C# - Inline Definition And Long-declaration Of A Variable
Feb 20, 2012
im sure im mis-wording the concept but here it is anyways. I know in CSharp you can do
el.AppendChild(new UISize(file, "TSize") { CX = 95, CY = 20 });
which declares a temporary bucket variable and then assigns the associate property values to the variable. Which then sends it to the XMLElement AppendChild method. What is this design concept called? What is the conversion to VB.Net? I have tried using my own online utility that does a 90-95% conversion rate from C# <-> VB.Net. It has failed in this instance, and so need a hand-up on what i am looking to do to convert this from C# to VB.Net. I would really like to not have to do a long-declaration of a variable with assignments, if at all possible.
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May 19, 2011
In the following two code snippets, the code does the same thing, when I tested this.
Dim test As New Class1 Dim test As New Class1() Do the parantheses make a difference in some way? Is there an explanation of this in the msdn library?
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Jul 6, 2009
I am on one asignment of convering C# to VB.net and stuck up with this problem.C# application has one class having inline two dimensional array initialized with size 168X168. I converted same class to Vb.net. Now whenever I create instance of my this VB.net class, It take almost 3 minute.
To figure out problem, I put break point on sub new() (first line of my constructor), and behaviour is realy strange because it takes 3 minutes to reach at first point of my constructor.Whenever I comment out my large size array initialization code, It works perfect. Now please note that same code is working fine in C#. It is not taking even few millisecond to initialize that class.
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Oct 20, 2011
I've read several articles and questions/answers that conclude the best practice is to let the JIT compiler do all the optimization for inline function calls. Makes sense. What about inline variable declarations? Does the compiler optimize these as well?
[Code]...
Of course I prefer the latter because it's easier to read and debug, but I can't afford the performance degradation if it exists. I have already identified this code as a bottleneck -- No need for retorts about premature optimization.
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Mar 8, 2010
In this
Dim [end] As Point = e.Location
what is the significance of the [] 's?
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Jan 19, 2011
I have the following form[code]...
and when I run my app, I get a SQL error that tells me that I need to declare a value for '@payperiodstartdate' but I know that that value is declared because the first query runs fine. I am told that the line where the error is is line 59, which is this line [code]...
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May 17, 2010
I'm working on a home project using DirectShow.Net. to learn some VB.net. Most of the examples I've found have all been in C# so I'm looking through code for ideas and converting where I need to. I keep stumbling upon these declarations and I'm unsure how to convert it to a VB.Net statement.[code]Then the second part seems to be assigning the value but as its made up of two parts im unsure how that works?
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Feb 1, 2010
[code].....
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Jan 27, 2012
wondering about the relatively efficiency of declaring oop variables in the loops, emselves, or declaring them before first use. Here are some examples:Declare early:
Dim ix As Integer
Dim currentNode As System.Xml.XmlNode
For ix = 1 To 100
[code].....
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Oct 24, 2011
I have noticed in VB.Net that most Dim statements also include an assignment. Eg:Dim myvar As String = "Hello World"As this wasn't possible in VB6 I have always done the following:
Dim myvar As String
myvar = "Hello World"
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Aug 26, 2011
For i As Integer = 1 To 10
Dim j As Integer = 10
Next
now my question is, Is memory allocated to j every time its executed inside for loop? or only value of 10 is assigned on subsequent iterations?
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Apr 26, 2010
I'm making a call to my DLL file (prototyping 30+ functions), and want to be able to switch between different versions of the DLL quickly while in development. Thus, i want to replace the literal string constant that follows the "Lib" key word, with a variable string constant. In case there's any confusion in my use of the jargon. I am currently able to do this:
[Code]...
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Nov 22, 2010
How could I create declaration(event) to a variable control in VB .net ? [code]please i need to know how to insert this (declaration) newweb_ DocumentCompleted it's similar to WebBrowser_DocumentCompleted but it's a variable
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May 31, 2011
When I scroll down to the function shown below, and right click Analogues - go to definition it takes me to the top of the file, and lands on top of the
[Code]...
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Jul 8, 2010
I was looking at some existing code and stumbled across a variable declaration I didn't understand.
public foo as Boolean?
What does the question mark signify?
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Jan 4, 2011
I've been programming for many years in many languages and I've seen the variable declarations conventions change. With VS 2010 I've noticed you don't have to declare the variable type. I work alone so I can use any method I want. But, someday I may want to sell some of my code so I would like to keep my programming conventions current.
In VS 2010 which of these would be considered the best convention?
Dim srtFirstName = "Bob"
Dim strFirstName As String = "Bob"
Dim FirstName = "Bob"
Dim FirstName As String = "Bob"
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Apr 21, 2010
Why are static variables set equal to 0 in the declaration when 0 would be the default value of the numeric variable anyway when it's first declared? Not including the "=0" in the static declaration seems to work with no problem.
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May 3, 2012
When using the variable tTimeInterval as Long trying to reassign the variable in the timer's sub,
but the tTimeInterval is 0 after enter in the sub,,
Public tTimeInterval As Long Sub Main()'Dim param_obj(2) As Object 'param_obj(0) = "sdaddsa"
'Dim aThread1 As Thread = New Thread(AddressOf SendingMessage4)
'aThread1.Start(param_obj)tTimeInterval = 5000
[Code]...
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Mar 3, 2012
i am reviewing variabes, and just wondering any variables that can be used in math to hold a value this big =)
[Code]...
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Jun 21, 2011
I got problem regarding declaration of dynamic runtime array declaration Here is my code
[Code]...
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Sep 18, 2011
Is there a easer way of coding in stead of wrighting long long paragraphs like this in one line [code]All of this is on one line and i got lots of info to put down.."The game will begin on your 16th birthday with your mother waking you up. Today you are to go to the castle for the first time. Leave your bed and open your dresser for a Strength Seed. "
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Apr 20, 2011
Why define a variable "As Long"? And how does it differ from "As Variant"?
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Dec 26, 2009
In Visual Studio 2008 I am using :Private Declare Function BlockInput Lib "user32" (ByVal fBlock As Long) As Long To stop input from occuring during a search-replace operation.
BlockInput(True) ' do not allow input during search and destroy
Dim cursorIcon As Cursor
cursorIcon = Cursor
Cursor.Current = Cursors.WaitCursor
Then setting it to false at the end of the operation. It did not work, so I thought maybe it was because I was calling it from a child window, so I created a function in the mainwindow, and ran it like this:
FrmMain.BlockFrmMainInput()With these functions is the Main window:
[Code]...
It did not solve the problem. I thought maybe it was because I was running under the debugger, so I tried compiling and running it debugger-free, but that did not do any better. I am still getting input when I double-click the mouse on either form.
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Nov 4, 2009
i have an VB.NET application with few functions i need to debug (like ie. Assert in C#). Is it possible and how i do that ?
Public Shared Function createNumberArrayList(ByVal startValue As Integer, _
ByVal endValue As Integer, _
Optional ByVal isBackwards As Boolean = False) As ArrayList
[Code].....
Basically what i need is to enter few values and see if the function works and returns proper ArrayList.
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May 6, 2012
strtest() = objFile.ReadToEnd.Trim.Replace(vbCr, "").Split(vbLf).Distinct.ToArray
I created this command from a few examples which reads the text from a StreamReader, Trims, splits on EoL, and returns a unique list. My next command is a sort. I couldnt figure out how to add a sort to this command. Its really not that important but I was curious if there�s an easy way.
Additionally if there's a better way to take a text file into an array or collection I'm all ears.
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Jun 22, 2010
Tell vb.net equivalent of following method:
CODE:
Which on build in visual studio 2005 gives an error.
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Sep 16, 2010
I need a inline calculator for a textbox.
When the user types 45*10+5 i need to have the answer displayed as 455 in the same textbox
Any one with a briljant idea of how to sovle this.
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Feb 11, 2009
I know that this should probably be under mobile development .. but no one seems to use that thread ... so anyway .. here is what i am trying to do:
TreeView1.LabelEdit = True
With TreeView1.Nodes.Add("asd")
.BeginEdit()
End With
The above works for a windows application ... but i was wondering how i could do this on a windows mobile application as LabelEdit and BeginEdit don't exist!
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Jan 27, 2012
This is my problem. If I write this -
[Code]...
But I'm just out of my wit why this code, written to do the same thing is not working -
[Code]...
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Aug 13, 2010
I am trying to do an inline IF statement inside a asp:Repeater control to add a class to the first item, but I can't quite seem to figure it out. Basically the code I have right now that is not working but should give an idea of what I'm "trying" to do looks like this.
<asp:Repeater ID="rptrTabRepeater" runat="server">
<ItemTemplate>
<div class="tab <%= If Container.ItemIndex = 0 Then %>highlight<% End If%>">
'Other stuff here
[code]....
I have tried using the OnItemDataBound event but the delegate interface cannot return a value. If I'm going to do anything from a code-behind function really it would just need to be an "echo" kind of function which I wasn't quite sure how to get the item index in a code behind function.
EDIT: The compile error I am getting is:
Compiler Error Message: BC30201: Expression expected.
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