VS 2010 ArrayList Or String Collection To Hold A Bunch Of Strings?
Dec 18, 2010
Speed is critical in my application. As of now, I'm using an ArrayList to store a list of Strings and I use BinarySearch functionality of ArrayLists to search for an item. Would I be able to do this faster using String Collection and a for loop?
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Mar 20, 2012
I want to create an array of an array (or arraylist of an arraylist) to hold strings.I want to fill an array1 with string values Then add this array to array2. - but only taking up 1 row in array2 e.g something like array2(index)=array1 Then clear array1 then loop through this again with different data, and add it to the array2.so will end up with something like
array2(0)... contains a collection of array1 data
array2(1)... contains a collection of different array1 data
.. and so on
i think i need to make new instances of array1 each loop, but not sure.I dont mind if it uses arrays, or arraylists, or lists, or structure of arrayslists?
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Jan 11, 2012
I have a problem in Treading.I have a code like this;[code].....
I want to change ListBox1 with ArrayList. But I couldn't find how to use adding a string to ArrayList in tread.
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Mar 12, 2010
I am creating an instance of a Generic List collection and I am surprised to find that I can't add more than one value to it at a time. I was thinking there was going to be something like what you can do with arrays, where you can add a group of values to it at creation. I saw the AddRange method, but that seems to add another collection to the end of this collection, which is not what I want. So my code is:
vb
Dim MyList as New List(Of String)
MyList.Add("John")
MyList.Add("Bob")
[Code].....
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Oct 28, 2011
I would like to store references to a bunch of structs in a collection. The general scaffolding looks like this:
Structure myStructType
Dim prop1 as String
Dim prop2 as int
End Structure
[Code]....
now this doesn't work, because it's referencing the same memory. What I would really want is the 'pass reference by value' behaviour that is also used for reference types, so that I can easily keep producing more of them.
Is there any way to fix this other than to make the structs into classes? Is this actually a proper way to use structs, or do I have it all wrong?
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Nov 29, 2011
I like to create a Structure that could hold 'Yes' or 'No' only; just like a Boolean variable could hold True or False.
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Jun 3, 2012
I'm attempting to create a small app that allows a teacher to input 5 students with 5 test scores each. I need to create arrays of strings to hold the five students names, an array of five strings to hold each student�s letter grade, and five arrays of five single precision numbers to hold each students set of test scores.
[Code]...
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May 6, 2010
I have an arraylist (arrFirstArry) which I use to populate another arraylist (arrNoDuplicates) preventing any duplicates from being added. This works fine. What I would also like my code to do is prevent adding any partial values which may exist from being added. i.e. my array is like this
[Code]...
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Mar 7, 2009
If I want to store a list of names ie. "David", "Frank", "Chris", would it be better to do:
[Code]...
Also, what is the difference if you put the () with the variable name or with the type? I see sometimes
[Code]...
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Jan 6, 2009
I'm having trouble using an arraylist with an object. [code] The arraylist Phrase gets populated with 4 objects (WordObject) filled with the word "Fox".The arraylist AnotherPhrase gets populated with strings "The", "Quick", "Brown", "Fox".Why does the Phrase Arraylist do that? Shouldn't there be 4 objects each with different words?
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Dec 22, 2011
I was wondering if there is a way to get an arraylist returned from strings.split as opposed to a 1-D array. I can't seem to find how to do it.
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Mar 6, 2009
the vars outside the procedure
Dim rentalRecords As New ArrayList() ' The arraylist containing the records
Dim carRecords As New ArrayList()
Dim currentRecordIndex As Integer ' The index of the current record
[code]....
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May 27, 2010
I want to get a string between 2 strings using Regex.The the string I have is "<b>hello</b>", now I want to get the string between <b> and </b>. I guess its something like Regex(String, "<b>(.+)</b>" but I'm not sure how to do it. I know there is this function called GetBetween but I guess this is a better way.
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Jan 5, 2011
To create a string of space characters to a given length using the MS VB namespace I used,
Strings.Space(Length)But without the VB namesapce, how do I do the same thing, is it like this?...
String.Empty.PadLeft(Length, " "c)
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Aug 5, 2010
I have a list of strings. For each string in that list, I want to prepend another string. I wrote a method to do it, but I was wondering if there was something already in .NET I could use to do this. It seems like something that could be built in, but I was not able to find anything.
Here is the method I wrote:
Private Function PrependToAllInList(ByRef inputList As List(Of String), ByRef prependString As String) As List(Of String)
Dim returnList As List(Of String) = New List(Of String)
For Each inputString As String In inputList
returnList.Add(String.Format("{0}{1}", prependString, inputString))
[code].....
It works, but I would rather use built in functions whenever possible.
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Dec 22, 2010
I was wondering the best method or code to Sum\total a bunch of cell values of an unbound column in a datagrid to a textbox string. this request is 100% genuine...im not some student trying to get you guys to finish my project, this is purely for educational and personal information for myself. im new to vb.net.
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Apr 19, 2011
I'm using Jmchillney's formless tray application and I want to pass some parameters into it using some other application I have. Then I want the formless tray application to do some work with these inputs. How can I pass into an executable parameters from another executable? I want to send some parameters from Application A to Application B. If app B doesn't exist I want it result in an error message the app A to display an error message. If app B does exist, it will do some work with the parameters and return a result back to app A and that's it.
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Apr 5, 2011
1) Is it possible to set the maximum number of characters that a string can hold?
Just like the following example from VB6:
Dim my_var As String * 10
2) I noticed that Option Base 1 does not exist. I created a table my_table(2) and tried to msgbox the following[code]...
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Feb 17, 2012
I want to save some strings in a Session("myKey") as an ArrayList in my asp.net application.
So I have somthing like that:
Dim s As String = "String1"
If I use
Session("myKey") = s
it is working for the moment.
After PostBack I want to add another string to the session.
If do the same thing again, then i will overwrite my Sessiondata.
So I'm searching for something like this:
Dim s As String = "String1"
TryCast(Session("myKey"), ArrayList).Add(s)
In this case the Sessiondata would be stored correctly, but my code is not correct.
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Jun 4, 2012
So, if this is how to hold a key down for an infinite amount of time:
keybd_event(CByte(Keys.Right), CByte(MapVirtualKey(Keys.Right, 0)), 0, 0)
How can I hold it down for only 1 second?
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Jan 8, 2012
Is there an easy way to find a certain string within a string and then return the strings that you find as an array?I have written this:
Public Function FindStrings(ByVal strSourceString As String, ByVal strStartString As String, ByVal strEndString As String) As String()
Dim StringStartposition As Integer
Dim StringEndPosition As Integer
Dim Currentposition As Integer = 1
[Code]...
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Jan 16, 2011
I have this string called time. It's value is in this format: HH:MM:SS The numbers change, but the format stays the same. I want to separtate the code into 3 strings Hour, Minutes, Seconds.
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Jul 21, 2011
What is the numeric data type that can hold the biggest Integer in VB.NET 2010?
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Mar 4, 2012
I'd like to create a function in my application in Visual basic 2010 that would:Simulate a left-mouse button click+hold and drag with a timer tick eventSet a new XY coordinates for the mouse to drag the item to a new locationRemove the left-mouse button click+hold command
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Apr 4, 2012
I have a vb.net project that has 2 exe's that get built as well as the installer. The two exe's share a bunch of common files. I do not want to have two copies of the common files or mess around with having build events that copy things around (if possible).
My method was to create two projects in the same folder and have them point to the files they needed. This appeared to work until I tried to compile both apps at which point I get an error in a file called Application. Designer.vb. It seems that project files create this file in their folder and when I have two solutions in the same folder they conflict. So my next effort was to create the second project in it's own folder and just add the items as needed. The problem here is that VS2010 doesn't hold a link to a file in a different folder it copies the file to the new project folder. What is the vs2010 way to get this done?
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Mar 15, 2011
How could I declare an arraylist as strong typed arraylist of Strings I have tried this code
Dim newAr As ArrayList(Of String)
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Nov 11, 2011
i am try to get the items i add to an arraylist (DHHNoneSystemMerger) back to string but with the code i have below i get the out "System.Collections.ArrayList" instead of the items that i added. My Code:
Module WorkingWithTheFiles
Public DHHNoneSystemMerger As New ArrayList
Public DHHSystemMerger As New ArrayList
[Code].....
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Jun 1, 2010
I'm trying to use an arraylist as the parameter to String.Format.
msg = msg & String.Format("<td>{0}</td>" & _
"<td>{1}</td>" & _
"<td>{2}</td>" & _ [code].....
But this code throws a FormatException
Index (zero based) must be greater than or equal to zero and less than the size of the argument list.Am I wrong that it's possible to use an arraylist?
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Jun 10, 2010
I have an ArrayList, and i wish to search it for a specific part of a string. Like the InStr() function.I can only find the WHOLE string. The ArrayList has strings like "This=Is A String", so if i do a check with ArrayList.Contains. It will only search for the whole string, and not something IN the string. Perhaps i need something like Starts With .
Code:
dim wordArr as New ArrayList
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
If wordArr.Contains(TextBox1.Text) Then
[code]....
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Mar 11, 2009
my problem is in subject can u please give me a easy way to do it?
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