How do I limit the number of characters per each line of an RTB to 1 char per line? That is you type one character, after that the textbox should not accept further input on that specific line.-Knock knock -Who's there? -(looong pause..) Java
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I have a RTB which I import with a set of 7 or 9 didit numbers, 7 for Staff and 9 for Students. e.g. Staff numbers [code]and depending on what is selected in a list box ('Student' or 'Staff') will generate a string to create user accounts. To further error check I would like to check if a line in the RTB = 7 And Listbox = "Student" Then msgbox("Data mismatch between User ID and Account type")
View 4 RepliesI'm currently building a Terminal Emulator and can read RS232 data ok into a Textbox.
However, I want to remove a set number of characters before each line received.
I've got so far with StringBuilder but my code is wrong somewhere as it cuts out every other line.
The original text looks like this:W 320:15:25 0300 SAMPLE FLOW WARN
T 320:15:25 0300 CO= 4.6 PPM
T 320:15:25 0300 RANGE=50 PPM
T 320:15:25 0300 STABIL= 0.0 PPM
T 320:15:25 0300 CO MEAS=4012.0 MV
T 320:15:25 0300 CO REF=3457.3 MV
[Code]...
I am a new VB programmer and am using TextBox in VB2008. Here are the problems I experienced in TextBox -
1, After I typed number in TextBox and found I need to type another number. So I used backspace key to remove it. But at this time program quit and displayed this problem: InvalidCastException was unhandled. How to solve this issue?
2, Can anybody tell me how to set number of characters are allowed to be typed in TextBox?
3, Can anybody tell me how to implement the feature that only numbers are allowed to be typed? In case letters are typed, how to tell user to re-type?
Is there a way to show the line number of the line of code that caused an exception within a Try...Catch block?
View 5 RepliesHow do i load a specific or a couple of line(not full file) to a RichTextBox by its line no...
For Example if i want load line 14...
Or sometime line 14-18...
I'd like to know if its possible to copy a certain line chosen by line number(EX: line #3) from rtb1 to rtb2 and then split it word by word and copy those words as new lines into rtb3
Ex:
Originally Posted by richtextbox1
line 1
line 2
[Code]....
You would think a search for this would show some results but I have had no luck.If I want to delete a line by a line number from a text file, how do I do that?
View 6 Replies I only want one char per line to be accepted in my multilined richtextbox. This means that when one char is typed, then the richtextbox should automatically change line.
So typing 'hi!' should show as:
h
i
!
I tried this but i seem to get out of bounds.
Private Sub txtrtb_KeyPress(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyPressEventArgs) Handles txtrtb.KeyPress
txtLength(txtrtb)
[Code]....
I have a textbox multiline and i want to remove each first element of the textbox.
[Code]...
How i can remove the first element of each line of the textbox ?
what i need to do is open a txt file, read line by line, decode each line into an array and display. Now all works ok apart from one line.
sTextLine = objReader.ReadLine() <-- Value of string cannot be converted.
full code here
-------------
Dim objReader As New System.IO.StreamReader(sOpenFile.Text)
Dim sTextLine As New ArrayList()
Dim sText As String = ""
Dim i As Integer = 0
[code]....
how to read text from a listbox line by line and put current line in a label?
View 3 RepliesHow would i go about reading a file Line by Line that within that line The values are delimited by " Example of the data:
"bob" "cat" "1243"
"steve" dog" "6789"
I've started this with this code but not sure how to go about the next stage:
Using MyReader As New _
Microsoft.VisualBasic.FileIO.TextFieldParser(My.Application.Info.DirectoryPath & "Records28112011.jd")
MyReader.TextFieldType = FileIO.FieldType.Delimited
[code]....
I am trying to read in a TextBox line by line and take the first 7 characters of each line and output everything in another TextBox.This is what I have so far.
Dim line, lines() As String
lines = TextBox1.Text.Split(Environment.NewLine)
Dim i As Integer = 0
[code].....
If i have a line in a txt document "text.txt".Now what i want to do is open the file and read the contents.
When it find this "search.selectedEngine" term then it should delete that particular line and replace it with another string ("REPLACED STRING").
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]...
View 4 Repliesi need the app to preview the line in textbox in timeintervalof 1 s (can be change)nd when it will reach to the end it close the text file and andreread it after let say 1 m ..
Private Sub Button3_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button3.Click
Dim myStream As Stream = Nothing
[code].....
I'm wondering is there a way to count the characters on a line like .length but with XML in VB. Take a look at my code and you'll probably understand exactly what im doing.Basically the formula is to count words by saying every 5 characters is a word. So I need to get the amount of characters in the line and divide by 5.[code]
View 3 RepliesI need help with my app. My app is retrieving data from the webBrowser and putting them into individual lines in the richtextbox. My problem is, if the retrieved string is too long then it takes more than 1 line in a richtextbox.
[Code]...
I am searching for a best practice for Incremental Line Number generation i.e in an Invoice application. I am using VS2005, Sql2005 as a development environment. I need to create autoincremental line numbers for an invoice. I dont want to solve it in Database.
[Code]...
Using VB.Net I'd like to be able to replace a range of characters in a string in a single line of code.
i.e. something like
Dim charsToReplace as string = "acegi"
Dim stringToBeReplaced as string = "abcdefghijklmnop"
charsToReplace.ToArray().ForEach(Function (c) stringTobeReplaced =
[Code]....
I am reading a text file with mostly alpha characters. the content is not really relevant but the size of each line is very important. The process I will feed this text to will require each line be no more than 50 characters. So I will pre-process the text and add line feeds to make sure that happens.I tried several VB.NET regex like ^.*$ but that doesn't really break up the lines by 50 characters. I would take the result and iterate through each match and then cut it up and write it to an object in memory. Can this be done with a single regex pass?Otherwise I will use a streamreader and on each line check the length and if <=50 write it out with a streamwriter. if >50 cut it up in sections of 50 and then use streamwriter.
A brief example of my text:
119 SMITH KATY AAAA F ZZZ X NB SX ET
MILES,200/LM450
[code]....
I have a listbox where each line contains a short 3-4 character model number followed by a tab and then the product name the model number corresponds to. I also have a textbox which I am using to search the listbox.
The code I am using so far works somewhat, just not exactly how I would like. If I enter search text it will highlight the results in the listbox but only for the first characters, is there anyway to search the text of an entire line (index) of a listbox?
Right now I am using the following:
Private Sub txtSearch_TextChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles txtSearch.TextChanged
ListBox.SelectedIndex = ListBox.FindString(txtSearch.Text)
End Sub
I'm doing a notepad project, just because, and in Ms's notepad there is an option for a statusstrip. I'm just having probems getting the line number and I know it's not called column number, more like selection start. When I do the selection start, it works, just not how I want it to like so:
[CODE...]
but when I use that, it acts funny. I have it in my textbox's.keydown event. So if I were to use the arrow keys to navigate around text then it gets thrown off very easily. How would I do this?
i have form1 with combobox1 and rtb1 i would like to search the rtb1 for combobox1 selected value and return the first 9 characters from the line with the result.
COMBOBOX1
ADRIATIC
AMERICA
APAC-ANZ
[code]....
so if combobox1 selected.value = "BALTIC" then i would like "1209-4756" to become a named string (eg, cda = 1209-4756)
Now i need to add a number to each line.
If File.Exists("C:adresa.txt") Then
Dim file1Sr As New StreamReader("C:adresa.txt")
Dim theLineNumber As Integer = 1[code].....
why thos code will not add a number to each line from text file ?
How to get a line number that contains a specified string in a text file?
Example text file contains:
Red
White
Yellow
Green
How to get "Yellow" line number? and can i write a string in a specified line, lets say i want to write a string in line 2?
When a error occur it easy to know at witch line the error occur within the Exception class, but Is there a way to know what is the Code line itself?[code]...
View 7 RepliesHow to get a line number that contains a specified string in a text file?Example text file contains:d White Yellow Green
View 3 Repliesa user copies multiple lines of text (say, from an email) into the clipboard. Based on my observations, when one tries to paste the text into a single-line textbox, only the first line is actually pasted in. (I am aware that the "obvious" solution would be to set the Multiline property to True, but there are reasons I am looking to avoid this and to put multi-line data into a single line.)
In the TextChanged event handler, I wrote code that parses the clipboard data to successfully convert it to a single-line, comma-delimited format.
Private Sub txtMassTrackingNo_TextChanged(ByVal sender As Object, ByVal e As System.EventArgs) _
Handles txtMassTrackingNo.TextChanged
[Code].....
