When i use this code my cursor goes to a point on my screen...Cursor.Position = Me.PointToScreen(New Point(285, 200))But when i use it a several times sometimes the position is slightly different...I can't figure it out why it is different after some time... Can i use the dispose function ?ps my form doesn't change in size and it doesn't move and always stays in the center of the screen.
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Loading another form increases the memory usage of the application and after closing is not combing back to normal? dispose function at formclosed event is not doing that
View 12 RepliesShould I call .Dispose() after returning an object that implements IDisposable? [code]In other words, is the object I return a copy, or is it the object itself?
View 11 RepliesI looked at the Dispose() method in System.Data.SqlClient.SqlTransaction (using a decompiler):
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Why does everyone say in forums that it is Rolling back in the dispose? Where does it rollback?
I am using the following code to populate data in Textbox1:
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I have few functions assigned in TextBox1_TextChanged event. The problem i am facing is this event is fired twice, once after the Fill command and another after the Position command whereas i want the event to fire only once after the Position command. What should i do?
Write a function to print the Fibonacci value at a given position in the series.you should write two versions of the function both of wich must be named Fibonacci(overload functions).the first version should be implemented using a for loop.the second version should be implemented using do until.
View 3 RepliesI wanna ask about Z position on joystick fung
Code:
Imports System.Runtime.InteropServices
Imports System.ComponentModel
Public Class Joystick
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this code is work for X and Y axis but i dont know how to use Z axis using this code,also how to called the button if it pressed or not?
Let's say I have a rectangle that has been defined like the following :
Dim rectA as Rectangle
rectA = New Rectangle(0, 0, 100, 600)
When I want to dispose it what do I do.
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In My application, I have an MDI form. From MDI form I open all forms as child forms. I have implemented IDisposable for all large objects like file stream DB connection etc. In the Form_Disposed event I dispose all unmanaged objects. After the child form is closed, all unmanaged objects are disposed but managed objects (controls and form) are not disposed and still in memory. I find it from .Net Memory Profiler ([URL]).
So I have write code to remove all event handlers of all controls and form. Now, When form closed, dispose is called and all event handlers and controls are disposed, but controls and form are still in memory.
In my Zeal to get with the "Dispose" program, I implement a dispose pattern (still learning the ways and means of THAT) wherever it seems to make sense.I THINK I have the basic idea. However, I notice that, while Drawing.Brushes HAVE a Dispose method, when I call it, some sort of instability is created in Visual Studio itself, and i get the dreaded "Visual Studio has encountered an error and needs to close" splash screen, with no useable error information. SHould I assume that one should just NOT call dispose on Brush objects, or is there something I am missing here: [code]
View 7 RepliesIn VB.NET when I am closing a form and no longer need to use it, do I do a me.Close() and me.Dispose()? Does the dispose erase the form from memory?
View 6 RepliesI want to understand a situation; it's related to datatable clear().I have a code that populate a typed datatable from Excel in a separate thread using a backgroundworker. This works well, the table is filled and I can see the data. Now, I want to clear the data from table and restart the import. The operation is ten times slower than the first time. My datatable variable is declared like this:Private dt as new DataTable - not a local variableI want that all subs from class to be able to use the table, that's the reason I declared the table as private. What I want is to be able to create a new instance of dt (or clear allocated memory) - maybe this is the reason for slowdown.
View 2 RepliesI am using VB.NET (Visual Studio 2008) and thus .Net framework 3.5. I have developed an application which has a MDI form and then has several other forms, most of which are shown using form.showdialog and some set of forms are shown using form.show. Whenenver a form (shown using form.showdialog) was closed (usually by clicking on a button (OK or Cancel)) I wrote code Me.dispose. After careful testing and R&D I figured this caused flickering on the screen. There use to be a flicker on the screen and it looked weird.
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I am having problems disposing of a image thats stored in a 'DataGridViewImageColumn' . When i try and delete the image the 1st one works then the 2nd time its used i get a 'System.IO.IOException: The process cannot access the file 'x' because it is being used by another process'. How do i solve this problem? i am disposing of the image before i try and delete it but yet its still not working:
PS - I have searched the forums / google for a suitable answer and cant find one
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How do I undispose a webbrowser after I dispose it?
View 1 RepliesI was wondering if you should dispose undisposed resources before closing your application. Maybe it's not necessary to do this because closing your application automatically takes care of this.
View 2 RepliesI have prided myself in having a pretty clean code however in the game I am making I have a player view (showscreen) and a host view, which is a copy of the player view (on a smaller screen). This way the host can see what's going on.The problem is that the graphic doesn't dispose properly and Garbage Collector gets it, though I have noticed it will crash if GC doesn't get it in time. The larger the showscreen window the more junk gets put into memory, which sucks.I thought I had everything correctly disposed below but still doesn't get the job done.
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I have looking for a tutorial or class that demonstrates more than a trivial example of saving a windows position on closing. The ones I have found don't seem to work on all systems because of:
1. Multiple monitors. (and resolution between those monitors)
2. Toolbar size and position (toolbar is only on the primary monitor, well sometimes)
3. Sometimes the programs dont open on the right monitor they were closed on.
Is there an extensive class or tutorial on all the stuff a programmer needs to get right to have a window size and position persisted between executions?
I have a user control that inherits the FW ListView and I need to dispose of two objects when the form's disposing of it's objects. Here's what I've concluded already, am I on the right track?
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Hi. what is the difference of sleep function and pause function (using timer) between a loop.
View 12 RepliesWhat will happen when 3 function calls same function at a time? I have 3 Function, f1,f2,f3.. Those function after completing their task will call finish() function. What will happen if Finish is Called morethan once..
View 9 RepliesThe below code is giving error "There is no row at position -1" when I click the mark completed button. The database field is being updated with the current date and time before it errors.[code]
View 2 Repliesi've been creating a program in VB that connects to a Microsoft database, and up until now, the program has been displaying the information fine. however, all i get now is the error message "No row at position 0" whenever it tries to display almost anything.
I am baffled as i have 3 forms that work and are programmed exactly the same way and only 1 works fine :/
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I seem to have a problem with the following the follow code is in a click event of a new button:
sqlBindingSource.AddNew()
the follow code is in a click event of a delete button:
Try
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[code] Why doesn't the Patching Code work? (It doesn't move "fs" to the right position) [code] The code is suppose to use a FileStream to write bytes to another file. The part where it's suppose to write bytes works fine, but the part where it moves the FileStreams position isn't.
View 6 RepliesWhat i need is when i click a button it will msgbox the position of the vscrollbar.
View 4 Repliesim using this code to get window's Postions
Imports System.Runtime.InteropServices
Public Class Form1
<StructLayout(LayoutKind.Sequential)> _
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it works perfect on anything i have tried but now im trying to get a system window more specific the properties window i tried Winspect to get the window ID i tried everything listed in it and nothing worked anyone got some idea's why ? or any other way i can get the window postion
in my form, I have a DataGridView and TreeView apart from other controls. Now, the data shown in the DataGridView is also displayed in the TreeView. What I need doing is that when a node in the TreeView is selected, the corresponding row in the DataGridView needs getting selected for further action.I used some logic to determine the DataGridView row. But, I am unable to select the row. When I use the DataGridView.Row(index).Selected function, the row is selected, however, the row index does not change.
View 2 RepliesWas wondering how i can go about getting the current video dimensions (height and width) and also how can i set the media position?
View 3 RepliesLets say I have a label with the text "_ _ _ _ _ ", some underscores. Now what if I want the program to locate the 3rd underscore and replace with something else. Is this possible? I was guessing by getting the character's position first and somehow there is a function that replaces characters by their position.
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