Form Editing Events

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- Previous
  - 1
    - Detecting changes on a form Hi, I'm designing a form and I'd like to know when a control has been edited. I know how to get around this, by putting code behind every control to see if theres a change and then set a flag, but thats a waste of time and a lot of code to write. I can see someone having a much more elegant solution, I just can't work it out. I was thinking of having every control inherit some master control so I can have one peice of code that 'detects' when a change has been made to any field or check box, just not sure how to go about it. Anyone have a nice and simple solution? Thanks, Tag: Form Editing Events Tag: 110785
  - 2
    - Export from Datagridview I must be doing something seriously weird as I can't find anything on what I need to do. I have a form that imports an Excel file into a dgv (to preview the data) I then want to export this into an existing table in a sql server database. I can't find anything to do this direct from the dgv. Does anyone have any code or methods for doing this? Or am I going about this in completely the wrong way? Any help greatly appreciated Tag: Form Editing Events Tag: 110784
  - 3
    - MdiContainer Benched... for what? Hi there, While searching for answer to another question i stumbled onto a trail of forum type posts where people were discussing MdiContainer support being phased out. They never actually got around to saying what they replacement model would be and i couldn;t be bother signing up for yet another website just to get an for the question. So im asking it here. Is MdiContainer model now not recommended practise and if so what hsas replaced it? Thanks Richard Tag: Form Editing Events Tag: 110780
  - 4
    - Total Loss of control in VS.net 2005 code window I'm now consistently having a problem (shortly after SP1), that, heretofore, only happened once in a while. Now, I bring up the code window in VB.Net 2005 - and I loose total control - I type in a letter or two (most of the time, it's only one), and the intellisense seems to think that's all I need - the code window loses focus, sometimes thinking I'm finished, and adds parentheses at the end. Then, no matter what, I click in the code window, and I can't type in but 1 letter - then it does it again. When it first started happening, I could just shut down VS.Net - then re-open it, and it would be OK for a good while - - I'm loosing my mind with this - Does anyone have any ideas on what may be causing this? Tag: Form Editing Events Tag: 110775
  - 5
    - Help! How to embed a "windows explorer" into a form? Hi everyone, I'm working on a program contains two "Windows Explorer" in one form which allows people to copy files from one to another. I searched in CodeProject and Google but only got some messages about how to make a fake "Windows Explorer", not embedding one into a winform. I also found something about SHFolderView, but I don't know how to use it. Did anyone have experiences about this before? Any help is appreciated. Regards, Anderson Tag: Form Editing Events Tag: 110774
  - 6
    - Tabs similar to the ones in Excel Hi all, I am just wondering if anyone has tried to implement a tab control that allows the user to edit the tab title text at runtime. If so, how much work did it take? Also, please list some pointers on how this can be done. Thanks. GW Tag: Form Editing Events Tag: 110773
  - 7
    - "default" Desktop and Ctrl+Alt+Del Hello, I'm currently programming an application which is started replacing the userinit.exe. The code does the following. When the user logs on the application is creating a new desktop "newDesktop", then the original userinit is created at "newDesktop". So the shell uses "newDesktop" as its desktop, too. The same is with the other applications, that are started when the user logs on. After starting the original userinit the program creates another desktop "formDesktop" where the forms of my Desktop are displayed, while the system configuration of the logged on user is loaded in the background. In this form the user has to solve some tasks and when this is done correct the "formDesktop" closes and the "newDesktop" is set as visible Desktop and the program exits else the user will be logged off. For sure you ask why "newDesktop" for the shell process? The answer is that when the user logs on the visible desktop is "default". If I don't use "newDesktop" the user can manipulate the desktop before the form is displayed and this cannot be allowed. If the application sets the "default" desktop visible before exit the hotkeys and trayicons and so on are still registered to the "newDesktop" and not the "default" desktop, so "newDesktop" stays the user's desktop for the session. What is the problem I have? Well, the ctrl+alt+del event opens the taskmanager in the "default" desktop, thus it's invisible to the user, although the process exist. Making the long story short, here is the question: Is there a way to make the taskbar appear in the "newDesktop" when ctrl+alt+del is pressed? I hope I could make myself clear. kind regards, Alexander Tag: Form Editing Events Tag: 110772
  - 8
    - do win forms have skins like asp.net? Can anyone tell me do winforms have skins and themes like ASP.NET 2.0? If so, can you attach links to information on this subject? Thanks! Tag: Form Editing Events Tag: 110769
  - 9
    - datagridview I have a buttoncolumn in a dgv and the cellcontentclick event opens up a dialog. The end result: the 'OK' value will edit an editable cell in the dgv. The value will not allow me to enter into editmode but will let me edit the cell. any ideas??? --- code ---- private void dataGridView1_CellContentClick(object sender, DataGridViewCellEventArgs e) { if (dataGridView1.Columns[e.ColumnIndex].Name == "Btn") { DialogResult result = folderBrowserDialog1.ShowDialog(); if (result == DialogResult.OK) { try { dataGridView1.BeginEdit(true); //dataGridView1.Rows[e.RowIndex].Cells[5].Value = folderBrowserDialog1.SelectedPath; //dataGridView1.CancelEdit(); if (dataGridView1.IsCurrentCellInEditMode) { dataGridView1.Rows[e.RowIndex].Cells[5].Value = folderBrowserDialog1.SelectedPath; dataGridView1.CancelEdit(); } else { Console.WriteLine("Fail to enter editmode"); } } catch(Exception z) { Trace.WriteLine(z.Message); } } } } Tag: Form Editing Events Tag: 110765
  - 10
    - Send messages to other window Hello. I need send some commands to other window. I did this before with VC++. So it work like this. I found this window (for example cacl.exe have text â??Calculatorâ??) then get handle of this window and then send some windows messages on this handle. My old code looks like this HWND hwndFound = ::FindWindow(NULL, " Calculator"); // Ð¿Ð¾Ð¸Ñ?Ðº Ð¾ÐºÐ½Ð° ::PostMessage(hwndFound,WM_COMMAND,IDYES,0); How I can do something like this in C#? Tag: Form Editing Events Tag: 110764
  - 11
    - DataGridView: last column can be made smaller but not bigger Hi, I have a DataGridView control where the user can resize the columns. The control is embedded inside a Panel. When clicking on and dragging the column seperator to the right of the rightmost column, I can make the column smaller when I move it to the left. If I try to move it to the right however, my cursor is halted against the edge of the control. So the column can't be made bigger. This can be reproduced in the sample at http://msdn2.microsoft.com/en-us/library/1x64c23x.aspx by clicking Customer->View Orders in the main form and doing it on the table that appears. In that sample, it is possible to make the last column bigger again by making the whole window bigger, until its length is more than the total length of the columns, creating an open space between the columns and the edge of the window. Then the right seperator of the rightmost column can be dragged freely, up until the edge of the window. However, this trick isn't practical in my own control, since the control is too small and the total column length too long. Is there some standard way to make it behave like the list view in Explorer, where you can resize past the border of the window? Kind regards, Raf Tag: Form Editing Events Tag: 110762
  - 12
    - SnapToGrid and GridSize Hello in VS.NET 2003 using VB.NET there was a property for windows forms , SnaptoGrid , True/False and Grid Size where we can set them for individual forms , now those 2 settings are gone from VS.NET 2005 i can only set them from the Tools/Options/Windows forms designer , but that will affect all new forms , i want to manually control previously saved forms or set the properties for some forms only , can anyone please tell me where the 2 settings gone in VS.NET 2005 and why they are not showing in the form property page ? Best Regards Bassam Tag: Form Editing Events Tag: 110761
  - 13
    - What is a DataGridView template cell? In a number of the Microsoft example snippets for custom DataGridView cells, there are references to something called a 'template cell'. What is this? -- Richard Lewis Haggard www.Haggard-And-Associates.com Tag: Form Editing Events Tag: 110756
  - 14
    - Opening Mailclient with MAPI From my application, informations can be sendt by the user. Until now I'm using Process.Start("mailto:....) This works very fine, but I get problems, when the preset content is to much, because the length of the URL is restricted. IIRC this also can be solved by MAPI, but I can't find any example how to do this with C#. Is this really possible and can anyone give me a hint, how to do this? thanks Christof Tag: Form Editing Events Tag: 110754
  - 15
    - Re: How to avoid flicker when adding controls to a panel? You can minimize the flicker using interop to suspend the painting (which is different than suspending the Layout events). Here is a FAQ link on this. http://www.syncfusion.com/faq/windowsforms/Search/637.aspx ======================= Clay Burch Syncfusion, Inc. Tag: Form Editing Events Tag: 110753
  - 16
    - How to avoid flicker when adding controls to a panel? Hi, I've got a flickering-problem when I try to add controls to a panel (with flow layout) at runtime. My code executes the following steps: public void BuildView() { ... // suspend layout to not perform layout each time an item is added mFlowLayoutPanel.SuspendLayout(); // remove all elements from the panel: mFlowLayoutPanel.Controls.Clear(); // in a loop I add new items to the panel: foreach (... in ...) { Panel panel = new Panel(); // set size of the panel: panel.Size = MaxSize; // MaxSize is a constant value // then the color of the panel is set panel.BackColor = Color.CornflowerBlue; // after all the panel is added the the panel with the flow layout mFlowLayoutPanel.Controls.Add(panel); } mFlowLayoutPanel.ResumeLayout(true); } Every time the method BuildView() is called, the panels are flickering. What went wrong? I thought that SuspendLayout() and ResumeLayout() will avoid that? How can I avoid flickering every time my panels are added to the flow layout panel? Thanks a lot for your answer in advance. Best regards, Ralf Tag: Form Editing Events Tag: 110747
  - 17
    - Datagridview and the Enter Key Hi all, I have a datagrid that doesnt allow the user to edit. When the user clicks a row, the whole row gets selected. I'd like it so that when the user has a row selected and presses enter, a new form is opened and passed data from the row. At the moment, when I press enter, I can get the window to open, but the selected row moves down one. Is there any way I can surpress this behavior when pressing enter? Many thanks Simon Tag: Form Editing Events Tag: 110743
  - 18
    - Child form focus problem Hi all, An application I am woking on consist of a main form. On the main form there are several possible ways for the user to open a non-modal child forms to display even more information. The problem I am encountering is about loss of focus. Let's say here, that initialization of the child form takes about =BD second, from the point where the window is first shown to the point where all controls have been rendered and set with data. Now, on the main form there is a datagridview which is updated on intervals. The problem occurs the user clicks a button to open a child form. The child form is created. But before initialization of the child form has finished, the DataGridView on the main form is updated. Seemingly because of this, the main form gets focus and is moved to the front, and the child form is moved to the back. The user can manually put focus on the child form again and continue working, but tuhis is a behaviour that is very anoying to the end users. Have any of you encountered something like this before? The non-modal strategy is by design. The users want to be able to go back to the main form, without closing the child form. Therefore, I'm searching primarily for any help on the focus problem, and will only use a modal child form strategy if no resolution to the problem can be found. Thanks in advance, Christer Tag: Form Editing Events Tag: 110739
  - 19
    - Windows Form App and VPN I have some clients who have users who reside outside of the company's network. The company is going to allow remote access through a VPN on the server for access to the SQL Server database. I want to have my forms app which will run on the client machine to automatically open the VPN when the program starts and close it when the program ends. That way, the clients doesn't have to set anything up and they don't have to worry about how the data is accessed. Is it possible to this from a windows form app and if so what operating systems would the client have to be running in order to do this? Bill Tag: Form Editing Events Tag: 110729
  - 20
    - OnPaint automatically call e.Graphics.Clear()? Hello. I have a question about OnPaint override. For example, if i have the following code in my inherited form class, private Brush _brush = Brushes.Black; private RectangleF _rect = new RectangleF(0,0,100,100); private int counter =0; protected override void OnPaint(PaintEventArgs e){ if (counter==0){ counter++; e.Graphics.Clear(Color.White); e.Graphics.DrawString("Test", this.Font, _brush, _rect); } } I expect the OnPaint method will do nothing after the first call. That means, the string "Test" should stay on screen if the form is not resized/moved/covered by other windows. However, in reality, the OnPaint do the e.Graphics.Clear() automatically. I'd like to know if that is possible for me to stop that behavior. In my application, my form contains many individual text strings. The strings are updated periodically individually. I would like to render the updated strings only, not rendering the whole thing for every string update. Thank you very much for your help! Gilbert Tag: Form Editing Events Tag: 110726
  - 21
    - mouse move I want to detect and receive a event to my MDI window when the moves outside of the window.. I am unable to receive events. I know there is a case of sending a manual message (George Shepherd's Win FAQ) before opening Top Level windows or doing anything that take mouse focus away from the MDI window. Considering the scope of our application, this I feel might be an effort. Is this the only way? or any other way possible? VJ Tag: Form Editing Events Tag: 110725
  - 22
    - Filtering key strokes Hi, having a card reader attached to the PS/2 keyboard interface, I would like to filter the keyboard input, so that the input from the card reader does not reach the GUI controls. I tried setting KeyPreview=true on the form and catched all input with the KeyDown event. In order to detect, if the input comes from the card reader, I need to check a sequence of at least 10 keys. So I collect the keys in KeyDown and if it's a card reader sequence, I trigger a special action for it. If it's normal user input, I need to "forward" the collected key strokes to the form. The second part is the complicated one. Having a sequence of key strokes in an array of type System.Windows.Forms.Keys, how do I resend these to the application? Sendkeys only accepts a string and seems to not support all values of the System.Windows.Forms.Keys enum. Is there maybe a way to resend keystrokes using the integer values captured from the KeyValue member of the KeyEventArgs? bye, Marc T. Tag: Form Editing Events Tag: 110724
  - 23
    - ClickOnce & proxy authentification We have developed a VisualStudio 2005 smart-client application which we deploy using .NET framework 2.0 ClickOnce. We are experiencing difficulties deploying in certain corporate environments: clients that use proxy authentification simply cannot install unless they disable the proxy which is usually not an option. Apparently this is a known issue with ClickOnce and Microsoft has released a HotFix for it: http://support.microsoft.com/kb/917952/en-us Could we please receive a copy of this HotFix? This is a huge and recurring problem that makes us look bad. Tag: Form Editing Events Tag: 110720
  - 24
    - Outlook Express Newsgroups How do I download all messages in a newgroup? -- Nick Haury Tag: Form Editing Events Tag: 110717
  - 25
    - Forms and Labels I wonder if you could help. The event handler code below, will allow the user to change the phone number and write it on a label of a message box. I want to replace the message box with a dialog box. Can anybody help me replace the message box below to a dialog box. In other words. I want to write the new phone number on a label (named "labe1")of a dialog box (named "dialog2),instead of writing the new phone number on the label of a message box. private: System::Void dialogBtnItem_Click(System::Object * sender, System::EventArgs * e) { // Create the dialog MyDialog* box = new MyDialog(); //Fill in the initial data box->Phone = S"(650)123-3456)"; // <------ This is the phone number to be changed //Show dialog if (box->ShowDialog() == DialogResult::OK) { MessageBox::Show(box->Phone); //<-----I tried to change this line } } Tag: Form Editing Events Tag: 110713
- Next
  - 1
    - Catching Ctrl + Click on a checkbox Is it possible to identify when the Ctrl Key is down whilst clicking on a checkbox on a windows form? I have a checkbox on a User Control on a Tab on a windows form. Tag: Form Editing Events Tag: 110712
  - 2
    - What are my options in this Windows App? I am creating a Windows Forms app that will use SQL Server as the database. The app will be used in the following ways. 1. It will be used in the Clients office where the app will sit on the clients desktop pc and connect to the database on the server. 2. It needs to be used by those outside of the office network. ex. a remote office that is not a part of the network where the database is residing. 3. I might have users on the road that with wi-fi access need to connect to the office database. I don't want to create a browser based app using ASP.Net. I don't want to use Citrix. Here's what I think are my options. Am I missing any? which would you recommend? 1. Create a windows forms app that sits on the client and a web service that sits on the server that connects to the database. The user does something on the client and a call is made for data to the webservice which returns data to the client. 2. The app creates an opens up a port upon startup and accesses data directly and then closes the port upon exiting the app??????????????????? Any other suggestions or recommendations? Bill Tag: Form Editing Events Tag: 110709
  - 3
    - SelectedNode Hi everyone again, How to check SelectedNode's child? There is ->SelectedNode->Parent, but how to check/control a child? Thanks in advance, gmb Tag: Form Editing Events Tag: 110704
  - 4
    - Menu Control ( 2.0) Is there any way I can make the main menu bar for a MDI windows forms application, floating and hidden.. anybody know of the trick? Tag: Form Editing Events Tag: 110697
  - 5
    - Accessing a forms control menu I've got some base classes I'm creating with a specific set of functionality that needs to be present throughout our app. I'm not finding any way to programmatically get to the control menu in the upper left of each window. I've always been able to add to this in the past. How do I get access to this now? We're using VStudio Team Suite .NET 2.0.... Thanks! Tag: Form Editing Events Tag: 110696
  - 6
    - Detecting a tray control Hi there, I need to determine if an arbitrary control appears on a form's design tray or the actual form itself (or other parent container). Is the following check reliable or is there an official way (or something cleaner). Thanks. public static bool IsTrayControl(Control control) { return (TypeDescriptor.GetProperties(control)["TrayLocation"] != null); } Tag: Form Editing Events Tag: 110694
  - 7
    - is there a 'flush' type method in VB.Net Here's the scenario - I'm iterating through a directory, dynamically adding picturebox controls to a container, with a For Loop On screen, you don't see anything until it actually fully populates In ASP.Net, there is a command - Response.Flush - you can put this before the end of the loop, to make the page show what's just been done. Is there anything like this in VB.Net? (I hope I've fully explained the need) Tag: Form Editing Events Tag: 110690
  - 8
    - ReportViewer and Terminal Services I have an application with vb.net using reporting services local (rdlc). When I run under windows, it prints fine. When I run under Terminal Services, sometimes it takes 3 times to print. Print, and it looks like it did, but it never appears. Notepad, office apps seem to print fine. I was able to trace it. I click the Print button on the dialog box. I see the print entering the print queue, but it immediately is deleted. I print a second time, and it works. It is reproducable under terminal services. It works fine under normal Windows. Tag: Form Editing Events Tag: 110682
  - 9
    - Disable Form Resizing How do I disable form resizing for users in Winforms 2.0? Tag: Form Editing Events Tag: 110676
  - 10
    - copying an event handler in vb.net I am using vb.net and basically I am trying to build a series of buttons at runtime based on menu entries created at design time on a ContextMenuStrip What I would like to do is make the Click event of a button created at runtime execute the same event handler as the Click event of the ToolStripMenuItem. so in pseudo code newButton.OnClick = menuItem.OnClick I wondered is this possible via reflection to get the event handlers address to use in an AddHandler call for the button, but I am not sure how to go about this. Thanks Adrian Tag: Form Editing Events Tag: 110674
  - 11
    - Prevent a window from moving when taskbar gets autohide disabled. I have a windows form that shifts position when the taskbar autohide property is disabled. The windows does not move back to the original position when the autohide property is turned back on. I have not been able to catch the position changing anywhere in my code and so I am thinking that it is taking place inside the Form class. I have tried the Locked property for my form but it doesn't make a difference. Any suggestions? Thanks, Ken Tag: Form Editing Events Tag: 110673
  - 12
    - Internal error in ToolStrip Please help! System.ArgumentOutOfRangeException: Index was out of range. Must be non-negative and less than the size of the collection. Parameter name: index at System.Collections.ArrayList.get_Item(Int32 index) at System.Windows.Forms.ToolStripItemCollection.get_Item(Int32 index) at System.Windows.Forms.ToolStrip.OnPaint(PaintEventArgs e) at System.Windows.Forms.Control.PaintWithErrorHandling(PaintEventArgs e, Int16 layer, Boolean disposeEventArgs) at System.Windows.Forms.Control.WmPaint(Message& m) at System.Windows.Forms.Control.WndProc(Message& m) at System.Windows.Forms.ScrollableControl.WndProc(Message& m) at System.Windows.Forms.ToolStrip.WndProc(Message& m) at System.Windows.Forms.StatusStrip.WndProc(Message& m) at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m) at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m) at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam) Tag: Form Editing Events Tag: 110672
  - 13
    - DGV CellValidating event not letting new forms be focused I have a form with a DataGridView in an MDI application that handles the CellValidating event. If I set DataGridViewCellValidatingEventArgs.Cancel to true, I can't navigate off the cell within the form as expected. However, If I use the MDIParent to create a new instance if the child form, the focus remains on the error cell in the first form even with the new form in the foreground. The behavior that I would like to create here would be for the focus to remain in the error cell when that form is in focus, but for new forms to be able to be created and focused on their own. What is the best way to achieve this? Thanks in advance. Tag: Form Editing Events Tag: 110671
  - 14
    - DataGrid Binding / Threading Slow Updates I have a VB.NET Windows Form that contains a datagrid control that uses databinding to an object. I have tried using threading and updating the databound object (by marshalling to the UI thread) by using a separate thread however there are still delays when 32000 rows / items are added. It stops other windows from responding for a brief second. I also have an animated gif on the form and that stops responding. Is is possible to have the datagrid run completely within a separate thread, or have two UI threads run in the form so that the form and animated gif is not affected when the datagrid updates? Any help with this would be appreciated Tag: Form Editing Events Tag: 110665
  - 15
    - DataGridViewComboBox required two times click to select item hi guys I put DataGridViewComboBox in datagridview .but its required two times click. i want such that when user click once on DataGridViewComboBox cell, dropdown should comes.I tried but didn't find the exact way to do that. U have any idea plez mail . Thanks Neeraj Tag: Form Editing Events Tag: 110664
  - 16
    - Validating bound text box I have a windows form (.net 2.0). On this form I have a BindingSource. I set the DataSource to a dataset that is created in code then "built" using the ReadXMLSchema method. I have have bound a textbox to one of the fields in that BindingSource that is of type int. If I type anything but an int, I cannot do anything. I cannot close the form, I cannot set focus on another control. No exception is thown. The DataError event on the BindingSource doesn't fire. The Validating event on the TextBox fires and in fact I have had to check the value so that I can raise a message if the item is not a number. But I would rather catch whatever it is that is stopping me from leaving that control and displaying an error at that point. -- Russel Loski, MCSD.Net Tag: Form Editing Events Tag: 110660
  - 17
    - Dynamically Adding Controls to Forms Hi , I am required to create a Table like structure in Windows forms to which i need to add controls dynamically. what is the best control available for this requirement. i tryed using TableLayoutPanel but failed coz each row is accepting only one control. Thanks in Advance Happy programming KS. Tag: Form Editing Events Tag: 110657
  - 18
    - How to show the standard call log winform through code?? I have developed a pocket pc 2005 application in C#,which basically search from the call log entries and shows those entries. Now i want to list down the certain calls e.g. i want to list down all the calls of a particular contact. My first query is that can i sort the call log entries by that parameter? Secondly if i am able to do that then can i display it like the same way WM 5.0 shows it.(means standard call log display form)?? Is there any shell API to do that?? Please help. Tag: Form Editing Events Tag: 110656
  - 19
    - clickOnce (more instances of installation) Hi, I have created a basic application, which is deployed as clickOnce and has some dll and one config file. Application 1 = main .exe file + dlls + one specific .config file Application 2 = main .exe file + dlls + another specific .config file ... What do I need to set to install them as completely independent ? I tried to change everything in ClickOnce Deployment Manifest file, but one application still updates the second one... In ClickOnce Application Manifest file, it seems that there is nothing specific changeable, but maybe I'm wrong. (I need also have two shortcuts in Start/Programs, but as I said, one installation always replaces the another... ) Thank you very much for any answer or idea Ondrej Dobecka ondradocasny@community.nospam ondrej.dobecka@tietoenator.com Tag: Form Editing Events Tag: 110655
  - 20
    - clickOnce (more instances of installation) This is a multi-part message in MIME format. ------=_NextPart_000_002F_01C78282.8822A640 Content-Type: text/plain; charset="iso-8859-2" Content-Transfer-Encoding: quoted-printable Hi, I have created a basic application, which is deployed as clickOnce and = has some dll and one config file.=20 Application 1 =3D main .exe file + dlls + one specific .config file Application 2 =3D main .exe file + dlls + another specific .config file ... What do I need to set to install them as completely independent ? I tried to change everything in ClickOnce Deployment Manifest file, but = one application still updates the second one...=20 In ClickOnce Application Manifest file, it seems that there is nothing = specific changeable, but maybe I'm wrong. (I need also have two shortcuts in Start/Programs, but as I said, one = installation always replaces the another... ) Thank you very much for any answer or idea Ondrej Dobecka ondrej.dobecka@tietoenator.com ------=_NextPart_000_002F_01C78282.8822A640 Content-Type: text/html; charset="iso-8859-2" 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-8859-2"> <META content=3D"MSHTML 6.00.2900.3059" name=3DGENERATOR> <STYLE></STYLE> </HEAD> <BODY> <DIV><FONT face=3DVerdana size=3D2>Hi,</FONT></DIV> <DIV><FONT face=3DVerdana size=3D2></FONT> </DIV> <DIV><FONT face=3DVerdana size=3D2>I have created a basic application, = which is=20 deployed as <STRONG>clickOnce </STRONG>and has some dll and one config = file.=20 </FONT></DIV> <DIV><FONT face=3DVerdana size=3D2></FONT> </DIV> <DIV><FONT face=3DVerdana size=3D2><STRONG>Application = 1 =3D</STRONG> main=20 <STRONG>.exe </STRONG>file + <STRONG>dlls=20 </STRONG>+      one = specific <STRONG>.config=20 </STRONG>file</FONT></DIV> <DIV><FONT face=3DVerdana = size=3D2><STRONG>Application 2 =3D</STRONG> main=20 <STRONG>.exe </STRONG>file + <STRONG>dlls </STRONG>+ another=20 specific <STRONG>.config </STRONG>file</FONT></DIV> <DIV><FONT face=3DVerdana size=3D2>...</FONT></DIV> <DIV><FONT face=3DVerdana size=3D2></FONT> </DIV> <DIV><FONT face=3DVerdana size=3D2></FONT> </DIV> <DIV><FONT face=3DVerdana size=3D2>What do I need to set to install=20 them<STRONG> </STRONG>as<STRONG> completely independent=20 ?</STRONG></FONT></DIV> <DIV><STRONG><FONT face=3DVerdana size=3D2></FONT></STRONG> </DIV> <DIV><FONT face=3DVerdana size=3D2>I tried to change everything in=20 <STRONG>ClickOnce Deployment Manifest </STRONG>file, but one application = still=20 <STRONG>updates </STRONG>the second one... </FONT></DIV> <DIV><FONT face=3DVerdana size=3D2>In ClickOnce Application Manifest = file, it seems=20 that there is nothing specific changeable, but maybe I'm = wrong.</FONT></DIV> <DIV><FONT face=3DVerdana size=3D2></FONT> </DIV> <DIV><FONT face=3DVerdana size=3D2>(I need also have two shortcuts in=20 Start/Programs, but as I said, one installation always replaces the = another...=20 )</FONT></DIV> <DIV><FONT face=3DVerdana size=3D2></FONT> </DIV> <DIV><FONT face=3DVerdana size=3D2>Thank you very much for any answer=20 or idea</FONT></DIV> <DIV><FONT face=3DVerdana size=3D2></FONT> </DIV> <DIV><FONT face=3DVerdana size=3D2></FONT> </DIV> <DIV><FONT face=3DVerdana size=3D2>Ondrej Dobecka</FONT></DIV> <DIV><FONT face=3DVerdana size=3D2><A=20 href=3D"mailto:ondrej.dobecka@tietoenator.com">ondrej.dobecka@tietoenator= .com</A></FONT></DIV></BODY></HTML> ------=_NextPart_000_002F_01C78282.8822A640-- Tag: Form Editing Events Tag: 110653
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    - Change the Internet Explorer Window Title in C# HI I am using Visual Studio.Net 2003 and using C# I would like to know how is it possible to change the Internet explorer window title? ie. i want to get rid of "Microsot Internet Explorer" that appears after my application name on the title bar and if possible, get rid of the IE logo at the start of the address bar. Tag: Form Editing Events Tag: 110652
  - 22
    - System.Configuration.ConfigurationErrorsException saving config file after encrypting with RsaProtectedConfigurationProvider Hi, One of my users is getting a System.Configuration.ConfigurationErrorsException when my Windows Forms application tries to encrypt and save the application config file, but it only happens for him and no other users!? I don't really know anything about the security classes so don't have any idea where to start looking, but would love some suggestions. He gets the exception when running the application on other users' machines for whom it works fine, and other users are able to log in on his machine and use the application. So I'm guessing it's something to do with his profile but I have no idea where to look. He and all other users have the same .NET version; I installed it as part of the application install and noone had previous .NET runtimes on their machine. In my live application I get a standard windows box saying the program had a problem and had to be closed, do I want to send info to MS. (That's despite having set a ThreadException handler which normally logs and shows a message for all unhandled exceptions, which is slightly odd in itself.) I created a test app to determine where it's failing, and it crashes in this method: private void btnProtectConfiguration_Click(object sender, EventArgs e) { string provider = "RsaProtectedConfigurationProvider"; Configuration config = null; config = ConfigurationManager.OpenExeConfiguration(ConfigurationUserLevel.None); ConfigurationSection section = config.ConnectionStrings; if ((section.SectionInformation.IsProtected == false) && (section.ElementInformation.IsLocked == false)) { // Protect (encrypt) the "connectionStrings" section. section.SectionInformation.ProtectSection(provider); // Save the encrypted section. section.SectionInformation.ForceSave = true; config.Save(ConfigurationSaveMode.Full); } MessageBox.Show("ok"); } The info in the standard .NET exception handler is at the bottom of this post. In my test app he is able to save the config file fine without encryption, using this code: private void btnSaveConfig_Click(object sender, EventArgs e) { // Same stuff as ProtectConfiguration, but without the protection. // Checks if we can open and save the config file. Configuration config = null; config = ConfigurationManager.OpenExeConfiguration(ConfigurationUserLevel.None); ConfigurationSection section = config.ConnectionStrings; section.SectionInformation.ForceSave = true; config.Save(ConfigurationSaveMode.Full); MessageBox.Show("ok"); } He's also able to do RSA encryption and decryption using the RSACryptoServiceProvider class; I included in my test app the sample code here: http://msdn2.microsoft.com/en-us/library/system.security.cryptography.rsacryptoserviceprovider(VS.80).aspx If anyone can suggest why this exception could be occurring and why it's attached to just this user I'd greatly appreciate it! fyi the reason I'm doing this is that during application install my application opens and encrypts the config file so connection details can't be read by the casual observer. Not perfect security but good enough, providing it runs! many thanks, - Rory ************** Exception Text ************** System.Configuration.ConfigurationErrorsException: An error occurred executing the configuration section handler for connectionStrings. --- > System.Configuration.ConfigurationErrorsException: Failed to encrypt the section 'connectionStrings' using provider 'RsaProtectedConfigurationProvider'. Error message from the provider: Object already exists. ---> System.Security.Cryptography.CryptographicException: Object already exists. at System.Security.Cryptography.CryptographicException.ThrowCryptogaphicException(Int32 hr) at System.Security.Cryptography.Utils._CreateCSP(CspParameters param, Boolean randomKeyContainer, SafeProvHandle& hProv) at System.Security.Cryptography.Utils.CreateProvHandle(CspParameters parameters, Boolean randomKeyContainer) at System.Security.Cryptography.Utils.GetKeyPairHelper(CspAlgorithmType keyType, CspParameters parameters, Boolean randomKeyContainer, Int32 dwKeySize, SafeProvHandle& safeProvHandle, SafeKeyHandle& safeKeyHandle) at System.Security.Cryptography.RSACryptoServiceProvider.GetKeyPair() at System.Security.Cryptography.RSACryptoServiceProvider..ctor(Int32 dwKeySize, CspParameters parameters, Boolean useDefaultKeySize) at System.Security.Cryptography.RSACryptoServiceProvider..ctor(CspParameters parameters) at System.Configuration.RsaProtectedConfigurationProvider.GetCryptoServiceProvider(Boolean exportable, Boolean keyMustExist) at System.Configuration.RsaProtectedConfigurationProvider.Encrypt(XmlNode node) at System.Configuration.ProtectedConfigurationSection.EncryptSection(String clearXml, ProtectedConfigurationProvider provider) at System.Configuration.Internal.InternalConfigHost.System.Configuration.Internal.IInternalConfigHost.EncryptSection(String clearTextXml, ProtectedConfigurationProvider protectionProvider, ProtectedConfigurationSection protectedConfigSection) at System.Configuration.Internal.DelegatingConfigHost.EncryptSection(String clearTextXml, ProtectedConfigurationProvider protectionProvider, ProtectedConfigurationSection protectedConfigSection) at System.Configuration.Internal.DelegatingConfigHost.EncryptSection(String clearTextXml, ProtectedConfigurationProvider protectionProvider, ProtectedConfigurationSection protectedConfigSection) at System.Configuration.MgmtConfigurationRecord.GetConfigDefinitionUpdates(Boolean requireUpdates, ConfigurationSaveMode saveMode, Boolean forceSaveAll, ConfigDefinitionUpdates& definitionUpdates, ArrayList& configSourceUpdates) --- End of inner exception stack trace --- at System.Configuration.MgmtConfigurationRecord.GetConfigDefinitionUpdates(Boolean requireUpdates, ConfigurationSaveMode saveMode, Boolean forceSaveAll, ConfigDefinitionUpdates& definitionUpdates, ArrayList& configSourceUpdates) --- End of inner exception stack trace --- at System.Configuration.MgmtConfigurationRecord.GetConfigDefinitionUpdates(Boolean requireUpdates, ConfigurationSaveMode saveMode, Boolean forceSaveAll, ConfigDefinitionUpdates& definitionUpdates, ArrayList& configSourceUpdates) at System.Configuration.MgmtConfigurationRecord.SaveAs(String filename, ConfigurationSaveMode saveMode, Boolean forceUpdateAll) at System.Configuration.Configuration.SaveAsImpl(String filename, ConfigurationSaveMode saveMode, Boolean forceSaveAll) at System.Configuration.Configuration.Save(ConfigurationSaveMode saveMode) at DotNetTester.frmDotNetTester.btnProtectConfiguration_Click(Object sender, EventArgs e) in C:\code\CAP\DotNetTester\DotNetTester \Form1.cs:line 39 at System.Windows.Forms.Control.OnClick(EventArgs e) at System.Windows.Forms.Button.OnClick(EventArgs e) at System.Windows.Forms.Button.OnMouseUp(MouseEventArgs mevent) at System.Windows.Forms.Control.WmMouseUp(Message& m, MouseButtons button, Int32 clicks) at System.Windows.Forms.Control.WndProc(Message& m) at System.Windows.Forms.ButtonBase.WndProc(Message& m) at System.Windows.Forms.Button.WndProc(Message& m) at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m) at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m) at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam) ************** Loaded Assemblies ************** mscorlib Assembly Version: 2.0.0.0 Win32 Version: 2.0.50727.42 (RTM.050727-4200) CodeBase: file:///C:/WINDOWS/Microsoft.NET/Framework/v2.0.50727/mscorlib.dll ---------------------------------------- DotNetTester Assembly Version: 1.0.0.0 Win32 Version: 1.0.0.0 CodeBase: file:///C:/Documents%20and%20Settings/Ravi/Desktop/DotNetTester%20v1.0/DotNetTester.exe ---------------------------------------- System.Windows.Forms Assembly Version: 2.0.0.0 Win32 Version: 2.0.50727.42 (RTM.050727-4200) CodeBase: file:///C:/WINDOWS/assembly/GAC_MSIL/System.Windows.Forms/2.0.0.0__b77a5c561934e089/System.Windows.Forms.dll ---------------------------------------- System Assembly Version: 2.0.0.0 Win32 Version: 2.0.50727.42 (RTM.050727-4200) CodeBase: file:///C:/WINDOWS/assembly/GAC_MSIL/System/2.0.0.0__b77a5c561934e089/System.dll ---------------------------------------- System.Drawing Assembly Version: 2.0.0.0 Win32 Version: 2.0.50727.42 (RTM.050727-4200) CodeBase: file:///C:/WINDOWS/assembly/GAC_MSIL/System.Drawing/2.0.0.0__b03f5f7f11d50a3a/System.Drawing.dll ---------------------------------------- System.Configuration Assembly Version: 2.0.0.0 Win32 Version: 2.0.50727.42 (RTM.050727-4200) CodeBase: file:///C:/WINDOWS/assembly/GAC_MSIL/System.Configuration/2.0.0.0__b03f5f7f11d50a3a/System.Configuration.dll ---------------------------------------- System.Xml Assembly Version: 2.0.0.0 Win32 Version: 2.0.50727.42 (RTM.050727-4200) CodeBase: file:///C:/WINDOWS/assembly/GAC_MSIL/System.Xml/2.0.0.0__b77a5c561934e089/System.Xml.dll ---------------------------------------- System.Security Assembly Version: 2.0.0.0 Win32 Version: 2.0.50727.42 (RTM.050727-4200) CodeBase: file:///C:/WINDOWS/assembly/GAC_MSIL/System.Security/2.0.0.0__b03f5f7f11d50a3a/System.Security.dll ---------------------------------------- Tag: Form Editing Events Tag: 110651
  - 23
    - System.Configuration.ConfigurationException: Child nodes not allowed Hello everyone, I have a small windowsforms app developed for framework 1.1 that uses a configsection in the .config file. Everything works ok on most boxes... On one particular pc i get the error "System.Configuration.ConfigurationException: Child nodes not allowed" while trying to read the configuration session using: Dicto = CType(ConfigurationSettings.GetConfig(SECTION_NAME), IDictionary) Dicto is an IDictionary... Seems an installation issue, but have googled a lot finding nothing... Thanx in Advance Paolo Tag: Form Editing Events Tag: 110650
  - 24
    - Form.Closing event not fired always when i call Form.Close method Hi, Form1 form1 = Form1; //Form2 is created and closed inside Form1. When I call form1.form2.Close() method the following method is called when I run the application in few machine but not in others. private void Form2_Closing(...) Any clues on this? Thanks in advance. Tag: Form Editing Events Tag: 110648
  - 25
    - How to install a font in VB.Net? How can you 'install' a font, using VB.Net? I tried System.IO - just copying it, but it didn't add it to the system's list of installed fonts immediately. when my app loads, it populates a combobox with the installed fonts - then, I need to install a font, clear the list, and then fill the list again, including the new font. Tag: Form Editing Events Tag: 110647

Hi,

I'm designing a form and I'd like to know when a control has been
edited. I know how to get around this, by putting code behind every
control to see if theres a change and then set a flag, but thats a
waste of time and a lot of code to write.

I can see someone having a much more elegant solution, I just can't
work it out. I was thinking of having every control inherit some
master control so I can have one peice of code that 'detects' when a
change has been made to any field or check box, just not sure how to
go about it.

Anyone have a nice and simple solution?

Thanks,

Top

Re: Form Editing Events by Bryan

Bryan
Wed Apr 25 09:45:20 CDT 2007

In your form load event, loop through your form's control collection and
dynamically add an event handler to each one that points to a single
method in your form.

In that single method, you can set a flag.

In total, that should be about 15-20 lines of code.

--
Bryan Phillips
MCSD, MCDBA, MCSE
Blog: http://bphillips76.spaces.live.com
Web Site: http://www.composablesystems.net

"Sir Psycho" <totalharmonicdistortion@hotmail.com> wrote in message
news:1177510331.918705.153750@r30g2000prh.googlegroups.com:

> Hi,
>
> I'm designing a form and I'd like to know when a control has been
> edited. I know how to get around this, by putting code behind every
> control to see if theres a change and then set a flag, but thats a
> waste of time and a lot of code to write.
>
> I can see someone having a much more elegant solution, I just can't
> work it out. I was thinking of having every control inherit some
> master control so I can have one peice of code that 'detects' when a
> change has been made to any field or check box, just not sure how to
> go about it.
>
> Anyone have a nice and simple solution?
>
> Thanks,

Top