keyboard capture

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- Previous
  - 1
    - .NET Application does not release memory until minimized Hello, We have a local .NET application running against a local MSDE database. When the application is checking out data from the local MSDE SQL Server the procesor spikes, and the memory continues to grow. Once the application data is loaded from SQL into memory the application stays peaked at 300+MB. It will never reduce from this size (even over 20 minutes or so) until the application is minimized and then maximized. At this point the application resets to it's initial memory size and the available memory slowly creeps back to a normal level. This is causing all sorts of miscellaneous program errors because memory is tied up and not being freed again. Any ideas on how to get the .NET Applicaition to give back the memory it is not using? We're using .NET Framework 1.1, Visual Studio VB.NET 2003, MSDE 2000 with SP3a, on Windows XP SP1 and Windows 2000 Professional SP3 (same behavior on both Operating Systems). Thanks, Bria Tag: keyboard capture Tag: 96304
  - 2
    - Socket Broadcasting with Multiple Adapters I'm getting some weirdness when sending out broadcasts on a system with two adapters. The adapters are configured with IP addresses on seperate subnets. Packets get sent out on each interface, but the source addresses (as seen from a packet sniffer) on both packets is the IP address for adapter #1. This creates a problem when clients on adapter #2's network try to respond because they can't reach the source address on adapter #1's network. Here's some code that illustrates the problem: public static void Main(string[] args) { byte[] bytes = Encoding.UTF8.GetBytes("Testing broadcast..."); IPEndPoint endpoint = new IPEndPoint(IPAddress.Broadcast, 10485); Socket socket = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp); socket.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.Broadcast, 1); socket.SendTo(bytes, endpoint); } My question is, am I doing something wrong? Or is this expected (or even desired) behavior? If so, any ideas how I could make it work correctly? Tag: keyboard capture Tag: 96302
  - 3
    - XSD.EXE Array Generation XSD.EXE generates typed arrays, which are good if you know how many elements you will have, but not so good for unbounded arrays. I am looking for the correct code solution. Currently I have this, which seems uninspired: <code> public class ReportPages { /// <remarks/> [System.Xml.Serialization.XmlElementAttribute("page")] private ReportPage[] page; public ArrayList pages; public void doSerialize() { page = (ReportPage[])pages.ToArray(typeof(ReportPage)); } } </code> I also understand that this relies on the consumer of the code to only add objects of the type "ReportPage". Any help? Tag: keyboard capture Tag: 96299
  - 4
    - Trying to get my head around async calls... Here is some pseudo code public class MyClass1 { ... public void StartSomething() { myDelegate.BeginSomething(new AsyncCallback(XXX), YYY); } ... } Should the method XXX be in a seperate class/object than MyClass1 like... public class MyClass2 { public void MethodToBeUsedAsTheAsyncCallback() { } } Kyle! Tag: keyboard capture Tag: 96294
  - 5
    - Terminal Service and Allow service to interact with desktop Hello, I have developed a Windows Service using C# that interacts with an external application. The external application is used as monitor for the Windows service and is launched from the service using "Start" method of the Process class. The external application is a C# window form with a "system tray" icon. On XP, 2000, and even 2003, everything works great and the icon is displayed in the system tray... But when the user is logged into terminal services, the icon is not displayed in the system tray. We really need this icon to display in the system tray in all cases, but do not have a clue on how to get it to display while logged in under "Terminal Services"... Does anyone know what needs to be done in order to get this to work? We really appreciate any help you can give. Thank you Tag: keyboard capture Tag: 96290
  - 6
    - Programmatically accessing and retrieving data from an SSL web pag Using VB.net I want to create an windows forms application that passes credentials to an SSL enabled web site and retrieves the default web page. Then I want to parse the retrieved web page and then FTP files from the server. Parsing the data is not a problem. However, I have no clue on how to start any of the other processes. Tag: keyboard capture Tag: 96288
  - 7
    - MS Naming standard question Hello We wish to follow the naming standard from Microsoft, we found the Naming guideliness at http://msdn.microsoft.com/library/default.asp?url=/library/en-us/cpgenref/html/cpconnamingguidelines.asp but we can't find the standard for the UI controls (which one it is: NameTextBox or textBoxName or txtName) Can you indicate us the right link on the MS site? Thank you, Alina Tag: keyboard capture Tag: 96284
  - 8
    - monthCalendar DateChanged issue - documented behaviour? I've searched for this problem but haven't found any posts on it - hope this isn't a duplicate... I had a strange event occur earlier today and have isolated the 'problem'. In its simplest form I have a monthCalendar control and textBox control on a form, and have added an event handler that clears the text in the textBox when the DateChanged event is fired. The problem is that I find if text is entered in the textBox, after just under 2 minutes (on my system) the DateChanged event is apparently fired (even if no activity is occurring) and the textBox will be cleared. To isolate this I went back to the DateChanged event handler example in the MS docs and stripped the code down (also changing some of the values for sizes and alignments). Here's what I have: using System; using System.Drawing; using System.Windows.Forms; public class Form1 : System.Windows.Forms.Form { private System.Windows.Forms.MonthCalendar monthCalendar1; private System.Windows.Forms.TextBox textBox1; [STAThread] static void Main() { Application.Run(new Form1()); } public Form1() { this.textBox1 = new System.Windows.Forms.TextBox(); this.textBox1.Location = new System.Drawing.Point(248, 16); this.textBox1.Multiline = true; this.textBox1.Size = new System.Drawing.Size(224, 32); // Create the calendar. this.monthCalendar1 = new System.Windows.Forms.MonthCalendar(); // Set the calendar location. this.monthCalendar1.Location = new System.Drawing.Point(47, 16); this.monthCalendar1.DateChanged += new System.Windows.Forms.DateRangeEventHandler(this.monthCalendar1_DateChanged); // Set up how the form should be displayed and add the controls to the form. this.ClientSize = new System.Drawing.Size(500, 266); this.Controls.AddRange(new System.Windows.Forms.Control[] {this.textBox1, this.monthCalendar1}); this.Text = "Month Calendar Example"; } private void monthCalendar1_DateChanged(object sender, System.Windows.Forms.DateRangeEventArgs e) { // If the date changes, clear the text box this.textBox1.Text = ""; } } Is this behaviour documented anywhere? I assume that I'm merely using the wrong "tool" and should be monitoring a different event or clearing the textbox differently, but this still seems very odd to me. I initially set this up with Visual Studio 2005 Beta 2 but tested the above in SharpDevelop. Any insight would be appreciated. -- Jeff Tag: keyboard capture Tag: 96283
  - 9
    - Crystal Report external formatting Hi, I'm working on a project of creating reports using MS Visual Studio 2003 and Crystal 10. An XML with all the data will be passed to the program for generating the report. Since we're applying this to quite a few clients, I'm wondering if there's a way to have an external formatting file (like CSS) that we can load to the report at runtime to customize the fonts and colors of the fields? I know that you can setup the CSS Class for viewing the report through the web. But is there any other method that doesn't go thru the web? Thanks for your help!! =) Tag: keyboard capture Tag: 96282
  - 10
    - TextBox.paint not work? TextBox has an event named paint, however, it seems not work, right? Microsoft off it? or I am wrong, it does work? ---Frank Tag: keyboard capture Tag: 96281
  - 11
    - Memory Management I have an .NET application that calls a DLL compiled with a fortran compiler. Users are having a problem that the fortran DLL complains that is unable to allocate memory when the arrays it is using are too big. After reading around I decided that increasing the MaxWorkingSet for my process may help. However, the Fortran DLL fails (when it tries to allocate memory for an array containing abotu 900Mb of data) before it gets to this MaxWorkingSet value (about 1400Mb). So, to try and get an understanding of this I tried to set the MaxWorkignSet to about 500Mb. However, the fortran DLL is quite happily able to allocate memory for an array that contains several 100Mb over this value. During this, looking in the task manager I aslo see the peak memory usage has also gone well over the MaxWorkingSet value. Can someone explain to me what MaxWorkignSet really means? And is there anyway I can get windows to let the fortran DLL allocate more memory? Since someone is sure to ask, the fortran DLL contains a subroutine that implements a mathematical model and I have now control over its desgn or how much memory it tries to allocate. TIA Tag: keyboard capture Tag: 96280
  - 12
    - CDO Read Receipt Hello, I frequently use the following code on my various sites: <% Set bc = Server.CreateObject("MSWC.BrowserType") Set objMessage = CreateObject("CDO.Message") objMessage.Subject = "Invite from domain.com" objMessage.Sender = "Administrator@domain.com" objMessage.To = "user@domain.com" objMessage.Bcc = "" objMessage.Cc = "" objMessage.HTMLBody ="HTML body here" objMessage.Send %> Is there any way for the email generated to "request a read receipt"? I have had a look on Google, but I am not able to find what I need - maybe I am not searching for the right thing, Server is Windows Server 2003 Web Edition, running IIS 6. Regards, Gary. Tag: keyboard capture Tag: 96267
  - 13
    - Control Playback AND Recording Volume Controls In my C#-Application I want to control the playback AND the microphone volume. And if somebody changes the values in the system volume control dialog, my application should also refresh its values. I know that I have to use the winmm.dll and PInvoke but I get a lot of problems with the recording volume control (the microphone). Tag: keyboard capture Tag: 96266
  - 14
    - System.Text.RegularExpressions Hi, I want to do the following: "Pete jan jan john jan mark" --> "Pete B jan john jan mark" So I would like to wite a RegEx that would replace the first occurence of the matched string (in this case replacing "jan" by "B") .replace replaces all occurences, but maybe a smart regex would solve that, or let them find all occurences and use MatchEvaluator to only replace the first and copy all the others back? Any good Ideas? Best Regards, Jeroen Vandezande. Tag: keyboard capture Tag: 96265
  - 15
    - Optional values? Hi, In my C# applicaiton, I use ADOX to reach and check the user permissions in my Access database. To do this, there is a function named "GetPermissions". This function gets 3 arguments where the 3rd one is optional. But the C# compiler doesn't accept giving only 2 parameters and whatever I put into the third one (null, "", etc.) I get an exception. I want to ask whether anybody knows how to handle those optional parameters in C#? Thanks in advance... Regards, Özden Tag: keyboard capture Tag: 96258
  - 16
    - FileSystemFileWatcher I write an application. When one file is created in the specified folder, it runs one method (using SystemFileWatcher). I test my app carefully. But my customer report that: When copy file to that folder (that folder is empty) , that method doesn't run. I read file log, and I reliaze that: event "OnCreated" of FileSystemWatcher isn't raised. Besides the reason is coping overwrite file (will not fire OnCreated event), are there any other reasons ? Thanks a lot !!! Tag: keyboard capture Tag: 96255
  - 17
    - System.Net.Sockets.Socket Memory Leak FYI Every time I call the .Poll method on my listening tcp streaming socket I get an 8k memory hit that never cleans up. This is using VS 2k3 framework 1.1 Tag: keyboard capture Tag: 96249
  - 18
    - Need tab and Return key for IE Hosted UserControl I am writting an IE Hosted UserControl, which has a TextBox for accept input. In the textbox, I use OnKeyDown handler to check the user pressed key. Which work fine under WinForm environment. However, under IE with form environment, the Key tab and return are took by IE. How can I get the Key tab and return in textbox under IE environment? Thanks. ---Frank Tag: keyboard capture Tag: 96246
  - 19
    - About IE Hosted UserControl auto download I have just finished an IE Hosted UserControl named MyUserControl, which can automatically download from IIS site if I assigned the URL to http://MyComputer/MyFolder/index.htm. However, if I assigned the URL to http://www.MyCompany.com/MyFolder/index.htm or http://localhost/MyFolder/index.htm, IE will not automatically download the MyUserControl from iis. Where three of MyComputer, www.MyCompany.com, and localhost means same machine. Why? They are same machine, why only a shortly computer name can download, but long site name and localhost cannot download? Because of security issue? Thanks. --Frank Tag: keyboard capture Tag: 96244
  - 20
    - Calling WebService from Windows App causes Windows App to never qu I created a WebService on the order of a WindowsUpdate type of functionality. I call the following routine, and once I've done that, my Windows Application stays around as a running process forever (or until I kill it with task manager). This is very odd. The application does not appear to hang, it seems to work perfectly. It even appears to exit, but looking in task manager you can see that it stays in memory. There must be something I have to do to properly dispose of my web service, but I'm not sure what it is. Can anyone help? (Yes, I call the dispose method, but that doesn't appear to do anything). public string[] getVersions() { FileVersionInfo myFileVersionInfo; string[] tempList; string fileName; string[] dirs = Directory.GetFiles("http:\\xxxxx\\modules"); tempList = new string[dirs.Length]; for(int x = 0; x < dirs.Length; x++) { myFileVersionInfo = FileVersionInfo.GetVersionInfo(dirs[x]); fileName = dirs[x].Substring(dirs[x].LastIndexOf("\\")+1); tempList[x] = fileName + "," + myFileVersionInfo.FileMajorPart + "." + myFileVersionInfo.FileMinorPart + " Build " + myFileVersionInfo.FileBuildPart + "." + myFileVersionInfo.FilePrivatePart; } return tempList; } Tag: keyboard capture Tag: 96239
  - 21
    - XMLHTTP equivelent I need post some simple form data and get some simple data back. I used XMLHTTP in VB6 and works great. How can I do the same thing in .NET. The most important thing for me is that I want to be able to communicate AS LONG AS the browser (IE) can communicate. I do NOT want set the proxy server because my app is distribute to unknown users. Thanks John Tag: keyboard capture Tag: 96229
  - 22
    - C#2.0 Form to COM object? I have a standalone app created in C# that is used to browse a database of archived documents called DocDB. We have some older legacy code written in Delphi that we wish to enhance with the DocDB's functionality. My idea was to give DocDB methods for controlling it from a seperate process via COM (much like Word for example, but with only a few public methods) I have defined public methods in my forms based class, I have used an SNK file, I successfully installed it into the GAC and run regasm. I have also created a public interface for the few methods I need. But no matter what I have done, the TLB that I create never exposes the public methods when imported into my legacy app. The code looks something like this (using C# 2.0): namespace DocsDB { [Guid("3100EBCE-1E40-500b-A247=AD-C777D72BB2ED")] public interface IDocsDBUI { void ViewDocsForLoan(int loan); void IsVisible(bool visible); void Quit(); } [Guid("AA218A41-ED34-5f4e-95C1=AD-0F1DB0402AD9")] [ProgId("DocsDB.App")] [ClassInterface(ClassInterface=ADType.AutoDual)] public partial class frmMain : Form, IDocsDBUI { public frmMain() { InitializeComponent(); } public void IsVisible(bool visible) { this.Visible =3D visible; } public void Quit() { this.Close(); } public void ViewDocsForLoan(int loan) { // do something here } } } Can someone tell me what I might be doing wrong? A small working example would be very much appreciated. Tag: keyboard capture Tag: 96227
  - 23
    - Tone generation Hi! Does someon know how to generate a sinusoidal tone? Thanks in advance! Tag: keyboard capture Tag: 96222
  - 24
    - Catch printer error Hi to all. How can I catch the printer errors? Can I have a confirmation that the printer has effectively printed the pages? I would like to intercept all error related to the printer, for example missing paper or other failure events. Thanks, Pino. Tag: keyboard capture Tag: 96220
  - 25
    - Replacement for COM Componenet Categories Hi, We are re-writing (in .NET) an application that makes heavy use of COM component categeories. The basic idea is to give the user a drop-down of objects from a particular category that are installed on their machine. This was done in COM by using COM's component category manager. Is there anything similar in .NET? Thanks, Steve Tag: keyboard capture Tag: 96217
- Next
  - 1
    - when is hashcode used? Hello All, I have been facing this bizarre problem within a combobox having a list of UK postcodes. When I assign the SelectedItem propoerty of the combobox, a completely different item was actually selected in the combobox. I broke into the code at the assignment statement and then looked at the values for different items in the watch window. It looked something like this : postcodeObj : EH11 1LQ comboBox1.SelectedIndex = -1 (nothing currently selected) comboBox1.Items.IndexOf(postcodeObj) : 1614 comboBox1.Items[1614].ToString() : EH11 1LA (something different to what i am intending to set as selected item) I also found out that my item was at the location 1621 in the combobox items. The combobox is no sorted, and I couldn't figure out what was going wrong here, till I added 2 more things in the watch window comboBox1.Items[1614].GetHashCode( ) comboBox1.Items[1621].GetHashCode( ) These 2 values appeared to be same, Now I remember that I have overriden the GetHashCode() method in my postcode object to return a hashcode, it creates a hashcode based on the postcode string and one more attribute. (XOR the number and the hashcode of the string) My question is, Is hashcode used internally by the 'SelectedItem' set method? Is there any way for me to get round this problem? I have the postcode strings and a unique number, Can I generate a unique hashcode from this combination? I don't want the number to be my hashcode. TIA, --Saurabh Tag: keyboard capture Tag: 96215
  - 2
    - RST packet, TCP session does anyone know of a way to set TCP control flags (specifically RST) on existing socket with active IPv4/TCP connection SetSocketOption allows for urgent flag but not RST? For that matter, set TCP_WAIT to 0 (please don't post about TCP_WAIT being there for a reason, I know all about it and it is not applicable in my case). Tag: keyboard capture Tag: 96214
  - 3
    - RST packet / TCP session. Tag: keyboard capture Tag: 96212
  - 4
    - intrinsic objects of .net What are intrinsic objects of .net is used in the application? thx Tag: keyboard capture Tag: 96204
  - 5
    - dataview schema How do you read the schema of a dataview? I have a could of SQL stored procedures that are getting read into a dataview and I need to know what the strucutres are so they can be displayed to the screen properly. Thanks. -Rob T. Tag: keyboard capture Tag: 96202
  - 6
    - Reflection: accessing member of given object Hi, I have trouble finding info on the following: I have an object myDataAccessObject that contains heaps of SQLDataAdapters and derivatives thereof. These are auto-generated for me by VS. I want to be able to call the update-method on all of these (in effect doing a database-dump) with myDataSet as input (since that's where my data is). now I *could* put all the adapters into a list and loop through them, calling the update method, but that's not pretty and I will have to manage that list as the DB expands so I don't want to do that. basicly I want to: -get all sqladapters from myObject -call "Update" with parameter myDataSet on all of them that shouldn't be so hard, yet I am stuck and am finding no docs on it. yours Andreas Knudsen Tag: keyboard capture Tag: 96195
  - 7
    - Please help me to create DLL in Visual Basic .net 2003 This is a multi-part message in MIME format. ------=_NextPart_000_0047_01C554A7.538146E0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Hi, I am new in Visual Basic .net. I did not find any option to create DLL = or ActiveX module. Please help me to create. Thanks in Advance, Ajith ------=_NextPart_000_0047_01C554A7.538146E0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <HTML><HEAD> <META http-equiv=3DContent-Type content=3D"text/html; = charset=3Diso-8859-1"> <META content=3D"MSHTML 6.00.2900.2627" name=3DGENERATOR> <STYLE></STYLE> </HEAD> <BODY> <DIV><FONT face=3DArial color=3D#0000ff size=3D2></FONT><FONT = face=3DArial color=3D#0000ff=20 size=3D2> <DIV>Hi,</DIV> <DIV> </DIV> <DIV> I am new in Visual Basic .net. I did not find any option to = create=20 DLL or ActiveX module. Please help me to create.</DIV> <DIV> </DIV> <DIV>Thanks in Advance,</DIV> <DIV> </DIV> <DIV>Ajith</DIV></FONT></DIV></BODY></HTML> ------=_NextPart_000_0047_01C554A7.538146E0-- Tag: keyboard capture Tag: 96192
  - 8
    - C#, Getting list of logged on Terminal Service Users Hello, I am searching for a way to retrieve the list of currently logged on terminal server users. Not only do I have to know who is currently using a remote desktop session, but also need to prevent other users from logging in. I found a way of getting a list of running processes and link them to the owning users, but there must be a better way... for example, Terminal Server brings a tool called query.exe which shows the users currently logged in. How did they do this? Is there a simple WMI call available for achieving this? I am looking forward to your suggestions. Tag: keyboard capture Tag: 96191
  - 9
    - Go Live I am looking to distribute my .Net 2.0 app to a couple of computers. I have signed the Go Live liscense and can do the same for each computer that needs the app. But I haven't found anywhere to dowload .Net 2.0. Even after I signed the liscnense. I don't want to install VS 2005 Beta 2 on each computer, but I can't find any other way to install it. Please help... Nick Tag: keyboard capture Tag: 96187
  - 10
    - Translate accented characters Is there anything in the framework which will help translate accented characters in strings to their standard counterparts? eg. "Gráda" to "Grada" Tag: keyboard capture Tag: 96184
  - 11
    - C# and VB.Net keyword Hi! VB.Net has the "static" keyword who allow me to declare a local variable static like in C. Is there any equivalence with C# ? Thanks for your help. JoÃ«l Tag: keyboard capture Tag: 96183
  - 12
    - Implications of using typeFilterLevel=Full after strong naming assemblies Hi, Env: Windows 2003, VS 2003, .Net 1.1 We just started strong naming our assemblies and ran into a .Net Security Exception when remoting between ASP.Net and our Windows service. The remoting call that failed with this exception returns an array of DataRows (from a strongly typed DataSet) from the service to ASP.Net. All our assemblies (apart from Microsft.Security.SSPI sink) are private. The exception is: Security Exception Description: The application attempted to perform an operation not allowed by the security policy. To grant this application the required permission please contact your system administrator or change the application's trust level in the configuration file. Exception Details: System.Security.SecurityException: Request failed. Source Error: An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below. Stack Trace: [SecurityException: Request failed.] Anyway, we solved this by setting the 'typeFilterLevel' to 'Full' in our server config file: <formatter ref="binary" typeFilterLevel="Full" /> After some research I found that people have mentioned security and possible performance issues with setting this level to 'Full', so I've a few questions on the implications of opening this up: 1) Why does strong naming a private assembly cause this problem, when an unnamed private assembly works fine? 2) I doubt it, but are there any performance issues? 3) The security issues appear to be from spoofing and code injection: http://blogs.msdn.com/manishg/archive/2004/10/27/248841.aspx Can you please confirm that these security issues existed before we strong named our assemblies and had to set the typeFilterLevel to full? This doesn't mean we'll ignore the vulnerabilities (we already authenticate callers), but we're just trying to understand the impact of this change. Thanks very much, Stuart PS. This is reposted from 'microsoft.public.dotnet.security' as I didn't realise that one wasn't a managed group. Tag: keyboard capture Tag: 96178
  - 13
    - unable to get message from exception I am having a peculiar problem. i have a servicedcomponent class1.method1 with a method (more than 18 parameters). i am calling this from another serviced component called class2.method. When an exception is thrown from class1.method1, the Exception.Message is not visible. when class1.method1 has <= 18 parameter the Exception.Message is visible. what could be the problem. any idea. thanks niranjan Tag: keyboard capture Tag: 96176
  - 14
    - different between debug and release? Does anyone know what is different between debug and release? thx Tag: keyboard capture Tag: 96173
  - 15
    - C# Timer control Hi, I have a timer control which writes to a file every 5 seconds but the application closes down before it gets to the second firing of the timer. How can i get the application to stay alive until the next timer interval comes around? Thanks *** Sent via Developersdex http://www.developersdex.com *** Tag: keyboard capture Tag: 96168
  - 16
    - InvokeRequired and CreateGraphics Hi, Here is what the documentation of InvokeRequired says : "In addition to the InvokeRequired property, there are four methods on a control that are safe to call from any thread: Invoke, BeginInvoke, EndInvoke and CreateGraphics. For all other method calls, you should use one of these invoke methods when calling from a different thread. " Could someone explain me why a call to CreateGraphics is "safe" ? One of my backgroud threads calls CreateGraphics on a control but when this control is destroyed (ie the application is closed), this thread is blocked on the call to CreateGraphics and isn't aborted. I don't understand why a call to Invoke isn't required in this case. Thanks Fabien Tag: keyboard capture Tag: 96167
  - 17
    - Saving the state of UI Hi, User can adjust the size of columns of a table or the position of splitter in UI. We want these adjustments to be remembered when we restart the application. Currently, we are saving these adjustments by the user in an XML and saving that XML. We read the XML upon restart and make calls to set the adjustments. This approach becomes difficult as we add more controls and more settings can be made by the user. What other techniques can be use to save (perhaps automatically) the STATE OF UI? As in Java, can we use Serialization of UI to save its state [Java's Swings control are serializable while in .Net, Form and all the controls are not serializable]? Any pointers to articles on various approaches to SAVING THE STATE OF THE ADJUSTMENTS made by the user will be greatly appreciated. Thanks in Advance, Regards, Mahesh Tag: keyboard capture Tag: 96162
  - 18
    - Socket and multi-threading Hi, Socket class documentation says that it is not thread safe. We understand that if do simultaneous sends on ONE socket then it will be a problem (or simultaneous receive). Can we create TWO threads on OUR OWN such that one will do SEND and one will do RECEIVE using the SAME socket reference? This means that two threads WILL BE in the same SOCKET object - one doing receive and one doing send. We know we can use asynchronous calls on the socket to achieve this but whether we can do this using our own threads. Any pointers to official documentation that shows that this is permissible? Thanks in advance, Regards, Mahesh Tag: keyboard capture Tag: 96161
  - 19
    - Datagrid Load data Problem Can i user dataset partially load the data to datagrid depends on the scoll bar moving? seems like power builder have this function of the data browser/windwows (i forgot), but it can partially load data to grid. So can someone know the method in VB.Net? Tag: keyboard capture Tag: 96158
  - 20
    - DataGrid Load Data Problem Can i user dataset partially load the data to datagrid depends on the scoll bar moving? seems like power builder have this function of the data browser/windwows (i forgot), but it can partially load data to grid. So can someone know the method in VB.Net? Tag: keyboard capture Tag: 96157
  - 21
    - Forms, multi-threading, Chats We are building Chat like application using Forms and as a result our programming is becoming complicated to display messages received on different threads in the chat window (due to STA requirements of Forms). Is there a way to build Chat like application WITHOUT using FORM, so that one can use free threading model (The link http://msdn.microsoft.com/library/default.asp?url=/library/en-us/cpguide/html/cpcondevelopingmultithreadedwindowsformscontrol.asp has statement "Outside Windows Forms, classes in the .NET Framework use the free threading model. For information about threading in the .NET Framework, see Threading."). IS THERE ANY WAY TO BUILD CHAT-like application without having to do complicated programming to satisfy STA requirements)? Thanks in Advance, Regards, Mahesh Tag: keyboard capture Tag: 96155
  - 22
    - Newbie - Help with VB.Net Install! I am a single user with XP Home Ed and have installed VB.Net onto PC. The installation appears to have been OK but I have a query. One of the new menu items is: Microsoft .Net Framework SDK v1.1 - which has the sub menu items: Documentation Overview Samples and QuickStart Tutorials Tools Now going into Samples and QuickStart Tutorials reults in a web page that has an article about downloading & installing MSDE but on reading through this it appears that MSDE needs IIS & ASP which does not come with XP Home Ed., so my question is can .Net Framework SDK be used on XP Home Ed Tag: keyboard capture Tag: 96151
  - 23
    - Format numbers e.g. 1 -> 1st, 12 -> 12th, 23 ->23rd Hi Is there anything in the framework that will format a number's 'order' suffix - to make it the Nth Regards Lee Tag: keyboard capture Tag: 96149
  - 24
    - Simple string encryption (solution) This message includes a solution for encrypting and encoding a string into a "safe" character string that you can read or pass in ASP.NET querystrings, and then decode and decrypt it back to its original form. If you find it useful, please let me know. I had an issue with a web site that I was working on where I needed to pass around a moniker in my querystring. While the database itself performed relevant security checks, I didn't want to expose this to my users. The problem I had is that I just wanted to encrypt/decrypt a string without having to know or understand anything about the cryptography namespace. I also wanted to be able to pass this value around in my QueryString. This code takes the unmodified symmetric encryption example code that Lion Shi posted a while back on Usenet, converts the resultant bytes to hex and then performs a simple substitution for aesthetics. If you plan to use this for your own purposes, and since I've posted this publicly, I recommend you change the values of the two variables having the value of "password" (they don't have to match, but if I remember what I've read on DES, I believe they need to be a multiple of 8 characters in length). The code that Lion Shi originally posted is located here: http://groups-beta.google.com/group/microsoft.public.dotnet.languages.csharp/msg/eb7712e9e5cc1045?hl=en This is the modified version that encodes the resultant byte arrays into strings. It seems to work on the three strings that I've tested it with, but I make no guarantees on its security or reliability. Usage Example: string s = "Raw Text String"; Response.Write(s); s = Encryption.Encode(s); Response.Write(s); s = Encryption.Decode(s); Response.Write(s); Source: using System; using System.Collections; using System.IO; using System.Security; using System.Security.Cryptography; using System.Text; public class Encryption { private Encryption(){} static byte[] m_bDESKey = ASCIIEncoding.ASCII.GetBytes("password"); static byte[] m_bDESIV = ASCIIEncoding.ASCII.GetBytes("password"); static char[] hex = "0123456789ABCDEF".ToCharArray(); static char[] munge = "ZXCVASDFQWERPOIU".ToCharArray(); public static string Encode(string text) { byte[] data = DesEncrypt(ASCIIEncoding.ASCII.GetBytes(text)); char[] chars = BitConverter.ToString(data).ToCharArray(); ArrayList al = new ArrayList(); for (int i = 0; i < chars.Length; i++) { if ((i + 1) % 3 == 0) continue; //BitConverter.ToString(...) returns data in the format XX-XX-XX -- this skips the dashes. al.Add(munge[Array.IndexOf(hex, chars[i])]); } return new string((char[])al.ToArray(typeof(char))); } public static string Decode(string text) { char[] chars = text.ToCharArray(); ArrayList al = new ArrayList(); for (int i = 0; i < chars.Length; i += 2) { al.Add((byte)(Array.IndexOf(munge, chars[i]) * 16 + Array.IndexOf(munge, chars[i + 1]))); } byte[] decrypted = DesDecrypt((byte[])al.ToArray(typeof(byte))); return ASCIIEncoding.ASCII.GetString(decrypted,0,decrypted.Length); } static byte[] DesEncrypt(byte[] data) { MemoryStream ms = new MemoryStream(4096); DES des = new DESCryptoServiceProvider() ; CryptoStream encStream = new CryptoStream(ms, des.CreateEncryptor(m_bDESKey, m_bDESIV), CryptoStreamMode.Write); encStream.Write(data,0,data.Length); encStream.FlushFinalBlock(); //calculate the length of the encrypted data byte[] bResult = new byte[ms.Position]; ms.Position = 0; ms.Read(bResult, 0, bResult.Length) ; encStream.Close(); return bResult; } static byte[] DesDecrypt ( byte[] data ) { MemoryStream ms = new MemoryStream(data.Length); DES des = new DESCryptoServiceProvider() ; CryptoStream encStream = new CryptoStream(ms, des.CreateDecryptor(m_bDESKey, m_bDESIV), CryptoStreamMode.Read); ms.Write(data,0,data.Length); ms.Position = 0; string strResult = new StreamReader(encStream).ReadToEnd(); encStream.Close(); return ASCIIEncoding.ASCII.GetBytes(strResult); } } // -- // Alan Samet // http://www.alansamet.com/ // http://www.htmlwindows.net/ // http://www.usfbs.com/ // http://www.marshwoodwinds.com/ Tag: keyboard capture Tag: 96146
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    - Automate screen scraping: How to programmically "push" a Login button on another web page? I'm hoping to write a utility program that will navigate to another web site, logon with my username/password, and download data automatically on a schedule. When I use HttpWebRequest to get the initial logon screen, there are multiple embedded forms (Login, Forgot your Password, etc). I want to be able to pass my username/password information to the web page's login form and "push" the button (on their webpage, this is done through some javascript code). When I view the source code of this page, it appears that several hidden variables are set, so I imagine the I would need to get/accept/return cookies. I'm not sure how to "direct" the infomration to a page's particular "form" - in my case, "pushing" the Login button. Is there an example to automating this type of login that someone could share with me? Thanks! Tag: keyboard capture Tag: 96141

I've written a simple application. It consists of main window, menu and a
label. I added event handler to the main form (KeyDown), so when I push a
key on the keyboard, then it's key code should be displayed using a label
(label.Text = e.KeyCode). It works fine with "A", "B" etc. but when I press
left arrow, up arrow etc, the main menu popups and KeyDown event is not
handled.
What should I do ?
PS. I use .NetFramework 2.0 Beta2. In .NetFramework 1.1 there wasn't such
problem.

Emil.

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Re: keyboard capture by Rob

Rob
Thu May 12 07:38:11 CDT 2005

Try overriding the ProcessCmdKey method of the main form.

Rob.

"Emil" <emil1983@op.pl> wrote in message
news:d5rbnb$bo$1@nemesis.news.tpi.pl...
> I've written a simple application. It consists of main window, menu and a
> label. I added event handler to the main form (KeyDown), so when I push a
> key on the keyboard, then it's key code should be displayed using a label
> (label.Text = e.KeyCode). It works fine with "A", "B" etc. but when I
> press left arrow, up arrow etc, the main menu popups and KeyDown event is
> not handled.
> What should I do ?
> PS. I use .NetFramework 2.0 Beta2. In .NetFramework 1.1 there wasn't such
> problem.
>
> Emil.
>
>

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