C#

FirstPrevNext

Re: mark as unsaved if the user changes ANYTHING? DaveyM6925-Jul-09 11:29 DaveyM69 25-Jul-09 11:29  Great suggestions you've had. This[^] is one way of implementing it that I've come across. It's old code, and some of what it uses is marked as obselete, but may be a starting point. It would be very useful if System.Windows.Forms.Control had an IsDirty read only property and an IsDirtyChanced event, then it would cascade through to every control we use, and would automatically be there in any new controls we create. Dave BTW, in software, hope and pray is not a viable strategy. (Luc Pattyn) Visual Basic is not used by normal people so we're not covering it here. (Uncyclopedia) Why are you using VB6? Do you hate yourself? (Christian Graus) Re: mark as unsaved if the user changes ANYTHING? Mike Ellison25-Jul-09 17:39 Mike Ellison 25-Jul-09 17:39  Here's a link to a blog post that fleshes out more what I was talking about: http://mishainthecloud.blogspot.com/2009/07/simple-dirty-tracking-for-winforms-in-c.html[^] I hope this is helpful. MishaInTheCloud.blogspot.com Re: mark as unsaved if the user changes ANYTHING? Guffa25-Jul-09 22:15 Guffa 25-Jul-09 22:15  You don't need an event handler for each field in the form. Just point the Changed event of every relevant control to the same event handler. Despite everything, the person most likely to be fooling you next is yourself. Re: mark as unsaved if the user changes ANYTHING? Megidolaon26-Jul-09 6:18 Megidolaon 26-Jul-09 6:18  Sounds good, but I think I have radio buttons, check boxes, numeric updowns and textboxes, I can only use the same handler if they all use normal EventArgs. Re: mark as unsaved if the user changes ANYTHING? Mike Ellison1-Aug-09 11:00 Mike Ellison 1-Aug-09 11:00  I just wrote a post with sample code that I thought you might be interested in. It shows another approach to dirty tracking that avoids the false positives one gets with the "changed events" method: http://mishainthecloud.blogspot.com/2009/07/slightly-more-sophisticated-winforms.html[^] I hope it's helpful. MishaInTheCloud.blogspot.com ScrollBar in Listview SajjadZare25-Jul-09 6:31 SajjadZare 25-Jul-09 6:31  How can I Move ScrollBar in ListView From left to Right when I set "RightToLeft"property true? Re: ScrollBar in Listview Abhijit Jana25-Jul-09 9:18 Abhijit Jana 25-Jul-09 9:18  I think you need to just set Scrollable=True only. RightToLet Property is used for "Gets or sets a value indicating whether listviews elements are aligned for right-to-left fonts" Please Read the MSDN Documents on Same. Abhijit Jana | Codeproject MVP Web Site : abhijitjana.net Don't forget to click "Good Answer" on the post(s) that helped you. Help with WIA scanning control. CodeBase2525-Jul-09 6:31 CodeBase25 25-Jul-09 6:31  Hey all, Hope you are all doing well. I have a question that I just can't seem to find a good answer to. I am trying to use WIA to scan multiple documents without user interaction. I found out how to call the camera and scanner wizard to acquire images from the scanner and it does allow for document feed. So this all works well and good. The only problem is that my application needs to know where they selected the files to go so that I can send them to the database when they are done. I just can't figure out how to get that location from the wizard. Can someone please lead me in the right direction here, or at least tell me if this is possible with the ShowAcquisitionWizard method? Thanks for any help in advance. Justin | CodeBase25 "Instant programmer, just add coffee" databound comboboxes in datagridview. tonks8425-Jul-09 6:27 tonks84 25-Jul-09 6:27  Hi, I have a bound datagridview which contains three combobox columns. The items in each combobox is databound also but dynamically. Depending on the value of the first combobox, the second and thrid combobox will be bound accordingly. I subscribe to the cellendedit event where I check if the cell is in the first column and then databind the second and third combobox cells accordingly. This works fine. The only problem I have is that when the datagrid view is loaded, as it is databound it is trying to assign the second and third cells of each row values which is not in their respective combobox list as the combobox is not bound. Is there any event available in the datagridview control which will let me check the value just before it is being bound to the datagridview cell. There I can bind the comboboxes before the value get's assigned and I shouldn't get any problems. I tried using the databinding complete but that didn't work.. Any suggestions? Thanks Re: databound comboboxes in datagridview. Omar Akhtar Sheikh25-Jul-09 8:29 Omar Akhtar Sheikh 25-Jul-09 8:29  There is an event named as "Selected Index Changed " used for combo boxes. You should go for that. If that doesn't even solve your problem then contact me again. Re: databound comboboxes in datagridview. tonks8425-Jul-09 8:54 tonks84 25-Jul-09 8:54  There is no Selected Index Changed event for the datagridview combobox. Are there any events that occur while databinding is happening? [Message Deleted] neha_rai25-Jul-09 5:36 neha_rai 25-Jul-09 5:36  [Message Deleted] waiting for reply neha_rai25-Jul-09 9:13 neha_rai 25-Jul-09 9:13  hi..all please give some suggestions if you have on this... Re: moving points Henry Minute25-Jul-09 13:20 Henry Minute 25-Jul-09 13:20  To enable clearing your points simply add a call to Invalidate() to the end of your button2_Click() event handler. private void button2_Click(object sender, EventArgs e) { points.Clear(); this.Invalidate(); } Whilst on the subject of painting, for what you are trying to to do you do not need to override the OnPaint() method, simply handle the Paint event of your form. As far as moving the points is concerned the procedure will be the same as moving any drawing object. 1) Handle the MouseDown event, in it decide if the mouse location (e.Location) is at a point of interest. If so, make a note of the point1 and then set a boolean flag to true (call the flag something like 'moving' so that its name reminds you of what it's for, and take a note of the current position of the mouse in a class scope field (it will be needed in several places), of type Point, something like this.moveStartPoint = e.Location. 2) Handle the MouseUp event, in it set the flag ('moving') to false, and the moveStartPoint to null and call this.Invalidate() 3) Handle the MouseMove event, in it first check that 'moving' is true (this means that the mouse is still down). If not return. If it is true then set the point that you made a note of in 1)1 to the new location of the mouse. As you are only moving a point you can set it directly but if you were moving a 'shape' fro example, you would have to use something like storedPoint.X += (e.X - this.moveStartPoint.X); Take a look at this[^], for a complete example of moving things you have drawn. Henry Minute Do not read medical books! You could die of a misprint. - Mark Twain Girl: (staring) "Why do you need an icy cucumber?" “I want to report a fraud. The government is lying to us all.” ToolStrip Overflow button event satsumatable25-Jul-09 3:40 satsumatable 25-Jul-09 3:40  Hi, How to handle ToolStrip's Overflow button click event? Thanks Re: ToolStrip Overflow button event satsumatable25-Jul-09 4:01 satsumatable 25-Jul-09 4:01  OK, i found a way... there is an event called Overflowbutton.click., we have to include this delegate and handle it explicitly Huge amounts of ListView-Items in ListView. Performance? JackBeauregard25-Jul-09 2:55 JackBeauregard 25-Jul-09 2:55  Hi there, I am currently developing a CAN-Monitor (Controller Area Network). The messages are received event-driven. At the moment the display of the messages is done by a ListView. In the near future the number of received messages will grow up to ~ 600-800 messages per second. The messages (encapsulated in a specific object) are delivered to the view via event to a event-handler-method. Is there a alternative to the ListView which is more performant than the standard-one? Thanx in advance! Re: Huge amounts of ListView-Items in ListView. Performance? Eddy Vluggen25-Jul-09 3:17 Eddy Vluggen 25-Jul-09 3:17  The ListBox, but whatever control you use, as a user I can't read 600/800 messages per second. What's in the message that it needs to be displayed? If there's no specific information, I'd show a label saying (done msg x of y), and only show those who are "interesting" enough. Re: Huge amounts of ListView-Items in ListView. Performance? Jimmanuel25-Jul-09 3:20 Jimmanuel 25-Jul-09 3:20  Even if there was such a control, how would a person make sense of a list that was constantly adding messages at an average rate of 700/sec? That sounds like the definition of information overload to me; I'd be more concerned with reducing the amount of information inserted into the list rather than finding a better list control. Re: Huge amounts of ListView-Items in ListView. Performance? Adam Maras25-Jul-09 6:41 Adam Maras 25-Jul-09 6:41  If you absolutely must have a ListView with all of these messages, consider looking into the ListView's virtual mode. It might suit your task a little better. That solution aside, could you look into using a different user experience that's a little more streamlined for your data? Adam Maras | Software Developer Microsoft Certified Professional Developer Add Properties to user control [modified] gal00025-Jul-09 2:52 gal000 25-Jul-09 2:52  Hi, I've created a new user control. I want to add the property "SelectionColor" to it (like in RichTextBox), and then i wantto implement the functionality for the property. Someone have an idea how to do it? Thanks modified on Saturday, July 25, 2009 9:22 AM Re: Add Properties to user control Henry Minute25-Jul-09 3:06 Henry Minute 25-Jul-09 3:06  What is it that you are not sure of? How to add a property, or how to implement the functionality for the property once it is added? DO NOT reply to this post, edit your original to make this clear! Henry Minute Do not read medical books! You could die of a misprint. - Mark Twain Girl: (staring) "Why do you need an icy cucumber?" “I want to report a fraud. The government is lying to us all.” Re: Add Properties to user control SajjadZare25-Jul-09 9:14 SajjadZare 25-Jul-09 9:14  you should write code like this code in user control this code use for datagridview "RowHeaderVisible" property public bool RowHeaderVisibl { get { return rowHeaderVisiblee; }//get set { rowHeaderVisiblee = value; dataGridView1.RowHeadersVisible = rowHeaderVisiblee; }//set }//RowHeaderVisibl how to keep track the browser. msgreat25-Jul-09 2:03 msgreat 25-Jul-09 2:03  I want to create a c# win form app. It should just display a message box, whenever I am opening Iexplorer.exe. How to do this friends? GpuCV ? Mohammad Dayyan25-Jul-09 1:09 Mohammad Dayyan 25-Jul-09 1:09  Hi guys. Could we use GpuCV[^] in C# ? Thanks.

Last Visit: 31-Dec-99 18:00     Last Update: 3-May-24 5:57 Refresh ᐊ Prev1...4643464446454646464746484649465046514652 Next ᐅ

General    News    Suggestion    Question    Bug    Answer    Joke    Praise    Rant    Admin   

Use Ctrl+Left/Right to switch messages, Ctrl+Up/Down to switch threads, Ctrl+Shift+Left/Right to switch pages.