Call A Function In Asp.net With Program When Browser Is Closed?
Mar 16, 2011I want to call a function in asp.net with vb.net when browser is closed. But I want only browser close, not tag close and other.
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VS 2010 : Convert A DLL Function Call Which Has The Callback Function Routine Called Within The DLL Function Call?
May 25, 2012I am trying to convert a DLL function call which has the Callback function routine called within the DLL function call.The DLL function call signature is like this:
typedef void *HANDLE;
typedef HANDLE HACQDESC;
DECLARE_HANDLE (HWND);
[code]....
how to convert this DLL call to VB.NET and also how to create the callback function and send it as parameter to this function
call.
Call An IronPython Function From Program?
Aug 18, 2011I am struggling with this program which uses emgucv(an opencv wrapper for .net) for about 2 weeks. The problem is unfortunately not programming, but setting up emgucv in such a way that it works. I didn't manage to do so for vb.net so I tried doing it for ironpython(because I know python too). Emgucv seems to work perfectly when using ironpython, so I created a function that takes an image as an argument and analyses it in the way I want, returning another image with the results in it. The problem is I want to call this function, giving it the image argument(it could be a string containing the path) from within VB.net and become another string containing the result image as return. I later plan to package that project in a setup so I can redistribute it.
View 1 RepliesWeb Browser Cannot Be Closed
May 23, 2011I am trying to create a locked down browser for the employees at my work to use at a kiosk. I need to prevent the user from getting out of the app. I have figured out how to prevent them from closing it by pressing alt-f4 or ctrl-f4 but I would like to also prevent alt-esc, ctrl-esc, alt-tab, and the windows key. I am new to windows application development but have experience in web vb.net. I am using VB.NET 2010 express.
View 1 RepliesBrowser Crashes When All Tabs Are Closed?
Jun 20, 2012At the moment I am making a web browser, and I have a problem in which if all of the tabs are closed, the web browser crashes.
View 4 RepliesViewstate Never Expires Until The Browser Is Closed?
Sep 21, 2009I have been reading up and trying to understand the difference viewstate and session and as i am only storing a database id i believe i have settled on Viewstate.
Am i right in saying that a viewstate never expires until the browser is closed? One of the issues i have with Sessions is that sometimes the people completling my websites forms can take and age to do so and the session can expire.
Invalid Attempt To Call Read When Reader Is Closed
Dec 23, 2011I am gettting the following 2 errors:
Invalid attempt to call Read when reader is closed and sometimes Invalid attempt to call MetaData when reader is closed when attempting to read from a sqldatareader object. What I want is to list groups in listview. The last column is "Total Numbers".[code]...
It works ok for the first row but after that the first error generates. I don't want to include the COUNT function in the main sql cos then i would be required to group the rest fields (there are 9 of them totally). I tried MARS but it don't work at all in my connection which is like
Invalid Attempt To Call Read When Reader Is Closed?
Mar 31, 2011"Invalid attempt to call Read when reader is closed." is returned when trying to use a SqlDataReader in a Thread or BackgroundWorker (Do While z.rdr.Read() in the bold sections - I know this code does the same thing twice....). I have looked at a few forum posts but I did not find a method to keep the SqlDataReader open when passing the arguments. How do I thread the SqlDataReader loop?
[Code]...
Function Syntax - Call A Function With 2 Arguments When The Function Is Only Defined For One
Apr 1, 2010I'm trying to undersatnd the syntax of calling a funciton and it seem confusing when I'm using a web service in ASP.net. Maybe this question should be in an ASP forum, but it is a VB question. This simple web service allows you to type in your name and it response with an alert box with you name.
My question is, How can you call a function with 2 arguments when the function is only defined for one. I understand that the second argument is actually a method that handling the respons, but how can you interchange function arguments for methods and how do you know that there are methods for
Here's my call:
<script type="text/javascript">
function HelloWorld()
{
var yourName = $get('txtYourName').value;
[CODE]...
Call A Dynamic Compiled Func(of ) Function Via Expression.Call?
Mar 22, 2012I want to create an ExpressionTree where a Func(of Vector, Vector, Vector, Vector, Double, Double, Vektor) should be called. So I use
Expression.Call(Forces(0).Function.Method, {Vec1, Vec2, Vec3, Vec4, Double1, Double2})(Vec1-4, Double1-2 are declared as ParameterExpression and Forces(0).Function as Func(of Vector, Vector, Vector, Vector, Double, Double, Vector). But I get an AgrumentException, because Forces(0).Function.Method has seven Arguments. (System.Runtime.CompilerServices.Closure as seventh argument at Index 0).
VS 2010 Program Will Need To Store Some Settings For When The Program Gets Closed Then Opened Again?
Jan 28, 2009My program will need to store some settings for when the program gets closed then opened again. I would then like to reload the settings?
- Flat file
- Database
- Registry
- Other
Program First Open And Saving Data When Program Is Closed?
Nov 19, 2011I am currently working on a menu driven console program that so far has 4 menu options of checking internet connection, decrypting/encrypting a message, calculator, and a logout, and i am wondering about a few current things.
1. How do i make it to where, when a program starts for the first time, it asks for a user to enter in his data, like signing up for a site for the first time?
2. How do i make it to where the program will save the data entered, and does not delete when the user closed the program.
3. How can i make it to where when a user signs in, his/her data is read correctly? Like an array search for a multidimensional array.For my "New user" sign data i created a function...
Function createNewUser() As String()
Dim name As String
Dim userName As String[code]...
Call A Function From Inside Another And Suspend It Until The Called Function Is Finished
Jan 25, 2010How can I call a function from inside another function and suspend the calling function until the called function is finished? I hope I can get some replies because I don't know how to ask the question and make sense:).
Anyway what I am trying to do in steps:
1. The user clicks button1 which triggers the click event.
2. From the click event I call a function
3. I then pop-up a form, that has instructions for the user to read.
4. After the user has read the form he will click the "Done" button and return to the calling function.
The problem is the the calling function continues to execute. I want to stop execution of the calling function until the users clicks the "Done" button on the instruction pop=up. I know I can use a msgbox but the instructions can be lengthly and does not look good in a msgbox.
I have tried the Call method with return in the "Done" button click but I can make that work. I also tried a goto statement but I can get that to work either. In the call statement I said call frmInstruction.show() and it got there but as I said the calling function continued to execute.
Getimage Of Control Function - Call This Function For Saving The Images?
Jan 30, 2010ive two custom controls, which are used to draw and edit etc...(like paint but customized....) i want to save their images with a single click....So im using the Getimageofcontrol function to do it....its code is below:::
Public Function GetImageOfControl(ByVal c As Control) As Image
Dim rc As New Rectangle(c.PointToScreen(c.Location), c.Size)
Dim i As Image = New Bitmap(rc.Width, rc.Height)[code].....
and the code to call this function for saving the images is simply.. ...
GetImageOfControl(pboxd).Save("c:78.jpg")
GetImageOfControl2(pboxf).Save("c:lp.jpg")
but the problem is that both the images have the same content....
Threaded Function Call Slower Than Calling Function Directly?
Sep 14, 2010I have a function where I am performing a lot number of database operations inside a Sub. The operation when called directly like:ExecProcess()
takes about 11 seconds to run.However, if I create a Delegate, and call the sub using BeginInvoke(), the very same process takes over 40 seconds to execute.Here's the threaded code:
Protected del As ProcessDelegate
Protected Delegate Sub ProcessDelegate()
del = New ProcessDelegate(AddressOf SELocal.ExecJob)
Dim cb As New AsyncCallback(AddressOf Me.ExecJobComplete)
del.BeginInvoke(cb, del)
Anyone know what may cause a function to take longer inside a new thread, rather than calling directly?
Call A Function / String That It Uses Will Be Given To Function To Initiate A Download?
Aug 21, 2009Some programs implement command parameters, Like my favourite computer game - Crysis - has them and windows media player has them.But how could i implement them in VB.NET..I want to have a component of my program built as a seperate exe - so it can be an Optional component.But of course the seperate exe, on load, needs data passing to it.So i need something like Process.start("Componentname.exe", "/StartDL <Suchandsuchastring>)/StartDL will need to call a function, and the string that it uses will be given to the function to initiate a download?
View 9 RepliesOverride A Function And Call A Function With The Same Name From The Grandparent Superclass?
Sep 6, 2010I am attempting to inherit an ASP.NET RegularExpressionValidator and add some functionality to it. I inherited the control and added my custom properties. However, I would also like the client-side functionality to call a different JavaScript function.
In order to do that, I will need to supress what is happening in the AddAttributesToRender method because the name of the function is hard-coded there. Here is what comes up in Reflector for the AddAttributesToRender function in RegularExpressionValidator:
[Code]...
Note: I tried to add the expando property before the parent class does to see if the code would check for its existence and skip it, but that just causes an exception.
Invalid Attempt To Call Read When Reader Is Closed (While OleDbDataReader.Read)
Sep 1, 2009There are already multiple threads about this, but i don't have the knowledge about the different SQL databases/methods to make heads or tales from it.I am using an OleDbDataCommand, an OleDbDataReader and the following code
Dim Query2 As OleDb.OleDbCommand
Dim RetVal2 As OleDb.OleDbDataReader
Query2 = New OleDb.OleDbCommand("Select [section], [title], [id] From " & DtSections & " Where [volume] = " & volu & " And [chapter] = " & chapter & "", AccessConn)
[code]....
value)In order to evaluate an indexed property, the property must be qualified and the arguments must be explicitly supplied by the user. Type) Object?
Call A Tsql Function Inside A Function?
Mar 23, 2011I arrive from years with Oracle plsql. Now I'm trying vb.net I created a function that return a char value, so written:
[Code]...
The question: I will create a function get_type(...) in vb.net that calls the tsql function written above... how can I call the tsql function [abc].[GET_PERSON_TYPE] in vb.net function get_type(...) function?
Query Return Value - Getting An Error In Runtime That Is "Invalid Attempt To Call Read When Reader Is Closed" ?
Aug 31, 2009I have an error that is during the query to a database ExecuteReader 'phase' of my program, i am assigning an .OleDbDataReader to a variable RetVal and then, i am giving this RetVal = Query.ExecuteReader, and then in the while the query is being read loop(While RetVal.Read) i am getting an error in runtime that is "Invalid attempt to call Read when reader is closed." I know this means i have to open the reader, but i don't know how to do this, as i have been using this process for a few weeks and haven't had this error pop up. (and i have managed to use the while loop)If you're not living on the edge, you're taking up too much room
View 7 RepliesTest If A Program Is Closed?
Dec 27, 2011in my Application Prime95 is opened for 60 seconds. i want to know how to make the test end if the user closes prime95.
* how to detect if prime95 is not running in short *
Remaking Com Object After Program Closed
Dec 2, 2010What makes it even harder is that I can't replicate this problem on my computer very consistently. Sometimes I will get the error but most of the time I won't. Basically what is happening is I am creating an IE object which my program then controls for a long period of time. What is happening is, if a user exits the program it calls oIE.Quit() then closes the program. This should close internet explorer and all processes associated with it.
But, the iexplorer process doesn't end up closing. Then when the user tries to run the program again we get this error "System.Runtime.InteropServices.COMException (0x80004005): Creating an instance of the COM component with CLSID {0002DF01-0000-0000-C000-000000000046} from the IClassFactory failed due to the following error: 80004005.".
To fix this we simply close the any iexplorer.exe processes that are open and it will let us create our i.e. object again. This happens also if the program crashes and they try to restart it. I am not sure what is causing this or if I am missing something that has to do with com objects. Here is some code although plugging in this code likely won't reproduce any errors:
'create ie object
oIE = New SHDocVw.InternetExplorer
oIE.Navigate("[URL]")
oIE.Visible = False
oIE.Silent = True
'kill ie object
oIE.Quit()
Saving The Value Of A Variable When Program Is Closed?
Feb 8, 2012I am looking for an easy way to save the value of a variable when a program is closed. And then when it is reopened the variable has the same value as what it was previously when the program was closed. The variable has an integer value.
View 2 RepliesVS 2010 Detecting If A Program Has Closed?
Aug 5, 2011I have a program which when a button is clicked on a form sends the form to the back, so that Notepad can open on top, then it opens up notepad
Me.SendToBack()
System.Diagnostics.Process.Start("notepad.exe", myPath & "*********.txt")
Now what I want to do is to detect when the notepad has been closed then I can bring the form back to the front and I just do not know which commands to use for this to detect a program outside of VS 2010.
Checking If A Program Is Closed And Shut Down Computer?
Jul 23, 2009I'm making a simple app that checks if Windows Media Center is open, if it is open and the program receives the close command from windows, make my application shut down the computer. I was wondering if this was the most efficient way of doing this:
[Code]...
VS 2010 Store Some Settings For When Program Gets Closed Then Opened Again
Jan 2, 2012My program will need to store some settings for when the program gets closed then opened again. I would then like to reload the settings, and I was wondering what is the best way to do this with VB?
- Flat file
- Database
- Registry
- Other
Cannot Call SetSite Method Of Browser Helper Object
Mar 2, 2009I am using following code for browser helper object. But when I try to run this BHO in internet explorer SetSite method is not called.
using System;
using System.Collections.Generic;
using System.Text;
using SHDocVw;
using mshtml;
using System.IO;
using Microsoft.Win32;
[Code] .....
WinForm Communicating - Win Form App Could Call Javascript In The Web Browser?
Jul 13, 2009We have a web app in a web browser running on an intranet so security is less of an issue. We have a separate win form app. Is there any way the Win Form app could call javascript in the web browser. The browser can't be embedded in the WinForm.
View 12 Replies.net - DataReader Not Closed When Connection Is Closed, Consequences?
May 31, 2011for example i have this code :
Sub Month()
Dim Conn As New Data.OracleClient.OracleConnection
Conn.Open()
Try
Dim Cmd As New Data.OracleClient.OracleCommand
With Cmd
[Code]...
What will happen to the datareader when the Connection is closed ( Conn.close)
Will the Cursor that is used by the datareader be freed ? or will it stay open ?
If the cursor that is used by the datareader is still open , when will it be automatically closed ? or should i just closed it manually ?
Will it cause the dreaded "ORA-01000: maximum open cursors exceeded" ?
VS 2008 - Closing The Program By Clicking On The X Button, The NotifyIcon Did Not Closed?
Mar 18, 2009why when I am Closing the program by clicking on the X button, the NotifyIcon did not closed? it just stay there until I move my mouse over it....
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