Declare A WithEvents Class In Windows Form Designer Which Is Not Control Base

Jun 4, 2011

I am making a TabStrip control to hold a number of tabs just like TabControl, but only with the tabs, no page. The control has a "Tabs Collection", which stores a list of "Tab" class. "Tab" is not inherited from Control, but each tab has its events. So when the user add a "Tab" in the "Tabs Collection", each "Tab" instance should have a (Name) identifier, which user can access it in the code, and with WithEvents keyword so users can add event handlers to each "Tab". The expected out come should similar to this:

Friend TabStrip1 As TabStrip
Friend WithEvents t1 As Tab
...
Me.TabStrip1.Tabs.Add(t1)

[Code]....

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Modify Designer.vb (form Designer) To Remove A DataSet Control From Winforms Windows?

Jan 27, 2011

I am attempting to update an existing winforms application, that was created with a dataset control on all the winforms pages. I have ported it from VS 2008 to VS 2010 and I need to update the database section and connect it to the SQL backend using traditional code method.In the Solution explorer, when I click on the Dataset files, and click "Exclude From project" I am unable to build the project.Is it advisable to comment out the code lines that refer to the dataset in the .designer.vb files?

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VS 2008 Error "WithEvents Variable 'Move' Conflicts With Event 'Move' In The Base Class 'Control' And Should Be Declared Shadows"

Sep 3, 2010

What does this error mean? I havent modified anything in the designer code, but its giving me an error? WithEvents variable 'Move' conflicts with event 'Move' in the base class 'Control' and should be declared 'Shadows'. The error relates to Friend WithEvents Move As System.Windows.Forms.DataGridViewCheckBoxColumn

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Error - Base Class 'System.Windows.Forms.Panel' Specified For Class 'MenuButton' Cannot Be Different From The Base Class 'System.Windows.Forms.UserControl'

Mar 12, 2010

When I do this

Public Class cInherits : Inherits Panel

I get this: Base class 'System.Windows.Forms.Panel' specified for class 'MenuButton' cannot be different from the base class 'System.Windows.Forms.UserControl' of one of its other partial types.

How do I inherit?

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Must Declare A 'Sub New' Because Its Base Class

Jul 17, 2010

I have a class library that have a lot of classes, in every class I have "Inherits LINQDataContext". And In my xx.designer.vb file I have...

Public Sub New()
MyBase.New(Global.My.MySettings.Default.DbConnectionString, mappingSource)
OnCreated()
End Sub

But I get a lot of "Class 'xxxxx' must declare a 'Sub New' because its base class 'LINQDataContext' has more than one accessible 'Sub New' that can be called with no arguments." errors

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Deep Clone Of Object With Base Class System.Windows.Forms.Control

Apr 18, 2012

I have an object (a third component gridview) which is serializable, and I need a deep clone of this object. I have the following code which throws the exception."The type System.Windows.Forms.Control in assembly System.Windows.Forms, Version=2.0.0.0, Culture=neutral, PublicKey Token=b77a5c5 61934e089 is not serializable".So the gridview's base class is System.Windows.Forms.Control, which is not serializable. How can I get a deep clone from the gridview? [code]

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VS 2008 Partial Class Files For Windows Forms Or Any Other Designer-generated Control?

Sep 24, 2009

I have cooked up my first iteration of a code generator which creates the basic Entity models from a SQL Database Schema. Currently, It will scan a SQL Db Schema, and create .vb code files complete with private members and Public property declarations for every User table in the Database. My next step is having it add the basic CRUD procedures as well. Are we mere mortals able to access whatever technology allows the Partial class files created by vs to be hidden/Linked to their "parent" files, such as the Partial Class files for Windows forms or any other designer-generated control? My thinking is that it would be handy to be able to re-generate code files from the database if necessary to reflect changes in the schema, without overwriting any other properties or methods added to a class in addition to those derived from the database. SO I am hoing I can have the Auto-generated output go to a Partial Class file, and then use a regular class file of the same name for the rest of the code. My Concern is the multiplicity of files that might result, so I was hoping it is possible to "tuck them in" to the parent code file in the Class View.

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WithEvents Variable 'PreviousPage' Conflicts With Property 'PreviousPage' In The Base Class 'Page' And Should Be Declared 'Shadows'?

Feb 1, 2012

I am converting an application from vb.net 2003 to 2005. I got the following warning and need help how to resolve it. withEvents variable 'PreviousPage' conflicts with property 'PreviousPage' in the base class 'Page' and should be declared 'Shadows'

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VB Silverlight For Windows Phone "Handles Clause Requires A WithEvents Variable Defined In The Containing Type Or One Of Its Base Types"

May 16, 2012

when i am selecting form the xaml file a button and then tap event from the right (in order to set the tap event) it auto generates this sub :

[Code]....

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Form Inheritance - Error1Base Class 'MenuStrip' Specified For Class 'Lesson2' Cannot Be Different From The Base Class

Apr 15, 2010

I have put this code in the global form Inherits System.Windows.Forms.Form. And then in the form that will inherit this from the global Inherits MenuStrip. "MenuStrip" is what the global form is called. But keep getting this error: Error1Base class 'MenuStrip' specified for class 'Lesson2' cannot be different from the base class 'System.Windows.Forms.Form' of one of its other partial types.

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Create A New Class That Inherits From The Base Form Class And Define A New() Method With Parameters?

Oct 1, 2008

I've been creating short test apps repeatedly to try to understand some of the concepts in VB.NET.For the most part it has been illuminating.I read Bucky's .NET knowlegebase tutorial on passing objects as parameters to newly created forms. He shows how to create a new class that inherits from the base form class and define a New() method with parameters Extending the concept I thought about doing the same thing with a form that was created at design-time (In this case Form2).

[Code]...

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Creating A Base Class For Windows Services?

Jan 16, 2012

In our application, we have a number of Windows Services (more than 30) that must run behind the scenes to process data at given times throughout the day. I was attempting to create a BaseService class that I could inherit from that would log to our database when the service started or stopped as well as some other common functionality. However, I ran into a show stopper in trying to create BaseService as MustInherit as we have a number of MustOverride properties. The issue lies in:

<MTAThread()> Shared Sub Main()

Our code is all in VB (as you can probably tell). Given that it is a Shared method, I cannot have it be overriden (i.e. make it MustOverride). Without this method, the code will not compile, however it will not really work in the base class. The code in this method is:

Dim ServicesToRun() As System.ServiceProcess.ServiceBase
ServicesToRun = New System.ServiceProcess.ServiceBase() {New BaseService}
System.ServiceProcess.ServiceBase.Run(ServicesToRun)

The BaseService (the name of my base class) cannot be created because it is specified as MustInherit. And therein lies my problem. I cannot create this in the Base Class and cannot override it in the inheriting classes.

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C# - Using A User Control In A Base Page Class

May 21, 2009

I have a base page class that inherits from Page. We'll call it SpiffyPage. I also have a user control called SpiffyControl. I then have an aspx page, ViewSpiffyStuff.aspx, that inherits from SpiffyPage. On page load, the SpiffyPage class is supposed to inject a SpiffyControl into the aspx page. The problem is that SpiffyControl is a user control, and to instantiate that in the code behind one has to access the ASP namespace, sort of like: ASP.controls_spiffycontrol_aspx MyControl;

But SpiffyPage isn't an aspx page, it's just a base page, and as such I can't access the ASP namespace, and I therefore can't instantiate a SpiffyControl in order to inject it. How can I achieve my goal?

Edit: One important point is that I must have a reference to the actual control type so I can assign values to certain custom Properties. That's why a function like LoadControl, which returns type Control, won't work in this case.

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Asp.net - Handles Clause Requires A WithEvents Variable Defined In The Containing Type Or One Of Its Base Types?

Oct 6, 2011

I get the error

Handles clause requires a WithEvents variable defined in the containing type or one of its base types.

in the following code..

Public Sub selCurrentManuf_SelectedIndexChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) _
Handles selCurrentManuf.SelectedIndexChanged
End Sub

The drop list to go with it is the following...

<asp:DropDownList
OnSelectedIndexChanged="selCurrentManuf_SelectedIndexChanged"
selectedvalue='<%#Container.DataItem("c1_manufidcurrent")%>'

[code]....

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Handles Clause Requires A WithEvents Variable Defined In The Containing Type Or One Of Its Base Types?

Aug 23, 2009

I created a lable to handle DateTime = Now, It works fine. but when I moved it inside a FormView I Get the following Message. Handles clause requires a WithEvents variable defined in the containing type or one of its base types?

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Inheret A Base Class Control And Include That In An Asp Page?

Sep 7, 2011

I didn't realise there was a specific vb.net for asp section in the forum. I'm not having much luck getting the problem solved in that other subforum.

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Error - Error2Handles Clause Requires A WithEvents Variable Defined In The Containing Type Or One Of Its Base Types

Oct 19, 2010

Public Class Form1
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Click, Open.Click,Name.Click
SelectVid.ShowDialog()
End Sub

[code]....

I keep getting this error:

Error1'.' expected.
Error2Handles clause requires a WithEvents variable defined in the containing type or one of its base types.
Error 2 is also error 3

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Error : Handles Clause Requires A WithEvents Variable Defined In The Containing Type Of One Of Its Base Types

Mar 25, 2010

I am in the processing of moving an app from VB to C# but some of the classes I will just be moving to VB dlls to access from the main C# app. In doing this I am trying to get the VB dlls to utilize the main C# class lib. In this C# lib I have an abstract clase called base process, it sets up a background worker and handles all the progress tracking, errors, and even reports an ETA. To use this in a derived class in C# you would just do this...

public class SomeLongProcess : Common.Multithreading.BaseProcess
{
public void start()

[code]....

The problem is that if I do the equivelant in VB I get an error "Handles clause requires a WithEvents variable defined in the containing type of one of its base types". Well I can't do a WithEvents in the base class because it is C# so..

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VS 2010 : Handles Clause Requires A WithEvents Variable Defined In The Containing Type Or One Of Its Base Types

Aug 26, 2011

I am trying to follow this thread

[URL]

and I have it pretty close but have one error.

Quote:Handles clause requires a WithEvents variable defined in the containing type or one of its base types.

That error is on both of these, in blue

Private Sub SpellChecker1_DeletedWord(ByVal sender As Object, ByVal e As NetSpell.SpellChecker.SpellingEventArgs) Handles SpellChecker1.DeletedWord
'save existing selecting

[code]....

I have added the reference, I have also added them to the toolbox. My dictionary is all set. What did I miss?

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C# - Handling Master Page Panels Within Base Control Class?

May 30, 2012

I have admin module. This module have one master page which has the no of panels at left side. I have to make this panels visible and invisible with base control class which is constructed in VB language. I'm working with asp.net 2.0 with c# web site.

how do i construct this base control class and manage panels with Master Page on link button click event.

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VS 2008 Set A User Control (or A Class With A Few Properties) To Appear In The Tan Bar At The Bottom Of The Designer?

Apr 5, 2010

How do I set a User control (or a class with a few properties) to appear in the tan bar at the bottom of the Designer? I have tried googleing it but, I don't know what that bar is called (Kinda Hard to Google without know what to Google)

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Error - Handles Clause Requires A WithEvents Variable Defined In The Containing Type Or One Of Its Base Types.D:Shipping

Nov 22, 2011

i am getting errors on last two event handlers. what did i do wrong?

Error - Handles clause requires a WithEvents variable defined in the containing type or one of its base types.D:Shipping ApplicationShipping ApplicationForm1.vb75136Shipping Application
Error - 'PrintDocument1' is not declared. It may be inaccessible due to its protection level.D:Shipping ApplicationShipping ApplicationForm1.vb1119Shipping Application

[code]....

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VS 2008 Button_Click Error:Handles Clause Requires A WithEvents Variable Defined In The Containing Type Or One Of Its Base Types

May 11, 2009

Just upgraded a VS 2005 ASP.NET 2.0 website to VS 2008 ASP.NET 3.5. There was an error on the Sub Button_Click. It seemed to be a minor error, the website and the button worked just fine, as usual. What does the error mean?

Protected Sub btnDEreports_Click(ByVal
sender As

[code]...

Error 20 Handles clause requires a WithEvents variable defined in the containing type or one of its base types.

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Define The Base Class Of A Form At Runtime?

Apr 29, 2010

I'm developing a software that handles very specific regional standards. In one part of the country they have different standards for entering this data than they do in other parts of the country. In fact there are hundreds or thousands of possible configurations that would be best in various regions.

The solution I've come up with is to write a program that can load different control configurations with the supporting code to its main form at runtime. I do not know how to accomplish this. Would I use visual inheritance at runtime? Would I use a plugin system? I just need to potentially allow a power user to design thier own interface or to modify an existing interface to better suit thier needs.

Edit: Is there a way to define the base class of a form at runtime? Could I create user controls in a plugin and pass them in to the host program?

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VS 2005 Using A Common Base Class For Form And Usercontrol

Aug 10, 2009

I happen to have these common procedures which I want to be used in my forms and usercontrols, with the form I can put those procedures in the base form which is being inherited but I happen to have a need to use those same procedures in my usercontrols, is there a way that I can have a common base class that I can use both for my form and usercontrol? I haven't used yet a base usercontrol since my usercontrols will not look the same so I have to put those procedures in each one of them and I find it rather cumbersome.

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Declare Events On Class Library (dll) And Catch Them On Form?

Nov 21, 2009

I need set events on a class library and catch them in an form.

For example, I run a sub in the dll and I need "receive" the event that the sub in the class is running.

The dll is creted by me in vb, but i don't know how raise events on it to be catched in the form.

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Cannot Find Windows Form Designer

Sep 21, 2010

I lost my Form. All I see is the underling code I can't find the tab that alow me to draw objects and labels to my form.

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Declare That The Input Is In A Certain Base?

Dec 11, 2011

I am working on an Electronics convertor to convert inputs between the bases. My question is whether or not their is a way to declare that the input is in a certain base and not the default base 10.

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Load Windows Form From Data Base?

Dec 24, 2009

i want to save the form name in data base and load form using that saved name. How would we achieve this task?

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Can't Find Windows Form Designer Code

Aug 25, 2010

On a recent project I stumbled across a page of code that looked unfamiliar, but which evidently was the code behind my form design. I'll copy and paste an excerpt to show you what I mean:

'Required by the Windows Form Designer
Private components As System.ComponentModel.IContainer
'NOTE: The following procedure is required by the Windows Form Designer

[code]....

I thought this was a useful way to back up my project via email because it's in text form. But now I can't find the same information. I've looked in the Object Browser but couldn't find it anywhere. I think I stumbled on it the first time by right clicking Go to definition, but now that doesn't take me anywhere if I click on say form1. So where will I find this mysterious page that has all the form items information in text, not graphic form? Can't find it anywhere.

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