FadeMode - How To Declare Enumerator

May 21, 2009

I have these variables as shown below. The FadeMode is assigned on of the 3 integer values. I would like it to work like an enumerator, so that when I working with the code editor, IntelliSense offers a choice of the 3 possible values. Like x = Fademode.FadeOut

Const FadeIn As Integer = 0
Const FadeOut As Integer = 1
Const FadePause As Integer = 2
Friend FadeMode As Integer = FadeIn

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List That This Enumerator Is Bound To Has Been Modified - An Enumerator Can Only Be Used If The List Does Not Change?

Apr 25, 2009

For
Each
Item As
DataRowView In
lbOrdersNeedToBeVoided.Items

[code]....

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Enumerator Within A USING Block?

Jul 20, 2010

I tried utilizing a collections Enumerator inside of a USING block to take care of the Enumerator.dispose call for me, however, I'm getting NullReferenceExceptions when trying to access the Enumerator.Current property after doing a MoveNext.

[Code]...

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Using An Enumerator To Parse A Collection?

Feb 13, 2009

If I am using an enumerator to parse a collection such as

Code:
''' <summary>
''' Checks to see if Node1 is a direct child of Node2
''' </summary>

[Code].....

The object comparison of Enumerator.Current and Node1 passes an option strict check, but should I for readability and or for any other reason cast it to the correct type? I know their object references will ultimately be checked the same way, but is it generaly bad form to assume this?

Second question. I recently came across the use of the Enumerator v/s a For/Each loop through the collection, does anyone know the pros/cons of the use of either in specifi situations. Where one is favorible to the other or where they should or should not be used?

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Construct Enumerator At Runtime From XML File

Jul 17, 2010

I am looking for a way to read an XML file at run time and construct an Enumerator from it. I got the reading and writing all working, it's just getting all the strings to create an enumerator that's the tricky part. I could get them into a collection of strings or maybe a dictionary, but not sure how to go about converting from these into an enumerator. The goal of this is to allow users to add and delete items from the underlying enumerators and eliminate writing hard coded enumerators. My idea is to allow users to extend the program without coding. This is a Winform vb app thats not using any database but just XML files to store and retrieve things.

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Passing A List's Enumerator To A Function

Dec 2, 2011

It looks like passing a list's enumerator to a function "byval" is quite different than passing it "byref". Essentially, regular "byval" passing will NOT change the caller's "enumerator.Current value", even if the function advances the enumerator. I was wondering if anyone knows why this is the case? Is an enumerator a primitive like an integer, without an object reference, and hence changes to it don't get reflected in the caller?This function is byval, and gets stuck in an infinite loop, spitting out "1" message boxes, because the enumerator's "current" never advances past 5.[code]The difference between the two functions is only whether the listFirstItem__ function accepts a byval or a byref enumerator.

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For Each Loop Enumerator Expression And Memory Consumption

Aug 15, 2011

According to the language specification guide for VB.NET Section 10.9.3. The enumerator expression in a for each loop is copied over into memory. If I have a list of 10000 objects that list will be in memory twice for the code below?
dim myList as new list(of bobs)
'put 10000 bobs in my list
for each x In myList
'do something
next

If I were generating the list from a linqQuery or some other such query it would make sense to generate that list at the for each loop statement thus not having the list in memory twice for example.
for each x in myList.where(function(x) x.name = Y)
'do something
next

If the LINQ query is unreadable on the for each loop, do I forgo readability and just put it on the for each loop declaration line? Should I declare the list in its own variable and just bite the bullet and have the list exist twice in memory?

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Unable To Understand Enumerator's Reset's Purpose?

Dec 30, 2009

if a call to For Each starts by calling the Enumerator's MoveNext, then Current, then MoveNext, then Current, and so on until MoveNext returns a False then it exits, am i right to say that the Reset is never called?initially i thought that Reset would be called when MoveNext returns False, i tried this (a msgbox would come if it was ever called but i got no msgbox at all)

[code]...

if that's the case, what exactly is the use of the reset in an ienumerator, and is it ok to leave it empty, as such

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Get Current Enumerator (iterator) In LINQ Query / Like A Current Index In For Loops

Sep 20, 2011

Is that possible to get current Enumerator (...or iterator? Don't know which tern is the correct one) in a LINQ query ? For example, I try to create a XML output (via LINQ to XML) of all currently loaded assemblies. [code] is it possible to somehow get current "index" (counter?) from LINQ's Selects? I would like to use it in XML. [code]

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Asp.net - Declare Label In Mvc?

May 21, 2011

I have a label called "test" in my Index.asp page in my MVC view folder. I want to be able to change the value of it in my controller class.

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Declare A Function From Dll?

Feb 11, 2009

I have this H file in C, which includes[CODE]...

I get an error :FatalExecutionEngineError was detectedMessage: The runtime has encountered a fatal error. The address of the error was at 0x79e71bd7, on thread 0x11f0. The error code is 0xc0000005. This error may be a bug in the CLR or in the unsafe or non-verifiable portions of user code. Common sources of this bug include user marshaling errors for COM-interop or PInvoke, which may corrupt the stack.How do I translate it correctly ?

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Declare A Value As Object?

Jan 26, 2012

In C# we do

byte[] imageData = new byte[];
SqlCom.Parameters.Add(new SqlParameter("@ImageData", (object)imageData));

which makes the imageData variable as an object.But How do i do this in Visual Basic??

Dim imageData As byte() = new Byte()
SqlCom.Parameters.Add(new SqlParameter("@ImageData", ?? ) <-----What Should i do here?

My code is like this

conn.Open()
Dim cmd As SqlCommand = New SqlCommand("SELECT PhotoID From Photo " & str8 & " And Photo = @Photo", conn)
cmd.Parameters.AddWithValue("@Photo", CType(Photo, Object))[code]....

It comes out error like this:The data types image and varbinary are incompatible in the equal to operator. What should I do?

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Declare An Object In Vb?

Mar 16, 2011

To declare an object in JS i can simply do the following:

var house = new Object();
house.window="square"
house.color="green"

In asp.net (VB) if i try doing the same

Dim house = new Object()
house.window="square"

i get an error: System.MissingMemberException: Public member 'window' on type 'Object' not found.

Do i have to create a house class before i can reference house.window? Is there no way to do it without creating a class?

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Declare Attribute In VB?

Dec 21, 2010

In my VB 6.0 code, I declare have the following line[code]...

However, in VB.NET, I get the error "expecting declaration". Isn't this a declaration statement? Is there a good reference for finding the differences between VB.NET and VB 6.0?

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Declare Integer's Hex Value In VB?

Jun 20, 2009

In c++ we declare integer's hex value like this

int myint=0xabcd;

so how to i declare integer's hex value in vb.net

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Declare One Variable More Than Once?

Jan 24, 2011

I want to know if it is possible to declare a variable thrice.

[code]...

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Declare Stuff At Once?

Sep 23, 2008

i am making a program and the program runs too slow, so i would like to declare my functions at once.. not like this :

[Code]...

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How To Declare A Datasource

Apr 30, 2012

How to declare a datasource?

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How To Declare A Textbox

Oct 1, 2010

how to declare a textbox because my computer for a particular textbox say that "is not declared"

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How To Declare App.EXEName

Oct 27, 2009

i know it's probly really easy. but how do i declare App.EXEName

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How To Declare OlFormatHtml In Vb

Apr 24, 2012

I am trying to send mail that is formated as HTML but I get an error showing thatlFormatHtml is not declared. How do I declare it?

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How To Declare SQL Parameters In VB

Apr 17, 2011

I need to get the customer name from the user as in combo box when the user selects the user I want that selected customer name should be searched in the sql table (here table name is "obbalance") and all the entries in the table having the name as the selected customer naem it should be shown in the data grid view

cmd.Parameters.Add(New SqlParameter("@p1", SqlDbType.NVarChar).Value = ComboBox1.SelectedItem.ToString)
cmd = New SqlCommand("select obbalance from balance where custname=@p1", con)
dr = cmd.ExecuteReader()
Form2.Show()

After this also it shows a error. It shows error in declaration.

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How To Declare Textbox

May 9, 2012

I have created a new class, but I cannot use the textbox in the class as it is in the form1 class how would i declare it or use it in both classes?

i have tried form1.textbox1.text which workings in coding but when running my system it does nothing.

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How To Declare Updareresource Api

Jul 15, 2010

Can anyone tell me how to declare updareresource api in vb.net . i searched pivoke site i didnt found example for vb.net and also show me an example please explaining its parameters

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How To Declare Variables?

Feb 6, 2012

trying to figure out how to declare items here. here is the

[Code]...

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Way To Declare An Array?

Jun 13, 2011

What is the right way to declare an array
Dim lblname As Label() = New Label(get_num_of_children()) {}
Dim mealcheck As Integer() = New Integer(get_num_of_children()) {}

[code].....

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Where To Declare Variable

Jul 21, 2009

I have a form with 2 controls, a textbox and a button. The user will type text into the textbox and then when they click the button the text that they entered will be added to a List Collection. You can see the code below. There is just 1 problem. Where would I put my declaration of my List Collection so that it holds the values and does not start at the first element everytime the button is clicked?[code]

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Which Way Is Better To Declare Parameter

Mar 26, 2011

'--------------------------------------------------------
'First
'--------------------------------------------------------

[code].....

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Declare Variables Dynamically?

Dec 10, 2009

Is it at all possible to declare variables dynamically? Something like Dim Answers & i As ArrayList. What I'm trying to achieve is putting one or more answers to a question into an array. Or should I really be looking at a mult-dimensional array to store the question number and answer? How would I add to and access a multi-dimentional array? Anyway, here's the section of code:[code].......

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'As Any' Is Not Supported In 'Declare' Statement

Sep 3, 2009

[Code]...

What needs to be done to properly declare the function using vb.net

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