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• How to use a c# datagridview to update a database file just like Access does?

  - by mackeyka

  I have googled everywhere and I am finally giving up and asking here. I am working in Visual Studio 2010 with C#. I have set up a form with a datagridview connected to a MSSQL database and I need to save changes made in the datagridview back to the physical database. I am having some success but I think that I am going about some of it completely wrong because I can not get it to save consistently. What I really want is for the updates to work just like they do when working with Access. When I edit a row in the datagridview and then leave that row, either by selecting another row or by selecting some other control on the form or even by changing to another form or quitting the application the row should be automatically pdated to the physical database. The first part of this question I think is, what is the proper event to use to trigger the save and then second what methods should be used to actually write the data to the database?

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• implement button click in html

  - by vbNewbie

  I have been trying to execute a button event in html page that displays additional content on the web page. I am getting a null reference error when using the getelementbyid and not sure how to change this. Here is the html reference I need to engage: <div class="button" style="float:none;width:180px;margin:20px auto 30px;"><a href="#" id="more" style="width:178px">Show more ?</a></div> </div> and here is my code: Dim wb As New WebBrowser wb.Navigate(fromUrl) While wb.ReadyState <> WebBrowserReadyState.Complete Application.DoEvents() End While Debug.Write(wb.DocumentText) Dim htmlElements As HtmlElementCollection = wb.Document.GetElementsByTagName("<a") If Not wb.Document Is Nothing Then Try If wb.DocumentText.Contains("more") Then If wb.Document.GetElementById("more").GetAttribute("href") Then wb.Document.GetElementById("more").InvokeMember("#") End If End If Catch ex As Exception MessageBox.Show(ex.Message.ToString) End Try End If I appreciate any ideas.

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• Postback problem downloading zip file

  - by Chris Conway

  I've got a problem on a webforms application where a user selects some criteria from dropdowns on the page and hits a button on the page which calls this method: protected void btnSearch_Click(object sender, EventArgs e) They then click on button to download a zip file based on the criteria which calls this method: protected void btnDownload_Click(object sender, EventArgs e) In IE, they are prompted with the bar at the top of the browser that tells them "To help protect your security, Internet Explorer blocked this site from downloading files to your computer". When they click on that bar to download the file, it fires the btnSearch_Click event again. Response.ContentType and Response.AddHeader has been set up correctly. The problem is, that btnSearch appends criteria so basically it is being appended twice and causing problems. Is there something I can do to prevent this? This is a vs2008 web app using c# 3.5 for what it's worth. Thanks!

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• No events are fired from an imagebrush via ImageOpened/ImageFailed

  - by umlgorithm

  A canvas is received from the server, and an image brush is extracted from the canvas via searching for a bunch of pathes. In summary, Canvas - Path - Path.Fill - ImageBrush. Now, I want to take a snapshot of the ImageBrush using WriteableBitmap when it is loaded and here is what I did var imageBrushes = VisualTreeUtility.FindVisualChildren<Path>(canvas) .Where(i => i.Fill.GetType() == typeof(ImageBrush)) .Select(p => p.Fill); foreach(var image in imageBrushes) { image.ImageOpened += delegate { //never gets here }; image.ImageFailed += delegate { //never gets here either }; // if the image is already loaded if (((BitmapSource)image.ImageSource).PixelWidth != 0) { // never gets here either } } As you can see the comments in the code above, no matter what I try, I can't seem to catch an event from the image. Any suggestions?

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• NHibernate filters don't work with Session.Get

  - by Khash

  I'm trying to implement a Soft-deletable repository. Usually this can be easily done with a Delete Event listener. To filter out the deleted entities, I can add a Where attribute to my class mapping. However, I also need to implement two more methods in the repository for this entity: Restore and Purge. Restore will "undelete" entities and Purge will hard-delete them. This means I can't use Where attribute (since it block out soft-deleted entities to any access) I tried using filters instead. I can create a filter and enable or disable it within session to achieve the same result. But the problem is filters don't have any effect on Session.Get method (they only affect ICriteria based access). Any ideas as to how solve this problem? Thanks

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• Why doesn't SetNotifyWindowMessage() call my WndProc()?

  - by manuel

  I'm using WinForms, and I'm trying to get SetNotifyWindowMessage() to call the WndProc, but it does not do so. The function call: HRESULT initSAPI(HWND hWnd) { ... if(FAILED( g_cpRecoCtxt->SetNotifyWindowMessage( hWnd, WM_RECOEVENT, 0, 0 ))) MessageBoxW(hWnd, L"Error sending window message", L"SAPI Initialization Error", 0); ... } The WndProc: LRESULT WndProc (HWND hWnd, UINT message, WPARAM wparam, LPARAM lparam) { case WM_RECOEVENT: ProcessRecoEvent(hWnd); break; default: return DefWindowProc(hWnd, message, wParam, lParam); } Note: initSAPI() is called on a mouse click event.

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• Implement keyboard control in JavaScript Grid

  - by Vanco

  I finished building a JavaScript grid control, end everything works fine. Paging, button navigation, column sorting, etc. The cells in the grid are DIVs which are generated using Mootools 1.2.4 (which is heavily used throughout the control). I want to implement keyboard control for the grid, both for paging (page up/page down) and for moving with arrow keys inside the rows/cells of the grid. I think that I have to attach an event handler on each cell of the grid and detect what key is being pressed in order to take an appropriate action. But, I can't set the focus on the cells. What am I missing? How do I do this? Any help is appreciated.

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• EXT JS toLayout on Viewport doesnt show anything...

  - by Nazariy

  After reading many example about adding new components in to existing container without reloading whole page I run in to small problem while combining tree and tabs inside Viewport component. What I'm trying to do is to register on click event to tree node and load in to content container new component, depending on node type it can be tabpanel, gridpanel or any other available component. here is short example of tree object: { xtype: 'treepanel', id: 'tree-panel', listeners: { click: function(n) { var content = Ext.getCmp('content-panel'); content.setTitle(n.attributes.qtip); //remove all components from content-panel content.removeAll(); content.add(dummy_tabs2); content.doLayout(); return; } }} All DOM manipulation went fine, everything registered properly, new Title shown, but dummy_tabs2 are not shown. I did try to set various properties for doLayout(true|false, true|false) but nothing happens. Am I doing something wrong?

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• Resize an asp.net panel width based on a checkboxlist?

  - by larryq

  Hi everyone, I have an asp.net panel that contains a checkboxlist. I'd like to resize it so that its width fits the list's contents snugly. Right now I'm handling the panel's pre rendering event, setting its width to match that of the checkboxlist. However it appears the checkboxlist's width property reads zero (at least in this pre render method) so the panel's width is set identically, which leads to inconsistent renderings in Firefox vs IE. Does anyone have a better approach to doing what I'm attempting here? Many thanks.

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• Storing script files outside web root

  - by memilanuk

  I've seen recommendations to store some or all php include files some place other than in the web document root directory (username/public_html in my case) for the specific reason of protecting php files with sensitive information (like database connection and login info) in the event that the web server hiccups and stops protecting php files and they become 'visible' to outsiders who know where to look. It seems somewhat paranoid to me, but I'm guessing people have gotten burned badly on this before so I'm willing to go along. The suggestion usually takes the form of having the include files in something like '../include_files/' so its not directly in the document root and not directly accessible to outsiders through the web server. My question is this: is there a significant difference in security between that way and just putting your 'include_files' directory under the document root and sticking an .htaccess file in there (with the appropriate entries)? Would putting an .htaccess file in '../include_files/' make any significant improvement there? TIA, Monte

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• Converting SQL to LINQ to XML

  - by Morano88

  I'm writing the following code to convert SQL to LINQ and then to XML: SqlConnection thisConnection = new SqlConnection(@"Data Source=3BDALLAH-PC;Initial Catalog=XMLC;Integrated Security=True;Pooling=False;"); thisConnection.Open(); XElement eventsGive = new XElement("data", from c in ?????? select new XElement("event", new XAttribute("start", c.start), new XAttribute("end",c.eend), new XAttribute("title",c.title), new XAttribute("Color",c.Color), new XAttribute("link",c.link))); Console.WriteLine(eventsGive); The name of the table is "XMLC" and I want to refer to it. How can I do that? When I put its name directly VS gives an error. Also when I say thisConnection.XMLC it doesn't work.

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• Out-of-the-box Eclipse PDT (PHP Development Tool) not capable of debugging PHP, why?

  - by Alex R

  I just finished reinstalling the "All-In-One Eclipse PDT" from zend.com. It's unable to debug even the simplest "Hello World" PHP script. How can such a major open-source app be released in such a bad shape? What am I doing wrong? This is the result of doing a "Debug As...": Problem signature: Problem Event Name: APPCRASH Application Name: php.exe Application Version: 5.2.9.9 Application Timestamp: 49dda267 Fault Module Name: ntdll.dll Fault Module Version: 6.0.6002.18005 Fault Module Timestamp: 49e03824 Exception Code: c0000130 Exception Offset: 0006f04e OS Version: 6.0.6002.2.2.0.768.3 Locale ID: 1033 Additional Information 1: 9d13 Additional Information 2: 1abee00edb3fc1158f9ad6f44f0f6be8 Additional Information 3: 9d13 Additional Information 4: 1abee00edb3fc1158f9ad6f44f0f6be8 Read our privacy statement: http://go.microsoft.com/fwlink/?linkid=50163&clcid=0x0409 I think it wants me to configure some additional stuff, but I have no clue what exactly to do.

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• AJAX calls from multiple browser tabs at the same time:

  - by Bindi

  When an user tries to send AJAX requests simultaneously from multiple browser tabs, the earlier requests get completed and the page loads but the other AJAX calls are preempted. AS a result of which the response is empty for the other calls. Only one call survives. In my application using struts 2.0, JSP and javascript and the prototype framework, i found that the server response is empty in the cases mentioned above though the data gets updated in teh database with the request parameters. The onSucess event handler for Ajax.request gets called but the the response is empty. Can you please help? Thanks

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• New Session is created between consecutive servlet request from an Applet and a managed bean??

  - by khue

  Hi, I want to pass parameters betweeen applet and jsf components So when a value of a input textbox changed, its binding backing bean makes connection to a servlet. The servlet create an attribute and save to HttpSession using (request.getSession(true)).setAttribute(name, value); Then at some event, applet will access another servlet. This servlet will try to retrieve the Attribute saved to Session previously. However, everytime, the attirbute returned is null as the new session is created instead. My question is: Is the session should be persist? ( I checked allowcookies, session timeout for weblogic) If yes, what might go wrong with my app? Thanks a lot for your help. Regards K.

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• C++/MFC: Handling multiple CListCtrl's headers HDN_ITEMCLICK events

  - by raph.amiard

  I'm coding an MFC application in which i have a dialog box with multiple CListCtrls in report view. I want one of them to be sortable. So i handled the HDM_ITEMCLICK event, and everything works just fine .. Except that if i click on the headers of another CListCtrl, it does sort the OTHER CListCtrl, which does look kind of dumb. This is apparently due to the fact that headers have an ID of 0, which make the entry in the message map look like this : ON_NOTIFY(HDN_ITEMCLICK, 0, &Ccreationprogramme::OnHdnItemclickList5) But since all the headers have an id of zero, apparently every header of my dialog sends the message. Is there an easy way around this problem ?

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• C++ this as thread parameter, variables unavailable

  - by brecht

  I have three classes: class Rtss_Generator { int mv_transfersize; } class Rtss_GenSine : Rtss_Generator class Rtss_GenSineRpm : Rtss_GenSine Rtss_GenSine creates a thread in his constructer, it is started immediatly and the threadfunction is off-course declared static, waiting for an event to start calculating. the problem: all the variables that are accessed through the gen-pointer are 0, but it does not fail. Also, this-address in the constructer and the gen-pointer-address in the thread are the same, so the pointer is ok. this code is created and compile in visual studio 6.0 service pack 2003 ORIGINAL CODE no thread Rtss_GenSine::getNextData() { //[CALCULATION] //mv_transferSize is accessible and has ALWAYS value 1600 which is ok } NEW CODE Rtss_GenSine::Rtss_GenSine() { createThread(NULL, threadFunction, (LPVOID) this,0,0); } Rtss_GenSine::getNextData() { SetEvent(startCalculating); WaitForSingleObject(stoppedCalculaing, INFINITE); } DWORD Rtss_GenSine::threadFunction(LPVOID pParam) { Rtss_GenSine* gen = (Rtss_GenSine*) pParam; while(runThread) { WaitForSingleObject(startCalculating, INFINITE); ResetEvent(startCalculating) //[CALCULATION] //gen->mv_transferSize ---> it does not fail, but is always zero //all variables accessed via the gen-pointer are 0 setEvent(stoppedCalculaing) } }

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• Best way to handle input from a keyboard "wedge"

  - by Mykroft

  I'm writing a C# POS (point of sale) system that takes input from a keyboard wedge magcard reader. This means that any data it reads off of a mag stripe is entered as if it were typed on the keyboard very quickly. Currently I'm handling this by attaching to the KeyPress event and looking for a series of very fast key presses that contain the card swipe sentinel characters. Is there a better way to deal with this sort of input? Edit: The device does simply present the data as keystrokes and doesn't interface through some other driver. Also We use a wide range of these types of devices so ideally a method should work independent of the specific model of wedge being used. However if there is no other option I'll have to make do.

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• KeyCode_Enter to next edittext

  - by soclose

  Hi, In edittext, after typing 'Enter' key, system make a new line inside it. I'd like to focus on next edittext, no new line. how to code? my code in xml is below <EditText android:id="@+id/txtNPCode" android:layout_width="fill_parent" android:layout_height="wrap_content" android:textSize="18sp" android:layout_alignLeft="@+id/lblNPCode" android:layout_below="@+id/lblNPCode" android:layout_centerHorizontal="true" /> <EditText android:id="@+id/txtCNPCode" android:layout_width="fill_parent" android:layout_height="wrap_content" android:textSize="18sp" android:layout_alignLeft="@+id/lblCNPCode" android:layout_below="@+id/lblCNPCode" android:layout_centerHorizontal="true" /> I also caputer key code in setOnKeyListener tCNPCode.setOnKeyListener(new OnKeyListener() { public boolean onKey(View v, int keyCode, KeyEvent event) { // TODO Auto-generated method stub if(keyCode == 66) { Toast.makeText(S_PCode.this, "Enter Key", Toast.LENGTH_LONG).show(); //tNPCode.setFocusable(true); } return false; } });

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• How do I copy input from one textbox to another via checkbox using jQuery?

  - by Jesse

  I'm cleaning up a simple form that has a Start Date textbox and an End Date textbox. I want to add a checkbox in between these fields that the user can check if the End Date is the same as the Start Date, so when they check it, the Start Date input value (e.g., 04/01/09) will automagically appear in the End Date textbox, so they don't have to type in the same date twice. Does that make sense? BTW, I'm using the sexy jquery datepicker UI, and it's sweet, but I just can't figure out the above problem. I know there's a simple solution (event handler?) but I'm stumped.

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• how can I override an anonymous javascript function attached to an eventlistener?

  - by Sid

  I found that a website does somewhat sneaky things. When you hover over a link, it shows you the real URL. WHen you click on it, it uses the click/mousedown event to rewrite the URL. I want to override that behaviour in firefox, So I fired up firebug to see what it does. On a mouse click, it executes a function called window.tgs. Easy, I thought. I can override this function. My first attempt was to do get the element via getELementsByTagName(), and then element.removeEventListener("click",window.tgs, false); To my surprise, this did nothing. I tried redefining window.tgs window.tgs = function() { return true; }; that did not do anything either. I am not a JS expert. Your insights appreciated thanks Sid

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• what is this called? and how to achieve it?

  - by user287745

  i would like to make a WRITE A NEW POST page similar to asp.net or how to make a page similar to http://stackoverflow.com/questions/ask please note, i do not want reference to already made controls like free rich text editor etc i would like to do the required coding my self any guidance will be appreciated i would also like to know what is the name given to this kind of page? as i search google for how to make a post and it comes up with et and post methods of html initial attempt:- on button click post back event within the update plane, literal1.text=textbox1.text assuming that user will provide formats like bold, but the textbox is not taking any such input.

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• How to set the size of a wx.aui.AuiManager Pane that is centered?

  - by aF

  Hello, I have three panes with the InfoPane center option. I want to know how to set their size. Using this code: import wx import wx.aui class MyFrame(wx.Frame): def __init__(self, parent, id=-1, title='wx.aui Test', pos=wx.DefaultPosition, size=(800, 600), style=wx.DEFAULT_FRAME_STYLE): wx.Frame.__init__(self, parent, id, title, pos, size, style) self._mgr = wx.aui.AuiManager(self) # create several text controls text1 = wx.TextCtrl(self, -1, 'Pane 1 - sample text', wx.DefaultPosition, wx.Size(200,150), wx.NO_BORDER | wx.TE_MULTILINE) text2 = wx.TextCtrl(self, -1, 'Pane 2 - sample text', wx.DefaultPosition, wx.Size(200,150), wx.NO_BORDER | wx.TE_MULTILINE) text3 = wx.TextCtrl(self, -1, 'Main content window', wx.DefaultPosition, wx.Size(200,150), wx.NO_BORDER | wx.TE_MULTILINE) # add the panes to the manager self._mgr.AddPane(text1, wx.CENTER) self._mgr.AddPane(text2, wx.CENTER) self._mgr.AddPane(text3, wx.CENTER) # tell the manager to 'commit' all the changes just made self._mgr.Update() self.Bind(wx.EVT_CLOSE, self.OnClose) def OnClose(self, event): # deinitialize the frame manager self._mgr.UnInit() # delete the frame self.Destroy() app = wx.App() frame = MyFrame(None) frame.Show() app.MainLoop() I want to know what is called when we change the size of the panes. If you tell me that, I can do the rest by myself :)

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• Data mining logs to locate a bug

  - by gooli

  I'm working on a data distribution application which receives data from a source and distributes that data to multiple target application. After successfully distributing several messages each second for 8 days, it missed a single message and did not deliver it properly to the clients. As I was looking at the logs I tried to find something there that was special for the time the miss happend - either in the data, its rate or some other condition but couldn't find anything. Is there any data mining technique I can use to identify how that specific event differs from other events?

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• Using SortableRows and know when rows have been moved

  - by DW

  I want to take advantage of the sortableRows property of the jqGrid. How do I detect when a row has been moved. I have studied the documentation and looked for examples but haven't found much. I do believe it is something like jQuery("#grid").sortableRows({connectWith:'#gird', ondrop: function(){ alert("row moved") }}); but that does not work. I can move the rows, but don't seemed to have trapped the event. Is there something wrong with my syntax or my approach in general. Basically, I need to know that the rows have been rearranged so I can be sure they get saved with their new order. Thanks

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• Combining Two Models in Rails for a Form

  - by matsko

  Hey Guys. I'm very new with rails and I've been building a CMS application backend. All is going well, but I would like to know if this is possible? Basically I have two models: @page { id, name, number } @extended_page { id, page_id, description, image } The idea is that there are bunch of pages but NOT ALL pages have extended_content. In the event that there is a page with extended content then I want to be able to have a form that allows for editing both of them. In the controller: @page = Page.find(params[:id]) @extended= Extended.find(:first, :conditions = ["page_id = ?",@page.id]) @combined = ... #merge the two somehow So in the view: <%- form_for @combined do |f| % <%= f.label :name % <%= f.text_field :name % ... <%= f.label :description % <%= f.text_field :description % <%- end This way in the controller, there only has to be one model that will be updated (which will update to both). Is this possible?

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