Get Name Of Class Without Instantiating Object Or Having A Static Method?

Feb 22, 2011

I hate to see the name of the class used as a string parameter like "FileDownloader" in the code, and I would like to use something like this FileDownloader.Name(), where FileDownloader is name of the class.Only problem is that I can't find out how to do that without instantiating object or creating a static method..Is there a way to get a class name in .net without having the object instance and without creating a static method that returns the name of the class?

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Instantiating A New Class Object?

Mar 23, 2010

Is it possible to instantiate a new class object within a Form Procedure where it is accessible to all other Procedures/Functions within the Form Module? For example, I have a Client Class Module that contains properties and Methods that reflect a Client DB Table. All the properties and Methods within this class are Public. So, when I instantiate a new instance within a Procedure, I declare it as such:

Private Sub cmdNewClient_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles cmdNewClient.Click
Try
Dim client as New clsClient

[code]....

Normally, I would declare a new instance of this Class Object at the beginning of a Form Module. I'm trying to do this in order to have more control.

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Class - Call A Method In The Default Instance Form Instead Of Instantiating Another?

Nov 15, 2009

When an instantiated class calls a method in the parent form class, VB.NET starts a new instance of the form class instead of calling the method on to the active one.How do I tell it that I have just one instance of my form class, or that I don't want to create a new instance of the form and just call the method on the already active form?

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Call A C# Class's Static Method ?

Oct 28, 2010

I have a C# dll and want to use it in VB.NET. I'm using C# 2008 Express and VB 2008 Express. I have added a reference in a VB project to the C# dll. When I create an instane of a class in the C# dll, it gives the following error messsage: "Type 'RF.RabinFingerprint' has no constructors". My C# dll code:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;[code].......

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C# - Convert Static Method Call On Object?

Nov 30, 2010

I have some files in vb.net that have "Option Strict Off" to allow for bad programming. When I convert to c# I use "dynamic" until I come back and fix problems, and this works in all cases But now I have this code:

Public Class ContractResults
'Big class definition
Public Shared Sub CleanCache()

[code].....

And in a file with Option Strict Off:

Public Sub VerifyResults(result as Object)
'Here, result is normally ContractResults
'first it check for that then call this:
result.CleanCache()
End Sub

In c# I use "dynamic", but a runtime error pops up when I call "static" method with dynamic reference. In vb.net, I can called "shared" sub from instance, but in c# this is not allowed

Exception:
"Microsoft.CSharp.RuntimeBinder.RuntimeBinderException"
"Member 'ContractTypes.ContractResults.CleanCache()' cannot be accessed with an instance reference; qualify it with a type name instead"

It seems I must convert code to use actual type, but then this means much rewriting of more parts. Is anyone able to show another way?I want to make sure you do not think I can use (result as ContractResults).CleanCache();Because all types that may be passed in have "CleanCache()" method, but do not inherits from anything the same other than "Object". There are many types (30!) that have this "static" method and so that is why it uses Option Strict Off?

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Can't Define A Specific Instance Of Static Method Created As A Java Class

Mar 12, 2011

Under Visual Basic 2010, I am trying to define a specific instance of a static method that was created as a Java class. I have a vendor supplied dll added in as a reference.[code]...

But, I can't seem to define a specific instance of this method. Using "IntegrationMethod.getIntegrationMode()"always returns a value of zero.

There doesn't appear to be any way to "setIntegrationMode" to a specific value.

The documentatoin for this Class as provided by the vendor are shown below.

When I asked the vendor for assistance, their response was: "

Our javadocs for the IntegrationMethod class show that we provide three predefined instances of the IntegrationMethod class[code]...

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Error When Instantiating An Object

Jul 27, 2010

I am in the middle of (trying) to create a Class Library available for use in VB6/VBA. With some assistance received here I have now done the following:Created a Class Library Project in Visual Studio 2010 Express and put the code in a Class Module.Learned I needed this wonderful thing called an "Interface"... Made one of those:)I opened the project properties and went to "Assembly Information" and checked "Make COM Visible".I went to "Advanced Compile" options and targeted .Net 2.0 (it's very simple code).Removed all references expect for "System".Built the project (no warnings or errors) and copied the DLL out of the Bin folder into C:WindowsSystem32 Ran RegAsm /tlb. Everything seemes just fine.I popped open excel to run a quickie test and the TLB is available but I have two problems:

I can see both the class and the interface in the Object Browser/Intellisense.When I try to create an instance of either object (Set obj = New MyObj)I get the error:I can set a reference to the Object and the Intellisense can see it, I just get that error when I actually try to create the Object. Did I miss a step?

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Instantiating Objects Embedded In Object?

Jan 20, 2010

I am having some real issues with this one. I have a class which contains two other objects...but I cannot seem to instantiate those sub objects. Here is the code for my class:

Code:
ption Explicit On
Public Class Boot

[code].....

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VS 2010 Instantiating A Class Using A Name In A String?

Oct 14, 2011

Instatiating a Class using a name in a String?

I have two projects as part of my solution:

Project: Font End
Project: Control Classes

In my front end project i have a string list of all the control classes. I need to instantiate the class into an object using the string name. How can I do this? The class must be of the right type and not just object?

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Populate A List(Of Object) In A Class Method, Where The List Was Passed To The Method As A Parameter

Aug 13, 2011

I'm trying to code a class of RandomNumber. One of the class methods needs to populate a "List (Of RandomNumber)" ... which was passed as a parameter to the method ... with 10 random numbers between 1 and 50. DEAD SIMPLE :)

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C# :: Instantiating New EF Object Throws System.Drawing Reference Missing?

Dec 2, 2011

#1 is C# Class Library, where I have my EF model defined (3.5 sp1) and some public methods.#2 is a VB winforms app.In the winforms app, I have referenced the C# library and added the connection string for the EF model. The problem I am having is that I have a form where the user selected a .txt file to import. On the VB side, I create a byte() from the file, then pass it to a public method cleverly called Process. In Process(), everything runs smoothly until I instantiate the EF model.

using (WorkersCompImportEntities context = new WorkersCompImportEntities()) { ....
Where I receive this error:
Could not load file or assembly 'System.Drawing, Version=1.0.3300.0,

[code]....

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Forms :: Form Object Access From Class Method

Oct 22, 2009

I want a string and a listbox, both which are in a form to be modified by an instance of a class method. Should (could I):

1. Pass the entire form to the class method as parameter.

2. Pass the listbox and the string to the method as parameters.

What's the best approach to get access and modify this string and listbox on the form.

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How To Use BindingSource.Find Method Alongwith .Net Object Class

Mar 7, 2011

I want to search particular item in Binding Source for which i use BindingSource.Find() method, but it throws an exception "This operation requires an IBindingList". My binding source is bind to a .net class object.. I searched over the internet, but could not find the clear solution to achieve this task. The sample class code is given below:

Imports System.ComponentModel
Public Class Department
Private _code As Long

[Code].....

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Why Is Static Method Not Visible

Sep 14, 2011

I have a C# method in my datatier that I am trying to convert to VB.Net. I converted it to VB.Net but when I bring up the datatier class the method is not showing. It has been a long time since i have used VB.Net and forgot alot of things [code]I believe it has to do with the declaration, which i have as:Public Static Function UserActInfo(ByVal _eno As String) As useraccount..

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Strongly-typed Generic Method Invokes Its Argument's Base Class Method Instead Of A Shadowed Method In T?

Oct 19, 2010

Consider a MyForm class that contains a shadowed implementation of Show(). It also contains a CreateForm() method, which accepts an instance of the form and calls the shadowed sub:

[Code]....

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Generate A URL Within A Shared (static) Method In MVC.NET?

Sep 27, 2009

I'm creating a Shared (static) method in ASP.NET MVC so it can be used by any controller in my project. This static method needs to generate a URL. I think I need to use System.Web.Mvc.UrlHelper, but I can't figure out how to call it from within a static method.The constructor seems to want a RequestContext.

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IDE :: Association To Static Class In Class Diagram

Jan 24, 2010

I'm wondering why I can't create an association from a class to a static class in the class diagram editor of VS. Any reason for this?

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Asp.net - .NET: Accessing Static MVC Controller Method From View?

Mar 16, 2011

I've got an .aspx page with this in it:

<%@ Import Namespace="System.Web.Mvc" %>
<%= AssetController.ScriptTag("/js/Community/CommunityWizard.js")%>

And I have an AssetController class:
Imports System.Web.Mvc
Public Class AssetController
Inherits Controller

[Code]...

What gives? I don't understand why I can use this controller everywhere in our ASP.NET Forms/MVC hybrid application, but not in a view.

EDIT: In fact, when I type <% System.Web. into the .aspx view, Mvc doesn't even appear in Intellisense!

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Asp.net - How To Get Classes To Expose The Same Shared/Static Method

Mar 4, 2010

I have a base class with several derived classes. I want all of my derived classes to have the same Public Shared (static) method with their own implementation. How do I do this? Is it even possible?

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Call Form.Close() If It's Not A Static Method

Jan 19, 2012

In Visual Studio 2010, create a VB.net Windows Forms App. Add 2 forms: Form1 and Form2. In the Form1 Load event type Form2.Close(). Now if we look in the method definition Close() is not a static (shared) method. So how is this possible to compile or to work at run time.

Furthermore, do the same thing in C# and Form2.Close(); doesn't compile.

What's going on? Why is this possible in VB.net and what is actually happening when that line of code is executed?

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.net - Prohibit An Instance From Calling Shared/Static Method?

Aug 27, 2010

Is it possible to prohibit an instance of a class from calling a shared/static method?

For example:

I want to allow this:

ClassName.MethodOne()

But I want to disallow this:

Dim A As New ClassName
A.MethodOne()

The reason this is desirable is that in this case it is semantically confusing if an instance can call the method.

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Local Variables In Shared Method Work Like Static Variable In C?

Aug 23, 2011

Will the list in this shared method keep its state throughout the life of the method? Or will a new list be created every time this method is called?

[Code]...

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What Is Equivalent Of A Static Class

Nov 30, 2007

what is the Equivalent of a Static class in VB.Net. Is it Modules?And When i used one of the C# to VB.Net conversion tools then the code "Public Static class Class1 " was converted to "Public NotInheritable Class Class1"

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C# - Reset A Static/shared Class?

May 4, 2009

I've got a shared class (static in C#) which mostly carries some settings data that any class in the application can read and sometimes write. Also there are some static properties which holds some internal states.

Now I want to revert this class to initial stage of it. With all default variables etc. Assume that the user want to reset the current state and start over without restarting the application.

In a singleton model I'd simply renew it with something like this :

Public Sub Reset()
_Instance = New MyClass()
End Sub

However this is not possible in a Shared class. Or should I switch back to Singleton?

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Converting A Static C# Class To VB Module?

Dec 3, 2009

I am trying to convert following code into a VB equivalent so that I can use it with threading my forms and controls.

using
System;
using
System.Collections.Generic;

[code]....

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Equivalent Of A C# Internal Static Class?

Jun 9, 2010

If I have a module in a VB.Net class library, will it's visibility be limited to the assembly? What I'm looking for is the VB.Net equivalent of a C# internal static class.

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Set A Module To Behave Like A Static Class?

Feb 9, 2010

This questions is for VBers, it's irrelevant in C#.

In VB, when you create a module, all it's fucntions and members are available in the scope without need to type the module name, just like all the VB functions (Rnd, Mid, IIf etc.).

I want to create a module but I should have to explicitly write it's name to access it's members, i.e. it shouldn't be loaded to the scope like a namespace.

Update

For example, I have a Module of extension methods, I don't want all it's members to show up on the scope and in the intellisense.

I want it to be available only by instance.ExtensionMethod().

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.net - When Are Inline Static Variables Initialized In A Class

Aug 10, 2010

Suppose we have a class like:

Public Class Question
Private Shared _field as Integer = CrazyIntegersRepository.GetOne()
' Some other useful things go here
End Class

And the method GetOne throws an exception... How can we manage that? Is a good practice to rewrite that into a static constructor? When is the GetOne method going to be executed if we leave it there in the inline _field declaration?

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Class-level Static Variable Per Instance?

Jan 28, 2010

I need a static variable to get a ListItemCollection from a List control (I can do this, but if I don't set it as Shared It's not preserving the values as it should). The thing is that this class is a SharePoint webpart, so I most probably will be using the webpart more than once, and I need this variable to be unique to each webpart, which shared doesn't accomplish.I tried everything you can imagine. I placed a Static variable within a Sub (shared and not shared), I tried it with Properties (also Shared and not shared)...

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Create A Static Class Like System.Math

Mar 6, 2010

I have a module with generic constants, subs and functions.I would like to be able to use the module in multiple projects in one solution.I also want it to work like the class System.Math, where you do not need to declare and instance of the class before you can reference it.[code]I want to be able to call ClassLibrary1.MyGenerics.Half() just like I can call System.Math.Abs()

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