VS 2010 Enum Class And Cyclic Correspondence Checking
Mar 13, 2011
I wanted to make a collection of definitions public, for which the Enum class was a perfect candidate, but I also had the need to check variables against all the possibile enum members to see which one they were.
In this scenario my solution was to write a public enum class in which all the members were made available, and replicate the same listing in an array in order to iterate through.
In fact the only way I know to iterate through all memebers is a cycle (either "for each" or "while somecondition" and a moving index). But I guess there must be a simpler way to make use of an enum class.
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Jul 21, 2011
How to connect a combo box and an enum which is kept in another class? I have searched google a lot but the only solutions I can seem to find involve declaring an enum with the combo box. I however want to keep my enum elsewhere, not in the main gui element handling form. The closet thing I could guess was:
Combox99.DataSource = System.Enum.GetValues(GetType(MyBookList.OptionsList)
With MyBookList as a previously defined instance of the BookList class.
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Dec 30, 2009
I have a URL lets say . some time i need to send HTTP and some time i need to send it to HTTPS for that i created a enum:
Private _protocol As Protocol
Enum Protocol
HTTP
HTTPS
[CODE]...
Now when i get value back from protocoltype it returns me integer value as enum do so tell me how to get string from enum or other substitute.
Dim targetUri As String = setting.protocolType & "://www.mysite.com"
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Dec 15, 2010
[code]Now how can I check if a certain employee is in the list? ie. I want to know if "John Smith" is in Employees. I see there is a .Contains method but I can't figure out how to use it on a ListIf Employees.Contains(???) Then (need to check for "John Smith" here)
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Aug 1, 2011
I'm going to do my best to describe what I'm trying to do. I have a class that has an enum in it.[code]...
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Aug 19, 2009
Is there any way to fill dropdown list from Enumeration that is Enum class For e.g I have the Report Types as Enum Class
Public Enum ReportType
PDF=1
Crystal=2
Excel=3
End Enum
This Enum Class is there any way to bind in Dropdownlist
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Jul 28, 2011
In a global module, I define a new type that can take 4 values:
enum tAction as integer
None
Update
Insert
Delete
end enum
A use this type in many places in my code to check the value stored in a variable (if MyAction = tAction.Delete then ...)
In a separate file, I define a class. One of the properties should return a value of this type:
public class XXX
private _Action as tAction
public property ClassAction() as tAction
[Code].....
This way I could check a class property in the same manner (if MyClass.ClassAction = tAction.Insert then ...)
However I get a syntax error in the property definition: 'ClassAction' cannot expose type 'Globals.tAction' outside the project through class 'XXX'
My entire program consists in a few modules, in a single project. How can I use my tAction definition in my classes?
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Feb 10, 2011
It's the first time I see this error.
System.IO.IOException: Data error (cyclic redundancy check).
at System.IO.__Error.WinIOError(Int32 errorCode, String maybeFullPath)
at System.IO.Directory.DeleteHelper(String fullPath, String userPath, Boolean recursive)
at System.IO.Directory.Delete(String fullPath, String userPath, Boolean recursive)
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Nov 16, 2011
Here is what I have in my file
Option Strict On
Imports MyNameSpace.MyEnum
Public Class AwesomeClass
[Code].....
But since MyEnum isn't defined in the subclass it won't work. I am not very familiar with what these types of things are called, but I think that I am import a type definition of sorts. Since I am Importing, and not defining, it is only available in the first file. Basically, I want to include MyEnum as part of the class but I don't how to do it. I don't want to copy/paste it over, and I don't really want to write Imports ... at the top of all of my subclasses.
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Dec 7, 2010
Application: Arrays are to be used for this. When button Add Student is clicked it should add all the information for a student and when Show Student button is clicked it should prompt the user for student's last name and student's information in a message box. Class ranking list box has an enum function to it and has to be stored be show along side other answers.NOTE: FindItemIndex if from the last application I did, i am suppose to use it in this one,so you can modify it the way you want.
[code]...
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Jul 12, 2009
I've got this in a public module
Module PublicModule
Public caseBAL_C As caseBAL
Public clientBAL_C As clientBal
Public Enum CSFlags
[Code]...
It doesn't like the Public Property StateFlag() As CSFlags -it's saying that CSFlags
'StateFlag' cannot expose type 'PublicModule.CSFlags' outside the project through class 'caseBAL'.
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Jan 29, 2011
I'm trying to pass data from the main form to a business class form for calculation.I have 3 types of cars and I can't get the code right to pass that to the business form. It seems correct to me, but obviously, it's not.This is the code for the calculate button, I can't figure out why its telling me that CarSize is not a member of the business form when I have it in the Enum statement at the top. I'm going by what the book says and this appears right according to it.
Dim CarTypeInteger As Integer
'determine the car size from radio buttons
If LuxuryRadioButton.Checked Then
[code]....
In the book it says to specify the class name when declaring the enum on the business form. So to me it looks like it should be -RentalRate.CarSize.Luxury The error I have is 'CarSize' is not a member of the 'ChristiansCarRentals.RentalRate'.
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Mar 25, 2011
I'm trying to declare an enumeration and one of the names I'd like to use for an item is not usable apparently. Where I am declaring 'STEP = 3', I get this error message in visual studio: "Statement cannot appear within an Enum body. End of statement expected." Is it possible to use STEP as an item name somehow? [Code]
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Jan 2, 2012
RE - FilesystemRights Enum
This Code:
Dim FSRS As Type = GetType(FileSystemRights)
For Each fsr As String In [Enum].GetNames(FSRS)
TextBox1.AppendText(fsr.ToString & vbCrLf)
Next
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Jun 27, 2011
I know from .NET 3.5 onwards (or might be 3.0) we can use Exension Methods to add our own methods to any Type in the .NET Framework and this is very handy, but I'm wondering if it is possible to "extend" an Enum as well?
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Apr 12, 2012
[code]On my form I have text box control bind to data from sql db where for GeneralLedgerType I have only string value taken from db like "0000010" or "0000020", and when I try to run application error appears "conversion string to integer failed" and I know that I have to parse string to enum, but not sure how .
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Aug 20, 2011
with this all previously defined earlier, book is another class with a public sub new and all is working perfectly well.However. Within the book class I've a bit of code which sets the author "invalid" if it is wrong (i.e. the name has numbers).How would I then check within myBook for an instance of invalid?i.e. assuming a string that can only be invalid or not if myBook= "invalid" then correctstuff=false
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Feb 20, 2012
I would like to make an enum of strings. There are several masks for text boxes that I would like to standardize in our system.For simplicity lets say there are 2 masks:
"PhoneNumber" which is "(999)000-0000"
"Zip Code" which is "00000-9999"
I would like to be able to reference these through out the entire program in a manner such as:
DefaultMasks.ZipCode or DefaultMasks.PhoneNumber
Since enums can not be of string type, what would your best suggestions be as to how I could do this. I had thought about a class with constants in it but I was not sure how to implement that properly.
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May 26, 2010
Which is better, using a nullable enum or adding the value None=0 to your enum list?Using nullables requires more code, but I kind of like it since it forces me to think about the possibility. Otherwise I'm liable to forget about the None enum and fail to account for it being a special case.
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Aug 23, 2011
I've tried the code below but it always returns nothing, It should enter
Protected Function GetTotalDebitAmount(ByRef roEntryDetailRecordBaseList As List(Of PPDEntryDetailRecord)) As String
Dim iTotal As Integer = 0
[Code]....
I need some one who evaluate the part below:
If CBool(Array.IndexOf([Enum].GetValues(GetType(TransactionCodes.Debits)), CInt(oEntryDetailRecord.TransactionCode)) > 0) Then
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Apr 15, 2011
how find an object's type when it is a subclass of another object and I only know the string value of the object's type's name.
I created the follwing classes:
Public Class word
End Class
Public Class noun
[Code]...
Using 'TypeOf', I correctly see that pn is a properNoun, a noun and a word. The problem is, using 'GetType' to check pn against a string value, I can only see that pn is a properNoun, not that its parent classes are noun and word.
Is there a way to check pn against the string value "noun" or "word" and get back a positive result, indicating that pn is indeed a noun and a word as well as a properNoun?
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Apr 27, 2011
I am using Visual Studio 2010 Prof. In C# I can create my own Enumerator and use it like this:MyEnum value = Now, Intellisense will suggest a value of MyEnum. In VB, when I write:Dim value As MyEnum = I get a huge list of every types. When starting to write my enumerator value (could be a word like "sunny") it filters out some types but I would like to have it like in C#. Anyway I will use the MyEnum type and no "String nor Objecte nor IntPtr...".
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Nov 19, 2010
I'm working on an automated program, and it needs to check the latest email on a certain account (which will be passed to it) every 15 seconds or so. Setting up the timer and the passing to the timer the username and password is easy, but it's the reading the email that I'm having trouble with. How exactly can I read the first few emails from my inbox and put them in an array? And after that, how can I access the body and subject, for example email.body and email.subject?
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Jan 11, 2011
I�ve written an app that downloads from the internet with my.computer.network.downloadfile mehtod. The problem is it�s supposed to try a numder of urls and if there�s data, it downloads, otherwize the url is wrong. The utl adress is a combination of date and a letter, which the program gets from a database. So for every date, it checks all the letters as suffixes until it finds the right one. However the wrong ones tend to time out or something, which takes forever and also causes some errors. Is there a way to check if a url is valid at all, instead of actually trying a download?
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Nov 10, 2010
I have two user controls that need to add a class atribute to the body tag of my page, however they currently over write one another if I just use Body.Attributes.Add("class","value") So I need to check if the class attribute exsists and if it already contains the value Im going to add.
If Not Body.Attributes("class").Contains("value") Then Body.Attributes.add("class", Body.Attributes("class") + " " + "value") End If
EDIT: The contain constraint doesnt return the expected value, resulting the the class not been concatinated, Example: add class "dog" then I a different instance of the same control tries to add "dog" but the contains("dog") returns false
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Oct 6, 2011
I seem to occasionally find myself trying to compare two List(of T) to see whether or not they contain the same elements. A quick check of the documentation shows the SequenceEquals method, but that appears to check whether the two lists have the same length, and have the same elements in the same order. I don't care about the order. I want to know whether two collections have the same elements. Doing this is not terribly difficult, and seems common enough, so I was expecting that there would be some function that handles it.
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Apr 7, 2011
How i can create a button as soon as I squeeze him, he will erase the last letter written?exactly like BackSpace
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Apr 1, 2012
I have this line of codes here to check if the records exist.
Try
If StudentInfoBindingSource.Find("StudentNumber", StudentNumberTextBox.Text) = -1 Then
ToolStripLabel4.Visible = True
[Code].....
This codes works perfectly but there is a problem, if I close that certain form and reopen it and try to input the same student number, the ex.Message for the Try appears and still the progressbar() command executes although the data will not be saved. I want to ged rid of the execution of progressbar() how can I make it work? And as much as possible I want the message box in Else to be executed and not the msgbox in try catch.
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Aug 10, 2011
Basically, in my Tcp Library I'm working on, whenever the system is told to "Stop", the OnClientConnected() Routine fires off, which is only raised under two circumstances: When a Client connects (obviously) When the server is told to shutdown
Now, the first one is handled just fine. But the second one is not. In fact, it has caused me a great deal of headache because it keeps throwing exceptions on this line in particular:
Dim _tcpClient As System.Net.Sockets.TcpClient = _tcpListener.EndAcceptTcpClient(IR)
When I hover over while debugging, I can see a few members that reveal exception data I could utilize; but unfortunately those members are private and I don't want to utilize reflection unless I have to since it could slow down performance where there may not be a real reason to.
I have thought of writing in a Boolean check to see if the server received a shutdown signal and that would indicate that it's time to not accept anything, but I want to avoid that if possible.
Is there any way to see if the TcpListener is no longer accepting connections and has had .Stop() called without reverting to catching the ObjectDisposedException that is raised? (because the Socket that is "accepted" is actually a disposed one)
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Sep 1, 2011
I have a field that I want to check to see if it has a value or not. But my code is not working. I am using:[code]
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