VS 2008 Using List Of Strings Or Array Of Strings?

Oct 16, 2009

I'm migrating from VB6 to VB.NET, in hence my questions below:

I have to write a function that returns array of strings.

How can I initiate it to empty array? I need it since I have to check if it's empty array after it returns from this function.

Is list of arrays better for this purpose? If I use a list - Is it empty when it firstly defined? How can I check it it's empty?

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Way To Concatenate List Of Strings Into A Comma-separated Strings, Where Strings Are Members Of An Object?

Oct 16, 2009

Say I have a List(Of Tag) with Tag being an object. One member of Tag, Tag.Description, is a string, and I want to make a comma-separated concatenation of the Description members.Is there an easier way to do this than to read the Description members into a List(Of String) and then use the Join function?

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Prepend A String To All Strings In A List Of Strings?

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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Grab Some Strings From A List Box And Put Them In An Array

Jun 8, 2011

Ok so what i'm trying to do is grab some strings from a list box and put them in an array so i can list them in a message box each index of the array on a new line

So it comes up like this

you ordered :
arrayindex1
arrayindex2
arrayindex3 and so on

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How To Extract The Strings Out Of An Array Of Strings

Jun 24, 2011

Dim str As String
Dim str2 As Array
str = "blabla duhduh"
str2 = str.Split(" ")

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VS 2008 Send An Object Instead Of Strings Which Includes Multiple Unsigned Integers And Strings

Aug 13, 2009

I am working on a UDP Client/Server, and currently i have them sending back and forth strings, which i convert to bytes, and then open the bytes to read. I want to now send an Object instead of those strings, which includes multiple unsigned integers and strings.

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Ruby Re-create Such List (as An Array) With Such Elements (they Will Be Strings, Booleans And Integers)?

Apr 4, 2011

How would I create a list of elements in VB.NET, save it to a .dat file, and make Ruby re-create such list (as an array) with such elements (they will be strings, booleans and integers)?

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VS 2008 Declaring 5 Strings Vs. One Array?

Aug 28, 2009

If I were to execute five different SQL-commands, wich of these way would be the best/most effecient?

Dim sql(4) As String
sql(0) = "SQL-string 1"
sql(1) = "SQL-string 2"
sql(2) = "SQL-string 3"
sql(3) = "SQL-string 4"
sql(4) = "SQL-string 5"

[Code]...

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Converting A User Generated List Box To An Array And Then Generating A User Defined Number Of Random Strings And Placing It In A Textbox?

Apr 28, 2007

I'm converting a user generated list box to an array and then generating a user defined number of random strings and placing it in a textbox.The code I have works fine as it will generate the number of random strings the user wants, except sometimes a line is blank at the top of the list but is counted as a string.

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Find Strings Inside Strings?

Aug 15, 2011

I have been looking for examples to find the string between two strings. This top one works fine;

Public Sub ReadData(ByRef keywordStart As String, ByRef keywordEnd As String, ByVal filename As String)
Using reader = New StreamReader(filename)

[Code].....

Now the first one is fine - Ext_Volume is result of the string between the strings <Volume> and </Volume>. <Volume> and </Volume> are unique so this is straight forward.

However the second one - "^FDExp:" is unique, but "^FS" is not unique. There are occurances of "^FS" before and after "^FDExp:".

How do I get the string to search AFTER the occurrence, not before etc?

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Use Regular Expression To Get Strings Between 2 Strings?

Apr 6, 2012

Say the string is something like

bla bla bla bla (cat) bladfdskdfd dsgdsdksf (dog)
dfdshfdskdskfsdfkhsdf sdkfhdsfkdf (kathy) fdsfhdskfhdsfkd (doggy)

I want a generic.list (of string) containing

cat
dog
kathy
doggy

How to do that with regular expression in vb.net

Later I want to do something more complicated like getting all strings between "url":" and ", from this strings

[Code].....

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VS 2010 Finding Strings Within Strings?

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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VS 2010 Separate Strings Into Other Strings?

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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C# - Getting Hash Of A List Of Strings?

Mar 21, 2009

I would like to write a function GetHashCodeOfList() which returns a hashcode of a list of strings regardless of order. Given 2 lists with the same strings should return the same hashcode.

ArrayList list1 = new ArrayList()
list1.Add("String1");
list1.Add("String2");

[Code].....

I can first sort the list, then combine the sorted list into 1 long string and then call GetHashCode(). However sorting is a slow operation. I can get the hash of each individual string (by calling string.GetHashCode()) in the list, then multiplying all hashes and calling Mod UInt32.MaxValue. For Example: "String1".GetHashCode() * "String2".GetHashCode * ... MOD UInt32.MaxValue. But this results in a number overflow.

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DataGridView - Convert Nulls To Empty Strings And Display It In The Grid As Empty Strings

May 14, 2009

I have a DataGridView that has some columns with dates. It binds to an in-memory Datatable which gets loaded from an string array of data passed back from the backend Some of the rows returned have nulls for the date columns. Solution 1: If I define the Date column in the DataTable as "string" I can easily convert those nulls to empty strings and display it in the grid as empty strings (desired results). However, if the user clicks on the date column header to sort by date, it doesn't order the rows as you want. You get a purely string sort order. Not acceptable

[Code]...

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ArrayList Vs Array Of Strings?

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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Editing Strings In An Array

Mar 21, 2012

ok so i have a .txt file that is a log of events. they pretty much follow this format:

[Code]...

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Init Array Of Strings?

Jun 8, 2011

The problem I'm having is that it seems like strings have to be initialized differently than other types and I don't know what I'm doing wrong.

Public Class Class1
Private intNum() As Integer
Private dateString() As String

[code].....

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Join An Array Of Strings?

Dec 25, 2009

What's the easiest way to join an array of strings?

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Load Strings Into Array?

May 30, 2009

Why does the following not work below? I get an error on the first bracket "{" saying "Expression Expected"[code]...

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Sorting An Array Of Strings?

Jan 13, 2011

Is there a way to sort an array in VB that would put J10 and J11 after J9?

J1 (PN= 605848)
J10 (PN= 605987)
J11 (PN= 605987)

[code].....

This is what I get after I run myArray.sort()

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Sorting Through Strings In Array?

Mar 31, 2012

Each array string represents a text file in a folder. I want the array to be sorted based on what the text file contains. How would I do that?

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Way To Clear An Array Of Strings?

Apr 3, 2009

What is the best way to clear an array of strings?

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VS 2008 Sort Array - Most Repeated Strings At The Start And The Least Repeated At The End

Aug 1, 2009

I need to sort an array. I need the most repeated strings at the start and the least repeated at the end. Any easy way to do this? My brain is currently fried

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Choose The Same Strings From Two List (Of String)?

Feb 24, 2012

I have two List(Of String).Both Lists contain duplicate strings. I want to pick out all the strings which are contained in both the Lists. For example:

List1 ={"10X100","10X100","10X100","50X100","50X100","100X100"}
List2 ={"10X100","10X100","20X100","50X100","50X100","100X100","200X100"}

So, the result should be: List3={"10X100","10X100","50X100","50X100","100X100"}.How to do this?

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List.Sort Not Quite Working With Strings?

Feb 13, 2011

This is my first time posting here although I have been lurking for quite some time. I'm stuck with a problem I have seen before and never solved: I have a long list (~23,000) of alphanumeric strings that I'm reading into a List(of String) from a text file, and then sorting. When I iterate through the list after sorting, it appears to be correctly sorted EXCEPT that the element that was originally at the beginning of the list is now at the end (and it should be somewhere in the middle after the sort)Here is a sample input:

PRE1-PRE2_00015648
PRE1-PRE2_00015649
PRE1-PRE2_00015650

[code].....

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Populate A List Of Strings From A DataTable?

Apr 12, 2011

I'm trying to populate a List with a column of a DataTable in order to later convert it to a AutoCompleteStringCollection later. Is there a neater way to do it than the "good old" For Each?

Is there a way to use myDataTable.Rows.CopyTo for this task?

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Remove Last Seven Characters From List Of Strings?

Mar 11, 2010

So I've got a list of strings in ListBox1 and I want to remove the last seven characters from each string in the list and write the output to an excel file...

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Replace Words From One List Of Strings With Another?

Apr 27, 2010

The code below replaces if it finds a given string from the list of contractions with its equivelant from the list of word-contractions. E.g., if it finds 'll it will replace it with Will. The code words but whtn it comes to let's it will replace it with let is.

'remove panctuation and contractions first
Dim contractions As List(Of String) = New List(Of String)(New String() _
{"'ll", "'re", "'ve", "'m", "'d", "'s", "n't", "won't", "lets", "let's", "ikon of elkomenos", "ikon of crucifixion", "ikon of crist elkomenos", "Part A", "Part B", "renaissance style", "hagios nikolaos", "full wall fortification"})

[code]....

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Use A Function To Return A List Of Strings?

Oct 5, 2011

Update: I didn't make it clear but I meant this to be a question about where/how I would use a function to return a list of strings when I'm trying to just work with classes.I have a class called Account.

I have data access class called AccountDAO.I have various functions that return lists of objects like GetAllAccounts, GetAccountByID etc.I want to populate a drop down list with just the account names and nothing else. It's proving rather slow when using lists of objects and databinding them to the dropdownlist.

I feel like I should be using a simple "Select Account_Name From blah" type statement and returning a list of strings but I don't know how to work this into my class and data access class.

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