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- Previous
  - 1
    - Support for Postscript fonts I have some fonts installed on my machine which I think are postscript format (they are .pfm files), but I can't use these in my windows application. Any reason why not ? Tag: Combo box clearing Tag: 99847
  - 2
    - ScrollBar Bug/ Problem in .Net 2.0? Hi all, I'm mimicking the AutoScroll functionality from a ScrollableContainer on my user control (for reasons of having more control and flexibility), but I seem to have hit a bit of a wall. In the case of having a horizontal scroll bar, I set his .Maximum property to say 167, but when I use the thumb/ button to get to the right-most extent he'll only ever get to a maximum of 158. It always appears to be out by 9. Although I've only tried this on one PC I find it hard to believe I'm the only person who has this problem...can anyone shed some light on this for me? Thanks everyone, Kieron Tag: Combo box clearing Tag: 99846
  - 3
    - Title Bar I wish to replace the tile bar with my own code which will have its own max min buttons etc, but wish to still keep the Border style, if I set the FormBorderStyle property ot none I loose the border of the window, and all the oterh option always provide some sort of title bar. Any Ideas. Thanks Tag: Combo box clearing Tag: 99844
  - 4
    - SplitContainer and GetChildAtPoint I have a UserControl that I have a SplitContainer in. I have placed several Controls in the panel1 and 2 of the split container and I want to be able to do a "GetChildAtPoint" when clicking on the UserControl. However, all I get is the SplitContainer as result. How can I disregard the splitcontainer or how could I find the control underneath the mouse when clicking. I already to PointToClient on the X and Y gotten from MouseDown and pass that point to GetChildAtPoint and that's when it fails to get the child I clicked on. It gets its parent i.e. the SplitContainer. Greatful for any help at all. Tag: Combo box clearing Tag: 99839
  - 5
    - Disable MDI child buttons on parent menu bar Hi all is there a way to disable all the three buttons of a MDI parent menu bar relatives to a maximized MDI child form? What I need is a MDI child that can only be Maximized (or closed). Thank you. C. ------------------------------------------- Carlo, MCP (Windows Based Applications) carlodevREMOVE@gmail.com Tag: Combo box clearing Tag: 99835
  - 6
    - more clues on my multithread problem Hi there i have discovered that my application entirely hangs when the modeless dialog needs to be repainted. Then all the UI becomes unresponsive and the debugger dont let me pause the execution to see where it is each of the threads . The modeless dialog stays as it is been working on something because when i put the mouse cursor over it it changes to the sand watch icon. The main form of the application is no more repainted and i cando nothing except stopping the debugging process (an operation which takes more time than in a normal situation). Does this has a meaning for anyone? A question i have is:What happens when you call the Invoke method on a form to execute a delegate?Does the form stop its message pump to execute the delegate or a message is sent indicating the form that it has to execute that operation? could be the problem in there? Thanks, im getting mad with this project Tag: Combo box clearing Tag: 99831
  - 7
    - Message queue in modeless dialogs Hi, i have a multithreaded application which uses forms and i have a worker thread that has to create a modeless dialog to monitor some of the operation which it has to do. The problem is that if you create the dialog and call show() from the thread this dialog wont't have a message queue and will become unresponsive. I found in a page that you have to create the dialog in the main UI thread.In that case the message queue of the main form will be shared among the main form of my application and the modeless dialog i have created, but there is a problem. If one of them hangs up the other too will hang. The problem is that my application hangs at one point and i dont know exactly the reason , the only thing i know is that it has to be something like a deadlock that causes one of the forms become unresponsive. I want the modeless dialog to have its own message queue independent from the main UI message queue, Â¿how i can do that? i have tried to create a new thread which executes application.run again as i have read that this method creates a message queue for the thread who calls it but the result was not the expected one: my modeless dialog runs ,be sure of it but when i call application exit in the thread of the modeless dialog all the application exit, not only the thread which i was pretending to be th ethread of teh dialog, follow me? Any ideas about this? Tag: Combo box clearing Tag: 99829
  - 8
    - Select Text of Label How can I allow my WinForm user to select/copy/paste the content of a Label? Thank you in advance, Jerry Nixon Tag: Combo box clearing Tag: 99826
  - 9
    - ListViewGroup Color? Anybody know how to set this? listview.ForeColor has no effect on it. If I change my listview forecolor to green the group headers stay black. Tag: Combo box clearing Tag: 99824
  - 10
    - Is there any best methods to deloyment a win-form solutions to over 200 pcs? Is there any best methods to deloyment a win-form solutions to over 200 pcs? Tag: Combo box clearing Tag: 99820
  - 11
    - How to decide the best choice between web-form and win-form for the next solution? How to decide the best choice between web-form and win-form for the next solution? In my case, the new projects will have over 200 users to use and we will apply part-by-part function components add to production environment when we developed a part and parts. The projects will have a very very user friendly UI for powerful analysis and enquiry. Also, the projects should have very high response for user actions. For consider the deloyment, web-form will be very fast solutions. Win-form will need to install one-by-one PCs. It will affect our decide which web-form and win-form to apply. Are there anyone have the best methods or ideas for our considers? Tag: Combo box clearing Tag: 99819
  - 12
    - Displaying HTML/XHTML from source XML file Displaying HTML/XHTML from source XML file i am having an xml file i want to display the contents of the xml file in a web browser control in winforms however i want to display it as html/xhtml after applying formatting. how can this be done? Tag: Combo box clearing Tag: 99818
  - 13
    - PropertyGrid with duplicate DisplayNames Hi group, I have a problem using the PropertyGrid. I'm using a PropertyGrid to show a dynamically generated option dialog. I use an ICustomTypeDescriptor implementation together with a custom PropertyDescriptor that fakes out the needed "properties" for the grid, the actual values coming from a different data source, that can also changed programmatically. The PropertyDescriptor fakes a human friendly DisplayName and an unique PropertyName that is only used internally. Problem: When doing a propertyGrid.Refresh(), GridItems with duplicate DisplayNames are not handled correctly, specifically: If I change the value for any but the first one (in current sort order), after the refresh the FIRST one is always selected, and it shows the string representation of the currently changed entry (however, it DOES paint the value representation correctly). The string representation is only displayed incorrectly, i.e. it is not written back, and after any focus changes, it is displayed correctly. Also, if I make the DisplayNames unique, or the PropertyType differs, the problem goes away. It also does not depend on the PropertyDescriptor/ICustomTypeDescriptor combo, but happens even with static properties (just checked ;-)) Has anyone else encountered this or a similar problem and/or has any tips? Regards Jasper Tag: Combo box clearing Tag: 99815
  - 14
    - WindowsService stops just after it's started - remoting hi, I created WIndowsService to host SAO object. Everything was ok before, but when I get back to it a few days ago i realized that it doesn't work properly. So what I did wrong? Service host remote object so it has work to do and service shouldn't be stopped. The only solution I see is to create Thread with simple loop to keep my service runing - but I know it's bad solution. Please help me with my problem. Piece of sourcecode: internal partial class Server : ServiceBase { private TcpServerChannel chan; private ChainingDeamon chainingDeamon; public Server() { InitializeComponent(); } protected override void OnStart(string[] args) { try { this.NetInterfaceSetup(); } catch (Exception e) { MessageBox.Show(e.Message, "DesServer Startup Error", MessageBoxButtons.OK, MessageBoxIcon.Error); this.Stop(); } chainingDeamon = new ChainingDeamon(Application.StartupPath); } protected override void OnStop() { } private void NetInterfaceSetup() { this.chan = new TcpServerChannel(48004); ChannelServices.RegisterChannel(chan, true); RemotingConfiguration.ApplicationName = "DesServer"; RemotingConfiguration.RegisterWellKnownServiceType(typeof(DesServer.AdminProviderFactory), "DesServer.AdminProviderFactory", WellKnownObjectMode.SingleCall); } } regards Martin Dz Tag: Combo box clearing Tag: 99812
  - 15
    - Problem with multithreaded application (Cont.) Let me be more explicit on the problem: i've been making some testings on my application and i realized that the application hangs in this situation: I have a main window created in the thread which called Application.Run so it has the message loop right? Well, then i have another thread wich represents an entity which has to do its own operations (worker thread created with the thread object) .Then i ask my thread object to show a monitor where it has to write its progress in the operation, this monitor is a non-modal dialog. The worker thread calls a method to obtain the form which represents that monitor: this method will do a call of the Invoke method in the form object which represents the main form of the application and which was created in the thread which called the Application.Run method,follow me? : ) .this invoking is to ask the UI thread to create a monitor form object (i have to create the monitor object in the UI Thread as it will be a non modal dialog which i will show using its Show method so it won't have a message queue by itself ,this is the opposite to what happens if i want it to be a modal dialog:then i call the showdialog method and it will have its own messagequeue and it is not necessary for it to be created in the UI Thread) well thn the worker thread gets its monitor form object and do an Invoke to call its Show method to display it. Periodically the worker thread will do an Invoking to call a methos wich updates the fields of the monitor object. Well everything goes fine but when the monitor is running and i start moving the main form from one side to other of the screen then the hang of the application comes up. I think that it could be because i created the monitor object in such a way that it share the messagequeu of the main form of the application(creating this object in the UI Thread). The problem is that i havent found the way to give a non modal dialog its own message queue independent of the message queu of teh main form. anybodu thinks that this could be the problem???? THANKS Tag: Combo box clearing Tag: 99807
  - 16
    - selection box in datagrid I just added a datagridView to my form and it looks like it adds a 'Selector' box in the header row. That box that is blank, has the * in it if you can add records. How do I get rid of that thing? I can't find any option to get rid of that selector box. Thanks. Tag: Combo box clearing Tag: 99803
  - 17
    - Problem with multithread application Hi there.Im building a multithreaded application which uses forms and im having some problems possibly due to my inexperience. The project is being developed in C# with visual studio 2005. I have a main thread which executes Application.Run() (so it has the message loop for the interface) and later i create more threads that are executing and in some situations have to do some operations in the UI. Some threads also query the UI the creation of non-modal dialogs to show information "on the fly". There arent cross-threaded operations in the UI, im sure of that. All the operations have been queried using the InvokeRequired attribute and the Invoke Method (i have used only the Invoke method instead of using BeginInvoke too) so all the operations on the UI are done in the Thread tha run Application.Run (the UI thread). When i execute my application everything goes fine buty sometimes when i execute it and push some button of one of the windows or when i close one of that windows etc etc my application hangs (well i dont know if my application but at least the UI). I think that the problem is in that im not considering some issue of the using of the UI in multithreading applications, maybe it is taking place a deadlock when im quering the UI tread some operations from different threads Â¿someone can advise me or has any idea about what can be happening? thanks Tag: Combo box clearing Tag: 99795
  - 18
    - Domain Name HI, I have questation about computer domain . How I simpli get this information from computer ? I want use systeminformation , properties userdomainname , but this is user domain ... thanx marek Tag: Combo box clearing Tag: 99794
  - 19
    - DataGridView custom column for- password add and edit Hi All, Please let me know how to impliment a custom datagridview column for a password add and edit functionality. TIA Nikila Tag: Combo box clearing Tag: 99791
  - 20
    - Win application freezes on datagrid scroll event Hallo, I'm experiencing an eerie trouble using datagrids on Windows application with .NET framework 2.0 Being concise, I say that my applications polls the serial port by means of a separate thread. When some information is found on the tool connected to the port (a GSM phone), such an information (SMS) is put in the db and then an event is raised. When such an event is raised, the delegate invokes an appropriate method that refreshes the datagrid: every row in the grid is one received SMS. The refreshing is made by the separate thread, so it is called the appropriate method that enables separate threads to interact with the objects and controls of the UserInterface belonging to the main thread, as it is meant to be. Ok, everything works fine but, say that the datagrid control can show 16 items before the vertical scrollbar appears, when the 17th item has to be shown, instead to visualize the vertical scrollbar, the whole application freezes. No errors are thrown: just freezes - not responding application. Need to kill and restart, and so it's ok: vertical scrollbar appear. I've to say that this behaviour doesn't happen always. Almost always. I mean, sometimes 20 or more SMS are found in the GSM and correctly shown in the datagrid with scrollbar, but the most of times when the 17th is shown, application freezes. I'd be glad if someone could shed some light upon this strange, and unpredictable, event. Many thanks, Paolo P Tag: Combo box clearing Tag: 99788
  - 21
    - Use MeasureString to determine required height I'm trying to create a label control in VB.NET2005 that will automatically change it's height to fit the content. To do that i'm using MeasureString to determine required height for a set width. What i found is that MeasureString sometimes returns the height which is smaller then it should be and it seems to depended on the width. So the question is am i doing something wrong or it's a bug. If it is a bug, can someone recomend a reliable workaround. Here is a code that used to test this. When width is set to 570, the last line is not visible. When it's set to 590 all is OK. Sub TestMeasureString(ByVal g As Graphics) Dim s As Size Dim f As Font = New Font("Arial", 11.25, FontStyle.Regular, GraphicsUnit.Point) Dim str As String = New String("W"c, 1000) & " END" s = g.MeasureString(str, f, 570).ToSize 's = g.MeasureString(str, f, 590).ToSize g.DrawRectangle(Pens.Black, New Rectangle(New Point(0, 0), s)) g.DrawString(str, f, Brushes.Black, New Rectangle(New Point(0, 0), s)) End Sub Tag: Combo box clearing Tag: 99783
  - 22
    - read guid I have a vb.net 2.0 project where I need to read a files guid. Is this even possible? I need to do this via CODE, no 3rd party app please. Can I generate guids all day long but I want to read what a dll file has already been assigned. I know I can painfully search the registry. But there must be a better way. They are vb6 dll's, so they have a type library file. Can that be used? i.e. file "testds.dll" = {000-....} Thanx. Tag: Combo box clearing Tag: 99779
  - 23
    - DataGrid View How do you set the width of row(-1) where the Row[x].HeaderCell are? Also how can you write something in the topleft most cell [-1,-1]? Tag: Combo box clearing Tag: 99777
  - 24
    - Question on Inheriting Controls I have a project which is a Windows Form "Wizard". Each "page" displayed in the main Wizard form will be a user control. Each of these user controls will share many similar attributes. So it seems natural for me to create a base user control class and have all my "pages" inherit from it. But it seems that VS2005 really isn't happy doing this unless the base class is compiled and put into an assembly other than the one containing my project. The visual designer get al hosed up and complains. I can force it all to work by hand-coding some changes but this seems way harder than it should be. Is there something I am missing here? Thanks. Tag: Combo box clearing Tag: 99776
  - 25
    - DataSet and Usercontrol TestContainer has a Problem I have a WebService that has a method that returns a Typed DataSet. I create a UserControl that calls this method. When the UserControl runs by "UserControl TestContainer" and calls the WebService's method which returns a Typed DataSet the error "There is an error in XML document (1, 220)." is thrown. I don't know what's is wrong. This problem only occurs when Typed DataSet is returned and running by "UserControl TestContainer". I'm using .Net Framework 2.0 and VS 2005. Could someone help me? Tag: Combo box clearing Tag: 99775
- Next
  - 1
    - MonthCalendar - Hot to retrieve the Month(s) displayed? How would I determine the first and last day, month and year of the currently displayed month(s)? Withoutout clicking on the day 1 box? Tag: Combo box clearing Tag: 99774
  - 2
    - RichEditBox speed Is there anyway to speed up the selecting and coloring of text in a richedit. The parsing of the text is nothing in comparison with how long it takes these two calls to take place (over many lines): rtb.Select(currentPos, myLine.Length); rtb.SelectionColor = myColor; From my research, there are a few ways to speed up the richedit but none of them help speed up the coloring process: 1) Inherit from the RichEdit and in an overloaded WndProc, ignore WM_PAINTs while updating 2) Use SendMessage to pause redraws/events (EM_SETEVENTMASK, SETREDRAW)while updating 3) Hide the RichTextBox while updating (seems to work the best...but it is still slow) Does anyone else out there have any better suggestions? I want to color the entire richeditbox in one sweep...so I don't have flickering or other noticeable side-effects caused by scrolling. I'm not looking to use a 3rd party control either for a number of reasons. TIA! sb Tag: Combo box clearing Tag: 99769
  - 3
    - State of MdiClient Hi, I'm developing an MDI application and i am having a problem: how do i know the state of MdiClient; what i mean is: when i maximize a MDI child, then close it and then open a new MDI child, it will open maximized, then if i change it's state to Normal and close, then next opened MDI child screen will have state Normal. So i assume that MdiClient keeps state of MDI child windows even if none of child forms exists at the moment. How do i find that? Thank you, MuZZy Tag: Combo box clearing Tag: 99764
  - 4
    - Adding 'object' to Treeview? I have a bunch of related classes that I want to add into a Treeview with a hierarchy. However, Treeview doesn't support the insertion of the root 'object' type into the nodes, which surprises me. I just wanted to add them in and have the mouse events fire back with the reference to the object clicked on. I figured I'd have to override ToString in my classes to have them show up in the treeview in the right way and that would be that. But to my surprise it doesn't seem to work like that and it seems like I have to start messing with data binding... which just seems so overkill for the task that it must be the wrong thing to do. Can't I just add 'object' types like I can to the collection classes? What should I be doing instead? Thanks for any help! Tag: Combo box clearing Tag: 99761
  - 5
    - Is the computer locked? Is there a way using the .NET framework to find out if the machine a service is running on is locked by the user? Tag: Combo box clearing Tag: 99760
  - 6
    - How to Package and Deploy Windows Installer 3.0 I have made setup project (VS 2005) that includes setup of my app and Framework 2.0 How can I check if there is installed Windows Installer 3.1 and if not to install it? I know that I have to add launch condition, but don't know what to type in properties. Thanks Tag: Combo box clearing Tag: 99756
  - 7
    - ReportViewer - Multiple forms or Single form I have finally got the hang of this ReportViewer control. The one question that I have is dealing with multiple reports. If I have, lets say, 10 rdlc reports should I have 10 WinForms to put them on, or put them on one form and programmatically choose which rdlc to use. I have been doing the second option but have been running into some weird data binding sharing issues. Any thoughts/suggestions? Tag: Combo box clearing Tag: 99754
  - 8
    - Notification Icon Hi group, is there a way to make a Notification Icon object available for the entire application?? because, for example, if i have a MDI form (i'm using VS 2005) with a Notification Icon object, and display a modal dialog, the click event on the notification object will not fire while the modal is active. Any suggestions? Thanks in advance Tag: Combo box clearing Tag: 99752
  - 9
    - Serialization hello, i want to do the following: I have an extender provider which is serialized correctly. the vs designer generates the following code for a button for example: myButton.SetMyProvider(this, new MyItem()); Now what I want to do is that he creates a new class first. this class called MyItem has a collection. so i want that the code is generated like the following MyItem Item1 = new MyItem(); Item1.MyCollection.Add(new MyChildItem()); Item1.MyCollection.Add(new MyChildItem()); myButton.SetMyProvider(this, Item1); Is it possible to get the objects serialized a way like that? Tag: Combo box clearing Tag: 99750
  - 10
    - Using System.Web.Mail.MailMessage in Windows Forms Hi, I've written a small proof of concept application to show we can send emails in VB.NET and it works a treat using this piece of code: Dim myEmail As System.Web.Mail.MailMessage = New System.Web.Mail.MailMessage() myEmail.From = txtFrom.Text myEmail.To = txtTo.Text myEmail.Body = txtBody.Text SmtpMail.SmtpServer = "" SmtpMail.Send(myEmail) But if I specify a mailserver in SmtpMail.SmtpServer I get this error: Could not access 'CDO.Message' object. Why does setting SmtpMail.SmtpServer = "" send the email? Does this mean that using System.Web.Mail.MailMessage is reliant on having Outlook or Outlook Express installed (Currently I have Outlook 2003 installed)? Thanks Darren Tag: Combo box clearing Tag: 99748
  - 11
    - Slow Rendering on Windows Forms when I am using graphics as backgr Hello, I am trying to build a KIOSK application, where all windows forms are filled with graphics images and a lot of buttons. The major bproblem is that when the application is running and the forms are ready to display on the screen I see a lot of cuts... for example when I show a form that has a background image (800x600) and about 20 buttons on it, which each of the button has a background image, the render on the screen is not the recomended....! Is there any technique that I could do the rendering smoother and faster??? Many thanks George Barbagiannis P.S. Computer 2.4G 1GB 128MB VGA Tag: Combo box clearing Tag: 99741
  - 12
    - Windows forms Datagrid cell text Hi, I am trying to write some code that will return the text from a datagrid cell when you click on it. So far I have the following code (which maybe completely the wrong way to go about this), which returns the row number, and the column number, but I am not sure how to get the contents of the cell from this. /// Private Sub dg1_MouseUp(ByVal sender As Object, ByVal e As System.Windows.Forms.MouseEventArgs) Handles Dg1.MouseUp 'Returns the room for the datagrid row that has been clicked Dim pt = New Point(e.X, e.Y) Dim hti As DataGrid.HitTestInfo = Dg1.HitTest(pt) If hti.Type = DataGrid.HitTestType.Cell Then MsgBox(hti.Row & " " & hti.Column) Endif /// Thanks Richard Tag: Combo box clearing Tag: 99736
  - 13
    - How to get mouse event when using DesignSurface? Hi all, When I use DesignSurface and DesignSurface Manager to build a Designer, I only can use SelectionService's SelectionChange event to know which component is selected. But I don't know how to get mouse click in the component. Becuase I want to show a contextmenustrip in each component. Thanks, Tag: Combo box clearing Tag: 99733
  - 14
    - Email and .NET Hello, I am trying to format an email and have a .net application open up Outlook or Outlook Express so that the user can simply click Send and have the formatted email send from their email account. I am currently doing this the following way: Dim sParams As String Dim TheTo, TheSubject, TheBody As String TheTo = txtEmail.Text TheSubject = "" TheBody = "" sParams = "mailto:" & TheTo sParams = sParams & "?subject=" & TheSubject sParams = sParams & "&body=" & TheBody System.Diagnostics.Process.Start(sParams) The problem this is that it creates a new instance of Outlook every time the event is fired to create the email. All I want is for a new email to appear and add the data that I want. After about 6 or 7 emails are created this way, Outlook freezes up and stops working. Any suggestions will be greatly appreciated, This is vb .net. Chuck Tag: Combo box clearing Tag: 99730
  - 15
    - Edit different data types in a DataGrid in the same column on different rows Hi All Hopefully someone out there can answer this. I have a data source that displays a set of property names and values (each name/value pair will be displayed on a different row). I want to be able to enable the data source to be edited through the grid, but each of the values on different rows may be a different data type. I know I can apply a column style to set a whole column to display a ComboBox for a selection, a DateTimePicker, etc., but I'd like to know if there's a way to apply the style on a row-by-row basis. In doing this I should be able to display all the property name/value rows and have a different edit mode control appear for the value in each row depending on its data type. I should not neglect to mention that the data type of the value column can be defined programatically, as it's also held in the data source to describe the type of data in the value column. Can anyone please advise if this is possible, or if you'd like more information to clarify the problem. Thanks in advance, Sam. Tag: Combo box clearing Tag: 99728
  - 16
    - clicking MDI child does not activate form... Clicking an mdi child form will not activate the form unless I click on the sizeable border or title/caption bar. Sometimes it works correctly and I can click anywhere on the underlying child form and it pops to the front. Other times, I can type in text boxes of the child for, drop down combox boxes, etc, while the child form remains behind other forms. Gotta love .NET, right? I have noticed countless other posts on this topic going back to 2001, but no resolution. Has anyone been able to track down the cause for this behavior? Tag: Combo box clearing Tag: 99725
  - 17
    - studio deleted my resx file, and now it won't rebuild it properly! I'm using Visual Studio 2003. I have a C# Forms app with several forms. While working, Studio asked to check the .resx file of a particular form out of SourceSafe. It then completely erased the .resx file, leaving the form empty in the Designer. However, all the code is still in the .cs file! Most solutions I've found say to delete the offending .resx file, and Studio will rebuild it for you. Unfortunately, that's not happening here. I close the form, delete the file, and try to reopen the form, but it comes up with a blank form again. This is EXTREMELY frustrating. Does anybody know how to fix this? Lee Crabtree Tag: Combo box clearing Tag: 99724
  - 18
    - CheckedListbox and CheckOnClick I am working with the CheckedListBox and trying to get it to perform functionality similar to the Windows Explorer Choose Details window. The one thing I can't get to work is with the clicking on the checkbox part to autocheck. I can set the CheckOnClick to true, but I don't want it to autocheck if I click on the text part. Only if I click on the checkbox part. Anybody have any ideas on this? Lance Tag: Combo box clearing Tag: 99722
  - 19
    - translucent panel... i need to be able to adjust the opacity of a Windows Forms 'Panel' control. currently, this is available on Forms, but not on Panel controls. can someone please show me a trick to make this happen with panels or any other control that i can use without having to display another Window/Form? much appreciated, ben Tag: Combo box clearing Tag: 99721
  - 20
    - Multithreading in Form Hi All, I am new to C# thread programming. I got one issue. I appreciate if anybody can point what i am doing wrong here. I have created one C#.NET application (VS.NET 2003 and 1.1 Framework). It contains two forms. (Form1 and Form2) Form1 contains only one button. On click of this button two threads will be created. This thread will just display the Form2. Form2 contains only one ActiveX control(Created by me, Works fine in single thread app for last 3-4 years). When i excute this application, if i click on the Button on Form1, Threads are created and it shows the Form2 and ActiveX control. So far its fine. When i close the Forms created by the thread it crashes. When i use the Debuger it says "User Break Point Called" and Call Stack shows following : NTDLL! 7c901230() _CrtDbgReport(int 2, const char * 0x5f4d0cf0 THIS_FILE, int 374, const char * 0x00000000, const char * 0x00000000) line 353 AfxAssertFailedLine(const char * 0x5f4d0cf0 THIS_FILE, int 374) line 39 + 20 bytes AfxWndProc(HWND__ * 0x0141056a, unsigned int 8, unsigned int 16057944, long 0) line 374 + 21 bytes AfxWndProcDllStatic(HWND__ * 0x0141056a, unsigned int 8, unsigned int 16057944, long 0) line 57 + 21 bytes USER32! 77d48734() USER32! 77d48816() USER32! 77d4c63f() USER32! 77d4c665() SYSTEM.WINDOWS.FORMS! 7b823b1e() SYSTEM.WINDOWS.FORMS! 7b823a2b() SYSTEM.WINDOWS.FORMS! 7b896ca4() SYSTEM.WINDOWS.FORMS! 7b82291b() 0096453a() USER32! 77d48816() USER32! 77d4b4c0() USER32! 77d4b50c() NTDLL! 7c90eae3() USER32! 77d48734() USER32! 77d5418d() USER32! 77d53fd9() USER32! 77d5b82a() USER32! 77d54e28() USER32! 77d561b3() USER32! 77d6a92e() USER32! 77d6a294() USER32! 77d95fbb() USER32! 77d96060() USER32! 77d80577() USER32! 77d8052f() __crtMessageBoxA(const char * 0x032fb9c8, const char * 0x102579a0 `string', unsigned int 73746) line 65 CrtMessageWindow(int 2, const char * 0x5f4d0cf0 THIS_FILE, const char * 0x032fcafc, const char * 0x00000000, const char * 0x032feb20) line 520 + 22 bytes _CrtDbgReport(int 2, const char * 0x5f4d0cf0 THIS_FILE, int 969, const char * 0x00000000, const char * 0x00000000) line 419 + 76 bytes AfxAssertFailedLine(const char * 0x5f4d0cf0 THIS_FILE, int 969) line 39 + 20 bytes CWnd::DestroyWindow() line 969 + 21 bytes COleControl::OnFinalRelease() line 358 CCmdTarget::InternalRelease() line 223 CCmdTarget::ExternalRelease() line 234 COleControl::XQuickActivate::Release(COleControl::XQuickActivate * const 0x03356630) line 69 OLE32! 7750de71() OLE32! 7750dbd2() OLE32! 77554a4f() OLE32! 77554a30() OLE32! 77564daf() OLE32! 7750221e() OLE32! 77502171() OLE32! 774ff221() OLE32! 774fee88() OLE32! 775131f0() OLE32! 774fd141() OLE32! 774fd0e9() NTDLL! 7c9011a7() NTDLL! 7c919213() KERNEL32! 7c80cce7() KERNEL32! 7c80b511 My C#.Net app source code looks like this: /// <summary> /// The main entry point for the application. /// </summary> [STAThread] static void Main() { Application.Run(new Form1()); } void MyThreadFunction() { Form frm = new Form2(); //Show the Form which contains the SymFacX. Here "using" is the keyword which will release the frm object(Form2) once its job is done. //If we didnt release this frm object. ActiveX will throw an excetion. As SymFacX will try to delete itself but still frm object contains the reference. using(frm) { frm.ShowDialog(); } //frm.Dispose(); //GC.Collect(); } private void button1_Click(object sender, System.EventArgs e) { //Create Thread newThread1 = new Thread(new ThreadStart(MyThreadFunction)); //Start the Thread newThread1.Start(); //Create Thread newThread2 = new Thread(new ThreadStart(MyThreadFunction)); //Start the Thread newThread2.Start(); } private void Form1_Closing(object sender, System.ComponentModel.CancelEventArgs e) { newThread1.Join(0); newThread2.Join(0); Environment.Exit(0); } Tag: Combo box clearing Tag: 99720
  - 21
    - Setting combo box items property? I am building a user control that has a combo box (comboBoxMain) as a constutient control. The user control has an Items property, which will set the items of the combo box. I want the user control Items property to be browsable at design-time, so the user of the control can click the properties, enter a list of items in the String Collection Editor and have them appear in the combo box. Here's the code I'm using now: [Browsable(true)] [EditorBrowsable(EditorBrowsableState.Always)] [DesignerSerializationVisibility(DesignerSerializationVisibility.Visible)] [Editor("System.Windows.Forms.Design.StringCollectionEditor,System.Design", "System.Drawing.Design.UITypeEditor, System.Drawing")] [Description("The list of objects in the combo box")] public ComboBox.ObjectCollection Items { get { return comboBoxMain.Items; } set { comboBoxMain.Items = value; } } The Editor attribute brings up the String Collection Editor, but it isn't retrieving any items I place in the combo box. And nothing that I enter in the editor is making it back to the combo box. What do I need to do to complete the connection between the user control Items property and the combo box Items property? Thanks. -- David Veeneman Foresight Systems Tag: Combo box clearing Tag: 99716
  - 22
    - No touch deployment - internet cache full We have had a few instances in our organization that the user was unable to run a no-touch deployment exe from our intranet. Clearing their full internet cache corrected this problem. This happened in 2 scenarios: 1. When trying to run the no touch .exe over the intranet would do nothing. 2. When trying to run the .exe over the intranet the user would run their old cached copy of the application and not download the latest from the server. In both scenarios clearing their internet cache and launching the application again corrected this problem. I thought the idea with internet cache is First In, First Out... in thus... cache would be cleared to accomodate new temporary internet files. Is this correct or is there an issue with no-touch deployment in this regard. Has anyone else ran into this problem, and if so what solutions have you come up with. Remember we have a large organization and no touch deployment applications are being used by 100+ individuals. One way I know would be to write a login script to clear the internet cache... of course.. not every user will reboot their PC every night... and isn't ideal for other reasons. Thanks in advance... Tag: Combo box clearing Tag: 99715
  - 23
    - ConfigurationManager app.config Dear Friends, I have been trying to get the following to work properly, but with little luck. I have created a class that inherits from ConfigurationSection. I then added a <configSections> ... <section name="test"> in a new app.config (which I added manually to my project). It seems to be able to read the app.config, but not write back to it. I seem to have a partial/temporary working config file that is created in the bin\debug directory called XXX.vshost.exe.config. It seems to temporarily store the proper values when I save the settings, but seeing that it is rebuilt dynamically everytime the application is run, I lose all settings. What gets to me is that the settings are not written to the app.config file. I get no errors when I execute .Save method. Just no info is written. Does anyone have an example in VB.NET or a guide/tutorial, etc... In essence, I want to use my ConfigurationSection derived class to be able to load and save a custom section in the app.config file as I have seen others do, but can't get it to work myself. Also, any help on how to properly set up an app.config file with the <configSections> etc... properties. Regards, Giovanni Tag: Combo box clearing Tag: 99713
  - 24
    - Data binding a ListBox to a List<T> I have 2 list boxes on the form. Each listbox is bound to a different List<T>. My goal is for the user to select an item in ListBox1, click a button, and have that item moved to ListBox2. The way I approached this was to have a populated List<T1> bound to ListBox1. I set the DataSource, DisplayMember, and ValueMember properties of ListBox1 and the items in the List<T1> were correctly shown in the listBox. I bound ListBox2 to List<T2>. Since List<T2> had nothing in it, ListBox2 correctly showed no items. I thought that if I removed an item from List<T1>, that ListBox1 would update to reflect that but it doesn't seem to work that way. Similarly, I thought that by inserting an item into List<T2>, that the ListBox2 would update to reflect the addition. It does not seem to work that way. How can I get the ListBoxes to update and show the current contents of their respective List<T> objects? Is there a way to "rebind" them? Thanks, Chris Tag: Combo box clearing Tag: 99712
  - 25
    - Create something of ContextMenuStripItem type ???? f I can declare a menu item as : Dim mnuItem As MenuItem then why cant I declare something of ContextMenuStripItem type. There is a collection of items for a contextmenustrip.!! I have a method : private void NewLoad(object sender, System.EventArgs e) { //I need to do something like MenuItem mn = (MenuItem)sender; } In debug when I hover my mouse over "object sender" I get "[System.Windows.Forms.ContextMenuStrip], Name: contextMenuStrip1, Items: 6}" I am baffled Tag: Combo box clearing Tag: 99704

Hi,

I have combo Box clearing when form overlaps...Can't seem to catch the
event.

Why is it doing this?

Re: Combo box clearing by Stoitcho

Stoitcho
Mon Apr 10 08:09:57 CDT 2006

Jared,
Which event exactly and what clears the combobox?
Be more specific, pls?

--

Stoitcho Goutsev (100)

"Jared" <jared@paradigmitz.net.au> wrote in message
news:%23gXJm5DXGHA.2376@TK2MSFTNGP03.phx.gbl...
> Hi,
>
> I have combo Box clearing when form overlaps...Can't seem to catch the
> event.
>
> Why is it doing this?
>
>

Top

Re: Combo box clearing by Jared

Jared
Mon Apr 10 16:48:50 CDT 2006

Thats the thing, i can't catch any event...it just clears after form which
was overlapping is hidden.

"Stoitcho Goutsev (100)" <100@100.com> wrote in message
news:el1a39JXGHA.4988@TK2MSFTNGP05.phx.gbl...
> Jared,
> Which event exactly and what clears the combobox?
> Be more specific, pls?
>
> --
>
> Stoitcho Goutsev (100)
>
> "Jared" <jared@paradigmitz.net.au> wrote in message
> news:%23gXJm5DXGHA.2376@TK2MSFTNGP03.phx.gbl...
>> Hi,
>>
>> I have combo Box clearing when form overlaps...Can't seem to catch the
>> event.
>>
>> Why is it doing this?
>>
>>
>
>

Top

Re: Combo box clearing by Stoitcho

Stoitcho
Tue Apr 11 08:07:24 CDT 2006

Can you repro the problem in a small simple application?

--

Stoitcho Goutsev (100)

"Jared" <jared@velocitynet1.com.au> wrote in message
news:%23VhGPiOXGHA.5012@TK2MSFTNGP05.phx.gbl...
> Thats the thing, i can't catch any event...it just clears after form which
> was overlapping is hidden.
>
>
> "Stoitcho Goutsev (100)" <100@100.com> wrote in message
> news:el1a39JXGHA.4988@TK2MSFTNGP05.phx.gbl...
>> Jared,
>> Which event exactly and what clears the combobox?
>> Be more specific, pls?
>>
>> --
>>
>> Stoitcho Goutsev (100)
>>
>> "Jared" <jared@paradigmitz.net.au> wrote in message
>> news:%23gXJm5DXGHA.2376@TK2MSFTNGP03.phx.gbl...
>>> Hi,
>>>
>>> I have combo Box clearing when form overlaps...Can't seem to catch the
>>> event.
>>>
>>> Why is it doing this?
>>>
>>>
>>
>>
>
>

Top