I have a function which return the Dataset and my question is that, is dataset memory release automatic when function work finished if not please suggest me how i release memory in below sample question?
public function givemedataset()
dim keepme as new dataset
'grabbing record into dataset
return keepme
end function
Private Sub forumbrowsebtn_Click
dim getme as dataset=givemedataset
end sub
An application that has 3 Webbrowsers instantiated at design time navigates to webbrowser2 15 times every minute with a different webpage. Webbrowser2 is disposed of after each web page is received and processed. The size of the private application memory continues to grow as when the disposal was not instigated. The application memory grows to 1GB and then the program stops responding. Any suggestions? [Code]
View 1 RepliesAssume I have a large dataset and I want to run a "like" function in the dataset eg column - Name..Is there any way to run a like statement in a dataset.Is it possible with ASP.NET? I dont want to run a query to the database.
View 3 RepliesAssume I have a large dataset and I want to run a "like" function in the dataset eg column - NameIs there any way to run a like statement in a dataset.
View 5 RepliesHow 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.
in main form, when a button is clicked, it opens a new form which has a webbrowser. users can use it to browser some sites. if the user closed this form, it goes back to the main form. and they can click button to open the browser form again.
I noticed that one thing. if the browser form is opened, it uses much memory (which is normal because of the site it browses). however, after the browser form is closed, the memory is not released.
In the browser form, when it is closing, the webbrowser is disposed and dereferenced. and no other part uses much memory in the form. GC is called too. what else should I do to release all memory the browser form uses?
now, it is like once the browser form is opened once, the memory usage never goes down even the form is closed.
I have a main window in my project, and numerous other child widows inside the main.I have noticed that. When I open the main window occupies 1500K of memory, when open one child window then adds in occupied memory 6000K.When I open the second window doing the same. When I close the two child windows the occupied memory is not released.So What I want is to release the occupied memory when ever I close child windows.How I can do that? with some code example in vb.net if it is possible.This problem often sawing in the computers on the Local NET not in my computer (developer computer which has the SQL server on it).
View 7 RepliesWhen a sub runs, it is using up large chunks of memory on every pass. It is loading pics into a listview. The pics are 1 to 2mb each and it is consuming 30-60mb for each one. How to release the memory once I close the form. Is there anything I can do to reduce it?
Private Sub PhotoFrm_Load(sender As System.Object, e As System.EventArgs) Handles MyBase.Load
For Each ImageStr As String In Images
Dim Extension As String = IO.Path.GetExtension(ImageStr)
Dim fs As New IO.FileStream(ImageStr, IO.FileMode.Open)
Dim br As New IO.BinaryReader(fs)
[Code] .....
how can i release a form from memory i am using public variables in my form , & the same variables are appearing on the form controls , like text box and datagridview values
i want to use
MyForm = nothing OR MyForm.dispose
so that the form will take rebirth on next open
Is it necessary to clear a List of String to release memory?Or is it done automatically?
View 1 RepliesRead (search a value) in a non specific process memory. Write a value in the address found in the last function requested.
View 2 RepliesI am using Rational Functional Tester(RFT) tool with Visual Studio 2010. The scripts are written in Vb.net. The application gets slower frequently and sometimes the browser gets hang..I assume the problem is in memory leakage. We are cleaning the memory of objects by calling dispose in finally but still there is no improvement. How can we increase the performance at the best in terms of memory.
View 14 RepliesAutomatic update Dataset after change in Access
View 8 RepliesI'm trying to make sure that I don't leave any loose ends open in my application and am concerned about a few but might get my answer from this one. I've "overriden" some functions so that way I can try and keep all the resources as clean and free as possible. So in this instance, I have a function called ExecuteReader which returns a DbDataReader as normal, but all I had to pass to it was a SQL string rather than recreating a DbCommand every time. I want to make sure that even though I'm unable to call dbCommand.Dispose() that it is actually doing so.
[code...]
In here, I set the _dbReader to what I'd get from the function and eventually I close the _dbReader. I do not close the connection as I don't open it each time I make a query. This is a SQLite database that only one user will be using at a time (small application with very very very little likeliness it will grow) so I didn't think it necessary to close and open the connection all the time. Maybe I'm wrong, not sure. Using it this way though, it is potentially ok for cleaning resources?
I set a range with a function like this:
Code:
Public Function GetRange(ByVal strCellRange As String) As Microsoft.Office.Interop.Excel.Range
Try
[Code]....
I have a do until loop. But whenever my program get's to it, it always locks the application so I can't click on anything until the loop is finished. How do I fix this? I want to be able to stop the loop with a stop button.
View 11 Replies[code]When JIT debugging is enabled, any unhandled exception will be sent to the JIT debugger registered on the computer rather than be handled by this dialog box.
View 9 RepliesI need to loop through a gridview to find records that match items in a different table (in SQL). Is the best method to loop through the gridview and call an SQL procedure on every loop to find matching records? Or should I pull the entire sql db into a datatable and query the dataset in my gridview loop?
'find source ID based on make/model/serial No combination.
Dim cSource As New clsSource()
Dim ds As DataSet = cSource.GetSources()
[Code].....
I am working on a project, and have defined a strongly typed dataset. Normally I create a single instance of a dataset and use through out an application. In this case I have need to clone the dataset, and clear 2 of the table and then fill those 2 tables with fake data for creating a sample report. at the end of the retuine, I dispose of the dataset. So I was think all was good.
View 1 Repliesi want to automatic key press in game. i tried to do this with sendkeys method but it worked and when i click chatboxes. i want to press key in game with really functions
View 2 RepliesWhen the user releases the left mouse button (MouseUp) anywhere on the screen (whether it be outside of the form or not), I want a message to be shown. How do I do this?
View 5 RepliesI have a windows desktop app I'd like to release that would access data from a database on the web. Never done this before, so not sure what's needed either on the client side or the server side.
View 1 RepliesI'm trying to make it so my textbox is colour-coordinated automatically. By this, I mean that if a line begins with a certain bit of text (for example, a line starting with <text>) then it will make the whole line red.I realise that this may not be possible with a standard textbox, so I don't mind any suggestions that need an RTF item.
View 1 Repliesi am planning on uploading my program to a site and I would require a automatic update. How would i do this?
View 1 Repliesits been a while since i've posted on the board..Well i got a problem and i stuck and i thought its time to use your knowledge.I want to make a program that its base code will do an automatic login to some of my sites i use and download the page raw source code to work with the results.
View 2 RepliesI wanted to know if u define a dimension in a function or subroutine and that func/sub is called say 5 times, does the memory new block of memory get assigned to it every time the func/sub is run or does it use the one it got assigned the first time?
View 6 RepliesI don't use VB.Net very much, still mostly do VB6, but I am doing this project in .Net. I have a huge string of data, 168 Mb that I stream in from a file to a string variable. Then I have to perform a number of replacements on it before using the data to compile statistics. Because of the nature of the data, I can't break this up into smaller strings.
The problem is that I get a system out of memory error after a few replacements.
I've used both Replace(x,y,z) and X.Replace(y,z). The second one gets a little farther in the code before it crashes, but they both crash.
When I run it in the IDE, the IDE is using about 130 Mb of RAM, the Exe of the app is running about 350 Mb, and one svchost.exe runs about 300 Mb
Other than that there are no major RAM uses going on. The PC has an i7 980x cpu with 12 GB of RAM.
How do I make a release build in visual studio express 2010 (VB) ?
View 1 RepliesI've searched the VS settings and haven't discovered why the bin.Release folder is empty after a build. The bin.Debug folder output is normal. The same occurs with the obj.* folder.
View 4 RepliesHow I can do that in the moment that I will copy something this will paste this straight to the software?
View 6 Replies
