
[Code]...
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May 1, 2011
I have conquered the problem of the database however what i need is the serial port data sent to a database and outputted on screen however i keep getting cross thread errors ..
Imports System.Data.OleDb
Imports System
Imports System.ComponentModel
Imports System.Threading
[code]....
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Jun 29, 2011
BTW this issue occurs in any MS office program when the VB.Net (or even VBA) is processing information.Example: In Excel, a worksheet is displayed on the screen. I start either, a VB.Net or VBA procedure and within 30 seconds the Excel worksheet (previously displayed) blanks out. In both VB.Net and VBA,ScreenUpdating = False. My expectation is that the previously displayed screen would stay static as if I left my desk to get a cup of coffee; came back and the same ole Excel worksheet was still there?Of course, setting VBA Screen Updating = False accomplishes two goals: 1) speeds up processing and 2) saves the user from seeing unnecessary "garbage-processing" steps.Why does VBA or VB.Net ScreenUpdating = False not freeze the screen at the time of its invoking?
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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 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).
[Code]...
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Jul 6, 2011
Currently I have the following VB.NET code to make a screenshot of my desktop, but it only takes a picture of the active screen:
Public Function SaveScreen(ByVal theFile As String) As Boolean
Try
SendKeys.Send("%{PRTSC}")[code].....
The following code is how I execute the above function, if it makes any difference, which I don't think it does:
SaveScreen("C:Lexer_tracescreen.png")
Now, I need to be able to take a picture of the entire screen, not just the focused window.
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Feb 2, 2012
Now I'm creating at app in VB (Microsoft's, Visual Basic 2010) which will be in full screen but I want to know if I can put all my content in the centre of the screen. At the moment it's at the far top, left of the screen. When the screen size varies I want it will stay in the middle for all shapes and sizes. Like :
<div style="margin: 0 auto; width: 500px;"></div>
But this is for web pages using HTML and CSS.
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