Shadow/override An Event?

Nov 25, 2009

I would like to shadow/override an event in VB.NET. I do it only because I have to implement in this object an interface, that contains the same event like the base object itself, and I need to keep this base event as is it without modification nor supplementary event additions.How can I do it?

Public Shadows Event VisibleChanged As EventHandler Implements IVisibleChanged
So, I would like to implement a interface that contains VisibleChanged event, but to keep functional the myBase VisibleChanged event too.

[code].....

View 4 Replies


ADVERTISEMENT

Override An Event - TextChanged Event Not To Be Triggered When The CellClick Event Occurs?

Jul 20, 2010

I'm trying to validate a few things in a form I'm building. It has a datagrid with clients info (taken from an access database) and a few textboxes where the user can type some search criteria. The thing is that those same textboxes are used to add new clients to the database and to modify a client's information if one from the datagrid is selected, so I made it that the buttons to insert and modify clients are disabled on load and thenevery time the text on a textbox changes ("TextChanged" event) they become enabled. So far so good. But then I wanted to make it so when a client from the datagrid is selected both buttons become disabled again until the text on a textbox changes (to make sure they're adding a different client and not the same one that was
selected).

I tried using the CellClick event from the datagrid to disable the buttons, but since every time a client is selected from the datagrid the info is shown on the textboxes, this triggers the TextChanged event too, and the buttons become available.So, is there a way I can tell the TextChanged event not to be triggered when the CellClick event occurs?

View 3 Replies

.net - Override Event On A UserControl?

Mar 24, 2010

I have a WinForms application (OwnerForm) with some UserControl. When textbox of UserControl is changed, I want to filter content of a OwnerForm. But how can I make it? I don't want to specify OwnerForm inside the user control. I know a solution to add manually handlers for MyUserControl.tb.TextChanged to some functions on a owner form, but I think it's bad way. I'll prefer to have overridable functions, but I can't imagine how to do it.

View 5 Replies

Override An Event In Program?

Nov 26, 2009

I would like to shadow/override an event in VB.NET v2

I need to do it, because I need to implement a interface, let's name it IVisibleChanged, on the custom objects that does not have defined this event, and on the objects that already have defined this event (custom Button, by eg.)[code]...

View 13 Replies

Form Closing Event Override?

Jun 1, 2011

I have this code that's suppose to override the form closing event, It fires off sucessfully however doesn't prevent the form from closing.

Private Sub Form_Close(ByVal sender As Object, ByVal e As System.ComponentModel.CancelEventArgs) Handles MyBase.Closing
Me.Hide()
e.Cancel = True
End Sub

View 9 Replies

KeyDown Event Or Override OnKeyDown?

Nov 10, 2009

short question: What's better?

Form KeyDown event vb Private Sub MainForm_KeyDown(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyEventArgs) Handles Me.KeyDown End Sub
Override OnKeyDown
vb Protected Overrides Sub OnKeyDown(ByVal e As System.Windows.Forms.KeyEventArgs) MyBase.OnKeyDown(e) End Sub

View 4 Replies

Override An Abstract Event In Program?

Jun 2, 2009

Ok, I've been searching all over the web for an answer to this and I'm getting nowhere. I've found several examples and tried code translators, but they either fail to compile at all (syntax is wrong) or fail to solve the problem. Here is what I am up against:

I am trying to implement a service object class for the POS for .NET library using VB9. Specifically, the BillDispenser class. I define my class and inherit from Microsoft.PointOfService.BillDispenser. As normal, it creates stubs for all the MustOverride (abstract) properties and methods that I need to override (I love that), EXCEPT for the DirectIOEvent. Apparently this event is defined as abstract in the POSCommon base class, but VB doesn't generate a stub for it.

No compile errors are generated from not defining it, but I get the following runtime error as soon as my unit test attempts to load the dll[code]...

View 6 Replies

ClientID When Trying To Override A Control's Render Event

Jul 19, 2009

I'm using ASP.Net 2.0. I have a custom control that is inherits from a 3rd-party vendor's control. I'm trying to override the Render method. [code] What I need is that under certain situations I want to be able to render a Button instead of the original control.But I want the Button to have the same client Id as the control so that I can use javascript to manipulate it.How do I assign a clientid to the button?

View 1 Replies

How To Select And Override Base Class Event

Nov 9, 2011

When editing vb.net forms code in vs2008, how do I select base class events that I want to override? In vs2003 there was a list of overridables in the drop down list but now that list is missing?

View 4 Replies

VS 2008 : Override Form's Activated Event?

Sep 8, 2009

I have to two forms. Form one has several check boxes and when a button is pressed, a second form is opened and certain functions are ran based on which check boxes are selected.The problem is that the second form doesn't show until all of the functions are done.I decided to use the Form's Activated event, which works fine. However, the event fires every time the form comes into focus.Is there anyway to override the event and make it only fire once?

View 1 Replies

VS 2008 Override Picturebox.Load Event?

Feb 2, 2010

Basically, what I want to do is create a new control called EncryptedPictureBox. The image path I would be loading into ImageLocation would be the path of a 512 bit encrypted image. Normally if I load this type of file, it will not display. So I want to override Load() so that I can write the encrypted image to a stream, decrypt it, and then display the stream. I'm trying to save processing time so I don't have to grab the encrypted image, save it to disk as a decrypted image, then display it, then when done, delete the decrypted image from disk.

View 11 Replies

When To Override OnEventMethod Vs Handling The Actual Event

Mar 26, 2011

Correct me if i'm wrong, but i believe most (if not all) classes in the CLR that raise events raise those events from protected methods, for example Form.OnMouseDown... so... In a subclass, when would you want to override the "OnXyzMethod" instead of simple adding an event handler like Visual Studio does by default when you want to handle a controls event?

View 2 Replies

WPF Command Class Override CanExecuteChanged-Event?

May 20, 2011

At the moment I have the following Command class:

Public Class SubscribeCommand
Implements ICommand
Private ReadOnly _vm As MainWindowViewModel
Public Sub New(ByVal vm As MainWindowViewModel)
_vm = vm
End Sub

[Code]...

In a tutorial i read, you have to implement add {} and remove {} for the canExecuteChanged-Event. But how can i do that, with vb.net?

View 2 Replies

Override The Textchanged Event In A User Control Based On A Textbox?

Apr 13, 2012

I want to modify this code or replace it. I want to override the the textbox's textchanged event in a user control.

Protected Overrides Sub OnTextChanged(ByVal e As System.Windows.Forms.ItemChangedEventArgs)
MyBase.OnTextChanged(e)
End Sub

[code]......

View 1 Replies

Anyway To Make Drop Shadow Look Like Its Drop Shadow?

Aug 15, 2011

So I made my form transparent by changing the transparent key to dimgray, change background color to dimgray. I also changed the picture box's BG color to dimgray everything was fine except that the drop shadow on the picture I did was just a grey blob.Is there anyway to make the drop shadow look like its a drop shadow?

View 5 Replies

Override The "GotFocus" And "LosFocus" Event Of The Textbox

Nov 7, 2009

I would like to somehow override the "GotFocus" and "LosFocus" event of the textbox.

Here's the deal. I have big registration form with +- 200 TextBoxes and I want the one that has focus to be highlighter [e.g. let's say change the background color to yellow]. I know, I could write the same code for 200 TextBoxes, but that would be time-killing and I'm really not in favour writing the same thing 200 times as well as with such a huge amount of copy-paste I'm almost sure I would make mistake somewhere.

View 2 Replies

How To Add A Shadow On The Program?

Jun 4, 2012

I wanna put a shadow on my program!Its borderless, because ive used my own graphics.Does anybody have a clue how to add a shadow on the program?(I have made a shadow on the program before, but that didnt work out well, the background of the shadow went white, ive also used the transpacity key and stuff, didnt work)

I am using VB 2010, so if you got any idea's PLEASE let me know.

View 1 Replies

Getting Shadow On All Four Sides Of Form?

Apr 21, 2011

i used a code from here [URL]to get a shadow on my form but it is only on the right side and bottom i want the shadow to cover all four sides.

View 4 Replies

Creating A Drop Shadow On A Group Box?

Jul 22, 2010

So I came across this code that enables a drop shadow on a form in Visual Studio .NET 2008. The code is as follows:

Public
CS_DROPSHADOW As
Int32 = &H20000

[Code].....

I want to create a drop shadow on a group box though. What changes can I make to this and where must I insert it to do this?

View 2 Replies

Hide/shadow A Framework Method?

Dec 6, 2010

I would like to make sure that certain properties/methods of native framework methods are not called in a project I'm working on. I want to use custom methods instead, and make sure that those methods are always used. How would I do that?

These are the details:

In a rather large web project, we have several pieces of code creating and sending email messages using the MailMessage object. I want to perform some additional checking, logging etc whenever an email address is added to either the To, CC or BCC MailAddressCollection
of a MailMessage object. Basically I'd like to make sure that it is not possible, in this entire Solution, to do this: MyMailObject.To.Add(something@somwhere.com), and the same for "CC" and "BCC".

First, I thought about not using the MailMessage object at all, but inherit it and override the methods that allow adding of addresses. I ran into some trouble though when trying to shadow the "To" property, since "To" is a reserved word... And then I realized that it probably wouldn't solve my problem entirely anyway, since there would be nothing stopping another developer (or myself being stupid) from creating an instance of the original MailMessage class and use it at will.

I have successfully created a method which centralizes all the adding of various recipient addresses, but I can't figure out how to prevent the original methods from being used by mistake.

View 15 Replies

Volume Shadow Copy (VSS) Class?

May 9, 2009

I am looking for a way to create Volume Shadow Copies of individual files. I have searched accross the net now for classes and code to use but I haven't been able to find anything. I'm only really starting out in .NET and C#, C++ or any other language for that matter are completely alien to me. Everything I've found on the subject, even from Microsoft VSS SDK is either in C# or in C++. I don't want to use any external programs, everything must run from the single exe file.

Target End Result:

I'd like a file at "\global\class\VSSClass.vb" that houses all the code needed.

Public objVSSClassObject As New VSSClass

For in-line code I'd like it as streamined as possible as it will be used with arrays of pre-set filenames.

objVSSClassObject.CopyFile(srcFile, dstDirectory)

Here's a sample of how the code would be used.

Public VSS As New VSSClass
Dim dstDirectory = My.Computer.FileSystem.SpecialDirectories.Desktop & "\Shadow Files"
Dim FilesArray() As String = {"absolute_path_to_file1.txt", _

[code]...

View 2 Replies

VS 2008 Disable Shadow On ToolTip?

Dec 6, 2011

I want to disable the shadow underneath the standard tool tip ... is this possible?

I want to do this as i want to owner draw it ... and not have it square (as the shadow is ... even when owner drawing )

View 6 Replies

.net - Remove Selected LineShape Shadow Effect?

Mar 23, 2010

Is there a way to remove the LineShape shadow effect when selecting the lineShape? I tried

Protected Overrides Sub OnPaint(ByVal e As System.Windows.Forms.PaintEventArgs)
Dim g As Graphics = e.Graphics
g.SmoothingMode = SmoothingMode.AntiAlias
Dim oldmode As SmoothingMode = g.SmoothingMode
g.DrawLine(_Pen, X1, Y1, X2, Y2)
g.SmoothingMode = oldmode
End Sub

but finally, this have some back effects on invalidation: when moving (in a panel) the line leave traces - does not invalidate properly.

View 1 Replies

Skin My Form - Shadow Edges Are Choppy

Nov 23, 2009

I tried to skin my application and failed. I can get it to work if I don�t have semi transparent pixels on the outside of my form. But I want to use a skin I found on Deviant art that was made for Miranda. It is really nice but and it has a shadow around it. To get it to work in vb.net (I�m using 2005 btw) I have to fill around the main picture and take out the initializing (I think that is what it is called). But then the form�s edges are choppy. How does Miranda allow the shadows but I can�t in vb.net?

I first tried to do it the easy way. I set up some transparent panels with transparent pictureboxes in them and put my corners and middle fills as the backgrounds. I made the form with no border and set the transparent key to transparent. That didn�t work, so I made the form magenta and the transparent key magenta. The outside of the for where the shadow is was drawn on the magenta and the magenta bled through. So I edited the png�s to be magenta all around the form (eliminating the shadows) and it worked, but the corners were choppy.

Then tried some code I found on the net that tried to make a new control as a transparent panel. It was overriding the paint events and drawing to an off screen bitmap. I really didn't understand it and it just showed up as a blank screen. There has to be a way to do this.

View 12 Replies

VS 2005 Hide/shadow MyBase's Properties?

Nov 9, 2009

Is there any ways to hide/shadow MyBase's properties?

Such as MyBase.Location, MyBase.Font?

When I try to declare a local "Height" properly, VS prompts me warning to use "Overloads" instead. But when in form designer/control test run, I still see this property, or any other properties (BorderStyle) which I tried to hide.

View 9 Replies

VS 2008 Rounded Shadow Of Background Image?

Mar 19, 2012

Im using now this code to make shadow for my square backgrounds.

[Code]...

View 5 Replies

Achieve A Drop Shadow Effect Around All Edges Of Form?

May 19, 2009

How would I achieve a drop shadow effect around all edges of my Form?

View 9 Replies

Add An Aero Form Shadow / Glow Effect To My Controls?

Aug 2, 2010

How can i add an aero form shadow/glow effect to my controls?

View 2 Replies

Apply Shadow To Form Inside A SplitContainer Panel?

Jun 20, 2009

I show forms in a SplitContainer Panel, but since the FormBorderStyle is set to none I'd like to apply a drop shadow. The following code works perfect if the form is not inside the panel

Protected Overrides ReadOnly Property CreateParams() As System.Windows.Forms.CreateParams
Get

[Code].....

View 4 Replies

ArrayList - Clone Command Adding Shadow Copy

Jul 5, 2010

I found that if using ArrayList, all clone/CopyTo/Add command are shadow copy, not separate copy. How can I do such that after an ArrayList A is "copied" to ArrayList B, change in ArrayList A will not reflect to ArrayList B?

View 1 Replies







Copyrights 2005-15 www.BigResource.com, All rights reserved