Trigger an event inside a property

Windows Forms General

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    - ListBox SelectedIndexChanged event I have a panel with listbox in it.In the panel there are and few other panels.When SelectedIndexChanged event is raised i want to show the appropriate panel. for example: private void listBox1_SelectedIndexChanged(object sender, EventArgs e) { switch (listBox1.SelectedIndex.ToString()) { case "0": //show panel1 break; case "1": //show panel2 break; //and so on } } How to do that Tag: Windows Forms General Trigger an event inside a property Windows Forms
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    - How to use IXMLDocument in C#? Hi. when i need to load a file asynchronous,in c# how to write it my program: IXMLDOMDocument rssDom= new DOMDocument(); rssDom.async = true; rssDom.onreadystatechange = // in javascript ,we write function(){;} but here rssDom.load(url); I tried delegate,but I got error message. Thanks. Tag: Windows Forms General Trigger an event inside a property Windows Forms
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    - MonoSpace fonts? There is no workaround, GDI+ only deals with TrueType fonts. RichTextBox is known to work with device fonts. Why is this a problem Tag: Windows Forms General Trigger an event inside a property Windows Forms
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    - Modified Capicom.dll deployment I have created a dll in c# using this class found on the PayPal developer board: http://www.pdncommunity.com/pdn/board/message board.id=ewp&message.id=17 using System; using System.Text; namespace com.paypal.demo { // Requires modified CAPICOM Interop assembly. See http://www.codeproject.com/dotnet/CapicomUTF8.asp. public class ButtonEncryption { private Encoding _encoding = Encoding.Default; private string _recipientPublicCertPath; private CAPICOM.Certificate _signerCert; private CAPICOM.Certificate _recipientCert; public ButtonEncryption() { } #region Properties /// <summary> /// Character encoding, e.g. UTF-8, Windows-1252 /// </summary> public string Charset { get { return _encoding.WebName; } set { if (value != null && value != "") { _encoding = Encoding.GetEncoding(value); } } } /// <summary> /// Path to the recipient's public certificate in PEM format /// </summary> public string RecipientPublicCertPath { get { return _recipientPublicCertPath; } set { _recipientPublicCertPath = value; _recipientCert = new CAPICOM.CertificateClass(); _recipientCert.Load(_recipientPublicCertPath, null, CAPICOM.CAPICOM_KEY_STORAGE_FLAG.CAPICOM_KEY_STORAGE_DEFAULT, CAPICOM.CAPICOM_KEY_LOCATION.CAPICOM_CURRENT_USER_KEY); } } #endregion /// <summary> /// /// </summary> /// <param name="signerPfxCertPath">File path to the signer's public certificate plus private key in PFX (P12) format</param> /// <param name="signerPfxCertPassword">Password for signer's private key</param> public void LoadSignerCredential(string signerPfxCertPath, string signerPfxCertPassword) { _signerCert = new CAPICOM.CertificateClass(); _signerCert.Load(signerPfxCertPath, signerPfxCertPassword, CAPICOM.CAPICOM_KEY_STORAGE_FLAG.CAPICOM_KEY_STORAGE_DEFAULT, CAPICOM.CAPICOM_KEY_LOCATION.CAPICOM_CURRENT_USER_KEY); } /// <summary> /// Sign a message and encrypt it for the recipient. /// </summary> /// <param name="clearText">Name value pairs must be separated by \n (vbLf or Chr(10)), for example "cmd=_xclick\nbusiness=..."</param> /// <returns></returns> public string SignAndEncrypt(string clearText) { string result = null; IntPtr bstr = UnicodeStringToBinaryString(clearText); string signed = Sign(bstr); string enveloped = Envelope(signed); result = FormatForTransport(enveloped); return result; } private string Sign(IntPtr bstr) { CAPICOM.ISigner signer = new CAPICOM.SignerClass(); signer.Certificate = _signerCert; CAPICOM.SignedData signed = new CAPICOM.SignedDataClass(); signed.set_Content(bstr); string result = signed.Sign(signer, false, CAPICOM.CAPICOM_ENCODING_TYPE.CAPICOM_ENCODE_BINARY); return result; } private string Envelope(string bstr) { CAPICOM.EnvelopedData enveloped = new CAPICOM.EnvelopedDataClass(); enveloped.Content = bstr; enveloped.Recipients.Add(_recipientCert); string result = enveloped.Encrypt(CAPICOM.CAPICOM_ENCODING_TYPE.CAPICOM_ENCODE_BINARY); return result; } private string FormatForTransport(string bstr) { const string PKCS7_HEADER = "-----BEGIN PKCS7-----"; const string PKCS7_FOOTER = "-----END PKCS7-----"; CAPICOM.Utilities utils = new CAPICOM.UtilitiesClass(); string base64 = utils.Base64Encode(bstr); StringBuilder formatted = new StringBuilder(); formatted.Append(PKCS7_HEADER); formatted.Append(base64.Replace("\r\n", "")); formatted.Append(PKCS7_FOOTER); return formatted.ToString(); } private IntPtr UnicodeStringToBinaryString(string ustr) { byte[] bytes = _encoding.GetBytes(ustr); CAPICOM.Utilities utils = new CAPICOM.UtilitiesClass(); IntPtr bstr = utils.ByteArrayToBinaryString(bytes); return bstr; } } } It needs a modified capicom.dll found at the code project here: http://www.codeproject.com/dotnet/CapicomUTF8.asp Now I use my dll in a c++ program. But when it comes time to run code from the dll, the program throws an exception when its on a computer other than my development system. Any ideas on what is needed to deploy this modified capicom.dll I've tried it in the System32 directory and the application directory . And it always throws the exception that seems to indicate it can't find the capicom.dll. And I tried registering the capicom.dll but regsvr32 doesn't recognize it as registerable Here's the error: Retrieving the COM class factory for component with CLSID P9171C115-7DD9-46BA-B1E6-OED50AFFC1B8} failed due to the following error: 80040154 Tag: Windows Forms General Trigger an event inside a property Windows Forms
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    - Translating From C# to VB Hi Oric.CQ I use this free code translation for .NET http://www.carlosag.net/Tools/CodeTranslator/Default.aspx Best Regards, Simao (portugal) landsimao.hotmail.com http://weblogs.pontonetpt.com/landsimao Tag: Windows Forms General Trigger an event inside a property Windows Forms
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    - Inherited control hide property in designer Hi everyone, I'm not sure there is a way to do what I want but figure it is better to ask the question. I've inherited the ComboBox control and want to adjust the way it behaves. Basically it will show the DropDown when the control is entered/has focus and will restrict what the user types to the list of items. As such I don't want the designer to be able to adjust properties such as AutoCompleteMode and AutoCompleteSource. I've read on the net that I should just be able to either shadow or overload this property, set it to protected and add the <Browsable(false)> attribute, however this does not work, the AutoCompleteMode property remains in the designer (I also read on the net that the property viewer uses reflection to determine what properties to show, so I guess it sees the parent property as Browsable and therefore displays it). The other solution I saw on the net is to create a custom designer for the control, however as ComboBox has its own ComboBoxDesigner which is not Public, I cannot inherit and override methods to prevent certain properties from being displayed. At present I've shadowed the properties, kept them Public, however the Set method does nothing. In this case the property appears in the designer however it cannot be set to anything other than the default value. This will work, however it just seems wrong to have a property listed that cannot be changed. I hope this makes some sense and if anyone has any suggestions please let me know. Thanks, Mark. Tag: Windows Forms General Trigger an event inside a property Windows Forms
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    - Data Source Configuration Wizard - Multi column primary key Hi, Could you try to change the name of the " FK__PROPERTYGROUPSENTENCE-PROPERTYGROUP" foreign key to something shorter and without double underscores and without hyphen I'm just wondering if this doesn't fool the designer. Try a name such as "FKTest" just to see. Luc Tag: Windows Forms General Trigger an event inside a property Windows Forms
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    - Application with different images each time. Hi. I wanted to know if/how to create a setup project with an image and xml file that's outside the setup file. My objective here is to avoid having to re-compile with the image and xml file. I was thinking that iexpress could package three files: setup.exe, image.gif, and link.xml. This way, the setup.exe file would remain the same all the time, and all I would have to do is replace the image.gif and link.xml and re-package with iExpress. i.e. For the first 100 users, I want a .gif that says "You are one of the first 100 users. Click here to claim your prize". The image will be from the \images\ folder of the application and the images hyperlink will be grabbed from the xml file. Then for the next batch, I'd like a different image and different link and i'd like to ONLY swap the image.gif and link.xml files and re-package using iexpress (as opposed to re-compiling the whole project). Any suggestions, comments, etc would be great. Thanks in advance. - Jon Tag: Windows Forms General Trigger an event inside a property Windows Forms
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    - Windows Control in IE, Problem Accessing Database, Strong Name doesn't seem to work I am developing a Windows Control for distribution via IE. The control accesses a database. In troubleshooting, I built the control with a button. The control comes up fine but when the button is clicked to access the database, I error on "Application attempted to perform an operation not allowed by security policy." I traced this to a strong name problem, but can't get the strong name to work in the control - it does work in a Windows application. So, taking the database access piece out of the equation, the full control code is as follows: Imports System.Reflection <Assembly: AssemblyKeyFileAttribute( "C:\Share\sgkey.snk" )> Public Class UserControl1 Private Sub UserControl1_Load( ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase .Load End Sub End Class When the line that begins <Assembly... is commented out I can see the control in IE. When the line is left in, the control does not display. I created the key file using the sn utility and located it as shown. The control comes up fine when I drop it onto a Windows form but again, it does not display in IE (I get the icon for a missing object). The HTML code that goes with the Control code above is: < object classid ="PlainControl.dll#PlainControl.UserControl1" width ="100%" height ="100%" padding ="0" margins ="0"> </ object > The Control project is named Plain Control. Lastly, I am bringing the control up directly from the Visual Studio environment. I mention that just in case it may be havinging an influence. Thanks for any help, Blaise Tag: Windows Forms General Trigger an event inside a property Windows Forms
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    - Settings WindowState Maximized makes load event fail Hi, As per MSDN, Form.Load Event says - Occurs before a form is displayed for the first time. What I observed - If I set the WindowState property of the form to Maximized, the load event does not behave as expected. The form is shown (visible property set to true), as soon as the the function specified for load event is called. If I don't set WindowState property, the form is displayed after the complete execution of "load event associated function". My question - Is there a workaround for handling this Thanks in advance. With regards, Tag: Windows Forms General Trigger an event inside a property Windows Forms
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    - How to get the date form the datetimepicker to textbox private void dateTimePicker1_ValueChanged( object sender, EventArgs e) { DateTime date = this .dateTimePicker1.Value; this .textBox1.Text = date.ToString( "yyyy-mm-dd" ); } Tag: Windows Forms General Trigger an event inside a property Windows Forms
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    - Form flickering while switching between MDI children I guess no one at MS has any solution for this MDI form flickering problem. This issue has been out for a few years now and there seems to have been no solution provided by MS. This is somewhat frustrating when using VS2005 and following their examples to cread a simple MDI form application. When you have multiple MDI children forms open and their size is maximized you will see considerable flickering when switching between the children. What is the solution What is a viable work around because I have practically scoured throughout Google trying to find any patch fix but none have worked. Tag: Windows Forms General Trigger an event inside a property Windows Forms
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    - Default properties of windows forms controls Hi Vincent I think those default properties is included in control class code, so we can't change it unless we change control's code. I think you can extend your own control form base control and set its defult properties follow is some page hope it help you http://msdn2.microsoft.com/en-us/library/az06zx4y(VS.80).aspx Tag: Windows Forms General Trigger an event inside a property Windows Forms
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    - Conditional Installation File Hello, I create a Windows Application (C# 2.0) with Access database. I want to install my database only if it doen't exists. When I uninstall my application, I don't want to uninstall my database ! Thanks, Damien, Tag: Windows Forms General Trigger an event inside a property Windows Forms
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    - AutoScaleMode Examples You can use the Screen Size to be the base of your controls' sizes. Create a XFactor and YFactor variable to assing the sizes depending on the size of the screen. For instance: Code Snippet int FactorX = Screen .PrimaryScreen.WorkingArea.Width / 1000; int FactorY = Screen .PrimaryScreen.WorkingArea.Height / 1000; myButton.Width *= FactorX; myButton.Height *= FactorY; You should experiment with the numbers to get the desired effect. Make different divisions and multiplications to see which suits you better and which is better for different resolutions. Hope this helps you getting started. Tag: Windows Forms General Trigger an event inside a property Windows Forms
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    - Setting null value to datagridviewtextboxcolumn.DefaultCellStyle.NullValue What is the difference between setting datagridviewtextboxcolumn.DefaultCellStyle.NullValue = null and datagridviewtextboxcolumn..DefaultCellStyle.NullValue = System.DBNull.Value Tag: Windows Forms General Trigger an event inside a property Windows Forms
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    - Hide the node in Treeview control "No" is quite explicit in English. There's no "maybe". Perhaps where you live, people don't like to say "NO!". We do here when we try to talk about what's possible. It leaves little doubt, it's black vs white, it's 1 vs 0. It's a binary answer, "no" really means "NO!" here. I suppose you're going to wait for a maybe. Tag: Windows Forms General Trigger an event inside a property Windows Forms
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    - datagridview with dateedit column HI Zhi-Xin Ye , my application crashes after selecting a date from datetime ctrl i'm getting dataerror says cannot convert string to datetime something. raising system.format exception . I like the above piece of code. it's really cool and simple. Please help me with this. thanks venp-- Tag: Windows Forms General Trigger an event inside a property Windows Forms
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    - Can't Add Installation Cultures in "\BootStrapper\Engine\<Culture>" Hi, We have a setup project using the "Setup & Deployment --> Setup " project type and we need to deploy the application into a "Dutch" (nl) customer base and so need to build a Dutch version of the installer. In my "Project Properties" window for the installer I get a list of "localization" items as follows... [Neutral Chinese (Traditional) Chinese (Simplified) English (United States) French German Italian Japanese Korean Portugese (Brazil) Russian Spanis (Spain) (International Sort) ] All of the above items seem to correspond to specific language sub-folders in my folder: - "C:\Program Files\Microsoft Visual Studio 8\SDK\v2.0\BootStrapper\Engine\" The trouble is there's no Dutch (nl) folder. I can build all of the above languages with no trouble and get the installer to run in the language specified - brilliant. I'm thinking I can simply add a new language to the folder and build it in Dutch. NOT SO ! My question is... When I create a new Dutch folder (nl) in this location, - why do I still only get the original (above) set of languages available in my set-up project ... I've closed the project & re-opened it, I've even re-booted and created a brand new project for testing - still no Dutch option. Is there something more I need to do in order to add an extra language to my list of available ones ... I've changed the settings in the copied XML file so it reads... <String Name="Culture">nl</String> Cheers - Paul. Tag: Windows Forms General Trigger an event inside a property Windows Forms
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    - FillRectangle Sorry I've gone and given you the wrong event, not sure where I've come up with "OnDraw", it's the Paint event you want to look for. The code you've already got should work just fine in a handler for the Control.Paint event. The PaintEventHandler's second param is a PaintEventArgs which contains the Graphics context for the control. Use that graphics context and paint away to your hearts content. Something like: private void MyPaintHandler(object sender, System.Windows.Forms.PaintEventArgs e) { e.Graphics.FillRectangle(.....); } I know that's in C#, but same sort of thing in VB. Tag: Windows Forms General Trigger an event inside a property Windows Forms
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    - Image blocker Hi all! I'm trying to implement an image blocker utility to my web browser. First version of that tool was made like this: Find all the <img></img> things from HTML code Remove all of them Generate a new site But all in all I think that it's not so good that I first thought, so is there any other way to block those images when loading the web page. I'm trying to find a simple solution, but all help is welcome! Thanks, Timo Salomaki Tag: Windows Forms General Trigger an event inside a property Windows Forms
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    - ComboBox Font Thanks a lot for the suggestions. The problem I am facing is that I have two ComboBoxes, comboBox1 and comboBox2. When the user selects something from comboBox1 then comboBox2 is automatically populated. I need to set the font style of this automatic selection as italic. It will be great if someone can guide me ho wto do this. Tag: Windows Forms General Trigger an event inside a property Windows Forms
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    - Embedding Open File dialog Hi, i want to add an open file dialog control to my program. But want it to be seen always, not close after DialogResult. Is this possible Tag: Windows Forms General Trigger an event inside a property Windows Forms
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    - VS 2003 Create Setup Project i 've created a c# application and i need to deploy it i used setup project to generate .msi file but i meed to make some options like if the application is installed remove or repair and to make shortcut in the program files to uninstall and other options is there any arrticle for this issu Tag: Windows Forms General Trigger an event inside a property Windows Forms
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    - Completely confused - .ico .bmp nightmares Ok we have a sophisticated app, and it works fine, lot of code, so we know how to develop but.... Since the start, the issue of icons and toolbar button images has been a drag, we have muddled thorugh with an "It'll do for now" attitude and this has been OK, I mean functionally were fine. I am now completely confused, by the Forms Designer, by icons/bitmaps, transparency, alpha-channels etc. All I ever wanted to do was use a library of various Windows icon files for 1. TreeView (small) 2. ListView (large/small icons) 3. Toolbar buttons (small) It started off with the assumption that I could use a .ico file (that contained a 16x16 image at least) as the source for a toolbar button image, but this is immensely confusing now, it seems that one MUST only use .bmp files for toolbar buttons, but I am not sure. Why cant I simply use .ico file in my project and have VS 2005 "understand" these (Is there not some way of creating two app-wide image lists in the designer, and then have EVERYTHING refer to these ) There is also the issue of resources, these have become a mess (we have a project resource file full of mixed up ico and bm files and several form level resources). Adding to the confusion, is the fact that the various window controls (tree, image list, toolbars etc) refer to Image or Icon objects and these are created (automatically ) when we add .ico files etc to the project. I have now completely lost all understanding, because I opened a .ico file (that has several folder images, various sizes and various color resolutions) exported the 16x16 32-bit color image to a .bmp file. I then added that as a resource and then set a toolbar button to be this image - it has a dark surround, clearly something to do with transparency or alpha channel etc. Even worse, if I attempt to specify a .ico file as image source for a toolbar button, it gets crazy and IDE designer can even fail. So is there a book or detailed article that explains how one can (in VS 2005 for XP/Vista) 1. Setup resources for the above usage 2. Create the needed .bmp from .ico 3. Avoid the hassle of fiddling with background/transparency etc 4. Help us set up a simple working policy for managing this with less effort. I'd love to remove all icons/images from the project and do all this part again, neatly and simply. It's a mess and my attempts to simplify and tidy up fail becaue the whole issue is poorl explained in ALL the .NET books I have (even all the WinForms books just gloss over this). Any guidance, pointers or books that REALLY delve deeply into this apsect of .NET development will be greatly appreciated. Thx H Tag: Windows Forms General Trigger an event inside a property Windows Forms
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    - Listview with Imagelist This works for me when using large and small image list listView1.SmallImageList = null ; listView1.LargeImageList = null ; listView1.StateImageList = null ; ///listView1.Alignment = ListViewAlignment.SnapToGrid; Needed after first time listView1.Alignment = ListViewAlignment.SnapToGrid; The only problem is, if you want to put the image list back in and then remove it again, you have to change the Alignment to something else then back to ListViewAlignment.SnapToGrid after you set one of the ListView's ImageLists to null. Jason Tag: Windows Forms General Trigger an event inside a property Windows Forms
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    - the Design View of Datagridview in visual studio The code in InitializeComponent is automattically generated by the ide. You should not put your code in there. I would put it in forms constructor instead. Code Snippet public Form1() { InitializeComponent(); // Your code should go here } Tag: Windows Forms General Trigger an event inside a property Windows Forms
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    - Change <TAB> to <ENTER> to skip another control Hi, How to use <ENTER> instead of <TAB> to switch between components into form My development is in C#. Thanks Tag: Windows Forms General Trigger an event inside a property Windows Forms
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    - Form Will Not Minimize Sometimes Well I have figured out a couple things. I'm definitally sure now that the System.Windows.Forms.WebBrowser control is the cause of the problem. It appears that the actual website the control is navigated to is trying to set focus to a textbox or something, which I believe is making the form re-appear. So if the WebBrowser control is blank, hidden, or navigated to a website that is problem free, such as "google.com", then I do not have the problem. But if I am navigated to www.mcmaster.com then I do have the problem. I'm sure there are other websites that might cause similar behavior. So to re-produce the problem, simply create a new WindowsForms project, add the WebBrowser control and set its URL to www.mcmaster.com . You will see that you will not be able to minimize the form more than once. Tag: Windows Forms General Trigger an event inside a property Windows Forms
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    - Custom Form Desinging You need to intercept WM_PAINT message using OnPaint method. here's another thread on this subject: http://forums.microsoft.com/MSDN/ShowPost.aspx PostID=560098&SiteID=1 Tag: Windows Forms General Trigger an event inside a property Windows Forms
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    - Accessors in C# Is the compiler getting confused with another version of Report_Viewer Try creating it using the full namespace. Tag: Windows Forms General Trigger an event inside a property Windows Forms
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    - Memory Leak? That is what I said, It should go up only the first time it is opened and then it will not go down, that is why when like you said "close the about form" the memory won't go down. The Dispose() method doesn't get rid of the native code JITed into Native Code from memory for the Dialog Form. But in the DataSet case you have to call the method Dispose() to free the memory used by the dataset. And this will not free the JITed code for the DataSet class. But if even so the memory footprint is continuing going up, then something I don't understand is going on behind the scenes. The code for the DataSet is JITed only once. You can get rid of the data through Disposed(). Tag: Windows Forms General Trigger an event inside a property Windows Forms

hanseh

Hi.. I have a class that has a property textstyle. The text style property as it`s own property mainly a Color and font, Text style class is just an independent class that i can used anytime as a tool and it does not have a direct link to any of my classes so i cant put my delegate calls into it. what cna i do to check the event of the font and color changes so that everytime it is edited in the grid the usercontrol will be repainted.thanks

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Re: Windows Forms General Trigger an event inside a property

Cameron Kloot

every time u have a method that edits the property repaint the grid control right after editing it.

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Re: Windows Forms General Trigger an event inside a property

Adam D. Turner

Implement an interface and instantiate your class in the control.event.

Adam

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Re: Windows Forms General Trigger an event inside a property

hanseh

thanks adam. I used the delegates to trigger the refresh method of the user control.

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