Use Namespace In Control / Component Development?
Apr 19, 2012
I get the idea of using namespaces to organise classes and code.What I am struggling with is how to use them when developing custom controls and components.using a seemingly arbitary root namepace for a set of related classes.
Namespace MikeCon
Public Class MCButton
Inherits Button[code].....
And is there a 'right' way, or at least a 'better' way of setting up the namespace, i.e how best to use the Project Properties Root namespace and the Namespace statement in code files to get the outcome you want when developing custom controls and components?
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Oct 1, 2010
We have an VB.net application that is being moved from one box to another. It runs great on the old box. The new box is configured the same as the old one but is on newer hardware. When I run the application on the new server it complains that the adobe toolkit that we use can not be found.
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Feb 2, 2012
I have a VB form that contains controls for interfacing with some hardware (video cameras, motors, etc) on the machine it is to be deployed on, but I'm usually not at the location of said machine (it's a 3-hour drive away). I'm trying to work on the project while on my laptop, but obviously the controls will generate all sorts of errors since they can't talk to the hardware.
I was thinking of replacing the control types with my own mock control classes, then use #if directives to control whether I'm building for the real machine or my test machine. Problem is, some of the affected code is in the form designer-generated code section; the form designer automatically tries to "correct" my changes, so I'd have to manually put them back all the time, and try to remember not to commit the form designer's edits into version control.
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Nov 13, 2009
I'm trying to add Windows Media Player to a simple vb 2008 express addition program.When ever I add the WMP my built fails with the following error:
'AxWindowsMediaPlayer' is ambiguous in the namespace 'AxWMPLib'.
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May 17, 2011
I have a problem in VS2010 with a user control i have created, I wonder if this is a known problem and if there is a resolution.
My project has a root namespace of DEV2.MyApp.I have created a user control and dragged it onto my form at design time.In the designer i get an error for that form that goes like this:-
Type DEV2.MyApp.myCtrl is not defined Me.myCtrl = New DEV2.MyApp.myCtrl ()I correct it by removing the namespace DEV2. like follows.Me.myCtrl = New MyApp.myCtrl ()
However, everytime i make an amendment to this form on the designer, the error creeps back. Its really annoying and I dont really want to resort to having to create the control at run time to get around it.
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Dec 20, 2009
i have just quick question (there's not much to elaborate from OP site). Have you any links or ideas, or experiences, what is to be done to class derived from System.ComponentModel.Component, in order to show its rectangle in designed form or control. I maybe satified with just making Component shapy. Anything else should be just game. But actually I have no idea how to draw component from its basics. Any idea or link, or bunch of links very welcomed! Even my capabilities of crunching google links are nothing here.
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Mar 2, 2010
Scenario:A widget developer codes using HTML and javascript.my vb.net application allows developers to create widgets for other users.in javascript you can call window.external to comunicate with the host windows scripting object and I would like to add a helper namespace with many functions to aid the development of widgets similar to windows sidebar's System namespace.
Problem:So I could allow developers to use Window.External.System but how can I just allow them to access System directly without using Window.External?Microsoft adds a System Namespace to windows sidebar gadgets host window which is just an internet explorer server window.
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Mar 17, 2011
I need to read an xml document from a database record into an XDocument object in order for it to be deserialized. So that the deserialization will work, I need to apply a specific namespace to each of the level 1 elements. So XML looks a bit like this:
[Code]...
How do I prevent the blank/empty namespace being added to each child element of the element to which the required namespace has been applied?
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Nov 3, 2011
I am working on a user control. Embedded in my user control is another user control. All of a sudden while programming some simple stuff I get an "out of memory error message". I can no longer load my project (after reboots etc.). I start a new project, copy the control.vb files into a new project folder.. add then add the control to the new project. Ican view the design and the code of the control. When I attempt to drag the control onto another control in the same project I get an error message
"Failed to create component... 'system.outofmemoryexception. Out of memory".
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Jan 29, 2012
Imports System.Windows.Forms
ERROR : 'Namespace' can occur only at file or namespace level
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Apr 10, 2010
The type or namespace name 'Messaging' does not exist in the namespace 'System' (are you missing an assembly reference?)
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Dec 9, 2010
I am having an issue that I hope someone has a solution regard the Component One Spell checker control (version: 2.2.20082.82)... I am currently using the C1.Win.C1Spell.C1Spell control on a windows form application written in VB.net. The user will enter notes into a text box and push a button on the form that will call the .CheckControl() method and passing in the notes text box to perform a spell check on.
[Code]...
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Nov 16, 2011
This class is located in the namespace Acme.Infrastructure.Interface.A class with the same name EventArgs exists in the System namespace.In another project in my solution I have a class Acme.BusinessModules.MyModule.MyClass.When attempting to use the EventArgs class I have to fully qualify the class name or the compiler thinks I am using the System.EventArgs class.My understanding of namespace resolution was that the compiler would first look for the class in the current namespace, and then its parents. It seems that the compiler checks in System before it checks in sibling namespaces. Is it correct that System is checked before the sibling? Or is this behaviour caused by other issues (Imports order?)?
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Feb 3, 2011
I am converting an old Vb6 solution to .net 2.0 in vs2010. I've been working in C# for about 3 years now and .net for 5. I don't recall having this problem in C#, but if I want initialize a readonly collection of DerivedControlFoo Is there a clean way to do it besides creating a sub to do it all off somewhere else? I'd love to be able to do it at the class level at the declaration for readability and simplicity.
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Mar 1, 2010
Create a DLL component for database operation and use created component in another project. Required methods, events and properties
a. Connect
b. Add
c. Delete
d. Save
e. Record navigation (first, next, previous, last)
f. Properties for all database fields
g. Events for validation of database fields.
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May 14, 2011
here is my code
Public
Class
Form1
[code].....
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Jan 8, 2010
I've created a component whose name I'd like to be able to change while editing in the component tray. I've added a Designer action for a name property, but now I'm stuck.
Looking at the property grid, I can see that the name property is parenthesised, indicating that it's not a regular property.
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Dec 8, 2011
I am getting this error,here is my code.
Public Class Sample2
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs)Handles Button1.Click
[Code]....
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Apr 8, 2009
I am trying to load an actixex component in a VB project which was made in Visual C++.n VBA it works fine.In VB6, when I try to load the component on the toolbox I get an "Error 35005"In VB2008 the component can be added to the toolbox, but when I try to place it on the form, the following error occurs: "Failed to import ActiveX control. Please ensure it is properly registered."
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Nov 21, 2009
I am searching for the Component Class. When I go to "Add New Item" ,in my project their is no Component Class Item in VS 2008. I would like to Drag and Drop control onto my new class and I can't see how to do this ?
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Feb 3, 2011
As I say, I've got an application which I'll refer to as "AppName" (note the upper case 'A' and 'N') which, for example, attempts to reference "My.Application.Info.ProductName". Adding a breakpoint and putting a QuickWatch on that call shows the error:
[Code]...
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Feb 4, 2011
Is VS 2010 just IDE features - or do I need to use it to target more recent framework versions?Starting a big project and want to make sure I'm aware of what VS 2010 offers over VS 2008.
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Mar 6, 2010
We are in the process of creating active-x controls used within our application. Since Microsoft stopped supporting classic Visual Basic, is it wise to use Visual Basic to develop the Active X control or the latest VC++/ATL/MFC libraries provide more feature where we can create controls faster by leaving Visual Basic flexibility?
We will not be able to use .NET/VB.NET/C# since the application is supposed to work inside containers and containers may not support latest .NET runtime.
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Mar 31, 2010
I am working on a VB6 project and my organization is planning to upgrade the technology from VB6 to VB.net. As I am new to VB.net windows application development, I dont know where to start and what to include in code. I have read that VB.net windows applications code should have AssemblyInfo, CultureInfo, Windows Security authentication etc. But I have still not found any article, code sample or VB.net windows application sample that could give me a complete list of features that an organization level VB.net windows application must have.
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Feb 18, 2010
I am completely new to ASP.NET programming, and was asked to work on a small project involving ASP.NET, VB (which I am new to as well) and Microsoft SQL Server 2005.Being used to php/java I was hoping to find some kind of similar API to php.net and the javadoc. It would be very useful to have as I would prefer to work with a text editor, instead of using DreamWeaver or Visual Web Developer.In the project I basically only need to use ASP.NET to read from a SQL 2005 database and write to JSON files. where to find a clean and decent API to work with?
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Jul 18, 2010
Which language, VB.Net or C# is the best language to choose for development right now? Needing users to have the .Net framework is something that I see as a drawback to Vb.NET, but what are the pro's and con's of each language? What can be achieved with one but not the other?
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Jun 9, 2010
I know this might sound a little silly. but I'm confused as to what language does sharepoint code behind uses? do they use vb or c#? or is it possible to use eithe
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Feb 17, 2009
I am new developer and i need code for my tools which i had to develop for my desktop Application like pan add data show attribute table
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Oct 8, 2010
I've programmed a text editor and controlled through its sound as a program, but I want to distinguish it from other software
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Jan 12, 2010
I currently develop VB programs on a Dell Dimension 9150 with XP Pro SP3 that I bought in 2006.I use my computer to develop VB 3.0 to VS 2010 programs. I also use Microsoft Office 2007, Expression Studio 4.0 and other email and internet searching and reading.I'm not a game player or music player. I mainly do just development and other utilities to aid in my programming efforts.
I am going to buy another computer and I was wondering what others would recommend as far as how much memory and hard drive space
and which processor to get. I would also like a recommendation as to which operating system to get, Windows 7 I'm sure, but which version?
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