PropertyGrid does it automatically handle ContextMenu?

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  - 1
    - Win32Execption: The operation completed successfuly Hello developers. This is not my day. I working with a C# WinForms application, I have about 200 hundred WinForms, they are most of them working as I need. But now when I tried to open (not run) one of them in the designer, it take a lot of time (about 45 second) and almost all the time my visual Studio 2003 IDE bring a lot of errors, some of them: 1- Win32Execption: The operation completed successfully 2- Unknown error (0x0) 3- An Error has occurred with the C # compiler is unable to report due to low memory or possible heap corruption. It is recommended that you save al files, close and restart visual studio The visual studio has to be close from the task manager (totally unresponsive) As far I tied to understand what is happening I found that the particular form has 14 typed datasets, and if I take them out of my form it have a normal behavior (of course, my form get a lot of errors), I put them back one by one and the performance get worse and finaly get the same set of errors. And not a particular dataset to blame. My development Laptop have a Pentium M processor 2 Ghz, 1 GB of RAM, and a big and fast H.D. with more than 50 % free space, running windows XP SP2 (firewall enable), McAffe antivirus, MS Anti SpyWare, all the Security updates and framework 1.1 SP1. Please some one make my day. TIA MajorTom Tag: PropertyGrid does it automatically handle ContextMenu? Tag: 88251
  - 2
    - How to control Tooltip font ? I have some data that is columnar, so would like to show it with a fixed pitch font, such as Courier New. Tag: PropertyGrid does it automatically handle ContextMenu? Tag: 88250
  - 3
    - get control by name? Is there a way to get the handle of a control by its name? I am writing a help application on top of an existing .NET app. I know the friendly names (Control.Name) of the controls in the app, I want to get a handle to those controls using the name so I can get the location of the control and show my help message close to the control in question. Is there anyway to get this information from outside the existing .NET app? - sp Tag: PropertyGrid does it automatically handle ContextMenu? Tag: 88248
  - 4
    - Readonly Combobox Is it possible to make a combobox Readonly with .Net 1.1 I have looked around and seen a few other people have asked this question, but the answers have misunderstood the question. By Readonly, I mean as in the Readonly property for a Textbox 1) You should still be able to highlight and copy text 2) The foreground and background colours should remain unchanged 3) Maybe still allow the dropdown, but different values cannot be selected 4) The current text cannot be changed in any way. I don't care how complicated it is to do, but I really need to be able to achieve this. Chris Tag: PropertyGrid does it automatically handle ContextMenu? Tag: 88244
  - 5
    - Data grid developing "sticky" fields I have a form with a DataGrid showing search results from a database. The DataGrid is bound to a DataView that I recreate with different sort options and filter strings in response to user choices. I am also using a TableStyle to control column appearance. If I put the cursor in a cell and change the DataView, sometimes that cell "sicks" and floats above the new results. There is no way to get rid of the stuck cell without relaunching the application. Has anyone seen this behavior? Solutions? Tag: PropertyGrid does it automatically handle ContextMenu? Tag: 88242
  - 6
    - More app icons Hello, I want to add more than one icon to my .net application. One icon for application (as usual) and second icon should be visible as "document icon". I thing it is not possible in VS.NET, but can I use assembly linker or something else? -- thanks and sorry my english ;-) Matthew Tag: PropertyGrid does it automatically handle ContextMenu? Tag: 88235
  - 7
    - Creaing a wizard form Hi all, I recently moved from developing windows apps with Borland Builder to Visual studio.net, With the Borland product I used to create wizards using a tabcontrol, I would then add the pages i required and make the tab for each page invisible, then when the user pressed next or back i would move to the next or previous tab respectively. Since the tabs were invisible they could not see them to click on them and it worked really well. Now I need to create a wizard in a .net app using c#, I put a tabcontrol on my form and added a few pages to it but I can't seem to hide the tabs, I've googled and found that you could remove the pages and only add the one you wanted to view but this would still leave a tab at the top of the form that they could see. Is there a way round this or is there a better way to create a wizard than this using .net and c#? TIA Joe Tag: PropertyGrid does it automatically handle ContextMenu? Tag: 88230
  - 8
    - Toolstrip and inherited forms Hello, I try to use an master form with an menustrip and a statusstrip with several items. I set the prperty modifier to public and created an inherited form from the master. I tried to add additional toolstripitems either to the menu or to the statusstrip without success in the designer. Adding items by code works. What could I do to use the designer features. Thanks for your help Thomas Tag: PropertyGrid does it automatically handle ContextMenu? Tag: 88227
  - 9
    - Display Internet explorer inside a windows form Hi, Is there a way to display (embed) an Internet Explorer inside a windows form ? Is there any control that can do that (be an Interner browser control) ? Thanks Emmanuel Tag: PropertyGrid does it automatically handle ContextMenu? Tag: 88226
  - 10
    - Web Page Content I'm writing a windows forms application that accesses web pages. I've used the web browser control and this works nicely. Now I'm wondering if I can push the content (html) of a web page (as you see from IE when you "View/Source") to a string variable (or whatever) so that I can process it. Tag: PropertyGrid does it automatically handle ContextMenu? Tag: 88225
  - 11
    - Form is not displayed at the correct (designer) size. Hi, I discovered the following problem on windows forms: DESCRIPTION =========== 1. A form (MainForm) calls another form (OtherForm) via a button. 2. OtherForm properties I have changed: - FormBorderStyle = FixedDialog - ControlBox = false 3. The calling form (MainForm) sets the location of the "OtherForm" just before calling ShowDialog() method. OtherForm f = new OtherForm(); f.Location = new Point(100,200); f.ShowDialog(); RESULT ====== The "OtherForm" form is displayed with a wrong Size - other than the one choosen by the designer. Is this a BUG or what ? Thanks Emmanuel Tag: PropertyGrid does it automatically handle ContextMenu? Tag: 88224
  - 12
    - Get the answers! (Dutch) http://www.microsoft.com/netherlands/msdn/events/SDC2005.aspx Tag: PropertyGrid does it automatically handle ContextMenu? Tag: 88223
  - 13
    - use WinForm for webpage Hi all, Can I use my WinForm for a ASP.net webpage? How? Thanks Martin Tag: PropertyGrid does it automatically handle ContextMenu? Tag: 88220
  - 14
    - Databinding and saving changes (if any) to new row Hi there! I am new to databinding in .Net and I think I am going to get crazy... What I need to do is this: 1) Create a new form for the user to enter a new Product 2) Save changes (if any) when the user closes the form But I still couldn't get what I want, even after searching in Google. Anyone can give me a pointer/hint? Here is the details: 1) The form FormProduct (in which textboxes are bound) gets loaded: private void FormProduct_Load(object sender, System.EventArgs e) { cmProduct = (CurrencyManager)BindingContext[dsProduct,"Products"]; LoadData(); cmProduct.AddNew(); } 2) Users either enter something or just close the form 3) Before closing the form, save any changes (I am stuck here): private void FormProduct_Closing(object sender, System.ComponentModel.CancelEventArgs e) { cmProduct.EndCurrentEdit(); // Saw this in several places already if(dsProduct.HasChanges()) SaveData(); } The problem is this: if I don't call cmProduct.EndCurrentEdit(), then changes will not be detected. But if the user hasn't entered anything, they just close the form (like a cancel), dsProduct.HasChanges() will return true (because we added a row in the dataset). Any solution? Tag: PropertyGrid does it automatically handle ContextMenu? Tag: 88219
  - 15
    - Bastardized TabControl Greetings, I was wondering if anyone knows if the following implementation of TabControl exists out there. TabControl would have 2 sets of tab pages. Both sets are aligned at the top of TabControl, only the first set is aligned at the top-left corner and the second - top-right. Regards. Tag: PropertyGrid does it automatically handle ContextMenu? Tag: 88218
  - 16
    - dataGrid - Detect new row being added and prefil columns with data I want to detect when a new row is added to my datagrid. At that time I want to fill all the columns with some initial values before the user gets to start editing them. These values are not always the same, they will dpeend on who is using the program at the time, the machine they are on and variuos other factors. Because of this I cannot use the solution that assigns default values to all columns Any ideas? RichardF Tag: PropertyGrid does it automatically handle ContextMenu? Tag: 88211
  - 17
    - Don't use the object: ActiveForm unless you check it for null each Don't use the object: ActiveForm unless you check it for null each time you do. This object is in my opinion flawed and not all that useful since it becomes null when the form loses focus. I am posting this warning lest you too fall into the trap of using the ActiveForm.refresh() method instead of the tnis.refresh(); method. They are not the same and you may or maynot find your program crashing because you did not first check each time you call the refresh method associated with the object again try not to use ActiveForm object and instead use the this object of the form or the actual form itself. I think this is a bad design for ActiveForm object. Bottom line is do not use it unless you are absolutely forced to. Instead use the this.object Here is the original error message I ultimately solved: System.NullReferenceException: Object reference not set to an instance of an object Tag: PropertyGrid does it automatically handle ContextMenu? Tag: 88209
  - 18
    - ANN: Advanced auto-layout panels plus XAML-style interpreter for 1.1 We have released a library containing a couple of automatic layout controls targetted at .Net 1.1 similar to the the FlowLayoutPanel and TableLayoutPanel in Avalon. Also packaged with these are a basic XAML-style interpreter which works well with existing Windows.Forms controls. These are useful for: - creating resolution-independent applications (especially for those who are long-sighted) - internationalisation (automatic static text translation included in the interpreter) - allowing you to create central visual style rules for an application via XSLT processing of XML script files. Find out more at http://www.regulussystems.com/VersaForms Tag: PropertyGrid does it automatically handle ContextMenu? Tag: 88208
  - 19
    - Creating a localized control In my application, I am providing a plugin capability by using an interface to specify what the plugin should do. One of the functions is 'CreateConfigurationControl' which returns a UserControl. I am now trying to localize the application, and I'm setting the Thread.CurrentThread.CurrentCulture and CurrentUICulture objects as the very first thing in my Main(). The forms that are created normally are all appearing as their localized versions, but the control that I receive from the CreateConfigurationControl is not, even though there is a localized version defined. In order to actually create the control, I've tried a simple 'new ConfigControl()' and Activator.CreateInstance, passing Thread.CurrentThread.CurrentUICulture to the appropriate version of CreateInstance(Type, BindingFlags, Binder, object[], CultureInfo), but I still get back the default English version... Any suggestions on what I might be doing wrong, or if there is an easier way to guarantee that I get back the correct localized version of my control? -mdb Tag: PropertyGrid does it automatically handle ContextMenu? Tag: 88203
  - 20
    - MeasureString() and ClearType Hi all, When I draw a string with TextRenderingHint.ClearTypeGridFit the width of the drawn string is wider than what is returned by MeasureString. I had hoped that setting the TextRenderingHint prior to calling MeasureString would solve this, but it did not. Any ideas on how to get the actual width of the drawn string when using ClearType? Thanks, Cole Tag: PropertyGrid does it automatically handle ContextMenu? Tag: 88200
  - 21
    - Login windows -> Child form, strange behaviour on minimize Hi all, I've got a typical windows form application with a login form, when I login, the login form will be hidden and a new window will appear. For this, I'm using .Show() method, and not .ShowDialog() because there's a chance of reloading a different ini file during login and I want to allow the user to reuse the login form (and it's credentials), and when the user reloads the login form will became visible and the the other window will became hidden. If he really tries to login again then I will kill the new window and create a new one. This all works fine, the problem happens when I try to minimize the login form, a small box appears in the left corner just like a mdi window when we minimize it on the main form. I would like for this "box" not to appear, and the form simply disapears and when I press the on the icon of the taskbar the window would appear again, just like any windows form application. Any help? Thanks, Luis Miguel Pinho Tag: PropertyGrid does it automatically handle ContextMenu? Tag: 88197
  - 22
    - How do I close an OpenFileDialog window from outside the window? I have an application that is displaying an open file dialog window: System.Windows.Forms.OpenFileDialog myDialog = new OpenFileDialog() DialogResult myResult = myDialog.ShowWindow(this) After a timeout, I want to close this dialog (basically, if the user does nothing for a period of time, I want the dialog to close). I have created the timer which fires at the appropriate time but I am having difficulty finding out how to close the dialog once I receive the message. Any suggestions appreciated. Tag: PropertyGrid does it automatically handle ContextMenu? Tag: 88196
  - 23
    - Add image to a control...reposted from languages.vb I originally asked this in languages.vb, and someone there suggested I post it here instead. The requirement I've been tasked with is to have a textbox that has an image in it (a magnifying glass) always on the right side of the textbox, but still in the edit portion. The image should be BEHIND the text, and if clicked on then would fire an event. The suggestion I got from the other group (Carlos J. Quintero, the illustrious maker of MZ-Tools) was to make it an ownerdrawn textbox. He said that all I'd probably need to care about would be the paint event and the click event. In VB6 I'd subclass the textbox and watch for the WM_PAINT message, but in .Net I have NO idea where to start on this. Can someone point me in the right direction? Thanks. Matt Tag: PropertyGrid does it automatically handle ContextMenu? Tag: 88195
  - 24
    - changing the height of a columnheader in datagrids hi I would like to change the height of the columnheaders on a datagrid. this is to accommodate a multiple line header title. example: ___________ Appointment | time | ---------------| also to override the columnheader text alignment so that it doesn't cause the datagrid textbox (cells)to have the same Text Alignment Thanks Al Tag: PropertyGrid does it automatically handle ContextMenu? Tag: 88189
  - 25
    - Localization question I'm writing an application that needs to be localized into German. I've set the Localizable to 'true' and the language to 'German' on my form. I've translated all of my controls. However, I have a UserControl on my form (which I have also localized to German) but the designer still shows it in English. I have recompiled so I know that the designer should know about the localized version of the UserControl. Is this the expected behavior, or should I see the localized German version of my UserControl as well? Also, is there any way I can specify on startup what language I want to use? I'd like to run my program in "German mode" to make sure I haven't missed anything. Thanks! -mdb Tag: PropertyGrid does it automatically handle ContextMenu? Tag: 88188
- Next
  - 1
    - RichTextBox - beeping I am programatically adding blocks of text to a RichTextBox control and it constantly "beeps" when doing so. The program is reading an xml file line by line and when it finds certain attributes it changes their values to a different color. This means that a line of xml might have its color changed several times. I thought it had to do with the changing colors but when i commented that code out it still beeped. If i write the entire line without substringing it together i get no beeps. It only seems to happen when i break the line up and substring it back together. example: the True part will beep but the false part will not. Color changing has been omitted since it's not a factor. if (true) { rtb1.SelectedText = line.Substring(0,10); // originally set color to black rtb1.SelectedText = line.Substring(11,10); // changed color to red rtb1.SelectedText = line.Substring(21,10) + "\r\n"; // changed back to black } else { rtb1.SelectedText = line + "\r\n"; } Anyone know why this happens and is there a way to stop it? Thanks, David Tag: PropertyGrid does it automatically handle ContextMenu? Tag: 88186
  - 2
    - Multithreaded WinForms question My application's form is handling an event raised from a worker thread in another object. In the event handler I want to call a sub procedure that does a number of things and among those things is accessing controls on the form. This sub procedure normally has been called from the Click event procedure of a button on the form so there haven't been any issues with accessing controls from outside the UI thread. Now I have to consider this. I could create delegates for all the procedures I need to Invoke on the controls but I was hoping there was a simpler way. Is there any way to force the UI thread to call a sub procedure without using Control.Invoke ()? For example: Private myObj As MyObject Private Sub MainForm_Load ... ... AddHandler myObj.SomeEvent, AddressOf MyObject_SomeEvent ... End Sub Private Sub MyObject_SomeEvent(ByVal whatever As Integer) ' SomeEvent is raised by a worker thread in MyObject. ' How can I force the UI thread to call SomeProcedure ' from here so I don't have to litter the SomeProcedure ' Sub with If...Then...Else structures testing ' Control.InvokeRequired() and calling Control.Invoke() ' with various custom Delegates that I have to create? End Sub Private Sub SomeProcedure(ByVal whatever As Integer) ... Do Stuff SomeTextBox.Text = "Gooney Goo Goo" ... End Sub Hopefully I'm making sense here. I may be a little confused and not realize it yet. Joel Moore Tag: PropertyGrid does it automatically handle ContextMenu? Tag: 88185
  - 3
    - custom objects in clipboard Hi, I am trying to put my custom object in the Clipboard but when I try to retrive, I get "Nothing". Let me show you how I am doing this, ' putting data into the clipboard Dim dataObj As New System.Windows.Forms.DataObject dataObj.SetData(System.Windows.Forms.DataFormats.GetFormat("MyClass").Name, False, objOfMyClass) System.Windows.Forms.Clipboard.SetDataObject(dataObj) ' retrieving from clipboard Dim dtObj As System.windows.forms.IDataObject = System.Windows.Forms.Clipboard.GetDataObject() If dtObj.GetDataPresent(System.Windows.Forms.DataFormats.GetFormat("MyClass").Name) Then objOfMyClass = CType(dtObj.GetData(System.Windows.Forms.DataFormats.GetFormat("MyClass").Name, False), MyClass) End If I am getting "True" from the following command dtObj.GetDataPresent(System.Windows.Forms.DataFormats.GetFormat("MyClass").Name But "Nothing" from the following one dtObj.GetData(System.Windows.Forms.DataFormats.GetFormat("MyClass").Name, False) Please give your suggestions how can I fix it. Regards, Naeem Tag: PropertyGrid does it automatically handle ContextMenu? Tag: 88182
  - 4
    - Control OnMouseDown and OnMouseUp called twice - surely a bug? I'm noticing strange behaviour with System.Windows.Forms.Control. If I press the mouse (left button), then move the mouse while still holding it down, and then release the mouse, I get an extra set of OnMouseDown and OnMouseUp. So I get OnMouseDown, OnMouseUp, OnMouseDown, OnMouseUp even though the mouse has only been pressed and released once. Does anyone know about this? I think this is surely a bug. It's easy to replicate. Add this code to a new user control and put an instance of the control on a form. Protected Overrides Sub OnMouseDown(ByVal e As System.Windows.Forms.MouseEventArgs) Debug.WriteLine("OnMouseDown") MyBase.OnMouseDown(e) End Sub Protected Overrides Sub OnMouseUp(ByVal e As System.Windows.Forms.MouseEventArgs) Debug.WriteLine("OnMouseUp") MyBase.OnMouseUp(e) End Sub You might have to try a few times to see it, but it usually only takes a few efforts. It seems easier to replicate if I drag the mouse from the bottom of the control towards the top! Thanks in advance. Tag: PropertyGrid does it automatically handle ContextMenu? Tag: 88181
  - 5
    - DateTime picker control Hi, How can I set the background color of DateTime picker control when its disabled. Regards, Naeem Tag: PropertyGrid does it automatically handle ContextMenu? Tag: 88179
  - 6
    - reply(how to get the textvalue from checkedlistbox) (Type your message here) just saw your problem try this ChkListSupplementaryCode is the name of the checkedlistbox For i = 0 To ChkListSupplementaryCode.Items.Count - 1 MessageBox.Show(ChkListSupplementaryCode.GetItemText(ChkListSupplementaryCode.Items.Item(i))) Next -------------------------------- From: thariq Sulaiman ----------------------- Posted by a user from .NET 247 (http://www.dotnet247.com/) <Id>iBM7QrjyO024qDXhi66XWQ==</Id> Tag: PropertyGrid does it automatically handle ContextMenu? Tag: 88176
  - 7
    - Application does not shut down even after Application.Exit Hi I am facing a weird problem with Application.Exit in Windows 2003 (No Service Packs). After this statement is executed, the application does not go down and CPU usage goes up to 100. This problem occurs only in Windows 2003. Windows XP (SP2 and SP1) are just fine. Does this have any thing to do with COM Interop or license of components? I have a VB6 OCX control and ComponentOne True DBGrid. Any help would be greatly appreciated. Thanks and Regards Prasanth Tag: PropertyGrid does it automatically handle ContextMenu? Tag: 88169
  - 8
    - Modeless Form visibible but inivisible PLEASE PLEASE HELP Hi, We have an application which contains numerous ChartFX controls. Basically the user can double click on an existing chart, and it will open a new (modeless) form which contains a new chart. The problem is that the new window although appearing to be the focussed window isn't, as the user has to click on it twice (one click seems to be passing right through to the parent form) before the window is actually selected. This wouldnt be such a big problem except that if the user right clicks on the chart we get a "Cannot display context menu on invisible control" error, even though the control is visible. I guess that basically somehow the modeless dialogue window is not visible to the underlying code, and the events arent firing properly. I have tried everything I can think of to fix it including calling Select(),Activate(),BringToFront() etc on the new window but none of them make any difference. I have even triggered mouse events on the new window to try to focus it automatically. I am pretty much desparate to make this work so Can anyone please help me? Thanks, David -------------------------------- From: David Brooks ----------------------- Posted by a user from .NET 247 (http://www.dotnet247.com/) <Id>OnD6s6O1MEaz/WOzww1bkA==</Id> Tag: PropertyGrid does it automatically handle ContextMenu? Tag: 88157
  - 9
    - Administrating the registry Hello, How can I programmatically set user rights to a particular registry key? Is this possible? All I have found so far is checkaccess to see if I can access a key. For instance, If I want to set the ASPnet account to read only on a registry key HKEY_LOCALMACHINE\software\mystuff\ ? Tag: PropertyGrid does it automatically handle ContextMenu? Tag: 88156
  - 10
    - Screen.WorkingArea Changed Event? Hi all, First the question: Is there a way to be notified when the WorkingArea of the Screen changes? (for example, the taskbar is moved from bottom to left of desktop) Here are the details of the problem if you are interested. I have a form where I set the Region property. Everything works fine until you move the TaskBar to the left or top of the desktop. This then skews my Region's location and it appears incorrectly. The problem is caused when I translate my Region to the screen coordinates (using PointToScreen and Region.Translate). If the taskbar is on the left or top, the region gets "pushed" to the right or bottom. However, this position is incorrect. I solved the issue by offsetting the region location using Screen.WorkingArea's x and y values. Then I ran into a performance problem. I have to recalculate the region quite a bit and it caused a performance issue. I was using Screen.FromControl() everytime I was recalculating the region (My application must support multiple monitors) and I believe this was the culprit. I have worked around the issue by caching the working area myself and testing if my Form moves from one monitor to the other via the LocationChanged event. The only problem is I need to know when the WorkingArea changes so I can update my cached workingArea and also re-translate my region. TIA Cole Tag: PropertyGrid does it automatically handle ContextMenu? Tag: 88151
  - 11
    - (newbie) Slow Combobox Binding I'm fairly new to winforms, but I've been playing around with ASP.NET for a while, so I'm familiar with a fair bit of the framework, however I'm having an annoying issue when trying to bind a simple arraylist to a combobox. All I want the combobox to be is a simple dropdownlist and I'll grab the SelectedValue from it to do other stuff elsewhere, so what I thought I could do is : myCombo.DataSource = myArrayList; myCombo.DisplayMember = "Name"; myCombo.ValueMember = "ID"; Where myArrayList is an ArrayList (shock!) of simple objects with the properties "Name"(string) and "ID"(int). (very basically, their class definition is just : public class myClass { myClass() {} myClass(int ID, string Name) { this.Name = Name; this.ID = ID; } public string Name; public int ID; } - it's not quite that dumb, but you get the idea) I'm finding that not only is DisplayMember *completely ignored* (i.e. all the entries in the combobox merely display "myNamespace.myClass"), but the binding process seems to take an inordinately long amount of time - somewhere up to 5 seconds. I thought initially it was a database access time or the size of the ArrayList slowing it down, but I actually reduced it to : ArrayList myArrayList= new ArrayList(); myArrayList.Add(new myClass(1, "First")); myArrayList.Add(new myClass(2, "Second")); myCombo.DataSource = myArrayList; myCombo.DisplayMember = "Name"; myCombo.ValueMember = "ID"; and it still takes seconds! Can anyone shed any light on this? thanks in advance, -- jo inferis Tag: PropertyGrid does it automatically handle ContextMenu? Tag: 88150
  - 12
    - How to set the max row number in the datagrid. I use the datagrid to let the user edit the data in a table, say 6 row, 8 column, but I don't want the user hits enter at row 6 and the datagrid automatically append a new row on the datagrid (view). How can I set the max row limit? Also, I don't know if all of you have noticed, when you add just one row to a datatable and display it in the datagrid, you will see your data in the first row and a blank in the second row. Is there a way of just show one row of data but not additional blank? Thank you. lz Tag: PropertyGrid does it automatically handle ContextMenu? Tag: 88148
  - 13
    - Newbie to WinForms How can I update the text form the main form StatusBar from child windows ? Tag: PropertyGrid does it automatically handle ContextMenu? Tag: 88143
  - 14
    - GDI resource leaks: Calling Dispose after ShowDialog I am fighting exhausted resources in a large application with many forms. It manifests itself by EVENTUALLY not being able to load an ImageList. In researching this I see advice in previous postings to call Dispose on a form when finished with the object, after a ShowDialog. It is suggested this is necessary to avoid GDI resource leaks. My question is, what about when you open the form non-modally with Show? Will the form do its own Dispose, or am I obligated to find a way for this to happen? If so, can someone suggest a strategy for managing this? - Lee Tag: PropertyGrid does it automatically handle ContextMenu? Tag: 88142
  - 15
    - When opening a form: Failed to load ImageList When opening a non-modal dialog form which has an ImageList that I use for a Treeview, the program crashes. This does not occur consistently, but certainly often enough to be very annoying. It has happened two days in a row now for one user. The exception trace suggests to me that the .NET Framework is attempting to extract the bitmaps from the DLL resources, or such? It appears to be happening before any user code is being called. I have seen others report this problem, but never a resolution. It would seem to be a Framework bug to me. But maybe there is something I am doing? Any clue why this could be happening, or more importantly, what I can do about it? ************** Exception Text ************** System.Reflection.TargetInvocationException: Exception has been thrown by the target of an invocation. ---> System.InvalidOperationException: Failed to load ImageList. at System.Windows.Forms.ImageListStreamer..ctor(SerializationInfo info, StreamingContext context) --- End of inner exception stack trace --- at System.Reflection.RuntimeConstructorInfo.SerializationInvoke(Object target, SerializationInfo info, StreamingContext context) at System.Runtime.Serialization.ObjectManager.CompleteISerializableObject(Object obj, SerializationInfo info, StreamingContext context) at System.Runtime.Serialization.ObjectManager.FixupSpecialObject(ObjectHolder holder) at System.Runtime.Serialization.ObjectManager.DoFixups() at System.Runtime.Serialization.Formatters.Binary.ObjectReader.Deserialize(HeaderHandler handler, __BinaryParser serParser, Boolean fCheck, IMethodCallMessage methodCallMessage) at System.Runtime.Serialization.Formatters.Binary.BinaryFormatter.Deserialize(Stream serializationStream, HeaderHandler handler, Boolean fCheck, IMethodCallMessage methodCallMessage) at System.Runtime.Serialization.Formatters.Binary.BinaryFormatter.Deserialize(Stream serializationStream) at System.Resources.ResourceReader.LoadObject(Int32 pos) at System.Resources.RuntimeResourceSet.GetObject(String key, Boolean ignoreCase) at System.Resources.ResourceManager.GetObject(String name, CultureInfo culture) at System.Resources.ResourceManager.GetObject(String name) at PPSManager.frmVolumeNavigator.InitializeComponent() at PPSManager.frmVolumeNavigator..ctor() at PPSManager.frmMain.PrintVolumeNavaigator(Object sender, EventArgs e) at System.Windows.Forms.MenuItem.OnClick(EventArgs e) at System.Windows.Forms.MenuItemData.Execute() at System.Windows.Forms.Command.Invoke() at System.Windows.Forms.Control.WmCommand(Message& m) at System.Windows.Forms.Control.WndProc(Message& m) at System.Windows.Forms.ControlNativeWindow.OnMessage(Message& m) at System.Windows.Forms.ControlNativeWindow.WndProc(Message& m) at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam) Tag: PropertyGrid does it automatically handle ContextMenu? Tag: 88140
  - 16
    - Cancel Load-event How is it possible to cancel the Load Event of a form? I do some tests in the Load event and if they fail a message box should be shown, and the form should never be shown? How to code? Best regards Benjamin SWEDEN Tag: PropertyGrid does it automatically handle ContextMenu? Tag: 88139
  - 17
    - A Newbie Question Hi All, I'm trying to develop a prototype for a small Room Booking application. This is a 3 tier application. The presentation layer consists of Windows Forms. There will be multiple concurrent clients. The application needs transaction supportivity.I thought of developing in .NET C#. The data base is going to be SQL Server 2000. I thought of following the design guidelines mentioned in the MSDN,Application Architecture for .NET Designing Applications and Services from Microsoft (http://msdn.microsoft.com/library/default.asp?url=/library/en-us/dnbda/html /distapp.asp). I have some questions. For my distributed application which technology would be best suitable?. Enterprise Services COM+ components or .NET remoting or Web Services? How can I take the decision? My application needs quick response (Speed is important). Thanks in advance. Regards, Risath Tag: PropertyGrid does it automatically handle ContextMenu? Tag: 88131
  - 18
    - Please help - how to call a web link in a windows form... Dear Experts, I am asked to develop a Windows Application that calls to a given web link (e.g. http://localhost/Test.aspx?id=1234) and catches the returned HTML from this link (returned from web server of course). I really have no idea on how to accomplish this. Could you please give me some hints on resolving this or please indicate any resources/references that I can refer to? Thanks a lot for your help. Tigger -- I am Tigger. Tag: PropertyGrid does it automatically handle ContextMenu? Tag: 88128
  - 19
    - simply question.... can i do something like this in C# / VB.NET? ======================================================================== my $agent = LWP::UserAgent->new (requests_redirectable => ['POST', 'GET', 'HEAD']); $agent->agent("Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.0)"); $agent->cookie_jar(HTTP::Cookies->new(autosave=>1)); my $url="http://www.comcom.com/login.asp"; my $result = $agent->get($url); %formfields = (status => 1, username => 'myuser', password => 'mypassword'); $result = $agent->post($url, \%formfields); my $html = $result->content(); if ( $html =~ /password/i) { $errStr .= "Login to $url failed - Customer# $customerID: $"; return 0; } ======================================================================== Tnx. Tag: PropertyGrid does it automatically handle ContextMenu? Tag: 88108
  - 20
    - large forms slow in designer For a while now I've been writing a point-of-sale application that has many tab pages each with lots of components. The designer is getting very slow at loading it, i'm wondering if there are any recommended practices for splitting up the tab pages? I was able to make each page its own control and although it spead things up a bit, its a pretty lame approach. What do all of you do when you have forms with hundreds of components on different pages? thanks. Lloyd SLOW30 Tag: PropertyGrid does it automatically handle ContextMenu? Tag: 88106
  - 21
    - Where can I see my logs? I am developing a c++ application using windows forms. I have added to it some classes I had developed for a console application. They compile and run well, but I don't know where I can see the logs (which would give me essential information!) that those classes write using cout. Are they collected somewhere so that I can read them? Where does cout write now if anywhere at all? Thanks Tag: PropertyGrid does it automatically handle ContextMenu? Tag: 88104
  - 22
    - C# Windows Forms - GDI Leaks Hi All, I'm a bit new to the windows forms world, about 95% of my work is service related, I usualy make console applications, no graphic interface, the maximum interaction with client is "Press X to stop application". Now, in the windows forms world my application gets bigger and bigger whenever I open and close a window (I'm making a MDI application) What I mean is, the number of GDI objects, the number of handles raises, the VM memory, what must I do? Should .NET framework take care of disposing all the graphic object no longer in use? If not, what can I do to prevent this? In my company we use Rational Purify to search for mem leaks in C++ or C can I use it to check leaks in C#? Thanks for all the help you can give me, Luis Pinho Tag: PropertyGrid does it automatically handle ContextMenu? Tag: 88102
  - 23
    - Question about Infragistics Grid and combo box I am using an Infragistics grid and combo box. I have a table of information that I would like to edit that has a foreign key in it. I would like to show the user friendly description in the grid, then when the user clicks on the grid, the the value can be changed through the combo box. This combo is not one of the in grid combos, it is a seperate one on the form. One of my requirements for these data entry forms is that in-grid editing of data is not allowed. What is the easiest way of doing this. Most of the examples that I have seen are geared toward the in-grid combo box, not a seperate one elsewhere on the form. Tag: PropertyGrid does it automatically handle ContextMenu? Tag: 88098
  - 24
    - I can't modify a MaskedTextBox control in binding. I do not succeed to modify the content of a MaskedTextBox control whose Property "OutputText" is in binding with field of type text of one table in database a MDB. The control has been generated making a drag-and-drop of the respective field from the window of the "Data Sources" of the plan and associating to same a control of the MaskedTextBox type to whose property "Mask" has been assigned the following string "00.00.00" (to represent a time). Only if i not set this property, I can to modify of the value, but in this way I do not formatting automatic input of the customer. From the same control, I want to be able to visualize the value of the field and to only modify of the value (in sure conditions). The development environment is Visual Basic .Net Express with Framework 2,0 Beta. Councils are accepted, Thanks, dumbo. Tag: PropertyGrid does it automatically handle ContextMenu? Tag: 88095
  - 25
    - AutoScale Doesn't Behave How I Expect/Hope I have just been playing with AutoScale and I am unhappy with the way it appears to work. I have a form created on a desktop m/c where the screen font is Normal (96 dpi). The form looks fine at design time and runtime. I run the application on my laptop, where the screen font is set to 120 dpi (125%), and the form does not look fine. The line height of a listbox on the form is too small, labels are truncated, and things generally look cramped. AutoScale is set to True. I notice that when I open the designer on the desktop, the AutoScaleBaseSize is (5, 13). When I open the designer on the laptop it is also (5,13). If I then change the AutoScale property in the properties window and look again at AutoScaleBaseSize, it has changed to (6,15). Now when I run the application on the laptop all is well. Well, almost. I should point out that user controls on the form still do not scale correctly, and since they do not have an AutoScale property, all I can think of doing is calling the Scale() method with a parameter of 1.25. The problem with this approach is that I would have to do this for every user control, and there are a lot of them. It doesn't seem right that I have to add special code to all my user controls to get them to scale properly. Furthermore, I haven't discovered (yet) how to determine the correct scale factor at runtime. I thought that the point of the AutoScale property was that a form would display correctly on m/cs with different display settings, without having to rebuild on that m/c. It doesn't look like that is what really happens. Have I missed out a step here? Does anyone know the correct procedure for making this work? TIA Charles Tag: PropertyGrid does it automatically handle ContextMenu? Tag: 88093

Can the PropertyGrid Control automatically handle the ContextMenu or should
I provide one?

When I right click on the control (at runtime) it does nothing.

Best Regards,
Alejandro Lapeyre

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