Difference Between My.Computer.FileSystem.WriteAllText Method And The IO.StreamWriter Method?
Jun 2, 2011I just need to know what is the slight difference between them so I know which one to use everytime.
View 5 RepliesI just need to know what is the slight difference between them so I know which one to use everytime.
View 5 RepliesI'm using the My.Computer.FileSystem.WriteAllText function to write to a file in a VBA macro for an Access database, but when I try to run the macro, it highlights the "My" in My.Computer and gives me an error saying variable not defined.
View 1 Repliesif they choose to use a networked version of my software, I will need the main server doing the authenticating. This is a problem, because from what I understand, it is quite easy to clone MAC addresses. I have looked into using the CPU ID and the HDD ID, but those are not unique, well at least I don't think so. Reason why I say they are not unique is because someone has the exact same CPU ID as me, and the HDD ID changes from partition to partition (same drive). Maybe the HDD ID is a partition ID instead? Anyways, I was thinking maybe I could get the Physical serial number of both the HDD and CPU, but I have not been able to find anything yet.
View 2 RepliesWe have a network share that is used for transferring files between users on a daily basis. Every day at 3:00 am we run a vb6 program to clear the directory of this network share.
View 1 RepliesThere is a lot of duplication of functions in the My.Computer.FileSystem and System.IO.File namespaces.
So what exactly is the difference between: My.Computer.FileSystem.CopyFile(strSource, strDest, True)
and:System.IO.File.Copy(strSource, strDest, True)
Is there a performance difference? What is everyone's opinion on which which has the edge on read-ability? I personally use the My.Computer Namespace but that is just habit now.
What are the differences between these two methods that appear to carry out exactly the same function?
Is there guidance to say which should be used or are there conditions when you may use either?
I have a problem when writing some text to txt files.Here is my My.Computer.FileSystem.WriteAllText("test.txt", tekst, False)where tekst is a string variable.
When opened in some HEX editor, test.txt begins with 3 unwanted characters - ASCII values: EF BB BF. Notepad isn't showing them.
VB 2005 now offers different methods to write/read a file, such as the File.WriteAllText, the My.Computer.FileSystem.WriteAllText and the StreamWriter.Can anybody explain when is it better to use which method, which one is more efficient in term of memory/processor use and performance time?
View 7 RepliesConsider a MyForm class that contains a shadowed implementation of Show(). It also contains a CreateForm() method, which accepts an instance of the form and calls the shadowed sub:
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What's the difference between using the in out attributes in a interop method call such as SomeWIN32APICall(<[In],Out> Byval SomeVariable as SomeType) Vs SomeWin32APICall(ByRef SomeVariable as SomeType)? When I use the latter my app crashes.Edit: Fixed Typo
View 1 RepliesDo you really need this keyword to overload methods? What is the difference between using the overloads keyword vs. just having different method signatures?
View 5 RepliesI do have my program running in a network. I have set one main computer as server and installed database system too. My other clients create transaction and saves it to database. Now I need to add date and time of server too in that record
View 1 RepliesI am using the Environ() Method to get the computer name. I have a customer in china where that call is return a non-ascii string (due to language selection I suspect).
I am expecting the method to return an ascii scring but am getting "��=�923c9".
how I can get/convert this to an ascii string?
Does calling the Dispose method on a Windows.Forms.Timer call it's Stop method? Or should I stop the timer before I dispose it?
View 5 RepliesI have a large problem with inheritance in vb.net. The problem is the following:
I have 2 forms => frmBase and frmChild
In frmBase i want to create a method Called StartWorking() and i want frmChild to inherit this method.
But here is the tricky thing: when frmChild.StartWorking is called i would like the following => without calling MyBase.StartWorking()
I want frmBase.StartWorking() to be executed first and after a test in frmBase.StartWorking if blnValue is true then frmChild.StartWorking has to be activated. if blnValue is false that frmChild.StartWorking cannot be activated.
I have nine pictures that I need to animate -I need to use the ToString method and a counter to concatenate a file name into a string variable from the Image.FromFile method. Once the counter reaches its maximum value, and the last picture is displayed, the counter should be reset to zero or one depending on how the first image file has been name. Also a static counter variable should be incremented in the time routine. what I have so far -- I know what I have to do; however, I just do not know how to code this properly.. Right now I have this going thru a button procedure but it needs to go through a timer.
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Write an overload for every numeric type or if possible constrain a generic extension method to just numeric types.
View 2 RepliesI will try to explain what I need.Let's say that I have a class like this:
Public Class Example1 Public Sub ToBeCalled()
[Code]...
When I am loading an Assembly dynamically, then calling a method from it, I appear to be getting the method from Assembly executing before the code in the method that is calling it.It does not appear to be executing in a Serial manner as I would expect. Can anyone shine some light on why this might be happening. Below is some code to illustrate what I am seeing, the code from the some.dll assembly calls a method named PerformLookup. For testing I put a similar MessageBox type output with "PerformLookup Time: " as the text. What I end up seeing is:
First: "PerformLookup Time: 40:842"
Second: "initIndex Time: 45:873"
Imports System
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Why does my the declaration of my string in the code result in the following error? Is there a workaround?
Code:
<script runat="server">
Protected Sub form1_Load(sender As Object, e As System.EventArgs)
Dim x As String = "</script>"
[code]....
Error: Statement cannot appear within a method body. End of method assumed.
Note: The following page did not fix my issue and instead resulted in the string </script> being output in my page. ( VB.NET hates </script> tag in string literal )
I am not sure whether this is a trick question?One of the object i have has 2 boolean properties, Standing and Sitting.I have a class called student with the 2 methods stated below- Am I coorrect is assuming that the first method draw() is affected by the standing property AND not the second method?Also the way it affects is that it draws an image when the the stugent is standing?
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What's the equivalent method in .NET of the Picture1.Scale (0,0)-(10,10) method in 6.0?
View 2 RepliesLet's say I have a page Test.aspx along with test.aspx.vb.Test.aspx.vb contains a class name "TestClass". In that class I have method1(), method2() and method3()I need to be able to call one of those methods, but I can't hard code it, the method to be executed comes from a string.
I can't do
Select Case StringContainingTheNameOfTheDesiredMethod
Case "Method1"
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Extension methods are useful for types that you don't own and can't/don't want to derive from and extend (e.g. reference types and interfaces). Obviously, interfaces should be kept as short and to-the-point as possible, so extension methods for interfaces are particularly useful (e.g. LINQ).For classes, especially classes that you own, they're still useful - but I'm wondering how you determine what should be an extension method or what should be a method in the class itself.Personally, every time I think about it, I keep going round in circles with the following thoughts:If it's useful enough, it should be in the class.It's not part of the core responsibility of the class, it should be an extension method - but if it's useful enough, surely it should be the responsibility of the class...
View 3 RepliesI have a Application that Crypts all Files in a Directory and the Subdirectories
Public Shared Sub CryptAllFiles(ByVal crypt As Object)
'check if this dir exists
Dim vDirInfo As New DirectoryInfo(vPath)
If Not vDirInfo.Exists Then Exit Sub
'get all files' sizes in current path
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i've tried to use SHELL to run an program when i hit "Button1".I reckoned ill use the Computer.FileSystem.GetFiles.To find the File on the Users Computer. And i dont know how to transfer the data Computer.FileSystem.GetFiles obtains to the Shell.[code]
View 3 RepliesIf I have a folder with a bunch of ".htm" & ".html" files in it and I use
My.Computer.FileSystem.GetFiles(myFolder, FileIO.SearchOption.SearchTopLevelOnly, "*.html")it returns all the ".html" files, as expected. But if I useMy.Computer.FileSystem.GetFiles(myFolder, FileIO.SearchOption.SearchTopLevelOnly, "*.htm")it returns ".htm" & ".html" files, when I would expect it to return only the ".htm" files. Is this a bug?
I would like to create .xml files on my desktop. I have example.xml file under project folder. It has couple variables that users able to change and when l compile it receiving following error message Look like it doesnt exepting My.Computer.FileSystem.CurrentDirectory \example.xmlSee the end of this message for details on invoking
just-in-time (JIT) debugging instead of this dialog box.
************** Exception Text **************
System.IO.FileNotFoundException: Could not find file 'C:\Documents and
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Just playing about with some vb.net and i dont understand why when i enter Dog into the text box the label continues to say not dog?
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Is there a way to choose between different methods and pass one into another method ?
Sub conditionnal_binding(ByVal list_box_reference As ListBox, ByVal list_box_final As ListBox, _
ByVal dico_source As Dictionary(Of String, List(Of String)), _
ByVal my_methode As ??? )
' DO SOMETHING
End Sub
I wrote ??? because I don't know how to call another method inside a method.
I would like to choose between different "sub-methods". Here is how I would like to use my method :
conditionnal_binding(ListBox1, ListBox3, HTML.dico_basic_attribut, best_method)
conditionnal_binding(ListBox1, ListBox3, HTML.dico_basic_attribut, some_method)
conditionnal_binding(ListBox1, ListBox3, HTML.dico_basic_attribut, another_method)