Invoke A Function With Parameters?
Jan 30, 2012I use this code to invoke a function from a string, which I build in my application:
Public Class Form1
Dim f As New Foo
Dim methodName As String
Dim result As Object
[code]....
ADVERTISEMENT
Function That Takes ByRef Parameters Using Control.Invoke ?
Nov 10, 2005I'm currently invoking a function that takes ByRef parameters using Control.Invoke (which I notice specifies the Object parameter array to be ByVal) but the array of parameters I give it isn't updated by the function. Is this possible with VB.Net 2003 or must there be some error in my code?
View 5 RepliesForms :: Update RichTextBox With Invoke Using Parameters
Oct 5, 2009I'm facing the problem of updating a RichTextBox (RTB) from a thread with parameters, I used invoke and methodinvoker:
[Code]...
How To Use Late Binding To Invoke Method With ByRef Parameters
May 22, 2009I have a COM component that I want to call using late-binding from VB.NET (using Primary Interop Assembly - PIA method). My IDL signature for the COM method looks like:
HRESULT Send([in]BSTR bstrRequestData,
[out]VARIANT *pvbstrResponseData,
[out]VARIANT *pvnExtCompCode,
[out,retval]int *pnCompletionCode);
So 2 'ByRef' parameters in VB.NET lingo, and a return value. I attempt to invoke this method like so:
Dim parameters(2) As Object
parameters(0) = "data"
parameters(1) = New Object()
parameters(2) = New Object()
Dim p As New ParameterModifier(3)
[Code] .....
This fails spectactularly with an exception: {"Invalid callee. (Exception from HRESULT: 0x80020010 (DISP_E_BADCALLEE))"}
I assume this means I'm doing something wrong in my parameterMods array. Because if I comment out setting any value of the ParameterMods array to 'True' - it works. It of course doesnt update the parameters that are [out] parameters and so it's not working as intended. Is there something else to consider since the method also has a return value? The MSDN example pretty much does exactly what I am doing, with the exception that example did not have a return value.
Get The GET Parameters And POST Parameters In Just One Function?
Aug 6, 2011is there a way to get the GET parameters and POST parameters in just one function or Collection in ASP.NET? Like using $_REQUEST in PHP? I'm using VB.NET.
View 3 RepliesSetting A Variable To Accept The Result Of A Function By Calling The Function With Many Parameters
Feb 17, 2011I'm currently working with a client's VB.Net code, which was developed for them by a small development shop a few years ago and which they purchased and have been maintaining and uprgrading since. This client's primary developer is out on indefinite (likely permanent) medical leave and I'm now filling in until they bring in a full timer (as I'm a contractor here). My current task is to add some functionality to a the VB.Net code they purchased. I'm finding practices and techniques in the code that absolutely baffle me and can't make the code do what I want. I'm starting to wonder if it's me and was hoping to get some thoughts on the code I've encountered.
For example: Setting a variable to accept the result of a function by calling the function with many parameters, clearing the parameters in the function, setting them to some value, calling another function with those new values, then never using the values returned by the functions. I'll add a code snippet in the first comment since this is already getting long.
Multithreading - Me.Invoke Doesn't "Invoke" - Threads Stall On Invoke Statement
Mar 16, 2010I've got the following code:
[code]...
The problem is that, when I call the "SetStatusBarText" sub from another thread, InvokeRequired is True (as it should be), but then my threads stall on the Me.Invoke statement - pausing execution shows them all just sitting there, not actually invoking anything.
Invoke A Javascript Function Through COM Interop?
Aug 11, 2009I have a VB.net class registered for COM interop which I'm instantiating within an HTML page using the following code:
<script type="text/javascript">
var MyClass = new ActiveXObject("Namespace.TestClass");
</script>
[code].....
Invoke Ctrl + F Function For Searching?
Feb 6, 2010I wanna invoke a function when user presses ctrl+F .The function works same like searching a string in word or notepad but in my project i m searching whether entered string exist in datagridview. How to get the key code in vb.net
View 4 RepliesInvoke A Function Unknown At Design Time?
Sep 17, 2010is it possible to invoke a function which name I know at runtime only.
View 2 Replies.net - Which Cross Threading Invoke Function Is Better For A Control That Is Inherited
Nov 9, 2009I have a relatively simple question regarding the best way to call the DataGridView.Rows.Add function when it is inherited into the current control. Which is the best way to make the call to the inherited control? Call it directly in the invoke or call it using recursive-like function? They both seem to produce the same result, a row gets added and the quantity is returned, but which is the most efficient?The delegate: Private Delegate Function ReturnDelegate() As Object
The two ways are:
A)
Private Overloads Function AddRow() As Integer
If InvokeRequired Then
Return CInt(Invoke(New ReturnDelegate(AddressOf AddRow)))
[code]....
Invoke Parameterized Function Delegate From Background To UI Thread?
Oct 4, 2010What is the Invoke syntax to marshall data from a background thread receive callback method to a function on the UI Thread?(Form1).
Public Class Form1
MyDelegate = New DisplayData(AddressOf DisplayData)
Private Sub Form1_Load()
MyDelegate = New DisplayData(AddressOf DisplayData)
[code]....
Convert String To Form Object To Invoke Function Using 2008?
Mar 1, 2012In My project, i have Multiple Forms in which same Function name with return values. i like to convert the String name to Form Object and try to call the user defined function in the corresponding form from the Module I am using vb.net 2008 .
View 3 RepliesVisual Studio 2008 - Invoke Onclick Function In Html From .net Or C#?
Mar 15, 2010I am trying to invoke the onclick function in an html page that displays content. I am using the httpwebreqest control and not a browser control. I have traced the function and tried to find the link it calls but looking at the code below I tried inserting the link into the browser with the main url but it does not work.
[Code]...
Getting Parameters Out Of A Function
Jul 20, 2009i want to get all available midi device by name. i found this: Declare Function midiOutGetID Lib "winmm.dll" (ByVal hMidiOUT As Integer, ByRef DeviceName As String) As Integer
but: how do i get these informations now?
Debugger When A Function Has A Lot Of Parameters?
Jan 21, 2010where the VS debugger refuses to show certain field types including dates.My call stack contains FunctionA which calls FunctionB. FunctionB has about 45 parameters and many of them are dates.When I step into functionA,
1. the debugger refuses to show a date variable when you hold the mouse over it. It just shows {Date} instead of a value
2. If you do quick watch on that same variable, it also just shows {Date} instead of a value
3. If I do ?variablename in the immediate window, I get "System Error &H80131c23&"
When I comment out the call to functionB, the date variables all show correctly in all the above methods. I will stress that the code has not yet reached functionB, just its very existence in code screws up the debugger.I'm thinking this is a memory issue and maybe vs debugger can't cope with a huge function stack frame dataspace.devenv is only using 268Meg of ram on a 2Meg box, with not much else running. Thats reasonable for this size of project.
Return Two Parameters With Function?
Jul 6, 2009is there a way to return two parameters with function ?something like
Private Function blah() as string
Dim hl as String = "Hello"
dim tr as String = "There"
[code]....
Add Description To Functions And Function Parameters?
Apr 19, 2011I'm writing a VB.NET function with a ton of overloads. I've seen that most .NET functions have parameter descriptions in IntelliSense. For example, when typing in String.Compare(, IntelliSense says Compares two specified System.String objects and returns... you get the idea. This description changes and you click through different overloaded versions of the same functions. When you start typing in something for a parameter, it describes the parameter you're currently inputting as well. Example: strA: The first string to compare..
View 5 RepliesArgument Not Specified For Parameters Of Public Function
Feb 19, 2011I have to create a program that finds the total cost for pizza, fries, and soft drinks, and places that in a list box. So far, though, I'm stuck. I have this code so far:
Public
Class frmBill
Private
Sub btnTotal_Click(ByVal
sender As System.Object,
[Code] .....
The errors that I am getting are:
"Argument not specified for parameter 'D' of Public Function totalBill(P As Double, F As Double, D As Double)
"Argument not specified for parameter 'F' of Public Function totalBill(P As Double, F As Double, D As Double)
"Argument not specified for parameter 'P' of Public Function totalBill(P As Double, F As Double, D As Double)"
Function To Return The Parameters As Array?
May 20, 2010Dim oList as new Hashtable
oList.Add("1","Value1")
How can I create a a function to return my objects like the above one.
[code].....
How To Remove Unknown Function Parameters
Aug 23, 2009i have a function that i can't tell how many parameters i need to pass into it (could be anywhere between 0-10+), how do i handle this ?
View 7 RepliesHow To Send Parameters Array In Function
Jul 17, 2010i am using XML as database, so updating or inserting diffrent XML's currently i am manage a seprate class for seprate XML file, this process consuming my lot of time, i want to create a genrelize class. currently according to the XML need i am sending two, three, four or five parameter in my function.
now i want to send array of the parameter to my function, so becoz of this thing i could mange all of my functions via a single class...
i am sending u the example what currently i use now...
Public Function Update(ByVal Item_ID As Long, ByVal ProductName As String, ByVal Price As Long, ByVal Path As String) As Long
Try
[Code].....
IDE :: Pass Parameters To A Function Using Delegates?
Feb 8, 2010Can we pass parameters to a function using delegates
Private Sub UpdateLabel(byval text as string)
If Me.Label1.InvokeRequired Then
Me.Label1.Invoke(New MethodInvoker(AddressOf UpdateLabel))
Else
Label1.Text = text
[Code]...
Passing Parameters To Delegate Function?
Nov 21, 2010I need to convert the following C# code to VB.NET:
public bool TryGetRewriteMatch(UrlContext url, out RedirectMatch match)
{
// NOTE: Normally this would use regular expression matches, cached database
[Code].....
However, I need to reference Url and ProductID in the function and I don't know how to pass them as parameters or get their values from the original function.
Asp.net - SQLServer INSERT Getdate() Function Using Parameters?
Jul 8, 2011What is the preferred method of adding the current date/time into an SQL Server table with INSERT Command and executenonquery? I'm expecting something like ...
cmd.Parameters.Add("@theDate", SqlDbType.VarChar, 20)
cmd.Parameters("@theDate").Value = "getdate()"
Calling A Vb Function With Optional Parameters With A C# Call?
Nov 3, 2010I am interacting with VB code on a different tier, using a client-side c# program. The VB function signature looks like this:
Public Sub toggleExclusion( _
ByVal mouse As Double, _
ByVal study As Integer, _
[Code]....
I get an error saying no overloaded method of toggleExclusion takes 2 arguments?
Command Parameters Procedure Or Function Has Too Many Arguments Specified
Nov 4, 2009I don't know where the extra character 'N' is coming from, there should only be one parameter coming from my SP which is the ID:
cmd1 = oStringConnection.SetCommand(sqlConnectMain, _
cmd1, "TestStoredProc", _
DBConnections.myType.cmdAsProc)
[code]....
When I ran the SQL Profiler, I found this:
exec TestStoredProc @StudentID=N'12345'
Declare Many Parameters Are Array Type In Function?
Dec 10, 2009Public Function manyarrays(ByVal ParamArray ints() As Integer,ByVal strs() As String) End Function But it is error . How can i fix it ?
View 3 RepliesShow Probable Parameters In Intellisense When Using A Function Or Sub?
Feb 18, 2012Suppose I have a function that accepts a string as parameter. But the parameter has a limited number of values (i.e. I've defined the function to work with only say, four exact strings). What I want is that when the user types the name of the function and starts the parentheses, the intellisense will show up giving the values that are defined in the function. Its just like a function that accepts a boolean parameter. The intellisense shows up giving the two values "True" and "False" when using the function.
View 2 RepliesInvoke An Instance Function Delegate On An Instance Of A Generic Type?
Aug 4, 2010D is a dictionary whose entry values are of Type T..What I'm attempting to do is have a delegate like "Serializer" below that I can invoke on an instance of T, such as "Entry.Value" below.Please see the "return Entry..." line below for my wishful thinking.[code]
View 2 Replies