Detect Last Character In A String And Identifying It?
Oct 23, 2010I need to get the last Character in a text string and to decide if it is an equals sign or not.
View 5 RepliesI need to get the last Character in a text string and to decide if it is an equals sign or not.
View 5 Repliesso in a program I'm working on in VB.NET I'm trying to make it so I can take in a list of strings (each on a different line). For each line I want to take in the line, and break it up into three parts. The first part goes from the beginning of the string to the first colon in the string, the second part goes from the first colon to the at symbol, and the last part goes from the at symbol to the end of the string.
For example, I'd take in a line of the series of lines: hello:world@yay
I'd want to break it into three separate strings of "hello", "world", and "yay".
How would I do such a thing in VB.NET?
Is there a way to detect a Chinese character in a string which is build like this:
dim test as string = "letters 中國的"
Now I want to substring only the Chinese characters. But my code is database driven, so I can't substring it, because the length is always different. So is there a way I can split the string, from the moment I detect a Chinese character?
How do I make a regex that can detect a certain character string that is either all by its self in a line, or separated by white space.
If I have the line:
"ot"
Or the line
"sdf gdfg dv ewrsef fvdf ot sdfsd sdot"
I want to be able to detect the 'ot', except for the one that is 'sdot'
The string is coming from this [url]...
View 2 Replies[Code]...
For each character of this string I want a new character out of the string and then remove the character from the list of characters that still maybe used for other characters. It may not get the same character, you could basically just call this encryption, but it's not what I am making. I don't want to waste my time doing this one hour while VB can do this for me in <1 second.
I am writing a hangman type game and I am displaying the word to the user in a label as all *'s, but I cannot figure out how to have just one of the *'s changed in the label to the correct letter when the user inputs the correct letter into the text box and clicks the check letter button.Everything else in the program works perfectly, except for this part.[code]When I use the .Replace it changes all of the *'s to the correct selected letter.
View 2 RepliesAnybody knows how to detect that the user has pressed on the ESC key when in a FileSave or FileOpen Dialog, in VB.Net ?I have added KeyPreview to the form on which the FileDialog rests, but the key press is not seen and the FileDialog returns the file name I had given it as a suggestion to the user upon calling the FileDialog.
View 2 RepliesAnybody knows how to detect that the user has pressed on the ESC key when in a FileSave or FileOpen Dialog, in VB.Net ?have added KeyPreview to the form on which the FileDialog rests, but the key press is not seen and the FileDialog returns the file name I had given it as a suggestion to the user upon calling the FileDialog.
View 2 RepliesI'm writing a program and it's got a textbox for the user to enter values. Since the textbox text property should only be a "number", my program need to detect invalid charaters like "*/&()$" and tell the user to only enter a number. Does anyone have an idea how to do that?
View 6 Repliesthe coding is to 'Get input string and put its character into List, and replace the character with other.'but having problem putting each character into List and also replacing it,[code]
View 2 RepliesI've been working with the substring command and after coding up all the things I needed it to do, I saw a post on here where the "For Each" statement was used basically to do the same thing.Lets say we just want to take a string apart one character at a time and add each character to a label. Which would be more efficient?I made a cheap example to show ...
Code:
ABinary = "0110 1100 0001 1011"
For x = 0 To Len(ABinary) - 1
[code].....
Below is the code i am using for user input which works fine apart from one thing that i can not work out how to do.I want to detect if a user had inputed a character in the wrong place. The correct input is:
D:Folder name
The incorrect input is:
D:Folder name
How would i detect the extra '' at the end?
Private Sub OK_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles OK.Click
Select Case Doc.Text
Case ""
MsgBox("Invalid Path")
[code].....
I need to convert a string array into a very long string with following requirement:
can not using any character escaping can not using XML can not using single character as separator (e.g. comma or space as separator)
Almost each letter of my mother tongue (Arabic) has two or more forms to be written with, due to its position (At the beginning, middle or end of a word) and what are the two letters before and after it, however, I've been trying to figure why when I type something in a textbox and use the AscW method to get the character code, it returns a code for the same character but not of the same form, which means:
If I type a word starting with the letter above, the letter would be in the initial form (its Unicode is &HFED3 = 65235) , but when I use the AscW to get the code of the first character it returns the code (&H641 = 1601) of the same letter in actually none of the previous forms but apparently in the isolated form (&HFED1 = 65233).I've also tried to convert the default encoding to the Unicode's but had no accepted result and no solution through reading the two Unicode bytes (which had to be [211, 254]).
P.S. I tried something else:
TextBox1.Text = ChrW(&HFED3)
Msgbox(AscW(TextBox1.Text(0)))
to check if the problem is the AscW method, but it worked just fine, I have another idea running through my mind but I'm still not sure about it .So, is there any way to detect the actual form of a Unicode character?
Does VB have an equivalent to the @ symbol in C# to quickly and efficiently escape a SQL command line string?
View 1 Replies[code]I have this XML file, how do i get the ID attribute? this question is not about "how to get attributes in xml's", i've found several solutions, but somehow i can't address to this specific attribute in this specific node.i can get info inside tables that are within "infNF" and i'm loading it into a dataset and using this code: ds.Tables(Table).Rows(row)(node)is there a similar way to do what i want to get THIS attribute?
View 3 RepliesI'd like my application to be able to detect a where a particular USB device has been mounted, and adapt accordingly. Ideally, I'd associate paths with a USB serial number, rather than with a given path. However, I cannot figure out a simple way to access these unique IDs from VB.Net code.
View 1 RepliesI have a question that relates to identifying words or characters in text boxes.Okay, I know that I can identify the entire text with textbox1.text = "~~~~". But say I want to search for a specific part.e.i.(in textbox)Hello, how are you?(in textbox)How, in code, would I find and select, let's say, the word "how"?Please, if you can help, I need it. I want to learn as much as I can about Visual Basic so I can become a better programmer.
View 13 RepliesI want split a gridview row on an html tag. How can i do this preferably in C#??.row.cells[1].Text.Split("htmltag")
View 7 RepliesHow do i detect a part of a string from a string? For example: i want to check if the part of the string "mummy" exists in a string:"Mummy loves Daddy and loves me too"
View 1 RepliesMy VB.NET (3.5) application generates Excel reports. Newer versions of Excel support the Office Open XML file format, while older versions don't.
I'd like my application to identify which version of Excel is installed on the local machine, and use a different method for generating the report (Newer versions: by generating an XML file. Older versions: by utilizing Excel Automation).
How can I identify the Excel version installed on the local machine?
The basic question is can I assign a variable to represent a control? As an example which of 12 tickBoxes have been ticked. Is this possible with a for next loop?
View 5 RepliesIs there an automated tool for VB.Net that will identify all global variables in a project?Short of that, is there any scripts that can be used that will facilitate a manual review of global variables?There seems to be tools for C/C++, but not for VB.Net:Tools to find global/static variables in C codebases there a tool to list global variables used and output by a C function?
EDIT:
My current approach uses the following VS REGEX searches:
For finding global variables:
[code].....
In the dgv_CellEndEdit event I know I can find which cell I'm in by the "CurrentCell.ColumnIndex" property. I'd like to be able to check the current column name. If I use "columnIndex" and a column is added or deleted this could cause errors.
View 2 RepliesUsing VB.Net & SQL Server 2005[code]...
I want to take a first character from the string (s)
I have a table of data exported to an Excel file that contains a Date/Time Field. The entries in the table are formatted like 01/01/2009 14:00 (military time). Every line in the table contains unique information that is specific to that particular date/time information, 1800 lines of data (the reason that I dont want to hand sort this table). How can I identify the items in the table that fall after a particular time of day? More specifically, I need to identify which of the data fields have a time after 14:00 on that particular day.
View 1 RepliesWhat conditional statement is used to identify if username.text is empty or password.text is empty or both is empty then prompt a msgbox that tells what part is empty. My attempt was bad and my first time to use select case. [code]
View 9 Repliesi tried to read html contents by striping html tags in a string.when i try to print that string i got - character. how to remove this character?
View 2 RepliesHow do I add a space between every character in a string of text?For example:Change abcdefg"
To "a b c d e f g"I have two text boxes on my form, one for input, the other for output of the re-formatted string.