I am trying to check if a users input contains any special characters from a list, does anyone know who I would go about doing this?
I've tried the LIKE operator:
Dim sMatch As Boolean = tTitle.Text Like "[-/,.:;*?""""<>|&'[]^%£$()_+=!#]"
but doesn't seem to work, i think special characters are used for settings.
Is there a RegEx i could use for this??
How would I check a given string for the presence of any match with a character listed in another string. I'm just looking for a binary result.
In other words, how would I write the VB.NET function called IsPresent in the following code snippet?
Result = IsPresent(AnyString, MyTestString)
For example, if MyTestString = "XYZ" then I want the following results for the given AnyString values:
MUTTON, Result = No
BUZZ, Result = Yes
HAPPY, Result = Yes
FISH, Result = No
[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.
the 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 Repliesbasically i have Three messages in an array Private MyArry() As String = {"This is Message one", "This is Message Two", "This is Message Three"}
I want to compare it agasint a string which is a web sites page source.If it contains one of three messages return true.
I have a form like this
And its code :
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
If TextBox1.Text.Contains(" ") Then
[Code].....
Now what code should I use when I click the button, if TextBox1 contains 2 SPACE characters, it will split into 3 parts, but if it contains only one SPACE, it'll split into 2 parts ?
How can I check if a StringBuilder contains a certain character or string? There is no Contains method like the string class has.
View 8 RepliesI want to user to enter only numbers and characters in textbox i.e no special charaters.I don't want to use key press event of textbox.As i need same validation in gridview.
So i want to validate whole string.
My form has a texbox where user enters an ID. IDmust be4 chracters in length andof the form: begins with either "E" or "e" and the next 3 chracters cannot be "all characters".
Example:
E102 - corect
e3ff - correct
[code].....
dim l as List(of MyClass) = new List(of MyClass) and I want to get the type of the objects contained in the list, how do I do that? The obvious answer, that doesn't seem to be possible from my actual implementation, would be to do something like this...
public function GetType(byval AList as IList(of GenericType)) as System.Type
dim lResult as system.type = nothing
if AList.Count > 0 then lResult = AList(0).GetType
return lResult
end function
But what if the list is empty and I still want to know the type it contains?
I'm having kind of a hard time about this, just would like to ask if anyone knows how to check if a string that is input by the user in a text of combo box is in the list of the combo box?
View 2 RepliesI have a question that I really hope someone can shed some light on for me, as this is driving me crazy trying to figure this out. Consider this code..
'declare and allocate
Dim lstNumbers As New List(Of Integer)
Dim nCount As Integer
[code]....
I am trying to display a list of databases contained in sqlexpress, in a listview. my current code reads:
[Code]...
This will show up as column headers, but I can't get them to show in only one column so that I can have the user select the database that they would like to work with.
I want to know if a string exists in the list of array ignoring case sensitivity
I have the following code working for my requirement, but its checking case sensitivity. How can use it ignoring case sensitivity...?
Dim SrtList() As String = {"abc","qwe","zxc"}
Dim chkStr As String = "abc"
If strList.contains(chkStr) Then
[Code]....
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 RepliesI keep getting the error " Object reference not set to an instance of an object." in relation to the line : selA = CType(lstStudents.Items(r.Index), String)
[Code]...
am trying trying to write some code for a ComboBox that does the following:
1. Allow the user to enter text into the combo box to type entries contained in the list source.
2. Enable autocomplete to assist the user in selecting entries in the list source, both from dropped down state and non dropped down state.
3. Restrict the user from typing an entry that doesn't exist in the list source.
My requirements are:
1. The ComboBox must run some code after a selection has been made or the user has finished typing an entry (not after the focus has been moved to another control)
2. The code must only run once after the user has made a selection from the combobox or has finished typing an entry
The problem: To achieve the above functionality, I had to run code on numerous event's. Sureley there is a better way, here are the events and the reason for the code:
SelectedIndexChanged:This is the code that is run when the user makes a selection. No Mystery here
KeyDown:
Must Run
If e.KeyCode = Keys.Return Then
ComboBox1_SelectedIndexChanged(Nothing, Nothing)
End If
If we have a string that contains for example "01_1A" in ascii, I would like to take first two chars and following two chars after mark and send it as hex format, like &H1 and &H1A.
Note that I would not convert ascii to hex. I am asking for something like &H(var).
I'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].....
I want the Function to accept List(Of String), Array & String and similarly return List(Of String), Array & String respectively. The Function simply adds a string (month) to the input collection. I just want to use it for string, array and list with needing to think of conversions.
[Code]...
I have a streamreader that is reading a file that has the possibility of having the contained information being separated by either a space, a semicolon or a comma, or even a page break.How can I check for all those things and then place them in a array?'I know this is the way to check for one character, how do I add on to this?
arrDataHolder = txtDocument.Split(CChar(","))
I need to check if a character is a valid Key (type) in VB.NET (I need to turn "K" into Keys.K, for example). I am currently doing this to convert it:
Keys.Parse(GetType(Keys), key, False)
Sometimes when backing up an sql file using phpmyadmin (database stuff), for some reason it forgets to double up a single quote, resulting in an error when loading the sql file back into the database when required. A line in such an sql file looks like this;[code]As shown in the example, phpmyadmin did double up the quote in "you're" as it should, but it forgot to double up the one after "27", resulting in an error.As you can see it's like this (*value*, *'value'*, (and so on) but beforehand I can;
A) Never know how many values are in such a string
B) Can't simply split the values by "," because the value itself can hold a comma aswel.
It would be easy if every value was like this; *'value'* because then I could split by " ', ' " but that's not the case, and I also never know what location the values not enclosed in single quotes are. I also can't simply double up all single quotes in the entire string because then it will also double up the ones that are enclosing the values, resulting in an error during upload again.So yeah, what I need to get done is single out all the values with regex ($1, $2 etc.) and then string.replace single quotes in those values but *only* if said single quote is not preceeded or followed by another single quote, else it would become a tripple quote resulting in an error again.
How to check the Single byte character (e.g. English) and Double bytes character(e.g. Chinese) ?
Since I want to printing out their code which are representing in Hex.
However, Single byte character is using 2 digits of Hex. And Double bytes character is using 4 digits of Hex.
So, how can I check them and output with more readable pattern ?
input likes: 微軟 Microsoft output likes: B74C B36E 4D 69 63 72 6F 73 6F 66 74
Is there a way I can check the place of the character in a line or string? For example: I want them to guess 1214 So how would I make sure each character is in the right place?
View 2 RepliesI 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)
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
View 2 RepliesA couple of questions about check list boxes:
How to check/decheck all the item in the list How do you copy or delete all checked items in the list
I got an object of List<List<string>>I need to bring this into a ist<string>I have no idea how to do this with LINQ.
View 1 RepliesIs it possible to have a Radio button list, like we have a checked List box?Actually I want to load all the options from database to the list but do not want user to allow to check more than one item.
Also how to read it (say item 4 of the list) I want to store its value in the variable.