PictureBox.Load and animated GIFs

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  - 1
    - ClickOnce xamlparse error Hi I was trying to use ClickOnce in VS2008 beta2 for my WPF application but got error after I ran the setup.exe. Error signature: ... P9: system.windows.markup.xamlparse Any thoughts? -- Leon Tag: PictureBox.Load and animated GIFs Tag: 113738
  - 2
    - Autocomplete textbox with dynamic datasource I know how to use autocomplete with 2.0 framework on a textbox. I also know how to use COM interop to use the IAutoComplete interface directly. But with either approach I seem unable to change the list while the user is typing. I have an XML document and i want the user to be able to navigate to nodes by typing in an XPath. i.e. when the user types /A it pops up with /Animals /Applications and when they type /Animals/ it pops up with: /Animals/Dog /Animals/Cat I do NOT want to prepopulate the whole list. However when using the .NET framework and changing the list I get an 'Access Violation' exception which is unacceptable. I tried to use the AutoComplete COM control (IAutoComplete) based upon this blog entry : http://jiangsheng.spaces.live.com/blog/cns!1BE894DEAF296E0A!732.entry Unfortunately the control doesn't 'ask' for an updated list of items as I type. I've tried all kinds of nasty tricks, like faking an 'Escape' key press but none are acceptable because of unwanted sideeffects. I essentially want the same behavior you get with the windows filename autocompletion, but I dont see how I can achieve this. I might just have to make my own autocomplete dropdown,but woudl rather not have to do that. Any suggestions? -andy Tag: PictureBox.Load and animated GIFs Tag: 113730
  - 3
    - WebBrowser (loop automation) Hello, Background information â?¦. I have a VS2005 C# Windows forms app which has several text fields, one button control and one webbrowser control that I use to display an external webpage and based on the input data provided by the user, I perform some tasks on the webpage. The idea is to go automatically go through several web pages based in data captured by the user until I reach to a desired webpage. All this works fine, The user fills the data on the windows form, then clicks on the form's button and the process starts. The click method of this button does something like like â?¦ private void btnSendData_Click(object sender, EventArgs e) { Uri myUri = new Uri (http://www.externalwebsite/page1.htm); this.myWebBrowser.Url = myUri; this.stageSecuence = 1; } I use a variable named "stageSecuence" in the next method to perform some automated tasks depending on the webpage that is being processed. Then for the webbrowser control I have the following method: private void myWebBrowser_DocumentCompleted(object sender, WebBrowserDocumentCompletedEventArgs e) { switch (this.stageSecuence) { case 1: // perform some tasks like invoking the submit on the web page this.stageSecuence++; case 2: // perform some other tasks this.stageSecuence++; // and so on } Current situation, Now, instead of executing this automation on the webpage based on the data manually typed by the user; I want to call this process several times based on some database information. I wrote the following code to perfom a loop (hoping to call sereval times the automation process) for (int i = 0; i < this.numberOfTableRecords; i++) { // get record info Uri myUri = new Uri (http://www.externalwebsite/page1.htm); this.myWebBrowser.Url = myUri; this.stageSecuence = 1; } By doing this I only get the myWebBrowser_DocumentCompleted method executed only once for the last record of the loop; in fact this method is executed once the loop has finished. How can I get the DocumentCompleted method executed once for every record in the loop ? Can I call this method manually such as: this.myWebBrowser_DocumentCompleted( â?¦ ) ?? Thanks in advance, Cesar Tag: PictureBox.Load and animated GIFs Tag: 113727
  - 4
    - Word 2007 symbols problem I recently got word 2007 on my windows vista computor and no matter what I do when i push the slash/question mark it puts a french e in it's place. Tag: PictureBox.Load and animated GIFs Tag: 113726
  - 5
    - Layout MDI problems with more than 3 windows Hello, When i use LayoutMdi with TileHorizontal or TileVertical and more than 3 windows the result is not the expected one and is the same. When i TileVertical 4 windows i want them === =1= === =2= === =3= === =4= === (like ALL windows application does) but i got them : ====== =1==2= ====== =3==4= ====== If TileHorizontal : the result is the same. Example VB Code : You open a new windows application and paste this in Form1.vb Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load If Me.MdiParent Is Nothing Then Me.IsMdiContainer = True For i As Integer = 1 To 4 Dim f As Form1 = New Form1 f.MdiParent = Me f.Show() Next i Me.LayoutMdi(MdiLayout.TileVertical) End If End Sub Thanks, Olivier Tag: PictureBox.Load and animated GIFs Tag: 113722
  - 6
    - Non-English Warnings When I use OpenFileDialog.ShowDialog(), the dialog is in Dutch (which is fine for the moment). It says 'Bestandsnaam' for Filename, 'Bestandstypen' for File Types etc. But when I select a non-existing file, the warning is in English. How can I change the warnings to Dutch (or to any other language)? Tag: PictureBox.Load and animated GIFs Tag: 113720
  - 7
    - Inconsistent image behavior in a Winforms app. I'm writing a Winforms app in Dot Net 2.0. I created a few PNG images for use as button images in order to liven up appearances a bit. I thought I had given the images a transparent background using Paint.Net and they display correctly on my own computer (a lenovo T60p laptop). However when the app is run on another computer (A Dell desktop with a flat monitor, if I remember correctly) the images have a white background. (The actual button background color is the system default grey. I have not changed that.) Am I forgetting some setting? Tag: PictureBox.Load and animated GIFs Tag: 113719
  - 8
    - Delete key in DataGridViewComboBoxCell I have a DataGridViewComboBoxCell in a DataGridView. When it is selected and the user presses Delete key it is reseted to default value (or first value in ComboBox). How can I override this default behavior and delete entire row instead? Thanks, Peter Tag: PictureBox.Load and animated GIFs Tag: 113716
  - 9
    - Capturing Shift+Return when AcceptButton is used Hi, I've got a search form with the search button used as AcceptButton for the form and everything works as expected. However, I want to be able to capture not only Return, but also Shift+Return in which case I want to change some settings and then perform the search as normal. As I understand it, when an AcceptButton is used the form's KeyDown event handler doesn't receive the Return key event even with KeyPreview on. If I remove the AcceptButton the Return key event gets through as expected. Is there a good way to find out whether Shift is currently pressed form within the accept button's Click event handler? Is there a way to display the search button with "AcceptButton style" without it actually being accept button? Any thoughts would be appreciated! Regards Henrik Jernevad Tag: PictureBox.Load and animated GIFs Tag: 113714
  - 10
    - .net controls advice Hi I am contemplating purchasing either Infragistics or DV Express .net controls. I need advise on which one is better if any. I need the usual controls that both offer i.e. grid, tab, explorer bars etc. Many Thanks Regards Tag: PictureBox.Load and animated GIFs Tag: 113711
  - 11
    - Disable Close button and remove Close menu and then reactivate In Vs2005 i need to disable the Close button and remove Close Menu and then reactivate them. I have found how to disable Close button and remove close menu, but i haven't found how to reactivate them. Does someone knows how to reactivate them? This is how i disable close button and remove close menu: ---- <DllImport("user32.dll")> Private Shared Function GetSystemMenu(ByVal hWnd As IntPtr, ByVal wMsg As Boolean) As IntPtr End Function <DllImport("user32.dll")> Private Shared Function RemoveMenu(ByVal hWnd As IntPtr, ByVal uPosition As Int32, ByVal uFlags As Int32) As Boolean End Function <DllImport("user32.dll")> Private Shared Function SendMessage(ByVal hWnd As IntPtr, ByVal wMsg As Int32, ByVal wParam As Int32, ByVal lParam As Int32) As Int32 End Function Private Const SC_CLOSE As Int32 = &HF060 Private Const MF_BYCOMMAND As Int32 = 0 Private Const WM_NCACTIVATE As Int32 = &H86 Private Sub DeactivateCloseButtonAndMenu() Dim hMenu As IntPtr hMenu = GetSystemMenu(Me.Handle, False) RemoveMenu(hMenu, SC_CLOSE, MF_BYCOMMAND) SendMessage(Me.Handle, WM_NCACTIVATE, 0, 0) SendMessage(Me.Handle, WM_NCACTIVATE, 1, 0) End Sub ---- Thanks. Tag: PictureBox.Load and animated GIFs Tag: 113710
  - 12
    - Lost Main Id Emails after HP system restore Hi Last night did a full system restore using HP F11 function on boot up. Now i have lost all my Parteners old emailsand she was the main Account in OutLook Exspress 6. I can find my emails just not sign of hers at all any where. Please Help she is not best pleased. Im running XP home SP2. Thanks for Reading Tom Tag: PictureBox.Load and animated GIFs Tag: 113709
  - 13
    - clickonce applications on linux with mono project? Hi, I want to known if I can run clickonce applications on linux or Mac. Specially I want to run Report Builder. From what I see the .application is not loaded from the web site. so I manually copy the reportbuilder folder and try to run it, but nothing appears. so... any guide? do you know if its possible? thanks. Jerome. Tag: PictureBox.Load and animated GIFs Tag: 113708
  - 14
    - printing source code from vs 2005 solution is there a utility program, other than 'VS.Net Code Print', that can print source code from a visual studio 2005 solution? 'VS.Net Code Print' is buggy and crashes before completing the print of my solution. Thanks!!! Tag: PictureBox.Load and animated GIFs Tag: 113707
  - 15
    - Grid view readonly property I am having problem with the fallowing piece of code foreach (DataGridViewRow Rows in prePDDataGridView.Rows) { Rows.DefaultCellStyle = null; Rows.ReadOnly = true; DataGridViewDisableButtonCell buttonCellSave = (DataGridViewDisableButtonCell)Rows.Cells["Save"]; buttonCellSave.Enabled = false; } The above code will make all the rows in data grid view as readonly and the button cell to disable. The above code works properly when i made the form as non MDI child. But it does not work if i made the form as MDI Child. I dont know what is the reason. Any solution for this ? Tag: PictureBox.Load and animated GIFs Tag: 113703
  - 16
    - Threading question Let's say I have an event handler that spawns another thread In that original event handler, is there a way to check, and do something ONLY after the thread is complete? Tag: PictureBox.Load and animated GIFs Tag: 113696
  - 17
    - A treeView node with multiple columns? Hello, friends, I need to have multiple columns in a TreeView node. How can I do this? Thanks a lot. Tag: PictureBox.Load and animated GIFs Tag: 113695
  - 18
    - printing source code is there a utility program, other than 'VS.Net Code Print', that can print source code from a visual studio 2005 solution? 'VS.Net Code Print' is buggy and crashes before completing the print of my solution. Thanks!!! Tag: PictureBox.Load and animated GIFs Tag: 113690
  - 19
    - binding CheckBox.Enabled to ComboBox selection I have a combo which is bound to a List<MyCustomObject>. One of the properties of MyCustomObject is a boolean which I would like to bind to a checkbox so that depending on the selection on the combobox, the checkbox below it would get enabled/disabled accordingly. How can this be achieved through databinding? I don't want to implement this through any event handling - just pure databinding. My initial effort was this: checkbox.DataBindings.Add("Enabled", combobox, "SelectedItem.MyBooleanProperty"); However, the above code does not work. Thanks Tag: PictureBox.Load and animated GIFs Tag: 113688
  - 20
    - RTF Parsing super/subscript I'm looking for some sample code to implement super and subscript in an RTF control w/o using the baseline offset and font size division/multiplication. I want to actually use the \super and \sub tags from the RTF spec. Even some open source RTF editor would be fine. Java or C++ source would even be acceptable. Thanks Brian Tag: PictureBox.Load and animated GIFs Tag: 113685
  - 21
    - Where is the application setting file? Hello, friends, As you know, we use application settings to store and retrieve property settings (such as window form size/location) for our application for each user. But, I could not find the file that stores all these info after running our app. (I think it should be under C:\Documents and Settings, but just could not find). Any ideas? Thanks a lot. Tag: PictureBox.Load and animated GIFs Tag: 113672
  - 22
    - Class Finalize - how to kill a class Let's say I have a class - so to instanciate it, I put : dim cWhatever as New myClass My question is, do I need something to remove it from memory, once the form's closed? What are the recommended ways of doing this (in the class itself/in the form disposed event, or where/how)? Tag: PictureBox.Load and animated GIFs Tag: 113671
  - 23
    - Spurious internet activity in simple forms application My vs2005 windows forms program is trying to access the internet at runtime. There is no network access in my code. Could it be due to the framework or the infragistics controls? I know that at build time the framework's license compiler tries to use dns or other internet access. Could this be happening at runtime also? Tag: PictureBox.Load and animated GIFs Tag: 113667
  - 24
    - Question about DataGridView binding I have not used the DataGridView that much. I'm writing a Winforms app using a datagridview bound to a datatable. For reasons too involved to go into, the grid is not editable. When I need to edit a record, I double-click on a row and retrieve the keys as follows: key = <grid name>.CurrentRow.Cells("Column Name").Value.ToString Then do a find on the datatable and get the datarow. datarow = datatable.Find(key) Is this the simplest way to relate the datagridview and the datasource or is there something simpler? Tag: PictureBox.Load and animated GIFs Tag: 113665
  - 25
    - Array initialization in class Hi all, I have an array defined in a class. The type of the array is the class type. For example: class MyClass { private int a; private int b; private MyClass[] Array; public MyClass() { a = 5; b = 2; Array = new MyClass[3]; } public void SetArrayFields() { Array[0].a = 1; Array[0].b = 8; } } What happens is that whenever I enter SetArrayFields() and try to set values to the array there is an error "System.NullReferenceException" Please help me to solve this problem Many thanks Tag: PictureBox.Load and animated GIFs Tag: 113664
- Next
  - 1
    - Add question mark to title bar Hi guys, I'm working with a small Win App (.NET 2.0, C#) and I was wondering: Is there a way to add the typical question mark to the title bar of my app, and then link that question mark to an "About" box? (no help) I've been "googling" it but didn't find the solution... Thanks a lot. -- ____________________________ Carlos Sosa Albert Tag: PictureBox.Load and animated GIFs Tag: 113662
  - 2
    - create nice interface with WPF Hi people, i would like try the new capability of WPF included in VisualStudio 2008 to create Nice (3D effect & more) but i dont know where to begin ? di you have any link how teach the begining to use WPF in VisualStudio 2008 With VB language... Thx a lot BTW, all WPF applications are in XAML format ? (sorry i dont know if i have posted i the right section) Tag: PictureBox.Load and animated GIFs Tag: 113660
  - 3
    - Blue Screen Many of our users are getting the blue screen problem. The file psg.sys is being blamed for these crashes. No one has been able to find a psg.sys file on their system when a search is done. Anyone have any idea what is going on with these Win XP Pro systems? Thanks. mfeiner@csc.com Tag: PictureBox.Load and animated GIFs Tag: 113659
  - 4
    - crystal report with image Hi, I am trying to develop a crystal report (invoice) and i need to show picture of the item in detail section. I do not see how can i do that.... I have picture of the item ordered in the file (on the machine i show report). The name is ItemId.jpg where ItemId comes from database OrderDetail table. Thanks George. Tag: PictureBox.Load and animated GIFs Tag: 113656
  - 5
    - ERROR inrelease Hi, I've deployed a small application, by my opinion well tested, runs perfect on mu development (Vista) and test machine (XP) but when installed at the customers site, displayed an unhandeled exeption when loading the first form. PLease HELP!! thx System.InvalidOperationException: An error occurred creating the form. See Exception.InnerException for details. The error is: Input string was not in a correct format. ---> System.FormatException: Input string was not in a correct format. at System.Number.StringToNumber(String str, NumberStyles options, NumberBuffer& number, NumberFormatInfo info, Boolean parseDecimal) at System.Number.ParseDecimal(String value, NumberStyles options, NumberFormatInfo numfmt) at System.Decimal.Parse(String s, IFormatProvider provider) at System.Convert.ToDecimal(String value) at NumericBox.NumericBox.set_Text(String value) at SolutionAdmin.frmOnderdelen.InitializeComponent() at SolutionAdmin.frmOnderdelen..ctor() --- End of inner exception stack trace --- at SolutionAdmin.My.MyProject.MyForms.Create__Instance__[T](T Instance) at SolutionAdmin.frmMaster.ProductsToolStripMenuItem_Click(Object sender, EventArgs e) at System.Windows.Forms.ToolStripItem.RaiseEvent(Object key, EventArgs e) at System.Windows.Forms.ToolStripMenuItem.OnClick(EventArgs e) at System.Windows.Forms.ToolStripItem.HandleClick(EventArgs e) at System.Windows.Forms.ToolStripItem.HandleMouseUp(MouseEventArgs e) at System.Windows.Forms.ToolStripItem.FireEventInteractive(EventArgs e, ToolStripItemEventType met) at System.Windows.Forms.ToolStripItem.FireEvent(EventArgs e, ToolStripItemEventType met) at System.Windows.Forms.ToolStrip.OnMouseUp(MouseEventArgs mea) at System.Windows.Forms.ToolStripDropDown.OnMouseUp(MouseEventArgs mea) at System.Windows.Forms.Control.WmMouseUp(Message& m, MouseButtons button, Int32 clicks) at System.Windows.Forms.Control.WndProc(Message& m) at System.Windows.Forms.ScrollableControl.WndProc(Message& m) at System.Windows.Forms.ToolStrip.WndProc(Message& m) at System.Windows.Forms.ToolStripDropDown.WndProc(Message& m) at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m) at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m) at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam) -- Best regards Luc Tag: PictureBox.Load and animated GIFs Tag: 113654
  - 6
    - When is a form disposed? (unexpected ObjectDisposedException errors) I have a multithreaded app that creates a progress form on the main thread and interacts with it from a worker thread. The code is more or less like this: void MainThread() { MyForm form = new MyForm(); ThreadPool.QueueUserWorkItem(WorkerThread, form); form.ShowDialog(); } void WorkerThread(object state) { using (MyForm form = state) { // do some work... } } So, the form can be closed manually by clicking a button on it (which sets DialogResult), or automatically when the worker thread is done and the "using" block terminates. I have written a thread-safe Dispose method, since it's called from a thread other than the one that created the form, and it looks more or less like this: delegate void DisposeDelegate(); void Dispose() { if (InvokeRequired) Invoke(new DisposeDelegate(Dispose), new object[] {}); else base.Dispose(); } My understanding is that ShowDialog() doesn't dispose the form when it returns, and indeed, Dispose() is only called once - at the end of the "using" block. The problem is that occasionally, Invoke() will fail with an ObjectDisposedException, even though it's the first time Dispose() has been called! I tried tracing through the framework with ILDASM to find the source of that exception, but with no luck. How exactly does the form know whether it's been disposed already, and under what circumstances is that flag set? Jesse Tag: PictureBox.Load and animated GIFs Tag: 113652
  - 7
    - Help, App hanging after screen saver I have an VS 2005 C# app that hangs after the screen saver activates. The debugger shows the following stack when this happens. Does anyone know what the app is waiting for? STACK: [In a sleep, wait, or join] mscorlib.dll!System.Threading.WaitHandle.WaitOne(long timeout, bool exitContext) + 0x2e bytes mscorlib.dll!System.Threading.WaitHandle.WaitOne(int millisecondsTimeout, bool exitContext) + 0x23 bytes System.Windows.Forms.dll!System.Windows.Forms.Control.WaitForWaitHandle(System.Threading.WaitHandle waitHandle = {System.Threading.ManualResetEvent}) + 0xa1 bytes System.Windows.Forms.dll!System.Windows.Forms.Control.MarshaledInvoke(System.Windows.Forms.Control caller, System.Delegate method, object[] args, bool synchronous) + 0x36d bytes System.Windows.Forms.dll!System.Windows.Forms.Control.Invoke(System.Delegate method, object[] args) + 0x48 bytes System.Windows.Forms.dll!System.Windows.Forms.WindowsFormsSynchronizationContext.Send(System.Threading.SendOrPostCallback d, object state) + 0x61 bytes System.dll!Microsoft.Win32.SystemEvents.SystemEventInvokeInfo.Invoke(bool checkFinalization = true, object[] args = {Dimensions:[0x00000002]}) + 0x68 bytes System.dll!Microsoft.Win32.SystemEvents.RaiseEvent(bool checkFinalization = true, object key = {object}, object[] args = {Dimensions:[0x00000002]}) + 0x106 bytes System.dll!Microsoft.Win32.SystemEvents.OnUserPreferenceChanging(int msg, System.IntPtr wParam, System.IntPtr lParam) + 0x6f bytes System.dll!Microsoft.Win32.SystemEvents.WindowProc(System.IntPtr hWnd = 0x001e10a4, int msg = 0x0000201a, System.IntPtr wParam = 0x00000000, System.IntPtr lParam = 0x066462f0) + 0x288 bytes [Native to Managed Transition] [Managed to Native Transition] System.Windows.Forms.dll!System.Windows.Forms.Application.ComponentManager.System.Windows.Forms.UnsafeNativeMethods.IMsoComponentManager.FPushMessageLoop(int dwComponentID, int reason = 0xffffffff, int pvLoopData = 0x00000000) + 0x2ea bytes System.Windows.Forms.dll!System.Windows.Forms.Application.ThreadContext.RunMessageLoopInner(int reason = 0xffffffff, System.Windows.Forms.ApplicationContext context = {System.Windows.Forms.ApplicationContext}) + 0x17d bytes System.Windows.Forms.dll! System.Windows.Forms.Application.ThreadContext.RunMessageLoop(int reason, System.Windows.Forms.ApplicationContext context) + 0x53 bytes System.Windows.Forms.dll!System.Windows.Forms.Application.Run(System.Windows.Forms.Form mainForm) + 0x2e bytes OmniProWms.exe!OmniPro.Wms.OmniProWms.Main(string[] args = {Dimensions:[0x00000000]}) Line 680 + 0x1a bytes C# Tag: PictureBox.Load and animated GIFs Tag: 113651
  - 8
    - Draw over multiple controls When a user grabs the border of an object to expand the size or move it I would like to draw a rectangle to show the growing size or changing position. The problem is that the MouseDown eevnt is within the active control, while the line I need to be drawing is outside the control. To make things worse the line to be drawn may need to "float" over other controls on the page. If I draw on the canvas of the form the line is behind the visual controls on top. Question: How do I draw OVER the top of multiple controls? Tag: PictureBox.Load and animated GIFs Tag: 113650
  - 9
    - Why is my .exe so large? This is a question. I have developed many vb.net Windows apps. Most apps .exe are under 100kb. The app I am presently writing is now 2400kb. What makes the exe get so large? I am vs2003 and .net framework 1.1. jwc *** Sent via Developersdex http://www.developersdex.com *** Tag: PictureBox.Load and animated GIFs Tag: 113644
  - 10
    - Why is my .exe so large? This is a question. I have developed many vb.net Windows apps. Most apps .exe are under 100kb. The app I am presently writing is now 2400kb. What makes the exe get so large? I am vs2003 and .net framework 1.1. jwc *** Sent via Developersdex http://www.developersdex.com *** Tag: PictureBox.Load and animated GIFs Tag: 113643
  - 11
    - Different DPI settings on monitor may make form layout displaced. Hello, friends, As you know, different DPI settings of monitors may make form layout displaced. In our app (developed at DPI 96 using c#.net 2005), some buttons are displayed only half at the bottom of a form when this app is running at DPI = 120 machine. Is there a way to make those layout DPI independant? Thanks a lot! Tag: PictureBox.Load and animated GIFs Tag: 113642
  - 12
    - NativeWindow.OnShutdown is causing a StackOverflowException Hello, I have a .NET class that creates a form and displays it using ShowDialog. This .NET class has a COM visible interface that is called by the main app which is C++ COM. The form displays correctly and everything seems to be fine, but when the main app is closed I always get a StackOverflowException from NativeWindow.OnShutdown. By the time the app is closed I would think that everything regarding the .NET form has been cleaned up as the form has been closed and all related objects are out of scope. Any ideas? Tag: PictureBox.Load and animated GIFs Tag: 113639
  - 13
    - Listbox captures focus This is very strange... I have a simple UserControl based on a System.Windows.Form. I have a databound listbox on the form, along with two radio buttons which aren't bound to anything. If I launch the form, everything is clickable. If I launch the form and navigate to any record in the listbox, I can no longer click any other control, except to close the form with the control box. None of the radio buttons are accessible. The visual feedback shows a click is occuring, but the click event doesn't fire, and despite autoCheck being enabled, the state doesn't toggle. This seems to be related to the databinding... but I can't imagine how. Anyone? Tag: PictureBox.Load and animated GIFs Tag: 113636
  - 14
    - Get FileType Using System.IO, is there any way, using FileInfo or any other way, to tell what filetype the file is? In other words, if I have a group of files, and I want to do something with only .doc file, can I do this using the System.IO class, or am I just stuck with checking the last three characters of the filename (with substring)? Tag: PictureBox.Load and animated GIFs Tag: 113635
  - 15
    - registry error hi, i'm trying to read out the registry keys in my win application.. but fir few keys..i'm encountering the below error "Request access to the registry isn't allowed". how can i solve it... what settings should i prefer? Tag: PictureBox.Load and animated GIFs Tag: 113628
  - 16
    - reading registry hi, i've a requirement to scan the registry keys programatically in a console application and read the data of the keys.. given a registry key, say,"HKEY_USERS". user should be able to scan the subkeys of the given key recursively(i.e. all the subkeys of the given subkeys etcc..) till the last indent level.... i've used a recursion to do so..but it's taking lot of time.. is there any efficient way to acheive it..... Tag: PictureBox.Load and animated GIFs Tag: 113627
  - 17
    - custom control focus Hello, I made a custom control which derives from UserControl, which handles mouse input (e.g., rotates an object) when the mouse moves. I am handling the OnMouseDown, OnMouseUp, OnMouseWheel, OnMouseMove functions. When I click on my control, it doesn't seem to get focus however, which is preventing me from getting mouse wheel input. If I use tab, I can get my control in focus and then it receives mouse wheel focus. How can I make my control have focus when the user clicks it? Tag: PictureBox.Load and animated GIFs Tag: 113623
  - 18
    - restore from maximize When I maximize a form, it sends a resize event, which I handle. However, when I click the restore box on the form's frame, it restores the window dimensions (physically) but my resize code is not executed. I can tell it is not being called because my resize code calculates the center to display some output. What am I doing wrong? It only fails to work when I "restore down" from maximize. Tag: PictureBox.Load and animated GIFs Tag: 113620
  - 19
    - control naming conventions, When I drag a control onto a form, visual studio gives it a dummy name. I'm wondering, what are good naming conventions you use for controls? I like to indicate the control type: for example, "submitButton" or "showResultCheckBox". Although I find this cumbersome sometimes. Also, I notice that in C#/.NET code, the m_ prefix for member variables is no longer popular, as it was in MFC. Do people use any notation to denote member variables in C#/.NET? I don't like to confuse them with local variables. Maybe it is popular to explicitly reference "this"? Tag: PictureBox.Load and animated GIFs Tag: 113618
  - 20
    - control naming conventions When I drag a control onto a form, visual studio gives it a dummy name. I'm wondering, what are good naming conventions you use for controls? I like to indicate the control type: for example, "submitButton" or "showResultCheckBox". Although I find this cumbersome sometimes. Also, I notice that in C#/.NET code, the m_ prefix for member variables is no longer popular, as it was in MFC. Do people use any notation to denote member variables in C#/.NET? I don't like to confuse them with local variables. Maybe it is popular to explicitly reference "this"? Tag: PictureBox.Load and animated GIFs Tag: 113617
  - 21
    - Deployment Problem I'm deploying a C# desktop application using a .Net deployment project. The application installs fine on my development PC, but it gives the following error when I attempt to install it on laptop that doesn't have the development tools: "The advertised application will not be installed because it might be unsafe. Contact your administrator to change the installation user interface option of the packae to basic." I've included the .Net Framework and the Cyrstal Reports msi as part of the deployment projectAny suggestions would be appreciated. Thanks Brad Tag: PictureBox.Load and animated GIFs Tag: 113616
  - 22
    - flicker in control I have made a custom control which displays a 3D object. The user can use the mouse to animate the object. However, I am getting bad flicker from the control. I call Invalidate in the mouse move handler to animate the object. I think the problem is the control repaints itself and then I draw over that myself, so it gets painted twice causing the flicker. In Win32 I would use a null brush or handle the WM_ERASEBKGND message to prevent this. Is there a flag I can set in the control to let it know I will do all the drawing? Tag: PictureBox.Load and animated GIFs Tag: 113615
  - 23
    - disabling SplitButton I'm needing to disable the button portion of the SplitButton while keeping the ability to display the DropDownItems and allow full functionality to them. Is this possible? using SplitButton.Enabled = False seems to disable the entire control. Thanks Rayne Tag: PictureBox.Load and animated GIFs Tag: 113612
  - 24
    - Hide main form initially Hi there, Is there a way to start a Windows Forms application with the main window not visible? Then later on when an external event occurs, I want to display the form. Thanks. Tag: PictureBox.Load and animated GIFs Tag: 113609
  - 25
    - Problems using CellFormatting event in DataGridView I'm writing a Winforms program in VB/Dot Net 2.0. I have a datagridview with 3 unbound fields that are filled in by the CellFormatting event handler, based on lookups using values of 3 other fields in the datagrid. Actually nothing is specifically 'wrong' but I'm wondering if anyone could give me some suggestions to improve it. First of all, performance could be better although I suspect this is in part due to a rather slow network. Any alternatives to or tweaks on CellFormatting that I might be forgetting? The actual lookup code is fairly simple. Second, I wonder if I'm making assumptions based on the old grid. I would like to hide the columns holding the lookup keys but I find if I set Visible to False, the lookup fails. The best I can do is wipe out the header text and set the column width to 2. Any ideas? Tag: PictureBox.Load and animated GIFs Tag: 113607

Loading an animated GIF using PictureBox.Load causes an
ObjectDisposedException with the message "Cannot access a closed file" to be
thrown in the FileStream.Read method ultimately called by
ImageAnimator.UpdateFrames.

Looking at the output from ILDASM, it seems that the underlying file stream
is being disposed in the PictureBox.Load method. However, KB article 814675
states that the stream must not be destroyed for the lifetime of the image.

Can anyone shed some light on whether the .NET framework really is closing
the stream before the image is finished with.

Thanks

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