I'm loading a table within an UpdatePanel from a database where the first column contains a radio button.This is done within a DoWhile loop for each record read. Simple enough. I use AddressOf to set the handler for the radio button. The weird thing is that the FIRST radio button doesn't get the handler assigned (by checking View Page Source) but all the rest do. Here's some code:
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I have some code and just need the calling AddressOf to be dynamic
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filterer.FilterSite is the code that I need to replace each time with another method call.
I put several buttons dynamically on a form, and then try to link them to their separate event handlers with the following (simplified) code:
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One way or another I need to link groupID (and one other integer) to the button I am dynamically adding.
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How can I store the address of a function so I can use this later in my code? I want to do something like this:vb
checkStatusWorker As addressof function= addressof functionName
I am using this delegate to invoke my methode:
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When referencing a method's address, should we take into account the overriding or not?
Class B
Inherits A
Overrides Sub Foo
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I wish to check the hard drive space used in a folder on a hard drive. This will happen continuously as a service, so it will be calculating the space used for thousands of folders all the time. I know that this code can be done easily in dotnet, but it seems to take a really long time. Are there any APIs to do this more efficiently, or does the entire looping process have to occur to do this check?
View 3 RepliesI'm currently using the code:
Public
ReplaceThread As
System.Threading.Thread<br/>
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Is it OK to use anonymouse delegates instead of AddressOf?
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i have created a dynamic tabpage and a dynamic tablelayoutpanel inside it then added dynamic textboxes and labels inside the tablelayoutpanel...the thing is , i am having a problem on how to access the value of those textboxes and labels and add them as new columns in the new table(tagpage) in mysql database, i can already create the table in the database but i cant add the new columns in it. heres the code for accessing the values of the labels and textboxes
error: NullReferenceException was unhandled....Object variable or With block variable not set.
sql = "alter table " & tbl_selected(counter) & " add " & frmMain.Controls("TLP_" & SecArrList_sp(counter2)).controls.item(SecArrList_sp(counter2) & "label" & counter).Text & " varchar(100) NULL;"
I would like to bind a DataGridView to a different LINQ query every time (in order to reuse the same form/DGV for different queries), like this:
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but the "Qry", and the number of comboboxes, and their field names would change every time.
im converting a vb code to vb.net from simpleocr site but i can't run this code because of error in sub calling (ret = objOCR.OCRSetOutputHandlerX(AddressOf myOutputHandler)) :
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'AddressOf' expression cannot be converted to 'Integer' because 'Integer' is not a delegate type.here's the code:
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dim strOCRResult as string = ""
Private Sub DoOCR (filename as String)
Dim objOCR as SimpleOCR 'SimpleOCR object
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im converting a vb code to vb.net from simpleocr site but i can't run this code because of error in sub calling (ret = objOCR.OCRSetOutputHandlerX(AddressOf myOutputHandler)):
Code:'AddressOf' expression cannot be converted to 'Integer' because 'Integer' is not a delegate type.I googled around but i did not found any solution here's the code:
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I am converting some VB6 code to VB.Net - specifically callbacks.VB6 code in Form_Load:
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can VB.NET operator AddressOf return Nothing in any case?
View 1 RepliesI am using the EnumWindows API Call, and I've looked at an API website. It can't convert a Delegate (from AddressOf) to a Long, so I made a delegate type for it. (Uh-oh, already.) I need to know something that will take the returned IntPtr and get the window title, so I can activate it with another API call and send some keys.
View 8 RepliesAssuming I have the following code that is iterating over controls in a panel setting various control information.Private Sub BindDataFields()
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[URL] I am trying to run this code in VB 2008 to see how it works (I'm learning) and I am getting an error that says:
UPGRADE_WARNING: Add a delegate for AddressOf AppBarProc
I have method that I execute many times.In this method I have the following AddHandler.
AddHandler mi.Click, AddressOf Context_SortDescending
I would like to replace "Context_SortDescending" with a variable that has the value "Context_SortDescending".I tried using:
Dim methodName as String = "Context_SortDescending"
AddHandler mi.Click, AddressOf methodName
This received an error (AddressOf operand must be the name of a method).
how to convert this vb6 into vb net it has en error on addressof vb.net m_lngPreviousValue = SetWindowLong(p_lngWindowHandle, GWL_WNDPROC, AddressOf WindowProc)
View 2 RepliesBasically i have one TabControl with a form and 2 browsers within one form I have ProBlem To call the dynamic browser to navigate with dynamic Textbox.text
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I'm trying to create an update form whereby if the user leaves the textbox (actionsTextBox) blank, then a default value of "no data entered" will be automatically bound to the textbox prior to updating the sql record. I keep getting this error: Compilation Error: Description: An error occurred during the compilation of a resource required to service this request. Please review the following specific error details and modify your source code appropriately. Compiler Error Message: BC30577: 'AddressOf' operand must be the name of a method (without parentheses). [Code]
View 3 RepliesI am trying change from Delegates to Parallel.ForEach I see the below works fine. Imports System.Threading.Tasks
Sub Main()
Dim secs() As Integer = {2, 3, 1}
Parallel.ForEach(secs, AddressOf Method2)
End Sub
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How can I put AddressOf, from another class?I get this error 'AddressOf' operand must be the name of a method (without parentheses). "Is there an Eval () function in VB.NET? Or how does one do this?
Public Shared Property e As UserControl
Public Shared Sub SetButton(ByVal button As String, ByVal Objekt As [Delegate])
Dim errorbuttom1 As Button = e.FindName("errorButton1")
AddHandler errorbuttom1.Click, AddressOf Objekt
End Sub
I am trying to pass some status from a IP call in a shared sub to a label on my form. This is the current code that i am using:
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I've got my serial/com port code working ok using the standard Port.DataReceived handler:
AddHandler Port.DataReceived, AddressOf port_DataReceived I now want to be able to handle multiple COM ports. Do I have to create multiple copies of the handler sub or is there a way the handler sub can tell which COM port it was called for?
Is there a way to create a delegate instance in .Net using CodeDom? I want to generate something which looks like the following:Dim myDelegate As someDelegateType = New someDelegateType(AddressOf implementingMethod)Below is more info on the context...Original Question:I am using CodeDom from the .Net framework (v3.5 if it matters) to generate a class. One of the classes defines a delegate method which in VB.Net looks like:Public Delegate Function filterByIdDelegate(ByVal obj As Object, ByVal id As Integer) As BooleanI then have a method which will provide the implementation:Private Function filterById(ByVal obj As Object, ByVal id As Integer) As Boolean Return (obj.ID = id)nd FunctionHere's the problem; how do you create an instance of the delegate (using the equivalent of AddressOf for VB.Net)? I am currently doing this (<filterByIdFunctionName> is a string holding the name of the delegate function, `' is the name of the delegate field):
Dim getFunction = New System.CodeDom.CodeMemberMethod()
With getFunction
'Declare delegate instance
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This is a mix of C# and VB.Net. I have a C# class with with 2 delegates:
public delegate string GetSettingDelegate(string key);
public event GetSettingDelegate GetSettingEvent;
public delegate void SetSettingDelegate(string key, string value);
public event SetSettingDelegate SetSettingEvent;
In a VB class I add handlers to the event:
AddHandler _gisCtrl.SetSettingEvent, AddressOf SetSetting
AddHandler _gisCtrl.GetSettingEvent, AddressOf GetSetting
When I try and remove the handlers:
RemoveHandler _gisCtrl.SetSettingEvent, AddressOf SetSetting
RemoveHandler _gisCtrl.GetSettingEvent, AddressOf GetSetting
SetSetting is OK but GetSetting throws a warning:
The AddressOf expression has no effect in this context because the method arguments to AddressOf requires a relaxed conversation to the delagate type of the event.
Here are the methods
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How to fix this and why it is thrown in the first place? The 2 delegates/events/methods look similar enough that I don't know why one is OK and one throws a warning.
I effectively have a List (Of Timer) with each .Elapsed being set to the same AddressOf MyTimerEvent
When MyTimerEvent is called, how do I know which particular timer from the list triggered it?