Creating An Object With Methods?

Mar 25, 2010

In the code below (which I just wrote here - it closely mirrors what my actual code is...) the problem is with the line:

Thing.ThingObject.Add(MyObject)

It says: "Object reference not set to an instance of an object" Yes - it is "nothing" before I try to use the Add method so I must be doing something basic and wrong.The object I am trying to add is fine - I can tell you it is correct, it's just that I apparently cannot use the .add method on the Thing.ThingObject until it is properly created - which I have apparently not done.

Private Sub DoThing()
Dim MyObject as New Object
MyObject = MakeMyObject

[code]....

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Cant See Available Methods List When Write Object.METHODS?

Jun 24, 2011

I am working with a vb program, but there is something strange on one of my .vb code pagewhen i put the "dot" afther the object name its dont show the methods availables for this objectbut on other vb code pages i can see it. but in this one no.for exmaplethis is a piece of code: Dim sb As New StringBuilder()

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Constructor String - Create An Object And Use The Object To Display All Methods

Sep 21, 2009

Under component services, a COM+ component is used by the company, right-clicking it and choosing 'Activation' tab will show the 'constructor string' that is used for DB server connection by all applications. How can I access it the simplest way possible?

[Code]...

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2 Different Methods Using Same Object Methods?

Aug 26, 2010

Public Class Form1 Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load Dim someproc As Process

[Code]...

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Creating Multiple Paint Methods?

Sep 5, 2010

im trying to make multiple methods that handle painting on the same form. right now i just got the one and its the built in form paint one:

Private Sub Form3_Paint(ByVal sender As Object, ByVal e As System.Windows.Forms.PaintEventArgs) Handles Me.Paint

but when i go to create my own method i start getting issues with the value of e when i use a method like

e.Graphics.FillRectangle

how do i define e and set up my own private sub paint()

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Inheriting A Class With Useful Methods Or A Creating A Module?

Nov 27, 2009

What is neater / better in your opinion? Inheriting a Class with useful methods or a creating a module?

For example:

vb Module Tools_Module
Public Sub Print(ByRef text As String)
Console.WriteLine(text)
End Sub
End Module

[Code]...

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Extension Methods For Object

Nov 9, 2011

I wonder why it's impossible to create and extension method for Object? I use Excel PIA. The property Cells of Worksheet returns Object (if using with indexes). For example, Worksheet.Cells(1, 1) returns Object type. I know it's a Range object, and I want to cast it to Range. It would be convenient to write following:[code]

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.net - Using Extension Methods From Within An Object's Constructor?

Feb 8, 2010

Consider the following:

Public Module Extensions
<Extension()> _
Public Sub Initialize(ByRef Target as SomeClass, ByVal SomeParam as Something )

[code].....

Why is Case 1 failing to initialize the object as expected?

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Subclassing Object With Shared Methods

Aug 3, 2009

I want to create a subclass of a class that has some shared methods. These shared methods all call one specific method. But I can't redefine that specific method in the subclass. If I try to make it overridable in the parent class, it says that shared and overridable can't both be used.

[Code]...

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Initializing Object Variables - Difference Between Methods

Jan 20, 2009

In 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?

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LINQ To XML Result Object Not Showing Extension Methods

Jan 9, 2012

I have the code as below:
Dim xdTest As XDocument = XDocument.Load(GetXMLPath())
Dim objResult = From xe In xdTest.Elements("Some Element") _
Where xe.Element("strName").Value = strInput _
Select xe.Element("intValue").Value
objResult.
I cannot access any extension methods for objResult, like .ToList() or .First(). The file imports System.Linq and the project is targeted to .NET 3.5. How do I get the extension methods back?

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Sender As Object IntelliSense Only Lists 5 Methods And No Properties

Feb 3, 2012

When you type sender. IntelliSense lists 5 methods and yet if you type sender.Left or sender.top these will work. Why don't these properties show up as available for use via IntelliSense.

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'Object Reference Not Set To Instance Of An Object' While Creating Pivot In Excel

Jun 23, 2012

I'm trying to create a pivot table by opening an Excel file from my drive.But I'm receiving the error saying "Object reference not set to an instance of an object".[code]

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Error - Creating The Form - Object Reference Not Set To An Instance Of An Object

Apr 13, 2012

I'm having this problem with my code and cannot seem to get past it although it was working fine before. The error is "An error occurred creating the form. See Exception.InnerException for details. The error is: Object reference not set to an instance of an object." The code is:

CODE:

I am trying to get information to be pulled out of a database and show in text boxes on another form (frmviewsdets). The error occurs when it gets to the line frmviewsdets.txtsnumber.Text = rdr("StudentNumber") and even when a breakpoint is applied there it just moves on to the next and so on.

I have tried to show frmviewsdets before I pull the data out of the database beut I get the same message.

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C# - Invoking Private / Protected Methods Via Reflection From The Same Object Instance (or Base)

Jan 5, 2012

Is it possible to call a protected method via reflection. I am using this:

Me.GetType.InvokeMember(Stages(CurrentStage),
Reflection.BindingFlags.InvokeMethod,
Nothing,
Me,
Nothing)

Which always calls a method with no params or return. The idea is that the user of my object (transactional processing of business logic) inherits the base class adds in a load of private methods to fire. They then add these method names to a list in the order they would like them fired and the code above will take care of firing them.

It works fine with public methods but not with private or protected methods in the same class (Protected because I have some 'standard' pre built methods to add to the base class). Realistically I could make the methods public and be done with it but my inner nerd wont allow me to do so...

I am assuming this is a security feature. Is there a way to get around this or does anyone have any suggestions on how to proceed but keep my tasty, tasty visibility modifiers in tact?

(NOTE: ITS IN VB.NET but a C# Answer is fine if that is what you are comfortable with).

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Creating An Object Array Of Different Object Types?

Mar 29, 2010

I 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.

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An Error Occurred Creating The Form. See Exception.InnerException For Details. The Error Is: Object Reference Not Set To An Instance Of An Object?

Apr 30, 2009

WTF, here's my code...

Public Class Form1
Dim BIT01 As Integer = BIT_01.Text
Dim Value As Integer = TB_OutPut.Text

[code].....

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Asp.net Mvc - Creating A List (of String) Giving Error" Object Reference Not Set To An Instance Of An Object"

Nov 1, 2011

MVC 3 razor VB.NET project. I have resorted to manual building a list for a drop down box so I can insure certain values are available in the select list and also to control what the first item is in the list. The below is my code snippet for the part that is giving me problems..

[Code]...

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Dynamically Creating Methods For Dynamically Created Buttons?

Mar 15, 2011

I have this code.

Code:
Public Class Form1
Dim NPB As Button
Dim x As Integer

[code]....

As you can see, when I open a program from my menu, a new button will be created with text similar to this, "C:Program ". The button it self will not do anything. How can I create the method at the same time the button it is for is created? Also how can I change the text do that it gives me, for example, CCleaner.exe instead of the whole target path?

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Mvc - Repository Pattern Implements Methods By Adding Add1 But Should Use Methods Of The Baseclass?

Aug 29, 2011

This is the original code in c#

public class CategoryRepository: RepositoryBase<Category>, ICategoryRepository
{
public CategoryRepository(IDatabaseFactory databaseFactory)
: base(databaseFactory)

[Code]...

Does anyone has an idea what i should change to let it work and let my UserRepository use the methods in RepositoryBase while implementing the IUserRepository?

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Making Class Methods Instead Of Instance Methods In .NET?

Mar 29, 2010

I am not sure how clear my question is by the title, but I am trying to make Class methods instead of Instance methods in Visual Basic that way I don't have to waste memory and code creating temporary objects to execute methods that don't need instance variables.

I am not sure if you can do that in VB but I know you can in Objective-C by using either a "+" or "-" sign in front of the method declaration. And in C++ (at least I think, I can't remember) you put the static keyword or const keyword in front of the function.How would I do this in VB if it is possible? Or should I just make a separate set of functions that are not members of a class?

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Creating A New Instance Of An Object?

Apr 24, 2011

Suppose a click event is fired and a particular gridview datasource is set in the code behind page by retrieving a data table from a business logic class.

So programmatically speaking, what is the main difference between the two set of code listed below.
Private Sub btnGetGridViewData_Click(ByVal sender As Object, ByVal e As EventArgs)
Dim myBLL as New BusinessLogicClass

[code]....

I guess my main question is, what is the purpose of creating a new instance of an object in the above scenario?

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Creating Instances Of An Object?

Nov 21, 2006

I'm trying to create 3 instances of the the Workshop selector form for the 3 individuals that I have inthe listbox to appear when I first run the program.

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Creating Object And Assigning The Value To It?

Jun 1, 2012

I have a class defined as follows. How to create Product object with part1 and part2 values in Component Field

Partial Public Class Product
Private ComponentField() As Component
Public Property ComponentProperty() As Component()

[code]....

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Object Is Not Creating An Instance

Apr 9, 2010

My project is done on vb,net& sql2000 but it is not running and showing error -

" object is not creating an instance " what to do ?

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.net - Creating A New Instance Of A Class Object Box()

Sep 29, 2011

my aim is to create a new instance box at the push of a button, the box has strings name and Id to be filled concatenating the auto generated ID i.e. 0 to 210 plus a string "Box" added by the user. I had problems earlier creating a structure within the class box, frankly I am not sure if the code below will work, as i try to run it in VB I get an error indicating that I am using the variables strBoxPositions() and strBoxNumbers() without assigning a value to it. The thing is the strBoxPositions() should automatically be filled by arrPosition() which will be created at the same time the new object box is created and the strNumbers() will be created with empty strings to be filled at latter stage by the used as and when necessary.

how could I initialise those arrays to get the program to run and perhaps ill be able to see if the code works or not, or just correct this code with a better way of code with comments, also if possible some indication on how could I update the strNumbers array inputing the strings one at a time on a text box field.

Public class form1
Public Class Box
Public intBoxID As Integer

[Code].....

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Creating A Public String Object

Jul 15, 2011

i'm having problems creating a public string varialble in a class or module. i am going to be refering to it in many forms so this way i only will have to change the text of the string once and not on each form.Currently when i try to use the new string variable as an object variable from another form, it isnt showing up as an object i can reference. [code]

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Creating A Random Number Or Object?

Jan 23, 2010

I have an application with 6 cars 'racing' across the screen. Ideally I would like the random function to move only 1 of the 6 objects (cars) at one time and then loop until one car reaches a predefined finish line. However I'm not sure if this is achievable. Would I need to create a random number then create if statements?

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Creating A Shared Instance Of An Object?

Feb 13, 2012

I would like to create a global instance of a User Class that can be referenced by all the forms in my MDI application.This object may be set during the login procedure by the Login form but the user attributes are to be available for other forms. For example, MyUser.ID will be required for meeting the audit requirements whenever data is changed.

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Creating Moving Object In Rectangle Box?

Mar 20, 2009

1. I have created a moving object (which is a button) in a form (rectangle box) called "Enjoy Button" and it moves when
2. A specific button named "Start Timer" is pressed...When the "Start Timer" button is pressed,
3. The "xTimer" event is called and the button moves in a rectangle box and bounces of the walls...=animation
4. However, i need to write a For..Next Loop in the
5. "For Next " Button= a button named for next
6. And also put a counter in the loop to control the animation time..
7. The loop should stop at a certain time, and the object too should stop at that time,at a new location

This is what I have so far
Private Sub ForNextButton_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles xForNextButton.Click, xTimer.Tick
Dim MyTime As Integer = 5
Counter = 1000
For Counter = 0 To 1000
xTimer.Enabled = MyTime * 1
' Move the button for a set amount of time
' Exit the loop
Next

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