Validate The Contents Of A MaskTextBox With Contents From An Array Or List?
May 10, 2011
I am trying to create a code where I placed sets of numbers in an array.I'll use a masktextbox to have the user enter the numbers to match what's in the array. If the user enters the number, ex: social, and the data is correct (matches the numbers in the array), something happens if the number entered in the masktextbox does not match any of the number sets in an array then another thing happens.The masktextbox so far only validates format and gets number only, however, I want the number entered to match whats in the array.
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Nov 11, 2010
i have an array of booleans whose current boolean values I want to preserve but add additional length to the array? How can I achieve that? My code looks like this:
Dim Array() As Boolean
Dim ArrayInterimShort() As Boolean
ReDim Array(119)
[code]....
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Dec 4, 2010
I'm a sorta newcomer to visual basic and programming in general and I'm having a hell of a time trying to figure out how to put a listbox into an array. And just so we don't make any assumptions yes this is for school and no I'm not looking for anyone to do my homework for me. I just need some direction on how to do this step so I can make progress.
Anyway, the program is a data of students and I gotta do the code for alphabetically sorting by last name in ascending and descending order. I have to make it so whenever the A-Z button is pressed it will sort whatever is in the listbox, be it 1 record or all.[code]...
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Oct 3, 2011
I'm trying to loop through an array of byte and copy the contents to a new list of bytes, and display them back. see the code below.
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim myByte() As Byte = New Byte() {65, 66, 67}
[Code]....
I want to see str1 as "ABC" but the out put i get is "A B C" (ie with spaces between letters) note: I have to copy(chunks) within a loop and get the result at the end, this is just a sample to reproduce my real issue.
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Dec 15, 2011
How to validate the contents of a datagrid per row, per column in vb.net?i have a specific coloumn PlotNo in which values shld nt get repeated..it is an unbound table..
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Feb 16, 2011
Am learning arrays at the moment and I have the below piece of code that goes through drive C: and displays the files in in a list box.
I want to try and expand it to use array.sort so that it gets the files, puts them into an array, and then I can sort by filename or file size. I have been rattling my brain over this - as to how do I put the files into an array.
Would like an explanation if possible as more interested in learning it rather than the answer.
Private Sub btnclick_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnclick.Click
Call Clearlist()
[Code]....
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Jan 20, 2012
The problem with this code is that I can't list the contents for subfolders for example example /test but it work fine under root folder /.I have used the Ftp.Listdirectory component, which seems only work for root folder /.The coding language is Visual Basic 2010 Express.
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Feb 21, 2011
my form contains 4 list box and also the every list box contains the data. now i have to print the data of all the list box. how i can print the all the contents of the list box. for one list box i have succeeded to print the data but for more than one list box i tried a lot but couldn't print the data of the listbox.
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Feb 24, 2009
I am getting an error that I can't track down.
Elsewhere in the project:
Public teamname (numteams) as string.
In this form as a form load event
For i = 1 to numteams
Listbox1.items.add (teamname(I))
next i
I get an error message to try new but I can't figure out what it means.
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Dec 7, 2009
I am having a hard time displaying the contents of a text file that i read into an array. I read the text of the text file into an array but then i need to display it but i can't seem to get it. I also need to create a criteria to match whatever letter is entered into the textbox and display the contents of the file only beginning with that letter. I know i have to use a substring to read only the first letter but I can't even display the contents of the file from out of the array. Here is what i have so far.
Dim sr As IO.StreamReader = IO.File.OpenText("CRAYONS.TXT")
Dim color(50) As String
Dim arrynum As Integer
[Code].....
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Sep 6, 2011
I've got an array of type double with about 30 entries(numbers) in it.I need to multiply them all together. Sort of like "=product(A1:A30)" in Excel (formula).
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Jul 6, 2009
What is the best way to print contents of an array?[code]...
Is there a way to have a loop that finds the columns and then prints the contents?
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Feb 16, 2011
Am learning arrays at the moment and I have the below piece of code that goes through drive C: and displays the files in in a list box.
I want to try and expand it to use array.sort so that it gets the files, puts them into an array, and then I can sort by filename or file size. I have been rattling my brain over this - as to how do I put the files into an array.
Private Sub btnclick_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnclick.Click
Call Clearlist()
[Code]....
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Jan 15, 2012
I have 4 string lists as follows
Dim input_list As New List(Of String) Dim input_POS As New List(Of String) Dim trigger_list As New List(Of String) Dim trigger_POS As New List(Of String)
I want to compare the contents of the input list (containing words (e.g., want, the) etc. to the ones of the trigger list (containign again words) and if a same entry (i.e. word) get the POS for both input word and trigger word from the relevant lists and put them into a property list. For example
input list (want, the, right)trigger list(want, there, wait)input list POS (verb, article, adjective)trigger list POS (verb, pronoun, verb)
Output property list (want:verb, want:verb) (only want is common between input and trigger list). Then I need to conduct a test between the two property items for similarites. If they are exactly the same, the code should output a confirmation "i.e., Yes" into a textbox. If not the code should output a "No" plus the contents of the property list into a textbox.
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Apr 2, 2010
I'm working on a program that has to get a set of images and then scan them to find pixels that match colors in an color array. Anyway I think I got everything working but how to load the images in as bitmaps. See the images are dynamic, they change there filenames so I can't call them with a static call like Dim bmp2 As New Bitmap("c:button.gif").
So I am using a loop to feed the images into an array for bitmap but thats not working, anyway that I can do this as, right now the program gets all the filenames for the images from a text file that is sent in to us. All I need to do is have the program check each image for pixels that match our color list. But I cant get the images into the bitmap array.
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Feb 26, 2009
I am having a hell of a time figuring out where I am going wrong in copying the contents of arrays to listboxes.
I am using textboxes to input team numbers and team names.
The code for that is as follows (used in a button after the data has been entered in the text boxes:
Teamname, Teamnumber and numteams have been previously declared as public variables (string,integer and integer) in a module as they are used throughout the project. Numteams has had a value ascribed to it in a previous form
ReDim Teamname(Numteams)
ReDim Teamnumber(Numteams)
Dim thisteam As Integer
[Code]....
I have had to put in the "" for the Teamname variable as otherwise I was getting an error saying "Value cannot be null". I am also not sure what is causing that.
When I do that, I get 0 in the listboxes for all the teamnumbers except the last one which is right and blank strings for the team names except for the last one which is also right.
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Apr 20, 2010
I have an array of info with each element containing a structured variable. Once the array is full of info it is passed to a procedure "DisplayStructure" which I'm trying to get display a MessageBox with the info in it, separating each element on a separate line. I can't get it to display even one element on one line. The structure is called Employee and what comes up in the MessageBox is Employee.Example or Example.Employee, can't remember which.[code]...
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Oct 23, 2010
in VB 2010 how do I display the contents of a 2 dimensiomal array. As a VB6'er, I miss the flex grid control and I can't seem to adapt to the Data Grid view for displaying array data.
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Nov 8, 2011
I'm trying to teach myself arrays as I have not extensively worked them. So I thought of a basic program to hash the contents of an array and list the output of the array word next to the hash value of it.
[Code]...
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Oct 28, 2009
I have this:
Dim split As String() = temp_string.Split(",")
''#feed all info into global variables
patient_id = split(0)
doc_name = split(1)
lot__no = split(2)
patient_name = split(3)
How do I clear all the contents of split() ?
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Mar 14, 2011
In Mastering VB2010 on arrays, a command is show indicating the reversed contents of an array can be assigned to another array.
ReversedArray = System.Array.Reverse(ArrayName)
I can't get this to work and part of the problem is how to set up (dim) the ReversedArray. When I enter this I get a squiggly line under the right side of the equation and an error message saying no data is produced by the expression.
I get the same error with a copy command:
CopiedName = System.Array.Copy(Name, CopiedName, 10)
How do I set up working code to reverse or copy the contents of an array?
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May 18, 2012
I'm trying to do something quite simple. I need to take a pipe-delimited text file and store the contents of the file in an array.
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Feb 6, 2009
I have a 1-dimensional array that is essentially is written to a csv file. My problem is that after I have loaded the entire array...I wish to write it to the csv file and I'm not sure how to set it up.[code]...
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Jan 6, 2011
How can this be done? The .InnerText Property (when used on the containing div element) is giving me the html only. Is it possible to iterate through all the li elements contained and extract their values?
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May 12, 2011
I have a pair of dropdown lists, they are linked in the sense that in it is basically a 2-d array. I have a list of accounts, and a list of domains for each account. So based on which account the user selects from the dropdown, I need to populate the domain list with the appropriate selections. Is there a way I can do this without [code]...
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Apr 21, 2010
I understand I've been asking alot of similar questions around this topic, but I think, with luck, and your help, this will be the last time.
I have a listbox containing x-many different values.
What I want the program to do is to overwrite a pre existing file with all these values,
that is, essentially, to do the reverse of this piece of [code]...
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Oct 22, 2009
how to create a list of the contents of a folder (T:ENERGY) using *.pdf as the filter. Also could this be adapted to read folders names and place that into a string ";" delimited to be called upon and modify T:ENERGY)?
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Aug 15, 2011
I have searched google and youtube for a tut on this but cant seem to find any :/I have a script that adds contents of textbox1 ans textbox2 to a online mysql database like username and and password.All this works perfect What i now need is to display the contents of the given database in a listbox or something.How would i go about this or is there any good tuts on this, all i seem to find is tuts using ms database not mysql
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Jun 10, 2012
I have a data bound listview which I wish to retrieve the select items values I am able to get the value in the debugger by using this code but can't work out how to get the item values out of lbi. How do you do this
Dim lbi
As ListBoxItem = VehicleList.ItemContainerGenerator.ContainerFromItem(VehicleList.SelectedItem)
[code].....
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Jan 30, 2010
Im using visual basic 2009, im trying to wrtite the contents of a text file to a list box, im using the following format technique
{0, -5}{1, -20}{2, -20}{3, -5}{4, -5}{5, -5}{6, -5}{7, -20}
i have used a similar format in vb6 where it worked, but in .net it doesnt get me anywhere, does anyone have experience of using string format in vb.net and can help me? =]
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