Explicit Add / Remove For Event In Program?
Jan 10, 2011In C# you can define explicit add/remove code when an event is subscribed/unsubscribed.
Is this possible in VB.net?
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Explicit Call To The Data Source .Insert() Method/event?
May 28, 2009I need to explicitly load my data source variables and then call the insert method associated with the data source. The sample VB .net code is listed below. So is it sufficient for me to just call the Insert() method when I am ready to insert my values? Or do I need to create an insert event? You see if I look at the properties window for the data source, there is a lightning bolt icon that will generate events for the data source such as Insert,Inserting,Disposing,Init,Load etc.
Protected Sub btnSave_Click(ByVal sender As Object, ByVal e As System.EventArgs)
Me.SqlDataSource1.InsertParameters.Add("@Title", "Mr.")
Me.SqlDataSource1.Insert()
Explicit Interface Implementation In Program?
Oct 16, 2009How to implement explicit interface implementation in VB.NET?
View 3 RepliesRemove One Event That May Be Exactly Like The Others?
Dec 14, 2011I'm creating a system in VB.net that utilizes Lua via the LuaInterface.
To associate an event in Lua with a function, I can simply do this:
RegisterEvent("tick", function(nt)
if not lcc then return end
if nt>=tt then
[Code]....
how I should change my RegisterEvent Function/Sub and how I should make the DisconnectEvent.
I know this is kind of annoying to try and understand what I'm trying to say. Feel free to post a comment asking for clarification. I'll be more than willing to try and explain it to the best of my abilities. If the LuaInterface has some kind of native way of handling this, I'm open to that as well :)
Remove All Event Handlers In One Go?
Jul 19, 2009Problem: I have a document class which contains a list of objects. These objects raise events such as SolutionExpired, DisplayExpired etc. The document needs to respond to this.
Documents can sometimes exchange objects, but a single object should never be 'part' of more than one document.
My document class contains a bunch of methods which serve as event handlers. Whenever an object enters the document, I use AddHandler to set up the events, and whenever an object is removed from the document I use RemoveHandler to undo the damage. However, there are cases where it's difficult to make sure all the steps are properly taken and I might thus end up with rogue event handlers.
Remove An Event Sub And Then Restore It?
Mar 4, 2011I have a DataGridView and sometimes I use the CellValueChanged Event but othertime I don't want it to trigger. Is there a way that I can remove an event sub and then restore it. I have 5 columns with a ComboBox. After licking one, and then another, the line bellow keeps repeating until stack crashes
[Code]...
Can't Remove Row In Datagrid On Event RowValidating
Mar 6, 2010Can't Remove Row in datagrid on event RowValidating
View 6 RepliesDoes Clear Remove Event Handler
Oct 2, 2011Some controls are dynamically created within a panel. Their event handlers are attached
Dim btn as new system.windows.forms.button
with btn
'set properties
[Code]....
Dynamically Add / Remove Event Handler?
Nov 23, 2010I have a TableGridLayout (6 x 6) which host 36 buttons created at design time.From the 36 buttons, only a handfull maybe needed at anyone time depending on data retrieved from an SQL database.Everytime I need to 'clear' the grid to populate with new items, I clear the text of each button, make it visable if required and then upadate with the new text.On every pass if a button becomes active, I add an event handler to the button like this.[code]...
View 4 RepliesRemove Only One Specific Event Handler In .net?
Dec 13, 2011I'm writing a small 2D engine that uses Lua to control it. I've been setting events up in between the Lua and the VB.net for the past little while here. The problem, I've realized, is that is that I can't seem to remove the events which is screwing up quite a few things (because they are being called when they should be done with). To fix this, I wanted to add some kind of way to remove the specific event handler.
I know how to add an event handler:AddHandler Button1.Click, AddressOf Button1Clicked
But with this in mind, is their a way to remove a specific event handler in the VB.net? I didn't explain this very well: If I have this:
[Code]...
VS 2010 Remove Event Handler?
Apr 1, 2011I have a Timers.Timer called COMTimeout, to which I add an event handler using:
AddHandler COMTimeout.Elapsed, AddressOf TimeoutEvent
however, the handler may also be:
AddHandler COMTimeout.Elapsed, AddressOf SecondTimeoutEvent
I now need to remove the handler, is there a way to do it without knowing the name or do I need to keep track of which handler as been assigned?
Winforms - Remove An Event Handler?
Jun 20, 2012VB.NET RemoveHandler & Anonymous Methods
If I add an event handler like this:
AddHandler s.Click, AddressOf Panel1_Click
How can I can then remove the event handler?
Private Sub Panel1_click(ByVal sender As Object, ByVal e As System.EventArgs)
' Remove code
End Sub
Add And Remove Datagridview With Button Click Event
Feb 27, 2012I want to add and remove Datagridview in VB.NET with button click event. Can it be possible.
View 2 RepliesPossible To Remove A Character From Textbox When Backspace Event Happens?
Nov 8, 2009[code]The RichTextBox's text would act as if the user pressed backspace while typing in the TextBox.How is it possible to remove a character from the textbox when the backspace event happens?
View 2 RepliesForms :: Tabcontrol1.tabpages.remove Not Working In A Particular Event)?
Jun 15, 2010I have an event called "worksheet_selectionchanged" which occurs when a range/cell is selected in an excle file.When the event is triggered, all the tabpages in a tabcontrol should be removed.The code is given below:
Private Sub myWorksheet_SelectionChange(ByVal Target As Excel.Range) Handles myWorksheet.SelectionChange
for each tabpagesToRemove as TabPage in tabcontrol1.tabpages
tabcontrol1.tabpages.remove(tabpagesToRemove)
[code]....
but when ever i select a cell in the excel file, the tabpages seems to be "not removed".
Remove All Eventhandler From Specific Event Of Control During Runtime?
Dec 29, 2009I do have a customized treeview which inherits from treeview. The customized treeview offers - amongst other - the functionality to automatically check/uncheck the child and parent nodes according to the selected node.To do so, I use (or mabye abuse?) the AfterCheck-event of the treeview in the class where the inherited treeview is customized. Code looks like that (Submethods not included):
[code]...
I temporarily remove the AfterCheck-Event in the event-procedure to avoid it getting fired when I programmatically check/uncheck the checkboxes of the treeview. Works fine so far, only problem I see: if another programmer wants to use the customized tree view and tries to make use of the After-Check-Event, he'll get caught in an infinit loop, because his own After-Check-Event (he added himself to the treeview) was not removed and keeps on firing every time a checkbox is automatically checked/unchecked.
How can I remove ALL methods linked to AfterCheck-Event without knowing which method someone added to the treeview-control? My guess is to use reflection and to get the underlying delegate of the AfterCheck-Event by using the .GetInvocationList somehow - but I was not able to make it work.
Feraud
Remove Beep Sound When KeyDown Event Is Executed
Apr 14, 2009How do I remove beep sound that comes with "KeyDown" event. When I press enter after I input a employee Id in the text box, there is beep sound. Private Sub TxtEmpName_KeyDown(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyEventArgs) Handles TxtEmpName.KeyDown
[Code]...
Remove Event Handler For Datagrid Cell Validating
Dec 16, 2009I am having a problem with the cellvalidating event constantly firing when the datagrid is refreshed (since the trigger that fires the event is the originally selected cell losing focus).I would like to remove the event handler for this at certain points of my code so that it does not fire but the examples I have come across on MSDN don't appear to do anything, so I guess I must be doing something wrong.[code]
View 1 Replies64-bit Error With LayoutKind.Explicit?
Apr 7, 2010I run understanding code in my bridge program to call the double dummy solver dds.dll.
<DllImport("dds.dll", CallingConvention:=CallingConvention.StdCall)> _ Public Shared Function SolveBoard(ByVal deal As dealstruct, ByVal target As Integer, ByVal solutions As Integer, ByVal mode As Integer, ByRef tricks As futureTricks) As Integer End Function <StructLayout(LayoutKind.Explicit)> _ Public Structure dealstruct <FieldOffset(0)> Public trump As Integer <FieldOffset(4)> Public first As Integer
[code].....
After filling in the variables, the double dummy solver is called by:
calldll = SolveBoard(dealStr, target, solutions, mode, futureStr)
With a 32-bits machine this code is functioning correct, but with a 64-bit machine the code generates next error code:
System.TypeLoadException:Could not load type 'Dealstruct' from assembly B-Bridge version 1.1.7, Culture=neutral, PublicKeyToken=null' because an object field at offset 20 that is incorrectly aligned or overlapped by a non-object field.
hich adjustments I have to make to the code so it will function correctly on 64-bit machine.
C# - SQL Explicit And Implicit Permissions?
Mar 14, 2012If default 'sa' account has sys_admin permissions for the whole SQL instance and all its databases. On the database itself, if I don't have db_datareader permission enabled, I would assume it doesn't need it as it is implied but I was wondering in .net, is there way to check if db_datareader has explicitly been enabled and not just implied from the 'sa' being a sys_admin.
View 1 RepliesDLL Explicit Run-time Linking?
Feb 25, 2009What are the main functions needed to create a .dll file in vb.net which needs to be Explicitly linked i.e at run time to an application Plz post me an equivalent code snippet in VB.Net
Explicit run-time linkingDLL files may be explicitly loaded at run-time, a process referred to simply as run-time dynamic linking by Microsoft, by using the LoadLibrary (or LoadLibraryEx) API function. The GetProcAddress API function is used to lookup exported symbols by name, and FreeLibrary — to unload the DLL.
[Code]...
Option Explicit Datarow Value?
Jun 14, 2011If a field called X in a datarow called R is an int32 and Y is an int32 how can I make this statement work:
r!x += y with option strict on.
Error 8 Option Strict On prohibits operands of type Object for operator '+'.
Add An Explicit Reference To System.Drawing?
Sep 13, 2011How do I add an explicit reference to system.drawing in visual basic 2010 express console application?
View 1 RepliesIf A Property Has No Explicit Return What Is It Returning?
Feb 27, 2012I have some code I inherited which has a lot of warnings that I would like to get removed. Many are of the form Property '<propertyname>' doesn't return a value on all code paths. I know why it is saying this, I'm just trying to determine what the correct 0 impact way of fixing this is.[code]Unfortuantely if I put this in my code (having changed the local variable name to avoid collisions) it then complains that it is being used before it has been assigned a value.Try to analyze IL in LinqPad (not sure if this is a good test or not) reveals that the empty method is the same as the above that Reflector gave me but it is different from return Nothing and return "".What can I use to get rid of this warning while guaranteeing the code runs 100% the same? [code]I'm not sure what ldloc.0 does here. I'm wondering if it is trying to get something from a register which will be null and if that is therefore the same as ldnull in this situation but I havent' ever really studied IL much before...
View 2 RepliesC# - (.net) Is There Any Intrinsic Difference Between .net Explicit Structs And C++ Unions?
Jul 22, 2009That is the question. Is there anything you can do with c++ unions that you can't with c# Explicit structs?
View 3 RepliesCustom Implicit/Explicit Conversion In 2003?
Aug 16, 2005would like to define some custom Implicit conversion function within my VB class. How can i do that. I have seen samples in C# but not in VB
View 8 RepliesAccess A Data Repeater's Item By Index Instead Of Explicit Name?
May 21, 2010Right now I'm using the following code in my markup[cod]e...
I would like to be able to call it by index instead of explicitly by "SpeakerName". Is there a way to do this in ASP.NET 4.0?
Use VB `option` Statements (explicit/infer/strict) In T4 Templates?
Jul 22, 2010When creating a T4 template in VB.NET, how do you specify Option Explicit, Option Strict,and Option Infer settings? There's some sort of <#@ #> tag for doing this, but I can't find it.
View 1 RepliesCannot Implicitly Convert Type 'decimal' To 'int'. An Explicit Conversion Exists?
Mar 7, 2009Cannot implicitly convert type 'decimal' to 'int'. An explicit conversion exists
View 1 RepliesRemove After String Program?
Dec 28, 2009I just was informed on how to remove before a substring in a string now im curious how to do the opposite remove after right of the string e.g
"this is the test" remove after the is and it becomes "this"
