Unable to Validate Data

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  - 1
    - Dynamically loading controls -> loosing type Hi NG We want to load controls dynamically and create them on a WinForm. Doing so, we seem to loose type information. The scenario is as follows: The class MANCombobBox inherits from ComboBox and implements the interface IReportDataSource. This works: Control c = new MANComboBox(); //MANComboBox inherits from ComboBox and implements the interface IReportDataSource MessageBox.Show( (c is IReportDataSource).ToString() ); //This returns/displays true Here we have the problem: Assembly asm = Assembly.LoadFile("LookupControls.dll"); //loads the dll which contains the MANComboBox control Control control = (Control) asm.CreateInstance(fullControlName); //Pointing with the mouse onto control, the IDE tells me, that control contains something of type MANComboBox MessageBox.Show( (control is MAN.Framework.Win.MANReportLookupControls.MANComboBox).ToString() ); //returns false Intellisense even shows me the methods of the implemented interface IReportDataSource but during runtime an invalid cast exception is thrown. Any hints? Thanks for all the help we get Cheers Peter Tag: Unable to Validate Data Tag: 88482
  - 2
    - Determine type of application at runtime I have a library which I may use with either a console app or an asp.net web app. Does anyone have a suggestion on how that library could determine the type of running application at runtime? Thanks AJ Tag: Unable to Validate Data Tag: 88479
  - 3
    - string pool Hi! Is there a string pool in .NET like in Java? Is there any difference between == and Equals() for string? If I do the following: string s1 = "hello"; string s2 = "hello"; Will s2 reference the same object as s1? Thanks. Tag: Unable to Validate Data Tag: 88474
  - 4
    - Fully trust digitally signed assemblies Hello all, Im posting this question to this forum as well hoping to find an answer. I had previously posted to the .net security forum but have not gotten a response yet. Here is the problem. I have an isolated network where I am not connected to the web. I'm using some digitally signed assemblies in my .net application and am running the application from my local drive. Im signed in as admin to the machine. With Windows 2k, sp4 and .net 1.1. I notice unusually long loading times when using the digitally signed assemblies (10+ seconds) and I can see that whenever I launch the app, some network activity is generated. There are some queries to crl.thawte.com made and the form loads up. Normal loading time is supposed to be about 1 second. I have tried using the .net config tool to give full trust to the publisher, the assembly and so on. But it seems like the .net framework always like to walk the certificate chain everytime and in doing so needs to be connected to the net. Otherwise, the timeouts just end up delaying the loading of the assembly. If I am running the app from a fully trusted location, why would the framework need to keep validating the certificate and look up the crl? I though this would only happen if I'm downloading the app from a url link or running it from a network. How do I fully trust a publisher so that I do not get these delays? Can I somehow force the framework to reduce its timeouts? Or to not check for crl's online? Can I install something locally on the system so that it does not require network access to load the speedy fashion? Is network access a prerequisite to using digitally signed assemblies ? Has anyone else run into these problems before? Thanks Tag: Unable to Validate Data Tag: 88472
  - 5
    - http header Proxy-Connection not set to Keep-Alive by setting HttpWebRequest.KeepAlive to true Hi All, I'm trying to track down why my application built on HttpWebRequest and HttpWebResponse fails to successfully log onto and access some web resourses, while IE does so without problem. The sequence of requests and responses culminates in a page for IE but in an exception for my application of type 'System.Net.WebException': The remote server returned an error: (504) Gateway Timeout. Using an http sniffer (Ethereal) I can see that IE is setting the http request header "Proxy-Connection" to "Keep-Alive" while my application does not send that header. Yet for each new request I make I include the line of code: request.KeepAlive = true; Any pointers as to why setting my HttpWebRequest's KeepAlive property to true is not resulting in the "Proxy-Connection" header being set to "Keep-Alive"? Cheers, Tim. Tag: Unable to Validate Data Tag: 88470
  - 6
    - Visual Studio ASP NET Project is rebuilding all the times Hello, what can be the cause of building my ASP.NET project when it has apparently no reason - if there are no code changes, and I have choosen "Start without debugging" menu. I have done investigation in all possible projects files and directories, but no clue. Other projects behave correctly. Thanks Miso Tag: Unable to Validate Data Tag: 88469
  - 7
    - How can I copy a value type dynamically without knowing the type. I need to be able to dynamically create a new copy of a value type without knowing the type at compile time. i.e. I need to be able to write a method such as: ValueType MyMethod(ValueType data) { return copy-of-data; } which returns a new ValueType that is a copy of the 'data' parameter. Returning the 'data' parameter itself is no good as it returns the boxed value which is passed into the method, and therefore references the original variable. I would have thought that there would be a simple way to do this, but I can't think of it. Can anyone give me an idea how to do this? Robert. Tag: Unable to Validate Data Tag: 88462
  - 8
    - Single instance application using remoting errors Hi, I am experiencing an issue with remoting trying to implement a single instance app behaviour required for our application. I am using the MS best practice recommended solution of using Remoting and Mutexes to provide this behaviour. In simple terms this is the process: 1. The application's Main() method creates an instance of a SingleInstanceHandeler class (code attached). 2. The Main() method then calls the Run method on this class. 3. The Run method creates a unique key for this application (user and workstation specific also) and attempts to lock a Mutex for this key. If it succeeds this is the first instance. If it fails it is not the first instance. 4. If this is the first instance a remotable version of the SingleInstanceHandeler is registered and a channel created to listen for requests. The OnStartup event is then fired, passing the command line arguments, which is handled by the class in which the application's Main method is contained. 5. If this is a second instance, a connection to the remoted version of SingleInstanceHandeler is created and the OnStartUp event fired on the "remote" object passing the command line arguments. The second instance then exits. Now this works great for a short period of time. However, after some time (maybe 5 minutes) the remoting channel stops "listening" (my best guess as to the problem). This means that any second instance fails to create a connection to it and throws an exception. I have also tried using the MS implementation of this logic as available in this (http://msdn.microsoft.com/library/default.asp?url=/library/en-us/dnwinforms/html/reaworapps1.asp) MS sample. But it appears to suffer from a different issue throwing an exception from within mscore.dll which implies a framework bug. Here is the code used for the Main() method: [STAThread] static void Main(string[] args) { SingleInstanceHandler InstanceHandler = new SingleInstanceHandler(); InstanceHandler.StartUp +=new StartUpEventHandler(InstanceHandler_StartUp); if(InstanceHandler.Run(args)) { // Intialise the tool bar form but never show the form. // The task bar icon will show however. frm_Common_TaskbarIcon frm = new frm_Common_TaskbarIcon(); Application.Run(); } } The code for the SingleInstanceHandler class is attached. I would be grateful for any help anyone can provide on this. I am sure I am just missing something obvious with regard to the life span of the remotable object. But can't seem to see what. Thank you in advance for your help. Regards, Anne. anne.catterick @ no-spam.legendware.co.uk Tag: Unable to Validate Data Tag: 88460
  - 9
    - run windows forms from localIntranet_zone Hello! I have a windows forms application developed in VS.NET 2003 (C#) that I want to install on the intranet. I've created a strong_name.snk file, compiled it with the app, installed it on the server and on the client machine, I added the child code group under LocalIntranet_Zone, for that assembly, with full trust. I did it on two separate intranet systems and it worked in one place but not the other. I've created a simple test-application (also with strong name) and just copied the file to the network share but it gave me a warning that the application was running in a partailly trusted context. Is it some security settings in Windows causing this error? Where should I look? Thanks! /Miro Tag: Unable to Validate Data Tag: 88458
  - 10
    - simple intercommunication (application intercommunication) Hi, I'm after a simple way of sending a message to a previous instance of my small helper application that processes some command line instructions. The app can be configured to remain open (for debugging purposes) & this is where my problem arises. I can find the other (running) instance & close the new instance easily, however, the command line instructions need to be sent to the 1st instance application. I would be most grateful is someone could prove a simple method (even if it means populating a textbox & triggering a buttons 'click' event (on the 1st instance)). Basically, then new app sends a string (the command line) to the existing app (1st running copy) then closes. The running app handles the new command line instructions. Regards - Steve. (PS, if this is the wrong NG, let me which one is the right NG & I'll repost there!) Tag: Unable to Validate Data Tag: 88455
  - 11
    - Generics in VB.Net? In C++ I can write template classes and in C# they have generic classes that are something like C++ template classes. Is there currently a why to write them in VB? MS is adding C++ type functionality like operator overloading to VB in version 2.0 of the .Net Framework. Will there be a way in version 2.0 to write generic classes in VB? If not does anyone know the syntax to create an instance of a C# generic class in VB? Thanks Robby Tag: Unable to Validate Data Tag: 88450
  - 12
    - want to make numericupdown control balnk Hi. Does anybody know how I can make this work? I assign String.Empty to this control's text property in the form load event but it does not have any effect... Instead it displays the set minimum value. This should be doeable since I can erase the text by pressing DELETE or BACKSPACE and it allows it to remain that way. But I want it to be so automatically upon load. Suggestions anyone? Thanks in advance. Tag: Unable to Validate Data Tag: 88449
  - 13
    - String.Replace to replace \ (slash) I have tried newstring = oldstring.Replace(Convert.ToChar(92), ' '); newstring = oldstring.Replace("\\", " "); Neither of which works. I am tring to take out all \ (slashes). Please help. Tag: Unable to Validate Data Tag: 88445
  - 14
    - Localization of Exception messages I have an hard time figuring out how to deal with localization and Exception messages. I have some options: 1) Standardize on english. 2) Pass an "Error Number" to my exceptions, which would ultimately translate to something localized if the app ever wants to display it (by calling the Message property). 3) Use the System.Resources namespace classes each time I throw an exception to make sure the right message is passed to the exception at creation. If I want to localize the throwing of an ArgumentException exception, for example, then only the first method (obviously) and the third method would localize the error message. With the other method, I would have to subclass ArgumentException to my own LocalizedArgumentException that takes an error number (which map to a localized error message) in argument. Anyway, I'm really stuck here, conceptually speaking. I don't know what are the best practices regarding that matter. Etienne Fortin Of the three methods, only the third one, which I don't like (efficiency reason), allows localization of standard .NET Framwork exceptions throwing. Tag: Unable to Validate Data Tag: 88441
  - 15
    - HttpWebRequest not sending cookies Hi All, I'm having problems with HttpWebRequest, HttpWebResponse, and cookies. I copy over the cookies from the server's HTTP response using the following code: if (response.Cookies.Count > 0) { request.CookieContainer.Add(response.Cookies); } And I can see that the cookies are correctly copied since the cookie count on the request now equals the cookie count on the last response. But, when I come to enumerate the headers of the request, the cookies are not listed, nor do they show-up in the HTTP headers gleaned using a packet sniffer (Ethereal). Can anyone suggest factors I should be exploring, I've been going round and round this problem for days :-( Thanks, Tim. Tag: Unable to Validate Data Tag: 88439
  - 16
    - Using dynamic ports (port 0) in TcpListener; how to configure port ranges? Hi. I've created a .net service to transfer files from and to a server from a client. When a file is transferred, the server opens a dynamic port by suppling port 0 to the TcpListener it's created and then communicates this port to the client so that the client knows how to connect (much like passive ftp transfers). Now when a sysadmin uses this service, is there any way he can control which port ranges the .net framework or the underlying service provider (and which provider is that?) uses? Or is there a better way to get a dynamic port number using the .net framework? Tag: Unable to Validate Data Tag: 88437
  - 17
    - Installing a windows service 'manually' Hi! I created a windows service and was able to install and deinstall it with the 'installutil.exe' utility. Is there any possibility to install it directly from my application? The documentation only says that it *should* not be done but neither why it shouldn't be done nor how it is possible. I created a setup application to install it and that works. But I would like to spare my users to either run another setup or work with the installutil-program. Two buttons 'install service' and 'uninstall service' would be much better. Please tell me how to do that or why I shouldn't do so. TIA, Henrik Heimbuerger -- ICQ-UIN: 14011335 Website: http://henrik.heimbuerger.de/en/ Tag: Unable to Validate Data Tag: 88433
  - 18
    - IPC between application and windows service Hi! I would like to know what the 'official' method of communication between a windows service (*not* a web service) and an application is. To be more specific: I am writing a windows service with .NET that is used for backuping purposes. The user should for example be able to start a backup manually, that is to send a message to the service to start with the backup now. The service shall not have a GUI, but the application has. Now how to I tell the service to do something from the application? I was able to write a windows service and I am also able to create a windows forms application. My first idea was to use .NET Remoting. But Remoting always uses TCP/IP, right? So that would mean that my application might run into firewall problems, doesn't it? TIA, Henrik Heimbuerger -- ICQ-UIN: 14011335 Website: http://henrik.heimbuerger.de/en/ Tag: Unable to Validate Data Tag: 88432
  - 19
    - Creating an object depending on a value of a parameter Hi all, I have a method which takes a string parameter. It takes a type name as a string. Inside the method, i want to create an instance of the type which is mentioned in the string parameter. Please help me providing with some example code. Thanks, Chamith Tag: Unable to Validate Data Tag: 88417
  - 20
    - Assembly.Load() with strong name but no version! Is there any way to Assembly.Load() dynamically the DLLs of my project, with their strong names, but without the need to specify a version? I just want the public/private key to exist as a measure of safety for their authenticity. I don't want to narrow down the valid DLLs to only those that share the same version. Because if later i decide to upgrade a DLL, I'll have to recompile and send to the customer the WHOLE project, and not just the newer DLL, because its version will differ from the others... Thanks! Tag: Unable to Validate Data Tag: 88416
  - 21
    - FileSystemWatcher not firing changed event I have setup a FileSystemWatcher to fire an event when the specified file is modified. But the event never fires for some reason and the file is being modified. I have pasted the setup code below. I must be doing something wrong (I have verified the file names and path as being correct). Tony m_oFileSystemWatcher = new FileSystemWatcher(); m_oFileSystemWatcher.NotifyFilter = NotifyFilters.LastWrite; m_oFileSystemWatcher.Path = Path.GetDirectoryName(sLocalFilename); m_oFileSystemWatcher.Filter = Path.GetFileName(sLocalFilename); m_oFileSystemWatcher.Changed += new FileSystemEventHandler(OnFileSystemWatcher_Changed); m_oFileSystemWatcher.EnableRaisingEvents = true; private void OnFileSystemWatcher_Changed(object sender, FileSystemEventArgs e) { m_bFileModified = true; } Tag: Unable to Validate Data Tag: 88414
  - 22
    - Using Webclients through proxy servers. Has anyone out there successfully used the webclient to download files through a proxy?? I've seen anumber of posts asking the question but no solutions. Help! anyone? Tag: Unable to Validate Data Tag: 88411
  - 23
    - System.Xml - Controlling linebreak/indentation on child/inline ele I'm going insane fighting against the xml reader/writer. I have xml that should look like this: <source><g>varname</g> some text <g>varname</g> <g>varname></source> This is a simplified version, but the point is that all spaces in the <source> element are significant. My problem is two-fold. First, the writer is determined to format this like so: <source> <g>varname</g> some text <g>varname</g> <g>varname></source> If I use the xml:space="preserve" attribute, I get the linebreak and indentation spaces. If I don't, I lose the space between </g> and <g>. The problem comes in when there might actually be significant spaces before the first <g> element. Distinguishing between significant spaces and the indentation spaces can't seem to be done. So the solution is probably to have the writer not put the <g> elements on a seperate line. But I can't figure out how to do this. Or maybe there's another way? This is killing me. Please help. Tag: Unable to Validate Data Tag: 88410
  - 24
    - Calling a service from a windows client Hi I'll try and keep this short! When calling a web service async. I can use the Beginxxx method on the generated proxy. But if me 'service' was not a web service but something else, is it better to create a new Thread for the call or use the threadpool; baring in mind that the service call could take a little while (between 1 and 10 seconds, depends on the amount of data returned!) Thanks for your help. Tag: Unable to Validate Data Tag: 88409
  - 25
    - SmtpMail error when sending mail Hi , I have a form which is i lost my password . When user enters mail address , the system send a mail to user mail address. But it gives an Relay Error . How can the system send mail ? Tag: Unable to Validate Data Tag: 88404
- Next
  - 1
    - Software written in .Net If software is written in .Net technology, is it possible for that application to operate on a Mac. I know no one with a Mac, can't test it, and don't know where to turn. Does anyone have any advice? If I am being to vague let me know I will elaborate a bit more. Please help? Tag: Unable to Validate Data Tag: 88393
  - 2
    - Avoiding deadlock caused by Invoke I?ll try to explain my situation as clearly as possible? J I have a UI form that fires a worker thread. The worker thread regularly updates the UI via an Invoke (naturally). So far so good. The UI form also has a button that can abort the thread. What I?m trying to achieve is for the UI to say that the thread has been aborted once it has indeed been aborted. Here?s my problem: The user hits the Abort button which does an Abort() on the thread (after interrupting a waitsleepjoin) and, as per the MSDN documentation then does a join() to wait for the worker thread to finish (the documentation says that I *must* join). The worker thread captures the abort signal and attempts to update the UI via an Invoke. Of course, the main UI thread is now already joined to the worker thread, so the invoked method called by the worker thread sits in the UI thread queue and is unable to proceed because the UI is waiting for the worker thread to abort. Result à deadlock. I?m sure that there?s a ?standard? way to resolve this presumably common scenario, but I just can?t seem to track it down. Any ideas? TIA Mark Tag: Unable to Validate Data Tag: 88392
  - 3
    - windows 2003 version i'm using hosting service and want to query the windows 2003 version at runtime and output it to the response (asp.net) how can this be done? (web edition etc) is there behaviot defferences i might expect from different version of windows 2003 server? i experience a problem with the code validatior add to the result HTML, and want to search for the difference source. i use XP Pro for dev and windows 2003 hotsing for production. and the code the framework generates in the HTML have differences. what might be the source for that? see my post (validator stop working) in the aspnet group for more. TIA, z. Tag: Unable to Validate Data Tag: 88391
  - 4
    - Slow AD query Hi there, I'm creating a little application that between other things will get the logged user information and will do a AD query to get his distinguishedName attribute but that query is taking too long (about 8 seconds). The code for the C# method is as follow: string[] propToLoad = new string[] { "distinguishedName" }; string filter = "(&(objectCategory=user)(sAMAccountName=" + accountName + "))"; DirectorySearcher searcher = new DirectorySearcher( filter, propToLoad ); SearchResult sr = searcher.FindOne(); if ( sr != null ) { return sr.GetDirectoryEntry().Properties[ "distinguishedName" ].Value.ToString(); } return null; where accountName is the logged user account name. Any idea why that's happening? Am I missing some initialization? Thanks in advanced Mr. Fornaris Tag: Unable to Validate Data Tag: 88389
  - 5
    - Slow AD query Hi there, I'm creating a little application that between other things will get the logged user information and will do a AD query to get his distinguishedName attribute but that query is taking too long (about 8 seconds). The code for the C# method is as follow: string[] propToLoad = new string[] { "distinguishedName" }; string filter = "(&(objectCategory=user)(sAMAccountName=" + accountName + "))"; DirectorySearcher searcher = new DirectorySearcher( filter, propToLoad ); SearchResult sr = searcher.FindOne(); if ( sr != null ) { return sr.GetDirectoryEntry().Properties[ "distinguishedName" ].Value.ToString(); } return null; where accountName is the logged user account name. Any idea why that's happening? Am I missing some initialization? Thanks in advanced Mr. Fornaris Tag: Unable to Validate Data Tag: 88388
  - 6
    - REQ:how do you disable Windows Messenger I'd like to totally disable windows messenger. Is there any way of doing this. I tried to just delete the folder but that was a very bad move. Tag: Unable to Validate Data Tag: 88387
  - 7
    - create setup with dinamic content ... hi, i've this problem ... i create vb.net app that lauch some file in a child dir , like images , etc ... the app dinamically read the content of the dir and rearrange itself ... i' would give the possibility to our customer to create a setup of this app that each time customer create the setup copy the content of the dir that contatins files .... how can i do this ??? the only solution i found is to make a zip of the dir and then put a condition on launch that unzip the files .... thanks much andrew Tag: Unable to Validate Data Tag: 88379
  - 8
    - Enter Key and PostBack? I noticed that I get a PostBack in my LoadPage() method whenever a user hits the Enter Key in a TextBox in a browser window. Why do I get the Postback? Can you identify that the Enter Key and which TextBox caused the PostBack? If not is there some way (except for javascript) to get an event indicating that the Enter Key was hit? Tag: Unable to Validate Data Tag: 88377
  - 9
    - Clipboard Class We are using clipboard across the length and breadth of our app. What is the class that is used for clipboard in .Net? Tag: Unable to Validate Data Tag: 88376
  - 10
    - Interop problems using VFP 6.0 and Framework 2.0 beta Hi All, There is a incompatibility between VFP 6 and Dotnet 2.0. we have a VFP class called message.dll, initially this was compiled in VFP 6.0 we did the folowing 1) use regsvr32 "message.dll" and register on client machine 2) used tlbimp message.tlb /out:messageDotnet.dll to convrt it to a dotnet DLL the above two steps gave no problems We then referenced the messageDotnet.dll class from dotnet 2.0 and whenever we executed the code it returned the following error "user-interface operation not allowed at this time". the funny thing was that when we tried to reference the original VFP 6.0 dll i.e "message.dll" from vb 6.0 it didnt throw any error. Now on a hunch we RE-compiled the VFP message.dll using VFP 7.0 and re-added it to the Dotnet solution, after recompiling as outlined in the steps 1 and 2; and Viola there was no problem and all worked fine What is this weird behaviour about, please enlighten us !!!! Thanks guys in advance. Tag: Unable to Validate Data Tag: 88371
  - 11
    - is there any way to get to a unique build verion of an assembly at runtime? e.g. a version that is unique to the time that the assembly was built? is there any way to get to a unique build verion of an assembly at runtime? e.g. a version that is unique to the time that the assembly was built? Tag: Unable to Validate Data Tag: 88370
  - 12
    - My Pictures and Setup Project Hello, How do I place pictures in the My Pictures Folder from a Setup Project? I do not see anything that resembles this directory inside Custom Folders within the Setup Project. Thanks, Chuck Tag: Unable to Validate Data Tag: 88369
  - 13
    - Am I creating the correct signature to wrap this unmanaged functio The function signature in the unmanaged DLL is as follows. KPDCStatus KPDCIteratorFind(KPDCIteratorRef inIteratorRef, const char *inName, KPDCOpaqueRef *outFoundItemRef); The types are: KPDCStatus = int KPDCIteratorRef, KPDCOpaqueRef = void* I am wrapping it so: Declare Auto Function KIteratorFind Lib "DCSPro4SLR.dll" Alias "KPDCIteratorFind" (ByVal inIteratorRef As IntPtr, ByVal inName As String, ByRef outFoundItemRef As IntPtr) As Integer I figure inName As String is wrong. How should I do this. VB.Net Tag: Unable to Validate Data Tag: 88358
  - 14
    - Programatically retrieving the "Startup Type" for Windows Services How can I programmatically retrieve the "Startup Type" for a Windows Service? Thanks, Eric Tag: Unable to Validate Data Tag: 88357
  - 15
    - Code runs with breakpoint, but without bPoint gives StackOverflowE Okay, I have this app. On load it runs an initialization routine on an unmanaged .dll. The code has a button. The handler calls a function 'FillCameras'. If I put a breakpoint at that line (Call FillCameras) the code runs fine, even if I don't walk through the code after that. It seems to just need to pause. I can then remove the breakpoint and click the button as much as possible, and it fires as expected. If I do not have a breakpoint at that line, or any other line, and let the button fire on it's own, I get: An unhandled exception of type 'System.StackOverflowException' occurred in mscorlib.dll Any ideas? This happens even if I wait for a while after the form loads. Tag: Unable to Validate Data Tag: 88356
  - 16
    - Visual Studio Functionality We're having a bit of a quandary at my office and this seems to be the perfect place to get the answer and perhaps some clarification. Currently, the "official" architecture for my organization is J2EE. It is my understanding that the .NET framework serves essentially the same purpose and that it exists as part of the operating system in Windows. In the past there have been a number of applications developed in either MS Access or Visual Basic. Many of these may never be converted to Java and it certainly won't happen anytime soon. As a result, some people are asking for newer versions of Visual Basic (i.e. .NET) in order to maintain and improve these existing applications. Is it possible to use Visual Studio and only develop "straight" VB code that does not use the framework (this has been specifically prohibited by upper management)? Do all versions of Visual Studio give you access to the framework or only the enterprise versions? If all versions give you access is it possible to determine if/when you are using the framework? I would really appreciate some guidance from those of you who are very familiar with this product. Thanks in advance. Tag: Unable to Validate Data Tag: 88354
  - 17
    - System.Web.Mail Transport Error This question falls into the category..."nothin a reboot won't fix"... The exception I receive is as follows: "The message could not be sent to the SMTP server. The transport error code was 0x800ccc14. The server response was not available." If I want the exception to stop occurring (for a while), I just reboot the machine that the app and SMTP Service is running on. Note that SMTP Service start and stop does not help. Please note that I never know how long the app will run until the error occurs sometimes 1 hour, sometimes 8 hours. The transport error code was 0x800ccc14 is a winsock error, "SOCKET_INIT_ERROR Unable to initialize Winsock". Any ideas? Thanks! Tag: Unable to Validate Data Tag: 88353
  - 18
    - Can you spawn a new browser window from ASP.NET code? Can you spawn a new browser window from a web application or does it have to be done from the HTML code in the browser? Tag: Unable to Validate Data Tag: 88350
  - 19
    - Code generation for array of components Hello all, I am trying to create a custom component which contains an array of another custom component. A property is added to wrap the array - this allows .NET's built-in property editor to provide a comfortable means to populate and edit the array. The problem I have run into is that after all this is done, the array itself is never generated into code and all the created objects simply spill onto the form as well - which can be a problem because of the size of the array I would like to create. I would prefer not writing a custom editor and code generator because I think .NET should have all I need, I just need to figure out how to control it. Hopefully this example might clarify what I am trying to do. Assume I create a new component, and add the following code to it: ************************** private System.Timers.Timer[] tarray=null; public System.Timers.Timer[] TArray { get { return tarray; } set { tarray=value; } } *********************** Now, after I compile the class and add it to the toolbar and drop an instance of the component onto my main form, it has a TArray property. I can click on this property's ellipsis button ("...") and populate this property with timer objects. As I do this, 2 problems occur: 1 - when I'm done and click OK, the array is never created in code - it remains null regardless of any editing that occurs - so the next time I edit my object's TArray it is empty again 2 - the timer objects are created, but apart from the array and they appear separately in the form editor In this example, I would still like to be able to create timer objects outside the TArray property and have them appear on the form - only timer objects which are created inside the array should not appear separately. Any tips on how to generate the desired behavior (array's code generation and only the container object in form editor) are greatly appreciated! Thank you, Markus Tag: Unable to Validate Data Tag: 88346
  - 20
    - problem moving console appliation to send email to server I created a console application using .net to email information out on a monthly basis. My problem is this. It works from my pc and anyone else with the visual studio .net, but not from the web server. Was i supposed to do anything else other than build my solution and copy my exe to that server. When they double click on the exe they get the following error message. What else should be down there other than the framework. CDOSYS.DLL is on the machine Microsoft Windows [Version 5.2.3790] (C) Copyright 1985-2003 Microsoft Corp. U:\>E:\batch\TESTApp.exe Unhandled Exception: System.IO.FileNotFoundException: File or assembly name Inte rop.CDO, or one of its dependencies, was not found. File name: "Interop.CDO" at ConsoleApplication1.Module1.Main() === Pre-bind state information === LOG: DisplayName = Interop.CDO, Version=1.0.0.0, Culture=neutral, PublicKeyToken =null (Fully-specified) LOG: Appbase = E:\batch\ LOG: Initial PrivatePath = NULL Calling assembly : ConsoleApplication1, Version=1.0.1803.26418, Culture=neutral, PublicKeyToken=null. === LOG: Policy not being applied to reference at this time (private, custom, partia l, or location-based assembly bind). LOG: Post-policy reference: Interop.CDO, Version=1.0.0.0, Culture=neutral, Publi cKeyToken=null LOG: Attempting download of new URL file:///E:/batch/Interop.CDO.DLL. LOG: Attempting download of new URL file:///E:/batch/Interop.CDO/Interop.CDO.DLL . LOG: Attempting download of new URL file:///E:/batch/Interop.CDO.EXE. LOG: Attempting download of new URL file:///E:/batch/Interop.CDO/Interop.CDO.EXE Tag: Unable to Validate Data Tag: 88345
  - 21
    - Saving event logs Is there any way through .net to save off the application event log to a file short of looping through each entry and saving it? I need the "Save As" functionality provided in event viewer in my application. Tag: Unable to Validate Data Tag: 88344
  - 22
    - ASP.NET 2.0 View State Error/Problems - HELP! We are running on .NET 2.0 Beta 1 (which may or may not be the reason for this problem but I think this problem has been around since .NET 1.0 and continues today). The whole error is below, but specifically, it's the "Invalid character in a Base-64 string." Anyone have an idea of how to fix this or dealing with this problem? Here is the full message: Error occurredThe client disconnected. System.Web at System.Web.UI.ViewStateException.ThrowError(Exception inner, String persistedState, String errorPageMessage, Boolean macValidationError) at System.Web.UI.HiddenFieldPageStatePersister.Load() at System.Web.UI.Page.LoadPageStateFromPersistenceMedium() at System.Web.UI.Page.LoadAllState() at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) at System.Web.UI.Page.ProcessRequest(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) at System.Web.UI.Page.ProcessRequest(HttpContext context) at System.Web.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) Invalid viewstate. Client IP: 192.168.1.176 Port: 1780 User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; .NET CLR 2.0.40607) ViewState: /wEPDwULLTIwMDE0OTE2ODIPZBYCZg9kFgICAw9kFgoCAQ9kFgJmD2QWBAIBD2QWAmYPZBYCZg9kFgJmD2QWAmYPZBYCZg8UKwANZGRkZGRkZGRkZGRkZGQCAg8PFg IeB1Zpc2libGVnZBYCZg9kFgJmDxYCHgRUZXh0BeMCPERJViBhbGlnbj1jZW50ZXI+PEZPTlQgY29sb3I9I2ZmMDAwMD4NCjxUQUJMRSBib3JkZXI9MD4NCjxUQk9 EWT4NCjxUUj4NCjxURD48QSBocmVmPSJodHRwOi8vd3d3LmhyLmNvbS8iPjxJTUcgc3JjPSIvSFJBcnRpY2xlL0ExMjc3NzFGLTJFMjYtNDkyRC05MjMyLTMxMThB ODY1NjY3QS9Tbm93TWFuSFJDT00uZ2lmIiBib3JkZXI9MD48L0E+PC9URD4NCjxURD48U1RST05HPkhhcHB5IEhvbGlkYXlzITxCUj48L1NUUk9ORz48QlI+PEZPT lQgY29sb3I9I2ZmMDAwMD5UaGlzIHNpdGUgaXMgaW4gQkVUQS4gPEJSPkNodWNrIHdhcyBoZXJlLi4uPC9GT05UPjwvVEQ+PC9UUj48L1RCT0RZPjwvVEFCTEU+PC 9GT05UPjwvRElWPmQCAw9kFgJmDw8WBB4KU2l0ZU1hcFhtbAWG+gI8U2l0ZU1hcD48Tm9kZSBJRD0iNzMiIFRleHQ9IkhSLmNvbSBUb2RheSIgSW1hZ2VVcmw9IjE 2eDE2L1RvZGF5LmdpZiIgRXhwYW5kZWQ9IlRydWUiIE5hdmlnYXRlVXJsPSIvIj48Tm9kZSBJRD0iMTUzIiBUZXh0PSJNeSBIUi5jb20gUHJvZmlsZSIgSW1hZ2VV cmw9... Invalid character in a Base-64 string. mscorlib at System.Convert.FromBase64String(String s) at System.Web.UI.ObjectStateFormatter.Deserialize(String inputString) at System.Web.UI.ObjectStateFormatter.System.Web.UI.IStateFormatter.Deserialize(String serializedState) at System.Web.UI.HiddenFieldPageStatePersister.Load() Tag: Unable to Validate Data Tag: 88340
  - 23
    - Monitor class not working as specified Hi! I have trouble with the Monitor class. I did some troubleshooting and finally figured out the problem. The thing is, the Monitor class simple does not work as specified. Better said, if used by the framework through lock( obj ) statements it works fine, however if used through Monitor.Enter( obj ) and Monitor.Exit( obj), deadlocks can occur. Here is a simple example that shows this behavior. If the example is run as specified everything is fine. If the lock statements are commented, and Enter & Exit statements uncommented deadlock occurs. Why this happens? .NET framework help specifies that this should be the same. I found in the help, that Monitor maintains Waiting and Ready queues of threads for each object, but I haven't found the clear explanation of the meanings of this queues. Any sugestions? using System; using System.Threading; namespace ConsoleApplication4 { /// <summary> /// Summary description for Class1. /// </summary> class Class1 { string s; /// <summary> /// The main entry point for the application. /// </summary> [STAThread] static void Main(string[] args) { Class1 c1 = new Class1(); Thread t1 = new Thread( new ThreadStart( c1.f1 )); Thread t2 = new Thread( new ThreadStart( c1.f2 )); t1.Start(); t2.Start(); t1.Join(); t2.Join(); Console.ReadLine(); } public Class1() { s = "0"; } void f1() { lock( s ) { //Monitor.Enter( s ); broj = (Convert.ToInt32( s ) + 1).ToString(); Console.WriteLine( s ); //Monitor.Exit( s ); } } void f2() { lock( s ) { //Monitor.Enter( s ); broj = (Convert.ToInt32( s ) + 1).ToString(); Console.WriteLine( s ); //Monitor.Exit( s ); } } } } Tag: Unable to Validate Data Tag: 88338
  - 24
    - Determine if assembly has a strong name Hi, I'm loading an assembly from disk (Assembly.LoadFrom) and would like to find some way of determining if the assembly was signed. Ideally I would then like to be able to compare a key file with the assembly and find out if the given key was the one it was signed with. Thanks in advance, Mike -- Mike Goatly http://www.livesoftwaresolutions.com Tag: Unable to Validate Data Tag: 88336
  - 25
    - IntPtr to a boolean in VB? Wrapping an unmanaged DLL I've got this declaration: '------------------------------------------Set Attribute Value Declare Auto Function KSetAttributeValue Lib "DCSPro4SLR.dll"_ Alias "KPDCSetAttributeValue" (ByVal inRef As IntPtr, ByVal inAttrID As Integer,_ ByVal inType As KPDCDataTypes, ByVal inAttrSize As Integer, ByVal inAttrValue As IntPtr) As Integer So, inType is an enumerator that tells the function what type (Integer, String, Boolean) inAttrValue is, or actually is pointing to. So how to I create a pointer to a boolean? I've created pointers that get passed by reference and filled by the unmanaged library, but I haven't filled a pointer myself. Thanks. Tag: Unable to Validate Data Tag: 88335

In .Net I get this error a lot but not always - "Unable to Validate Data"

It is a viewstate error.

Any ideas?

Trevor

Re: Unable to Validate Data by Bruce

Bruce
Mon Dec 13 14:29:30 CST 2004

It's certainly a possiblity, although without more details about the
context of your message, it's hard to be sure. Check out
http://support.microsoft.com/default.aspx?scid=kb;en-us;831150#appliesto

And if that doesn't help, post more information about when in the
processing the error is taking place, along with the code that is being
executed when it happens.

Bruce Johnson [.NET MVP]
http://www.objectsharp.com/blogs/bruce

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