Tree control allowing multiple parents for a node (Graph)

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  - 1
    - why are my arrow keys not responding? hi all i have a dot net form. i capture all keyboard events. everything works nice. except for the arrow keys. which are completerly ignored. when writing a brand new application from scratch, i am able to capture all keyboard events including arrow keys. but in my big application, they are ignored. what could be causing this effect? assaf Tag: Tree control allowing multiple parents for a node (Graph) Tag: 77838
  - 2
    - Improved NumericUpDown control Hi all I am trying to implement an "improved" (silly users :-) NumericUpDown control. This control is meant to display floating-point values and the improvement consists in being able to mouse-select one digit of the FP value and when pushing the up/down arrow, increment this digit. The only solution I figured out so far (not implemented though) is the "hardcore" way, i.e. trap the events to check which digit is selected (yuck... variable size font ??). Does anybody can think of an alternate way to achieve this ? TIA a+ Nicolas Tag: Tree control allowing multiple parents for a node (Graph) Tag: 77836
  - 3
    - Microsoft.VisualBasic.ChrW(13) Is there another way to check for keyboard inputs? I'm using the Microsoft.VisualBasic namespace: e.KeyChar <> Microsoft.VisualBasic.ChrW(13) I'm not sure but it seems to me that it is not the optimal way to use the new .net classes and namespaces. is this correct? Any sug? Tag: Tree control allowing multiple parents for a node (Graph) Tag: 77825
  - 4
    - Shockwave Player in Windows Forms? There are plenty of posts regarding using a Flash player in standalone Windows Forms apps, but what about the Shockwave player? I don't know much about the differences between Shockwave and Flash, but I've been told that you can do far more with Shockwave. Tag: Tree control allowing multiple parents for a node (Graph) Tag: 77824
  - 5
    - Crystal Report file comparing tool Hi I need Crystal Report file comparing tool I have over hundred reports to see what changes between tow reports like Line objects position Text objects text or font. Is there any tool can do that. Thanks in advance for help Tag: Tree control allowing multiple parents for a node (Graph) Tag: 77802
  - 6
    - Using the same components and controls in multiple tabs? How can I use the same controls and components in more then 1 tab collection? The tab control covers the entire window. The different tabs are going to contain some unique components and some common components. I do not want to have repeat the common parts. Thanks Tag: Tree control allowing multiple parents for a node (Graph) Tag: 77801
  - 7
    - detecting print preview Hello Can I determine (in the PrintDocument::PrintPage method) whether the page is just previed or printed? Thanks Vaclav Tag: Tree control allowing multiple parents for a node (Graph) Tag: 77799
  - 8
    - Maintaining and Using App Login details Hi, I'm developing an Windows forms based app that will draw data from a SQL Server 2000 system, that is set to use SQL Authentication (i.e. connection string must pass uname:pword). Given that various forms will need to use a SQL connection to generate data for data grid's etc ... how can I pass this authentication information around the various forms? A solution is to start the application from a VB.NET class, that has a shared member with the connection string (set once the user completes the login) Or create a shared connection object? Should I create a new connection object for each form? I currently test whether the login credentials are correct by enclosing within a try..catch clause an attempt to open and close a connection, failure will indicate invalid details (or perhaps a dead SQL Server!) ... any improvements on this? I assume that when using the form designer in VS.NET that if I manually program the connection (i.e. outside the section of code written by VS.NET ) that I can point the adapters/datasets etc. to the required connection. There are a few questions here ... but I've not so far found any answers here, on Google or elsewhere :( ! Thanks in advance for help Tag: Tree control allowing multiple parents for a node (Graph) Tag: 77795
  - 9
    - normal drag and drop behaviour hi all when i allow drag and drop from/to my textbox, i expect that when i hover over a selected aread, the cursor would turn into an arror, instead of an I-Beam. but this is not the normal behaviour. i don't know how to make the textbox behave this way. all i want is my app to behave as any other app in the world behaves, when i hover over a selected text area, the cursor turns into an arrow. how can i do this? assaf Tag: Tree control allowing multiple parents for a node (Graph) Tag: 77790
  - 10
    - KeyUp event routing issues in Windows Forms. I believe I have found a bug in how keyboard events are routed in Windows Forms. I am not sure if this is a bug or how to work around it. MessageBoxes (MessageBox.Show) that are opened over top of a form end up routing their KeyUp events to the active control beneath the messagebox. For example, if I have a TextBox control focused on a form, and I open a message box, pressing "enter" to close the message box causes the TextBox control to receive a KeyUp event for the enter that was pressed in the dialog! It's almost as though the message is getting routed to the incorrect location. To reproduce this problem, create a new Windows Application (C#) project in Visual Studio 2003 (.NET 1.1. The issue occurs in the service pack edition as well). Drop a TextBox control onto the form's canvas from the toolbox. The bug occurs in any control that can receive focus, but in this case I will use a TextBox. Add a MouseUp event handler to the textbox with the following code: private void textBox1_MouseUp(object sender, System.Windows.Forms.MouseEventArgs e) { MessageBox.Show("The textbox was clicked. Pressing 'enter' on this dialog will cause the keyboard event to be incorrectly routed to the text box."); } Then add a KeyUp event handler to the textbox with the following code: private void textBox1_KeyUp(object sender, System.Windows.Forms.KeyEventArgs e) { if (e.KeyCode == Keys.Enter) { MessageBox.Show("An Enter KeyUp event was received by the text box. If you pressed enter to close the dialog, this message was incorrectly received! Pressing enter again on this messagebox will cause an endless loop!"); } } Save the project and then run the application. Click on the textbox to cause the messagebox to appear, then press the enter key while the messagebox is focused. The KeyUp event was routed to the wrong location, possibly causing undesired behavior! I noticed this bug with we were writing "ESC" key handling code in our application to close documents. A messagebox would appear, and if the user pressed "ESC" to close the messagebox, the ESC key event would get routed to the document, which would cause it to close - definately not correct behavior! :( I don't have the KeyPreview property enabled on the form. Is there any work around for this? KeyPress and KeyDown don't get executed however. I suppose I could move the code into the KeyDown event. Tag: Tree control allowing multiple parents for a node (Graph) Tag: 77785
  - 11
    - SelectedIndexChanged event in comboA causes same event to fire in comboB I have a vb.net 1.1 winforms app and have several combo boxes on a form 2 combos have the same data and are populated from the same data table using the bind method. One is the ShipToAddress and the other is the BillToAddress. when the user selects an address in the shipto combo, after its SelectedIndexChanged event fires, the SelectedIndexChanged event fires in the BillTo combo which, of course, is causing big problems. Why is this? is it because they are bound to the same data table? Is it a bug in vs 1.1? Can anyone recommend a fix or work around for this? Thanks. -- moondaddy@nospam.com Tag: Tree control allowing multiple parents for a node (Graph) Tag: 77784
  - 12
    - capturing windows forms appearence? the print screen button in the keyboard can save what shows in desktop into clipboard (the alt + prtsc does the same thing for the topmost window) i want to see if windows forms' control can save its appearence into a bmp file. i guess in OnPaint method we can do something? Tag: Tree control allowing multiple parents for a node (Graph) Tag: 77783
  - 13
    - Form with background transparency issues Recently I wanted to create a small little program that could sit= on the desktop and not block the desktop wallpaper=2E There are= two methods to accomplish that ( that I am aware of )=2E 1) create a bmp as a background image and set the transparency= key to match its color 2) specify the form's background color with a matching= transparency key Now my issues with both methods, but first it should be known= that I have set the forms to have no border or title bar and= have implemented code that allows me to click-and-hold anywhere= on the form and move it=2E The data actually displayed on the= form is just text and one rectangle, all drawn by me ( there are= no controls on the form itself )=2E 1) I have two issues with this method, although it is what I'm= prefering to use at the moment=2E The first seems to be the= discrepancy between how the program is handled when the= computer's Color Depth is 32bit or when it is less than 32bit (= 16bit )=2E When the color depth is 32bit then I am able to click= on the entire area the form inhabits ( even that which is= transparent ) and move it, but if the color depth is less than= 32bit ( 16bit ) then only the drawn text or rectangle outline (= since it has no fill ) can be clicked to drag the program= around=2E Clicking on the transparent areas just passes the click= through the form to whatever is below ( even when I know the= form has focus )=2E I'd like to be able, regardless of the= desktop's color depth, to click anywhere within the form area= and move the application=2E The second issue I have with this method occurs when I take my= executable and put it on another PC ( my PC is XP Pro, the other= PC is XP Home=2E=2E Both SP2 )=2E The problem is similar, but a= little different=2E When the 2nd PC's color depth is at 32bit,= the transparency does not work=2E The green/lime ( that's the= transparent color I'm using ) background shows=2E Needless to say= this is not acceptable=2E When I change the color depth to less= than 32bit ( 24bit this time ), the transparency actually works,= but I come across the same issue of clicks on the transparent= areas just passing through=2E 2) With this method I have not tried it on a 2nd PC yet ( I don't= have it available where I am atm )=2E Its basically the same= "issue" as mentioned above with color depth less than 32bit,= except it does it with a color depth of 32bit and 16bit=2E Clicks= on the transparent areas just pass right through=2E I'm tempted= to just go with this method and possibly make one area on the= form that is meant to be used to drag it around ( similar to the= idea of the box that appears to move tables in MS Word ), but= I'm hoping there's a solution I'm unaware of before I do that=2E Anyways, all of this brings up some interesting questions=2E -What does color depth have to do with transparency handling? -Does the version of XP ( Home or Pro ) handle transparency= differently? Probably some more questions also=2E Not sure if it matters, but I'm doing all of this in C#=2E Any help or suggestions offered will be greatly appreciated=2E -------------------------------- From: othell m=2E ----------------------- Posted by a user from =2ENET 247 (http://www=2Edotnet247=2Ecom/) <Id>n5f4+mRIPU647s2eV3QftA=3D=3D</Id> Tag: Tree control allowing multiple parents for a node (Graph) Tag: 77780
  - 14
    - No Touch Deploy not working on Windows 98 Our No Touch Deploy application has worked on all OS's thus fire (post Windows 98). We just installed our stub exe (the one that pulls the assemblies from a web server) on a Windows 98 machine. I ran the stub (all it does is an assembly.loadfrom pointing to a url) and got all kinds of strange thread exceptions. I looked in the assembly|download folder and it's empty. Anybody had any experiences with NTD and windows 98? Greg Robinson Custom Data Systems, Inc. www.cds-am.net Tag: Tree control allowing multiple parents for a node (Graph) Tag: 77779
  - 15
    - ComboBox Row Source = Result of DB Query? I have an access database and I want to populate a combo box with the contents of a Table in my access database. What is the best way to do it? I was trying to do it at design time, but not sure if it can be done. Tag: Tree control allowing multiple parents for a node (Graph) Tag: 77778
  - 16
    - processing of windows messages during long operation? Hi, My code has a long operation to do, and I want to let other windows messages be processed whilst I do that operation. Casting my mind back 10 years, I can't remember the call to do this. Can some one tell me the answer? Thanks Martin Tag: Tree control allowing multiple parents for a node (Graph) Tag: 77775
  - 17
    - Testing Internet connection? In a Library or Win Forms application how can my code test whether the computer is connected to the Internet? (The computer could use a dial-up connection or it could be on a network.) TIA Tag: Tree control allowing multiple parents for a node (Graph) Tag: 77773
  - 18
    - Pass DataSet to Modal Form I have built a main form that creates and fills a dataset. I want to open a modal form and pass it one of the tables in the dataset but I don't know how to code it in VB. Does anyone have an example or point me in the right direction to find some code? thanks Tag: Tree control allowing multiple parents for a node (Graph) Tag: 77772
  - 19
    - Source for multi-track editor? Hi, I need to build a testing scenario generator that will create binary messages for an application we have built. The UI would look like a movie editor in that it would have parallel timelines for the actions of several people and several machines. The user would be able to lay down action icons on the timelines to show what was going on at any given time and specify the some properties of the action. At some point the user could click <Make Scenario> and all the corresponding input for testing would be generated. What I'm wondering is anyone knows of some source code in C# for a similar kind of editor that might serve as a starting point. Even a custom timeline control that could be replicated would be a good help. Thanks! Tag: Tree control allowing multiple parents for a node (Graph) Tag: 77766
  - 20
    - Disable Task Manager I'm trying to figure out how to PROGRAMMATICALLY disable the Task Manager while logged in as a "non-administrator" user (only belongs to the "Users" group). I know I can programmatically disable the Task Manager by having my app write a 1 to the registry key HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\System. Unfortunatley this only works, though, if the user who is running the app is logged in as an Administrator. When I try to run the app as a just a regular "non-administrator" User I am not able to write to the registry! So... Is it possible to do this? If so how? Tag: Tree control allowing multiple parents for a node (Graph) Tag: 77765
  - 21
    - Detecting idle time from a .Net application I'm having a lot of trouble finding a universal and stable solution to the problem of detecting a session's idle time. I have a .Net application that runs in the system tray, much like many of the messenger services out there. From what I've read in the newsgroups, there are several mechanisms that I can try, but the biggest problem is that I have to get it working on Win98, WinME, Win2K and WinXP. The options I've found are: 1) On a timer, use GetLastInputInfo to check the last input event No good. This requires Win2K and up - I need to run on 98 and ME 2) Add a low-level mouse and keyboard hook in my .Net application using SetWindowsHookEx specifying the hooks WH_MOUSE_LL and WH_KEYBOARD_LL Again, works great in XP, but WH_MOUSE_LL and WH_KEYBOARD_LL are incompatible with 98 andME 3) Add a global mouse and keyboard hook in an external DLL using SetWindowHookEx and WH_MOUSE and WH_KEYBOARD This work fine accross all platforms, but for some reason whenever the screensaver kicks in, my hook stops receiving events. So my question is, is there another solution I should try, or is there something I should be aware of that could get any of the above solutions to work? Tag: Tree control allowing multiple parents for a node (Graph) Tag: 77764
  - 22
    - delete selected rows from a datagrid I have a datagrid whose datasource is a datatable. I want the user to select (multiple) rows in the datagrid, press a button and have the selected rows deleted. Iterating through the rows in the datagrid and testing to see if each is selected and then deleting the associated datarow from the datatable is probably inefficient but nevertheless doesn't work because the selected rows in the datagrid are reset as soon as the first record is deleted from the datatable. Is there an obviously correct method for doing this? Tag: Tree control allowing multiple parents for a node (Graph) Tag: 77763
  - 23
    - Newbie: Dataset - ComboBox synchronization Hello, I have two questions involving Datasets and populating ComboBoxes and other controls with them. 1) Two cmbboxes are populated by two different fields of the same table and, of course, synchronized. However the second field is not required in the DB and missing contents sometimes. Ex: Field1 Field2 john 1990 mary paul anna mario 1967 james .....,etc. So when the user scrols through cmbField1 there is no problem, however if you want to scroll through the year there are big gaps that you go through because there is no contents there. Is there a way to get around that and STILL keep the cmb Boxes synchronized? 2) Now, after having the above from the same table and trying to get *Related* info from another table in my DB (of course still synchronized with the other two controls) I added a second table to the dataset with the INNER JOIN info. I access the new field by : Table1.field3. But field3 belongs to Table2 !!! not Table1! Is this normal? People say it's not a good idea to add more than one table in the same dataset. If this is true how can I get Relational information that is still synchronized? (i.e. fields 1 and 2 from Table1 and field 3 from Table 2) The fact that I get what I want is not enough. I need to know if it's the right way for my case and if there is s better way. Any help/feedback would be Greately appreciated. _steve_ Tag: Tree control allowing multiple parents for a node (Graph) Tag: 77762
  - 24
    - Combo Box Display Member is reset Context: setting a collection of business objects as the DataSourceof a ComboBox. The collection itself extends CollectionBase, and has public properties exposing the desired display and value members. In this particular case, the display and value member is "Value". Prior to setting the combo box datasource, the display member and value member properties are set, then the datasource itself is set. So, before setting the DataSource, the DisplayMember = "Value", but after setting the DataSource, the DisplayMember reverts to "". To put a twist on the issue, the second time that the DataSource is set, everything works as it should... Thanks for any and all input. -- Sancerre Tag: Tree control allowing multiple parents for a node (Graph) Tag: 77758
  - 25
    - User Control Hi All, Can I use user controls at windows forms??? if yes... Where I must search about it??? Tag: Tree control allowing multiple parents for a node (Graph) Tag: 77756
- Next
  - 1
    - user control ?!?!!?! basic questions ... Hi All, Can be user controls used in winforms ? if yes... Anibody knows how can I find any article about user controls to winforms... Tag: Tree control allowing multiple parents for a node (Graph) Tag: 77755
  - 2
    - How to: Programactically set the computers clock to the official time? My computer seems to loose seconds from day to day so I would like to have my app download the official time and set my computer's clock. What's the best way to do this? Is there an official time website that offers a library for getting the time? Any thoughts? Steve Tag: Tree control allowing multiple parents for a node (Graph) Tag: 77754
  - 3
    - how to run Excel menu options when shown inside a webBrowser control ????? hi all !!! I have a WinForms app that has a Internet Explorer component where I show information by using the "navigate" method. when I show an XLS file the Excel is embedded and the spreadsheet is correctly shown; the Excel menues are not displayed (that's fine). what I would like to do is to add a button in my WinForms application to pop up Excel's "Save as" dialog. is there any way to do it ? (remember that the XLS file is shown inside the webbrowser component) any hint will be greatly appreciated. thanks in advance, ant Tag: Tree control allowing multiple parents for a node (Graph) Tag: 77752
  - 4
    - MSComm doesn't fire OnComm event in a User Control Iâ??m developing a user control (in C#) that encapsulates the MSComm control. MSComm control is available as a COM component. So, Visual Studio.Net automatically prepares an Interop wrapper for this component. I want to use my user control in a C# windows application. Iâ??m able to send the data through this user control. But the problem is that my user control doesnâ??t catch the OnComm event. Iâ??m sure that there is no problem with the settings of MSComm control. This is because when I put an MSComm control in a separate windows application and then tried to catch the OnComm event, it worked fine and I got all the data from the Input property within the event handler. To Summarize: MSComm control doesnâ??t fire OnComm event in a User Control application. MSComm control does fire OnComm event in a Windows application. Problem: I want to catch OnComm event in my User Control Application. Tag: Tree control allowing multiple parents for a node (Graph) Tag: 77750
  - 5
    - Terminal Service: conocer la IP del cliente remoto? Utilizando .Net, como puedo obtener la dirección ip o el nombre del cliente remoto que está conectado por Terminal Service a un Servidor de Terminal ? En el Terminal Servide Manager me muestra el nombre del cliente remoto, o sea del equipo remoto, pero no se como obtenerlo utilizando C# .Net. gracias. Tag: Tree control allowing multiple parents for a node (Graph) Tag: 77746
  - 6
    - How to add ListBox as Row of DataGrid Hi Guys, How to add ListBox as a row (Sub row) of DataGrid... Please help me Tushar P. --- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.766 / Virus Database: 513 - Release Date: 17-Sep-04 Tag: Tree control allowing multiple parents for a node (Graph) Tag: 77744
  - 7
    - Problem with Creating User Profiles on Windows XP Hi all, Please ignore the other post.. The cat jumped on the machine and sent it before I could stop it!! Was wondering if anybody has expericence this problem.. I am writting an application in C# using windows forms, to create windows user profiles and then updating the registry information for the new profiles. I have managed to create the user successfully and thought that I was writting the registry information correctly. That was until I checked the 'C:\Documents and Settings' Directory, when I noticed that the new users directories did not reflect their names. But instead comprised of non printable characters!!! Here is the code sample in C# ////////////////////////////////////////// DirectoryEntry NewUser; DirectoryEntry AD = new DirectoryEntry("WinNT://" + Environment.MachineName + ",computer"); // delete user when existing try { // this throws when no such user NewUser = AD.Children.Find(strNodeName, "User"); MessageBox.Show("User already exists!!"); return; }// Catch not found exception catch(COMException cex) { Console.WriteLine(cex.Message); } // Add user using the user schema NewUser = AD.Children.Add(strNodeName, "user"); NewUser.Properties["description"].Add(this.txtFirstName.Text + " " + this.txtSurname.Text); // NewUser.Properties["PasswordExpired"].Add(1); // user must change password at next login // Set user flags sample here sets Account disabled, pwd can't change // this flag is different for LDAP accounts NewUser.Properties["userFlags"].Add( UF_NORMAL_ACCOUNT | UF_DONT_EXPIRE_PASSWD ); // invoke native method 'SetPassword' before commiting // for AD domain accounts this must be done after commiting NewUser.Invoke("SetPassword", new Object[] { this.txtPassword.Text }); NewUser.CommitChanges(); // Add user to guests alias DirectoryEntry grp = AD.Children.Find("Guests", "group"); if(grp.Name != null) { grp.Invoke("Add", new Object[] {NewUser.Path.ToString()}); } MessageBox.Show("Account Created Successfully"); AD.Close(); ////////////////////////////////////////// Then I proceed to update the users Registry information!! At this point their is no Directory for the user in "C:\Documents and Settings\" directory ////////////////////////////////////////////////// NativeMethods._PROFILEINFO profile; IntPtr hToken = IntPtr.Zero; hToken = NativeMethods.CreateLogonToken(UserAccount, UserDomain, UserPassword); if(hToken != IntPtr.Zero) { profile = new NativeMethods._PROFILEINFO(); profile.dwSize = Marshal.SizeOf(profile); profile.lpUserName = UserAccount; // Directory Still Not Created at this Point!! int ret = Win32.LoadUserProfile(hToken, ref profile); // This function Invokes if(ret != 0) { // Use WMI to get the SID of the user (this requires W2K3 or XP) using (ManagementObject account = new ManagementObject("Win32_UserAccount.Domain='" + UserDomain +"',Name='" + UserAccount + "'")) { account.Get(); // Get key wich is the root for the users hive loaded in HKU UserSID = account["SID"].ToString(); if(UserSID.Length != 0) { // Now update the registry information for this user!! UpdateRegistryInformation(); } } ret = NativeMethods.UnloadUserProfile(hToken, profile.hProfile); } } [DllImport("advapi32", CharSet=CharSet.Auto, SetLastError=true)] static extern int LogonUser(string lpszUserName, string lpszDomain, string lpszPassword, int dwLogonType, int dwLogonProvider, ref HANDLE hToken); [DllImport("userenv", CharSet=CharSet.Auto)] internal static extern int LoadUserProfile(HANDLE hToken,ref _PROFILEINFO lpProfileInfo); public static HANDLE CreateLogonToken(string name, string domain, string passwd) { HANDLE ret = IntPtr.Zero; HANDLE tok = IntPtr.Zero; System.Management.ManagementObject mo = new System.Management.ManagementObject(new ManagementPath()); mo.Scope.Options.EnablePrivileges = true; int result = LogonUser(name, ".", passwd, LOGON32_LOGON_INTERACTIVE, LOGON32_PROVIDER_DEFAULT, ref tok); if (result != 0) // If success { ret = tok; } else { string temp = "LogonUser Error: "; temp += Marshal.GetLastWin32Error().ToString(); MessageBox.Show( temp ); } return ret; } /////////////////////////////// So I stopped writting to the registry information and then physically logged in as the user via the windows login screen. This then created the directory correctly!! Any ideas? Thanks Wayne Tag: Tree control allowing multiple parents for a node (Graph) Tag: 77743
  - 8
    - how to prevent duplicated in combobox.... How do i prevent duplicated in combobox ? Private Sub ComboBox1_KeyPress(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyPressEventArgs) Handles ComboBox1.KeyPress If Asc(e.KeyChar) = Keys.Enter Then AxWebBrowser1.Navigate(ComboBox1.Text) Dim bFound As Boolean bFound = False For i As Integer = 0 To ComboBox1.Items.Count - 1 If ComboBox1.SelectedItem = ComboBox1.Text Then bFound = True Exit For End If Next If bFound = False Then ComboBox1.Items.Add(ComboBox1.Text.ToString) End If End If End Sub Tag: Tree control allowing multiple parents for a node (Graph) Tag: 77738
  - 9
    - CollectionEditor Hello everybody. How can I call CollectionEditor from the code, not by click on visual buttons in PropertyGrid? I suppose I have to inherit UITypeEditor, set my custom CollectionEditor as default CollectionEditor for my Collection, override EditValue method and call EditValue? Can anybody send example? Max Tag: Tree control allowing multiple parents for a node (Graph) Tag: 77737
  - 10
    - How to display the Progress (%) in the middle of a Progress Bar... Hi Everyone Can anyone tell me how can I display the progress in percentage in the middle of the progress bar with "invert color" using VB.NET, this is very common and available with most of the applications, like at the begining the text "0%" is shown in black text and the background color of the progress bar is white and at the end, when the progress bar is filled with blue color then the "100%" text is in white color when the progress is in the middle that is "50%" then "5" appears in white color and "0%" appears in black color I want to have this type of effects Thanks Tag: Tree control allowing multiple parents for a node (Graph) Tag: 77734
  - 11
    - Flexible layouts with WinForms I´d like to know if there is something like GridBagPanel under Java in WinForms. I have to organize controls in my dialogs flexible. The Dock/Anchor-Stuff is not enough for me. Can you help me? Thorsten Tag: Tree control allowing multiple parents for a node (Graph) Tag: 77733
  - 12
    - Desktop client and web services - Object reference not set to an instance of an object Hello, I have a desktop client application which calls web services. The application works perfectly. But if I leave application intact about 30 minutes, and after a call a web method an exception is thrown which said: "Object reference not set to an instance of an object". Does anyone get this error? Thanks, Ruslan Tag: Tree control allowing multiple parents for a node (Graph) Tag: 77731
  - 13
    - endcurrentedit / haschanges / always true I have found that the haschanges method always returns true after endcurrentedit, even if the user did not make any changes to any of the controls. //called regardless if a current edit is occuring or not! bindingcontext[dataset,tablename].endcurrentedit if (dataset.haschanges()) dataadapter.update(dataset.getchanges()) I figured one of my controls was changing something, so I compared the original column, to the current column (after the endcurrentedit is called) - and all columns match exactly. Does endcurrentedit always create a changed rowstate, regardless if any of the bound controls were changed or not? Thanks in advance for your time. Richard Tag: Tree control allowing multiple parents for a node (Graph) Tag: 77727
  - 14
    - Looking for FREE components I am looking for free instrumentation type components for C# .NET. gauges, dials, meters, LEDs, etc. Thanks Tag: Tree control allowing multiple parents for a node (Graph) Tag: 77726
  - 15
    - Get current page index in tab control I'm writing a winforms app in vb.net 1.1 and have a tab control on one of the forms. each time a different page is selected in the tab control I need to run code in the form for that particular page. how can I determine which tab or page was selected. I tried using the TabIndexChanged event, but it doesn't fire when I click on a different tab. any ideas? Thanks -- moondaddy@nospam.com Tag: Tree control allowing multiple parents for a node (Graph) Tag: 77725
  - 16
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  - 17
    - Implenting Keyboard support in windows forms (Type your message here) I need to implement functionality to support function= keys(F1=2E=2EF12) and shortcut keys(example Ctrl R) in windows= forms=2EUser will use just the key board to access and navigate= the forms, User will not use mouse=2EIf any one has any= suggestions can you please let me know=2E Note:I tried KeyPressed events=2E it seems i can't capture the= function keys or the modifier keys with this event=2E Note: i tried to use ProcessCmdKey=2E I am not able to capture the= combination key strokes like "Ctrl F") Thanks -------------------------------- From: Tech Student ----------------------- Posted by a user from =2ENET 247 (http://www=2Edotnet247=2Ecom/) <Id>6xNnxnozP0usVg/wS3rmRQ=3D=3D</Id> Tag: Tree control allowing multiple parents for a node (Graph) Tag: 77717
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    - Stack Trace Fails To Report Line Of Exception? Greetings, I have been capturing and logging exceptions in an application I developed. I've noticed for some time now that certain exceptions track back to the Application.Run method and provide no other line number useful for identifying the actual line throwing the exception. For example: at System.Windows.Forms.SafeNativeMethods.ShowWindow(HandleRef hWnd, Int32 nCmdShow) at System.Windows.Forms.Control.SetVisibleCore(Boolean value) at System.Windows.Forms.Form.SetVisibleCore(Boolean value) at System.Windows.Forms.Form.ShowDialog(IWin32Window owner) at System.Windows.Forms.Form.ShowDialog() at System.Windows.Forms.ThreadContext.OnThreadException(Exception t) at System.Windows.Forms.Control.WndProcException(Exception e) at System.Windows.Forms.ControlNativeWindow.OnThreadException(Exception e) at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam) at System.Windows.Forms.UnsafeNativeMethods.DispatchMessageA(MSG& msg) at System.Windows.Forms.ComponentManager.System.Windows.Forms.UnsafeNativeMethods+IMsoComponentManager.FPushMessageLoop(Int32 dwComponentID, Int32 reason, Int32 pvLoopData) at System.Windows.Forms.ThreadContext.RunMessageLoopInner(Int32 reason, ApplicationContext context) at System.Windows.Forms.ThreadContext.RunMessageLoop(Int32 reason, ApplicationContext context) at System.Windows.Forms.Application.Run(Form mainForm) at Clarity.Cashflow.Interface.TransactionForm.Main(String[] args) in c:\documents and settings\mlanza\my documents\visual studio projects\clarity.cashflow.satellite\interface\transactionform.cs:line 369 Line 369 appears below: TransactionForm frm; try { frm = new TransactionForm(); Application.Run(frm); //line 369 } catch(System.Exception ex) { Core.ErrorLog.AddEntry(ex); } As you might guess, this is not very useful. Of course, I know the exception was thrown somewhere within the context of my whole application, just not the actual line number. Yes, there are a number of clues provided in the stack trace, but nothing half as useful as an actual line number. My guess is that for this to happen, the actual line number must not be wrapped in a try-catch block. Now, for the most part, I have try-catch blocks everywhere throughout my application. Upon recent review I discovered I was doing something unusual -- I have try-catch blocks wrapping calls to events that are handled in turn by the even subscriber. When I wrote this logic it was my understanding that such a try-catch block would still do the trick. For example: try { RequestInputEventArgs ri = this.OnRequestInput("Enter Transaction Remarks", prompt, cdt, false, String.Empty); } catch(System.Exception ex) { Core.ErrorLog.AddEntry(ex); } The subscriber method: private void TransactionManager_RequestInput(object sender, RequestInputEventArgs e) { InputBox input = new InputBox(e.Caption, e.Prompt, e.DefaultText, e.ValidDataType, e.AllowEmptyString); input.ShowDialog(this); e.Cancel = input.Cancel; if (!e.Cancel) e.InputText = input.InputText; } As you can see, there in no error handler in the subscriber. I am assuming the error handler in the class raising the event is still in effect for catching errors, even those thrown in the subscriber. Is this true? If so, does anyone have an other ideas why my stack traces aren't pinpointing the actual line numbers? Mario T. Lanza Clarity Information Architecture, Inc. 2004.09 Tag: Tree control allowing multiple parents for a node (Graph) Tag: 77715
  - 19
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  - 20
    - newbie question: how to set a launched process (by Process.Start methods) as Modal I am using C#.NET WinForm. The scenario I have is: a WinForm child form launches a process using Process.Start(app_name). Other than checking the HasExited property and waiting, is there a way to forced a launched process (a third party application) as Modal (i.e. user has to respond to that process before get back to the WinForm application)? Thanks in advance for the help. MichaelJ Tag: Tree control allowing multiple parents for a node (Graph) Tag: 77711
  - 21
    - Object's Form Text or Name? Hi All, I am trying to figure out how to get an object's Form Name or Text value. If I have a ListView object called LV1, I want it's Parent Name/Text. Using the Parent Object will not do because the ListView may be contained within other objects such as Panels, Groups, or Tab Objects. Any ideas would be appreciated, John. Tag: Tree control allowing multiple parents for a node (Graph) Tag: 77705
  - 22
    - cancelling an asynchronous web method call This is a multi-part message in MIME format. ------=_NextPart_000_0008_01C4A18E.941DB7A0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Hi,=20 I have a windows forms app, and a web service that can take a long time = to complete, so i use it asynchronously with the proxy generated = Begin/End methods. =20 However, i want the user to be able to cancel the operation. i = understand that the request has already been sent off, and the next = thing we'll hear back is when the result is received, so an actualy = cancel will be difficult to achieve. I have tried calling = webService.Abort() but this throws a ThreadException. I have worked out = the following crude work-around, which is simply to ignore the result = when it comes in, by means of a simple bool variable which gets set to = 'true' (meaning ignore) when btnCancel is clicked. =20 I would be interested to hear if anyone else has a better solution. my = code fragment is below.=20 many thanks tim mackey.=20 private bool ignoreResult =3D false; private ws.Service1 webService; ... private void btnStart_Click(object sender, System.EventArgs e) { AsyncCallback callBack =3D new AsyncCallback(Callback); IAsyncResult result =3D webService.BeginHelloWorld(5, callBack, null); }=20 public void Callback(IAsyncResult asyncResult) { if(ignoreResult)=20 return;=20 this.label1.Text =3D webService.EndHelloWorld(asyncResult); } private void btnCancel_Click(object sender, System.EventArgs e) { ignoreResult =3D true; this.label1.Text =3D "Cancelled } \\ email: tim at mackey dot ie // \\ blog: http://tim.mackey.ie // 67d0ebfec70e8db3 ------=_NextPart_000_0008_01C4A18E.941DB7A0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <HTML><HEAD> <META http-equiv=3DContent-Type content=3D"text/html; = charset=3Diso-8859-1"> <META content=3D"MSHTML 6.00.2900.2180" name=3DGENERATOR> <STYLE></STYLE> </HEAD> <BODY bgColor=3D#ffffff> <DIV><FONT face=3DArial size=3D2><FONT color=3D#000000>Hi, </FONT> <DIV><FONT color=3D#000000>I have a windows forms app, and a web service = that can=20 take a long time to complete, so i use it asynchronously with the proxy=20 generated Begin/End methods.  </FONT></DIV> <DIV><FONT color=3D#000000>However, i want the user to be able to cancel = the=20 operation.  i understand that the request has already been = sent off,=20 and the next thing we'll hear back is when the result is received, so an = actualy=20 cancel will be difficult to achieve.   I have tried calling=20 webService.Abort() but this throws a ThreadException.  I have = worked out=20 the following crude work-around, which is simply to ignore the result = when it=20 comes in, by means of a simple bool variable which gets set to 'true' = (meaning=20 ignore) when btnCancel is clicked.  </FONT></DIV> <DIV><FONT color=3D#000000>I would be interested to hear if anyone else = has a=20 better solution.  my code fragment is </FONT><FONT = color=3D#000000>below.=20 </FONT></DIV> <DIV><FONT color=3D#000000>many thanks</FONT></DIV> <DIV><FONT color=3D#000000>tim mackey. </FONT></DIV> <DIV><FONT color=3D#000000></FONT> </DIV> <DIV><FONT color=3D#000000>private bool ignoreResult =3D = false;</FONT></DIV> <DIV><FONT color=3D#000000>private ws.Service1 webService;</FONT></DIV> <DIV><FONT color=3D#000000>...</FONT></DIV> <DIV><FONT color=3D#000000>private</FONT><FONT size=3D2> </FONT><FONT=20 size=3D2>void</FONT><FONT size=3D2> btnStart_Click(</FONT><FONT=20 size=3D2>object</FONT><FONT size=3D2> sender, System.EventArgs e)</DIV> <DIV>{</DIV> <DIV>  AsyncCallback callBack =3D </FONT><FONT color=3D#0000ff=20 size=3D2>new</FONT><FONT size=3D2> AsyncCallback(Callback);</DIV> <DIV>  IAsyncResult result =3D webService.BeginHelloWorld(5, = callBack,=20 </FONT><FONT color=3D#0000ff size=3D2>null</FONT><FONT size=3D2>);</DIV> <DIV>} </DIV> <DIV></FONT><FONT color=3D#0000ff size=3D2>public</FONT><FONT size=3D2> = </FONT><FONT=20 color=3D#0000ff size=3D2>void</FONT><FONT size=3D2> = Callback(IAsyncResult=20 asyncResult)</DIV> <DIV>{</DIV> <DIV></FONT><FONT color=3D#0000ff size=3D2>  if</FONT><FONT=20 size=3D2>(ignoreResult) </DIV> <DIV></FONT><FONT color=3D#0000ff size=3D2>    = return</FONT><FONT=20 size=3D2>; </DIV> <DIV></FONT><FONT color=3D#0000ff size=3D2>  this</FONT><FONT=20 size=3D2>.label1.Text =3D webService.EndHelloWorld(asyncResult);</DIV> <DIV>}</DIV> <DIV></FONT><FONT color=3D#0000ff size=3D2>private</FONT><FONT size=3D2> = </FONT><FONT=20 color=3D#0000ff size=3D2>void</FONT><FONT size=3D2> = btnCancel_Click(</FONT><FONT=20 color=3D#0000ff size=3D2>object</FONT><FONT size=3D2> sender, = System.EventArgs=20 e)</DIV> <DIV>{</DIV> <DIV>  ignoreResult =3D </FONT><FONT color=3D#0000ff = size=3D2>true</FONT><FONT=20 size=3D2>;</DIV> <DIV></FONT><FONT color=3D#0000ff size=3D2>  this</FONT><FONT=20 size=3D2>.label1.Text =3D "Cancelled</DIV> <DIV>}</DIV> <DIV> </DIV> <DIV> </DIV> <DIV> </DIV></FONT> <DIV><FONT style=3D"FONT-SIZE: 10pt; FONT-FAMILY: verdana">\\ email: tim = at mackey=20 dot ie //<BR>\\ blog: <A = href=3D"http://tim.mackey.ie">http://tim.mackey.ie</A>=20 //<BR></FONT><FONT style=3D"PADDING-LEFT: 100px; FONT-SIZE: = 5px">67d0ebfec70e8db3=20 </FONT></DIV></FONT></DIV></BODY></HTML> ------=_NextPart_000_0008_01C4A18E.941DB7A0-- Tag: Tree control allowing multiple parents for a node (Graph) Tag: 77701
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    - Opening new WebForm Hello, I have a web-application. After pressing the button special form should be opened in a new browser window. How can I achieve that? Please, give a simple example. Thank you VS.NET C# Tag: Tree control allowing multiple parents for a node (Graph) Tag: 77697
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Hi,

Does anyone know of a control that can display (and ideally allow
users to manipulate) a graph structure (similar to a tree structure,
but where a node can have more than one parent)?

This would be most useful!
Thanks,
Mark.

Top

Re: Tree control allowing multiple parents for a node (Graph) by Sahil

Sahil
Mon Sep 27 14:08:51 CDT 2004

>>where a node can have more than one parent>>

<--- how would you even display that? Will the node appear twice under each
parent?

- Sahil Malik
You can reach me thru my blog at
http://www.dotnetjunkies.com/weblog/sahilmalik

"Mark Roberts" <markalroberts@hotmail.com> wrote in message
news:3ca15ed0.0409270151.aa627bd@posting.google.com...
> Hi,
>
> Does anyone know of a control that can display (and ideally allow
> users to manipulate) a graph structure (similar to a tree structure,
> but where a node can have more than one parent)?
>
> This would be most useful!
> Thanks,
> Mark.

Top

Re: Tree control allowing multiple parents for a node (Graph) by Mark

Mark
Tue Sep 28 04:03:52 CDT 2004

That's what I was hoping a decent control could help me with ;)

Yeah, it could potentially copy the shared node sub-tree, or if it was
really clever, it could attempt to arrange the nodes so as to display the
links without replication.

My initial investigations seem to prove the theory that there are a lot of
controls out there, but very few that do exactly what you want... time to
write me own :) Then maybe I'll sell it and get famous.

Cheers for the reply anyhow,
Mark.

"Sahil Malik" <contactmethrumyblog@nospam.com> wrote in message
news:%23mQ%23iVMpEHA.3488@TK2MSFTNGP12.phx.gbl...
>>>where a node can have more than one parent>>
>
> <--- how would you even display that? Will the node appear twice under
> each
> parent?
>
> - Sahil Malik
> You can reach me thru my blog at
> http://www.dotnetjunkies.com/weblog/sahilmalik
>
>
> "Mark Roberts" <markalroberts@hotmail.com> wrote in message
> news:3ca15ed0.0409270151.aa627bd@posting.google.com...
>> Hi,
>>
>> Does anyone know of a control that can display (and ideally allow
>> users to manipulate) a graph structure (similar to a tree structure,
>> but where a node can have more than one parent)?
>>
>> This would be most useful!
>> Thanks,
>> Mark.
>
>

Top