Difference Between Array And Object
Jan 28, 2010I want to know the difference. I have given 2 lines code.
CODE:
Let me know difference between both datatype.
ADVERTISEMENT
What's The Difference Between Variable Array And Object Array
Jan 30, 2011what's the difference between variable array and object array?
View 7 RepliesDifference Between Using The 'array' Class In VB And Just Declaring An Array Like Normal?
Mar 12, 2010What is the difference between using the 'array' class in VB and just declaring an array like normal. In other words, what is the difference between:
Dim numOfTicketsPerDay As Array
Dim intNumOfTicketsPerDay(6)
As Integer
Is there any preference of when one should be used over another?
Difference Between The Object ?
Apr 8, 2011If I create a class in VB called Test,I noticed I can instantiate it like:
Dim test As New Test
or
Dim test As New Test()
What is the difference?
Object Arrays - 2 Declarations - What's The Difference
May 23, 2010Dim MyOrders As Order()
Dim MyOrders2() As Order
Difference Between Timer Class And Object?
Nov 25, 2010I'm using vb10. I need to use a timer for forms to turn off and on and I was going to use a timer control and I noticed there is a timer class. What is the difference? Should I use the timer class instead?
View 5 RepliesWhats The Difference Between (As) And (=) In Object Declaration
Jun 2, 2011if I created a new object like this Dim sqlconn As New SqlClient.SqlConnection(cs)
and Dim sqlconn = New SqlClient.SqlConnection(cs) Whats the difference?
.net - Difference Between Declaring And Constructing A Value Type Object?
Oct 2, 2009I've been working in .NET for some time now, but occasionally I still get confused by a disparity between the framework and my prior experience in C++.In .NET, all objects are either value types or reference types. Reference types are allocated on the heap while value types are allocated on the stack (in the current CLR implementation, anyway). I get that. However, at least in VB.NET, you can still define a constructor on a value type.
Public Structure Coordinates
Public x As Integer
Public y As Integer
[code]....
Difference Between Inheriting And Creating Object Of A Class?
Jun 29, 2010When we can access the public methods via object then why is there need of inheritance.
View 2 RepliesInitializing Object Variables - Difference Between Methods
Jan 20, 2009In VB.Net is there any difference between the following three ways of initializing object variables
Method 1
Dim commandObject As SqlCommand
commandObject = New SqlCommand("MadeUpCommand")
Method 2
Dim commandObject As SqlCommand = New SqlCommand("MadeUpCommand")
Method 3
Dim commandObject As New SqlCommand("MadeUpCommand")
Is one more efficient than the others, or are they effectively all the same?
Difference Between Array List And Generics
Dec 20, 2010I know boxing and unboxing part in arraylist but question is if I define only string in arraylist then there is no question of boxing or unboxing. What will be the difference.
View 1 RepliesIDE :: Difference Between The Dll Or Exe File From The Debug Or Release Version Or Bin Or Object Folder
Jun 10, 2012if you are debugging or releasing a projet , vs writes exe or bin files to the bin and obj folder in a release and debug version, are ther differences bewteen these files with the same name in 4 folders ?, eg myproject.exe
View 3 RepliesVS 2008 - Find The Difference Between Creating A New Object In Program And New Record In The Database?
Mar 7, 2010I`m a beginning programmer, and I`m trying to build my first 100% object. The object would be a USER object, representing rekords from users table in database. The table in the database has 5 columns ->
[Code]...
Object Reference Not Set To An Instance Of An Object With A Class With An Array Of Classes As A Member?
Aug 6, 2010Here is the structure that I have:
Friend Class StandardFormatFile
Friend fileType As String
Friend numberOfSeries As Integer
[code].....
Object Array To Byte Array - Marshal.AllocHGlobal Fragmentation Query?
Jun 14, 2011I didn't think it fair to post a comment on Fredrik Mörk's answer in this 2 year old post, so I thought I'd just ask it as a new question instead..NB: This is not a critiscm of the answer in any way, I'm simply trying to understand this all before delving into memory management / the marshal class.
In that answer, the function GetByteArray allocates memory to each object within the given array, within a loop.Would the GetByteArray function on the aforementioned post have benefited at all from allocating memory for the total size of the provided array:
Dim arrayBufferPtr = Marshal.AllocHGlobal(Marshal.SizeOf(<arrayElement>) * <array>.Count)
I just wonder if allocating the memory, as shown in the answer, causes any kind of fragmentation? Assuming there may be fragmentation, would there be much of an impact to be concerned with? Would allocating the memory in the way I've shown force you to call IntPtr.ToInt## to obtain pointer offsets from the overall allocation pointer, and therefore force you to check the underlying architecture to ensure the correct method is used*1 or is there a better way? (ToInt32/ToInt64 depending on x86/64?)
*1 I read elsewhere that calling the wrong IntPtr.ToInt## will cause overflow exceptions. What I mean by that statement is would I use:
Dim anOffsetPtr As New IntPtr(arrayBufferPtr.ToInt## + (loopIndex * <arrayElementSize>))
I've read through a few articles on the VB.Net Marshal class and memory allocation; listed below, but if you know fo any other good articles I'm all ears![URL]..
Passing An Array Of Integer To An Array Of Object In A Function
Mar 4, 2012I am creating a dll with all the functions and subroutines that I use all the time and I decided to create a function that I can pass different types of array to so the function obviously (or not) would have an array of type object. Now I no you can pass any type into an object type but when I pass an integer array into an object array I get an error.
value of type '1-dimensional array of integer' cannot be converted to '1-dimensional array of object' because 'integer' is not a reference type.
Shared Function CompareArray(ByVal FirstArray() As Object, ByVal SecondArray() As Object, Optional ByRef ErrorMessage As String = "") As Boolean
Dim IntArrayOne() As Integer = {1,2,3,4,5} Dim IntArrayTwo() As Integer = {1,2,3,5,6} Dim IsSame As Boolean = False IsSame = CompareArray(IntArrayOne(), IntArrayTwo())
Creating An Object Array Of Different Object Types?
Mar 29, 2010I am having some trouble creating an object array of different object types. Here is what I have so far:
Public Sub New()
Dim b1 As New Book("Book Title 1", "Gold Book Publisher", 1.0, "Bob Jones", "192DJDJD212", "01/02/10")
Dim b2 As New Book("Book Title 2", "Gold Book Publisher", 1.0, "Bob Jones", "192DJDJD212", "01/02/10")
Dim b3 As New Book("Book Title 3", "Gold Book Publisher", 1.0, "Bob Jones", "192DJDJD212", "01/02/10")
[code]....
If I define the array As Book (Public publicationArray(6) As Book) or Magazine (Public publicationArray(6) As Magazine) I am able to access the properties of that class but not both. I think I need to define a type for each array instance but not sure how to do this.
Return An Array Of Object Interface's Rather Than An Object?
Mar 4, 2009I have an interface that describes an specialized list in my application...
[Code]....
Is there a way to make an interface serializable, or am I going to have to convert each of my objects into a concrete class implementing the interface, and then return that class?
Array Declaration And Initialization - "Object Reference Not Set To An Instance Of An Object."?
Feb 22, 2010The last line in the code below throws the error. Is it because I haven't intialized the size of the byte array?
Public Class Form1
Private toSocket_IPP As Byte()
Public Sub New()
[code].....
Object Array To Byte Array VB Or C#?
Aug 30, 2010I am working on a project and came to a junction. I have various data in a object array, myObj().
How can one convert Object Array to Byte Array
I dont know if i should be using Memory Stream, Buffer, etc.
Array Structures - Getting A Error "object Not Set To An Instance Of An Object"
Jan 11, 2011This is my code in vb.net 2010:
Structure feature_s
Public feature() As Integer
End Structure
[CODE]............
I keep on getting a error "object not set to an instance of an object" i am puzzled by this since there are no errors until i run the program. I redim the array. the build is fine. the exception is handled. and the structures and "dims are all global"
.net - Using Object Class As An Array?
Dec 19, 2010like every class in .net does Arrays also inherit Object?
View 1 RepliesArray With Object Names
Jan 30, 2010I'm having problems regarding using arrays on object names. for example, i have a textbox named txtBox1.text and a array declared as a(2). I what to transfer the value of the textbox to the array using loop.[code]
View 2 RepliesC# - Object Array Tryparse?
Dec 11, 2011I have an array of 5 objects and also 5 textboxes. I am wanting to check to see if the values in the corresponding textbox are valid for the type of object.I have currently hard coded this, I parse out the object type and then use a tryparse statement depending on the object type.
Can I do this automatically? Can I detect the type and use a tryparse statement for that type. Maybe something like:if objectarray(x).tryparse(textbox(x).text, nothing)
InterOp Array Object From .NET To VB
Mar 29, 2009I created a class named person and interface IPerson and tried to call this class in VB6 form. the class structure is given below
[Code]...
Object Name Pulled From Aan Array?
Jun 9, 2011My project I am working on is a product location system for a large supermarket. My current issue is that the map I am using to display the product location is assembled from rectangle objects which I will then change the colour of when required.The array storing the locations is dimensioned as LocationArray(x) Where x is equal to the max rows function used on a table in database. Stored information always proceeded with "loc_" and the location. All rectangles are named in accordance with this.
I wish to pull the field name stored in the array (which corresponds to the rectangle to change colour) and be able to change its colour. This is giving me issue as the straight forward command of "LocationArray(x).Color = #" doesnt work as an array does not inherit this property.
Pass Out An Object Array In .NET?
Mar 25, 2011I'm writing a wrapper class to expose a subset of the functionality of a .NET FTP library edtftpne from Enterprise Distributed Technologies.
When you call the edtftp's GetFileInfos method you get an array of FTPFile objects returned. I'm able to iterate through these but I don't know how to pass them on as a new and different object array containing only Name and Size for each file. Here's the code I have. Sorry it's a little confusing because I have my own class named FTPFile and the .NET library I'm using also has a class named FTPFile. I'm using both of them here. I should probably change the name of my class just to avoid confusion:
Public Function GetFileList() As FTPFile() Implements IFTP.GetFileList
Dim ftpfiles() As EnterpriseDT.Net.Ftp.FTPFile
ftpfiles = fCon.GetFileInfos 'Fill object array
[Code]....
I'd just pass on the object array that I'm getting from the GetFileInfos method but COM clients won't have access to the class/object EnterpriseDT.Net.Ftp.FTPFile without me rewriting it, I'm assuming.
.net - Insert A 2D Array Object To Database?
Oct 7, 2011My Task Background :I have list of data items and have to calculate/aggregate details about each data item and populate that to SQLServer database.I can do 1 by 1 insert [Traditional method]But, the application needs to perform good.Is it possible to aggregate the data in a 2d array and dump into database @ once ?' Populate this and insert it to database.
Private data(100, 100) As Object
So, how to do that ?Also, is it possible to use dataset in some way ?
Assigning Set Of Properties To Each Object In Array
Aug 19, 2010I am new to Vb I am trying to assign to each one of the objects in an array a set of properties and I get "Object reference not set to an instance of an object."
Public Class Form1
Private Sub Button1_Click_1(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim pointer As Integer = 0
depart(pointer).id = "text"
depart(pointer).name = "text" 'here I get the error
[Code] .....
C#: Object To String Array. [*] To [] Error?
Mar 30, 2012I have been assigned to Convert a VB.NET project to C# and I got stuck. I am using a class called RsiOPCAuto, but I don't think that I'll have to go into to much detail into explaining how it works. Let's just get on with my issue.
So basicly what i do is grabbing an object from my class using this code:
public partial class FrmPartialMain : Form
{
RsiOPCAuto.OPCServer oOpcServer;
[Code].....