I'm working on a class that creates a communication between multiple computers. When a client connects he has an ID which is a string.Now I need to show the user ID in a text box and write "SomeUser Connected!" (Replace SomeUser with the ID), this is the sub[code]...
View 5 RepliesReading [URL] made me wonder whether the comments in there did apply to Strings in terms of performance. Since strings are copied before being passed, isn't it much more efficient (if the callee doesn't need a copy of string course) to pass strings ByRef?
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So strings are reference types right? My understanding is a reference to the string in the heap is passed even when you pass the string ByVal to a method.
String myTestValue = "NotModified";
TestMethod(myTestValue);
System.Diagnostics.Debug.Write(myTestValue); /* myTestValue = "NotModified" WTF? *[code].....
And what is going on under the hood? I would have bet my life that the value would have changed....
<script runat ="server" >
Dim objDT As New System.Data.DataTable
Dim objDR As System.Data.DataRow
[code]......
Public Sub saveExcelFile(ByVal FileName As String)Dim Excel As Object
[Code]...
that is my code. everytime i open the saved file, it says that it has a different file type and asks me if i want to continue opening it and i click yes. the data inside the excel file is only the word "Success"
I know strings are immutable, so the minute you change a string reference's value .NET makes a brand new string on the heap. But what if you don't change the value of a string reference; rather, you simply pass it into a function ByVal -- does this operation copy the string value on the heap as well? My inclination is "no," but I'd like to confirm.
For example:
Public Function IsStringHello(ByVal test As String) As Boolean
Return (String.Compare(test, "Hello") = 0)
End Function
Calling program:
Dim myWord as String = "Blah"
Dim matchesHello as Boolean = IsStringHello(myWord)
I know passing myWord by value makes a copy of the reference to "Blah", but since I have not tried to change the string itself, would it make another copy of the string on the heap?
Private Sub TextBox1_TextChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles TextBox1.TextChanged
Textbox1 how the text box by real-time data monitoring?
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.
ManagmentObject is not recognized!!! Help me!
Imports System.Management
Imports System.Management.Instrumentation
Public Class Form1
Public Function GetHDDFreeSpace(ByVal drive As String) As Double
If drive = "" OrElse drive Is Nothing Then
drive = "C"
End If
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I've got question. I created this;
Public Overloads Sub AddTextLeft(ByVal Text As String, ByVal Fontsize As Decimal, ByVal Bold As Boolean)<br/>
'-- PBA / 22.08.2006<br/>
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I'm making this program that opens the same forder in every pc but it identifies the pc name to do it.
Public Class cv7import Private Sub cv7import_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
[Code]...
but I want it to do it with the pc's name and I'm not sure how the environment.systemdirectory works, or even if it's the right one to use. Is it the right thing to use or is there a better solution.
Just as a secondary question, usually I reduce: -(ByVal sender As System.Object, ByVal e As System.EventArgs) to just () for most occurrences of auto-generated subroutines. Is there any harm in doing this? I cant see any reduction in performance but do get more readability.
View 8 RepliesSay 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?
View 2 RepliesI have a large piece of text in which there is something simular to this:!#_KT_#!COMMANDHERE!#_KT_#!I want, in VB.Net, to get the 'COMMANDHERE' part of the string, how would I go about doing this? I have this so far:
Dim temp As String = WebBrowser1.Document.Body.ToString
Dim startIndex As Integer = temp.IndexOf("!#__KT__#!") + 1
Dim endIndex As Integer = temp.IndexOf("!#__KT__#!", startIndex)
[code]....
I am trying to take one string that is too long for it's container, so it wraps, and break the string at the wrap into two strings. So say I have this string
"this is a
string"
I would like to make this into: "this is a" - "string", two different strings. But I will not know where the break is..
How do I CONT the words seperated by commas in a string. [code] But how would i get the count, i DONT want the actual text
View 10 RepliesI must input a letter and a number in a text box.. say "A14", and them I want to cut the string into "A" and "14" and then use these, but I do not know how to code this as the next string could be "A1" or "C110" and these change... could I make an if for each one? like an if for when its 2 characters and just cut it in half and then an if when its 3 characters and cut between the 1st and second and so on?
View 4 Replies
How can I find a string between two known strings like:
name=login value=12345 />
Now I need to get the string/the numbers between name=login value= and />
It's from a webpage so it has multiple lines.
I have a string in which if the string "<error" appears (as part of a larger string which would look something like this
" <error code="200">Current security level not high enough.</error>"), it finds what the code equals (in this case 200) and the message which appears between the pointy brackets (in this case "Current security level not high enough.").[code]...
I am trying to take a value from an html file. I know what code will be around the value. So I want to split the html doc with these values so I can get the value between them.
For example:
<h4>Availability</h4>
<p>
<b>Availability</b>: VALUE IS HERE <br />
</p>
[Code]....
I have a string, and I want to search it for multiple strings, which I basically want to use for searching for urls in an HTML file that's been loaded into a string.
so get the value of everything between
href="http:// and the next " and return it (I want to check each one separately and do different things with them, so maybe add them to an array that I can loop through?)
preferably simple short code than highly functioning code
I am working on a project and have a problem Suppose I have this text in a string, "timvisee, hi, this is some text"How should I schijden this text in two different strings.In the first string, I would like the name, that is' timvisee "in the second string should" hi, this is some text "will be shown.But the name (timvisee) may change.Also what the thing behind the name is changed to Deren. Only remains always between the name and the text are the following I hope it is clear what I mean.
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I have written a function to get a string between 2 other strings but at the moment it is still returning the first part of the string and simply removing anything after the EndSearch value:
Public Function GetStringBetween(ByVal Haystack As String, ByVal StartSearch As String, ByVal EndSearch As String) As String
If InStr(Haystack, StartSearch) < 1 Then Return False
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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?
for example i have two strings 0000 and 0001 then
0000
0001
----
result= 000- here difference is indicated by - sign
This i what i have so far:
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I want to separate a two word string into two different strings
View 2 RepliesI 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.
View 9 RepliesI read a line from a text file with text as "ABC.txt", "XYZ.txt", "TEST.txt".I use code file = sr.ReadLine(); to assign the text to variable file. Now I want to initiate a string array likestring[] FileNames = {file}; it doesn't work. What should I do?
View 2 RepliesHow do i re- arrange the 3 strings into 1 string into a new text file?
what i have in the text file:
VERSION 600
LIBRARY [2009/6/15 15:02:14, 2009/6/15 15:02:14] temp.gds
UNITS 0.001 1e-009
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