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  • .Net - using FileIOPermission with mask in file name

    - by Max Gontar
    Hello! I would like to apply FileIOPermission on set of files using mask in file name, ex. on all txt files in folder C:\TMP: [type: FileIOPermission(SecurityAction.PermitOnly, Read = @"C:\TMP\*.txt")] class SomeClass { static void testPermissions() { Console.WriteLine("allowed action"); File.OpenRead(@"C:\TMP\1.txt"); // <--- here goes exception Console.WriteLine("denied action"); try { File.Create(@"C:\TMP\2.txt"); } catch (Exception e) { Console.WriteLine(e.Message); } finally { Console.ReadKey(); } } } This throws ArgumentException "Illegal characters in path." What is wrong? Is it possible to achieve anyway?

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  • Can't hit breakpoint in ASP.NET web app (Stop debugging in progress... popup in VS)

    - by dotnetdev
    Hi, I am trying to debug some code in my ASP.NET web app. I set a breakpoint in one of the page events of the page's codebehind, and this once came up with a special icon in place of the red breakpoint saying symbols have not been loaded and the breakpoint will not be hit. This error has not repeated itself but why can't I hit the breakpoint? Also, when I press stop, I get a popup in VS stating: Stop Debugging In Progres... Debugging is being stopped but is not yet complete. You can force debugging to stop completely, but any processes attached may terminate. This window will automatically close when debugging has completely stopped. Completely stop I also don't get the website appear in my browser either when starting to debug. :( To make things worse, I have a line of code like this in my page's codebehind: RssFeedSites = opml.Parse(filestream); I am putting the problematic breakpoint on this line. But I have a programatic breakpoint in the Parse() method of opml, but this does not get hit, either. Thanks

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  • capture webcam stream and send it over network using DirectShow.net

    - by SR Dusad
    Hi all, I m working on a video conference project in vs2010 with c#. I m able to capture the snaps from web cam in picture box with the help of Directshownet samples available on SouceForge.But i can't find any proper solution for capturing the audio/video stream directly from web cam using Directshownet. If anybody know about this problem's solution, pls give me ur advise . Waitng for ur response ...

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  • .net OpenFileDialog changing the CurrentDirectory

    - by meowing
    Hi, I am using OpenFileDialog. But using it changes the Environment.CurrentDirectory. Using the RestoreDirectory property solves this issue, but I'm using external dlls that I can't control that don't use RestoreDirectory. Is there a way to make it true as default? Or is there any other solution to this annoying problem? Thanks.

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  • Convert Unicode char to closest (most similar) char in ASCII (.net)

    - by Andrey
    Hi all! Do you have any idea how to covert different Unicode characters to their closest ASCII equivalents? Like Ä - A. A googled but didn't find any suitable solution. Trick Encoding.ASCII.GetBytes("Ä")[0] didn't work. (Result was ?). I found that there is class Encoder that has Fallback property that is exactly for cases when char can't be converted, but implementations (EncoderReplacementFallback) are stupid and convert to ?. Any ideas? Thanks, Andrey

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  • VB.NET Debug Error

    - by Daniel
    I get this error "Illegal characters in path" for this code: Dim strm As System.IO.FileStream strm = New System.IO.FileStream(filepath, IO.FileMode.Open, IO.FileAccess.Read)

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  • Configuring Cruise Control Net with sourcesafe - Unable to load array item 'executable'

    - by albert
    Hi all, I'm trying to create a continuous integration environment. To do so, I've used a guide that can be found at http://www.15seconds.com/issue/040621.htm. In this step by step, the goal is to create a CI with CCNet, NAnt, NUni, NDoc, FxCop and source safe. I've been able to create my build by using the command prompt (despite the the different versions issues). The problem has come with the configuration of ccnet.config I've made some changes because of the new versions, but I'm still getting errors when starting the CCNet server. Can anyone help me to fix this issue or point where to find a guide with this scenario? The error that I'm getting: Unable to instantiate CruiseControl projects from configuration document. Configuration document is likely missing Xml nodes required for properly populating CruiseControl configuration. Unable to load array item 'executable' - Cannot convert from type System.String to ThoughtWorks.CruiseControl.Core.ITask for object with value: "\DevTools\nant\bin\NAnt.exe" Xml: E:\DevTools\nant\bin\NAnt.exe My CCNet config file below: <cruisecontrol> <project name="BuildingSolution"> <webURL>http://localhost/ccnet</webURL> <modificationDelaySeconds>10</modificationDelaySeconds> <triggers> <intervaltrigger name="continuous" seconds="60" /> </triggers> <sourcecontrol type="vss" autoGetSource="true"> <ssdir>E:\VSS\</ssdir> <executable>C:\Program Files\Microsoft Visual SourceSafe\SS.EXE</executable> <project>$/CCNet/slnCCNet.root/slnCCNet</project> <username>Albert</username> <password></password> </sourcecontrol> <prebuild type="nant"> <executable>E:\DevTools\nant\bin\NAnt.exe</executable> <buildFile>E:\Builds\buildingsolution\WebForm.build</buildFile> <logger>NAnt.Core.XmlLogger</logger> <buildTimeoutSeconds>300</buildTimeoutSeconds> </prebuild> <tasks> <nant> <executable>E:\DevTools\nant\bin\nant.exe</executable> <nologo>true</nologo> <buildFile>E:\Builds\buildingsolution\WebForm.build</buildFile> <logger>NAnt.Core.XmlLogger</logger> <targetList> <target>build</target> </targetList> <buildTimeoutSeconds>6000</buildTimeoutSeconds> </nant> </tasks> <publishers> <merge> <files> <file>E:\Builds\buildingsolution\latest\*-results.xml</file> </files> </merge> <xmllogger /> </publishers> </project> </cruisecontrol> enter code here

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  • Debug checklists/Helpers with Visual Studio/.NET

    - by hmm
    I have STAThread process which when called from my process simply bombs with no exceptions and almost nothing in the call stack. If I click Cntrl+Alt+E, I get an exceptions window, how can I use it in this situation, seems like some exception is not being caught here. Also what other debugging aids can I use here in Visual Studio 2010?

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  • How to reuse socket in .NET?

    - by Hermann
    I am trying to reconnect to a socket that I have disconnected from but it won't allow it for some reason even though I called the Disconnect method with the argument "reuseSocket" set to true. _socket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp); _socket.Connect(ipAddress, port); //...receive data _socket.Disconnect(true); //reuseSocket = true //...wait _socket.Connect(ipAddress, port); //throws an InvalidOperationException: Once the socket has been disconnected, you can only reconnect again asynchronously, and only to a different EndPoint. BeginConnect must be called on a thread that won't exit until the operation has been completed. What am I doing wrong?

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  • How get file names using OpenFileDialog in .NET (1000+ file multiselect)

    - by Cole
    Maybe some of you have come across this before.... I am opening files for parsing. I'm using OpenFileDialog, of course, but i'm limited to a buffer of 2048 on the .FileNames string. Thus, I can only select a few hundred files. This is OK for most cases. However, fore example, I have in one case 1400 files to open. Do you know a way to do this with the open file dialog. I just want the string array of .FileNames, I pass that to parser class. I was also thinking of offering a FolderBrowserDialog option and then I'd use some other method to just loop through all the files in a directory, like the DirectoryInfo class. I'd do this as a last resort if I can't have an all in one solution.

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  • Append XML string block WITH NAMESPACE REF to existing XmlDocument in .NET

    - by FT
    I have an xml document (XmlDocument) which looks like this... <stuff xmlns:n="hhtp://tempuri.com/"> </stuff> ... and a "fragment" (string) which looks like this <things> <thing n:type="info"> </thing> </things> I want to "inject" the fragment into the main document. How? (HINT: You can't use XmlDocumentFragment because the namespace 'n' isn't declared in the fragment, and the object model complains about this - throwing an 'unknown namespace' error even though the resultant document will be perfectly valid.)

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  • .NET Type Conversion Issue: Simple but difficult

    - by jaderanderson
    Well, the question is kinda simple. I have a object defined as: public class FullListObject : System.Collections.ArrayList, IPagedCollection And when i try to: IPagedCollection pagedCollection = (IPagedCollection)value; It don't work... value is a FullListObject... this is my new code trying to get around a issue with the "is" operator. When the system tests (value is IPagedCollection) it never gets true for FullListObject. How to cast the object to another object with a interface type?

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  • Setting System.Drawing.Color through .NET COM Interop

    - by Maxim
    I am trying to use Aspose.Words library through COM Interop. There is one critical problem: I cannot set color. It is supposed to work by assigning to DocumentBuilder.Font.Color, but when I try to do it I get OLE error 0x80131509. My problem is pretty much like this one: http://bit.ly/cuvWfc update: Code Sample: from win32com.client import Dispatch Doc = Dispatch("Aspose.Words.Document") Builder = Dispatch("Aspose.Words.DocumentBuilder") Builder.Document = Doc print Builder.Font.Size print Builder.Font.Color Result: 12.0 Traceback (most recent call last): File "aaa.py", line 6, in <module> print Builder.Font.Color File "D:\Python26\lib\site-packages\win32com\client\dynamic.py", line 501, in __getattr__ ret = self._oleobj_.Invoke(retEntry.dispid,0,invoke_type,1) pywintypes.com_error: (-2146233079, 'OLE error 0x80131509', None, None) Using something like Font.Color = 0xff0000 fails with same error message While this code works ok: using Aspose.Words; namespace ConsoleApplication1 { class Program { static void Main(string[] args) { Document doc = new Document(); DocumentBuilder builder = new DocumentBuilder(doc); builder.Font.Color = System.Drawing.Color.Blue; builder.Write("aaa"); doc.Save("c:\\1.doc"); } } } So it looks like COM Interop problem.

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  • Printing a PDF in .NET

    - by Chris Marasti-Georg
    It's the "printing question guy" again. Looking for a third-party solution to print PDFs, preferable from a service. I have seen some arguments against it, but due to our use case, this really is the preferred solution - the service will be receiving messages from a messaging bus, and there shouldn't be any sort of delay between the receipt of that message and the printing of the report. So far, I've found 1 solution from PDF Tools that seems very nice, and very flexible. The problem is that it's licensed per server. If anyone knows of any third-party solutions that have a seat license (per developer, unlimited runtime distribution), that would be much preferred. EDIT: Clarification, by printing, I mean sending the PDF to a printer.

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  • How can I make a server log file available via my ASP.NET MVC website?

    - by Gary McGill
    I have an ASP.NET MVC website that works in tandem with a Windows Service that processes file uploads. For easy maintenance of the site, I'd like the log file for the Windows Service to be accessible (to me, only) via the website, so that I can hit http://myserver/logs/myservice to view the contents of the log file. How can I do that? At a guess, I could either have the service write its log file in a "Logs" folder at the top level of the site, or I could leave it where it is and set up a virtual directory to point to it. Which of these is better - or is there another, better way? Wherever the file is stored, I can see that there's going to be another problem. I tried out the first option (Logs folder in my website), but when I try to access the file via HTTP I get an error: The process cannot access the file 'foo' because it is being used by another process. Now, I know from experience that my service keeps the file locked for writing while it's running, but that I can still open the file in Notepad to view the current contents. (I'm surprised that IIS insists on write access, if that's what's happening). How can I get around that? Do I really have to write a handler to read the file and serve it to the browser myself? Or can I fix this with configuration or somesuch? PS. I'm using IIS7 if that helps.

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  • Working with .NET Project Files and Schemas?

    - by Mitchel Sellers
    I'm working on a project that will require me to take various .vbproj and .csproj files and determine which version of Visual Studio they were built with and then to get information such as the output dll name etc. Does anyone know if there is a schema available for these files? Google and MSDN searches are coming up a bit blank.

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  • vb.net pdf reader load problem

    - by steve
    From the tools menu I have done right clickchoose itemCOM (tab) and ticked adobe pdf reader. From here I simply dragged the pdf tool onto my form. That's all I've done. Now on form load it throws a bug. "InvalidOperationException was unhandled" hovering over the message it says the following, An error occurred creating the form. See Exception.InnerException for details. The error is: Class not registered (Exception from HRESULT: 0x80040154 (REGDB_E_CLASSNOTREG)) Any ideas anyone? Gonna take a mastermind to work this one out seriously

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  • .NET 3.5: Dynamically adding classes without recompiling

    - by Nir
    I'd like to build an infrastructure that will monitor a server and check ping, response time, and more. The catch is that future checks (for example: does a certain file exist) will be added without recompiling the infrastructure. How do I build it in such a way that will enable me to attach inherited classes with different functionality, and execute them without recompiling? Thanks!

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  • N-Tier Architecture - Structure with multiple projects in VB.NET

    - by focus.nz
    I would like some advice on the best approach to use in the following situation... I will have a Windows Application and a Web Application (presentation layers), these will both access a common business layer. The business layer will look at a configuration file to find the name of the dll (data layer) which it will create a reference to at runtime (is this the best approach?). The reason for creating the reference at runtime to the data access layer is because the application will interface with a different 3rd party accounting system depending on what the client is using. So I would have a separate data access layer to support each accounting system. These could be separate setup projects, each client would use one or the other, they wouldn't need to switch between the two. Projects: MyCompany.Common.dll - Contains interfaces, all other projects have a reference to this one. MyCompany.Windows.dll - Windows Forms Project, references MyCompany.Business.dll MyCompany.Web.dll - Website project, references MyCompany.Business.dll MyCompany.Busniess.dll - Business Layer, references MyCompany.Data.* (at runtime) MyCompany.Data.AccountingSys1.dll - Data layer for accounting system 1 MyCompany.Data.AccountingSys2.dll - Data layer for accounting system 2 The project MyCompany.Common.dll would contain all the interfaces, each other project would have a reference to this one. Public Interface ICompany ReadOnly Property Id() as Integer Property Name() as String Sub Save() End Interface Public Interface ICompanyFactory Function CreateCompany() as ICompany End Interface The project MyCompany.Data.AccountingSys1.dll and MyCompany.Data.AccountingSys2.dll would contain the classes like the following: Public Class Company Implements ICompany Protected _id As Integer Protected _name As String Public ReadOnly Property Id As Integer Implements MyCompany.Common.ICompany.Id Get Return _id End Get End Property Public Property Name As String Implements MyCompany.Common.ICompany.Name Get Return _name End Get Set(ByVal value as String) _name = value End Set End Property Public Sub Save() Implements MyCompany.Common.ICompany.Save Throw New NotImplementedException() End Sub End Class Public Class CompanyFactory Implements ICompanyFactory Public Function CreateCompany() As ICompany Implements MyCompany.Common.ICompanyFactory.CreateCompany Return New Company() End Function End Class The project MyCompany.Business.dll would provide the business rules and retrieve data form the data layer: Public Class Companies Public Shared Function CreateCompany() As ICompany Dim factory as New MyCompany.Data.CompanyFactory Return factory.CreateCompany() End Function End Class Any opinions/suggestions would be greatly appreciated.

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  • Efficiently Combine MatchCollections in .Net Regex

    - by Laramie
    In the simplified example, there are 2 Regular Expressions, one case sensitive, the other not. The idea would be to efficiently create an IEnumerable collection (see "combined" below) combining the results. string test = "abcABC"; string regex = "(?<grpa>a)|(?<grpb>b)|(?<grpc>c)]"; Regex regNoCase = new Regex(regex, RegexOptions.IgnoreCase); Regex regCase = new Regex(regex); MatchCollection matchNoCase = regNoCase.Matches(test); MatchCollection matchCase = regCase.Matches(test); //Combine matchNoCase and matchCase into an IEnumerable IEnumerable<Match> combined= null; foreach (Match match in combined) { //Use the Index and (successful) Groups properties //of the match in another operation } In practice, the MatchCollections might contain thousands of results and be run frequently using long dynamically created REGEXes, so I'd like to shy away from copying the results to arrays, etc. I am still learning LINQ and am fuzzy on how to go about combining these or what the performance hits to an already sluggish process will be.

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  • Surprising results with .NET multi-theading algorithm

    - by Myles J
    Hi, I've recently wrote a C# console time tabling algorithm that is based on a combination of a genetic algorithm with a few brute force routines thrown in. The initial results were promising but I figured I could improve the performance by splitting the brute force routines up to run in parallel on multi processor architectures. To do this I used the well documented Producer/Consumer model (as documented in this fantastic article http://www.albahari.com/threading/part2.aspx#_ProducerConsumerQWaitHandle). I changed my code to create one thread per logical processor during the brute force routines. The performance gains on my work station were very pleasing. I am running Windows XP on the following hardware: Intel Core 2 Quad CPU 2.33 GHz 3.49 GB RAM Initial tests indicated average performance gains of approx 40% when using 4 threads. The next step was to deploy the new multi-threading version of the algorithm to our higher spec UAT server. Here is the spec of our UAT server: Windows 2003 Server R2 Enterprise x64 8 cpu (Quad-Core) AMD Opteron 2.70 GHz 255 GB RAM After running the first round of tests we were all extremely surprised to find that the algorithm actually runs slower on the high spec W2003 server than on my local XP work station! In fact the tests seem to indicate that it doesn't matter how many threads are generated (tests were ran with the app spawning between 2 to 32 threads). The algorithm always runs significantly slower on the UAT W2003 server? How could this be? Surely the app should run faster on a 8 cpu (Quad-Core) than my 2 Quad work station? Why are we seeing no performance gains with the multi-threading on the W2003 server whilst the XP workstation tests show gains of up to 40%? Any help or pointers would be appreciated. Regards Myles

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  • Automating ftp command line application redirecting I/O in .Net

    - by SoMoS
    Hello, I'm trying to automate the ftp client that Windows includes redirecting the I/O from the process. What I'm doing is starting the process from my application and trying to read what the client prints on the screen and sending my commands to it. The problem is that I can not read almost any data sent by the ftp client. Some data is present but most data is not read. That's the code I have until now. Public Sub Start() process = New Diagnostics.Process() process.StartInfo.FileName = "ftp.exe" #'' The command is on the path process.StartInfo.CreateNoWindow = True process.StartInfo.RedirectStandardInput = True process.StartInfo.RedirectStandardOutput = True process.StartInfo.UseShellExecute = False process.Start() process.StandardInput.AutoFlush = True process.BeginOutputReadLine() End Sub #'' takes data from the stdout Private Sub process_OutputDataReceived(ByVal sender As Object, ByVal e As System.Diagnostics.DataReceivedEventArgs) Handles process.OutputDataReceived #'' At this moment here there is code to show the stdout at a textbox End Sub #'' sends data to stdin Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click process.StandardInput.WriteLine(Me.TextEdit1.Text) End Sub Now when I execute this for example and send ? I just get the first line (and I should get a lot more). Or when I send the open command I should receive an A but nothing is received. Any ideas? Another question is ... when a console applications writes on the screen it always does that by writing at the stdout or the stderr isn't it?

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  • Having two ODP.NET (ODAC) versions in the same server

    - by vizcaynot
    Hello: Some months ago, a colleague of mine installed ODAC 11.106.21 in a server using XCOPY and then he developed many applications that use this client without problems (in test and production windows servers). Past week, I developed an application under ODAC 11.1.07.20. When I asked him to install these new ODAC version using XCOPY in a different folder and then include my application in the test server, he answered me that I should use ODAC 11.106.21 because he could have troubles with his applications. So I would like to know: 1) If it is really possible to have two different ODAC versions in one server. 2) If the answer is positive, how can I firmly ensure to my colleague that he will not have troubles with his applications? 3) If the answer is positive, is this necessary to do some kind of configuration in the server? Thanks!!

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  • .NET Working with Locking and Threads

    - by aherrick
    Work on this small test application to learn threading/locking. I have the following code, I would think that the line should only write to console once. However it doesn't seem to be working as expected. Any thoughts on why? What I'm trying to do is add this Lot object to a List, then if any other threads try and hit that list, it would block. Am i completely misusing lock here? class Program { static void Main(string[] args) { int threadCount = 10; //spin up x number of test threads Thread[] threads = new Thread[threadCount]; Work w = new Work(); for (int i = 0; i < threadCount; i++) { threads[i] = new Thread(new ThreadStart(w.DoWork)); } for (int i = 0; i < threadCount; i++) { threads[i].Start(); } // don't let the console close Console.ReadLine(); } } public class Work { List<Lot> lots = new List<Lot>(); private static readonly object thisLock = new object(); public void DoWork() { Lot lot = new Lot() { LotID = 1, LotNumber = "100" }; LockLot(lot); } private void LockLot(Lot lot) { // i would think that "Lot has been added" should only print once? lock (thisLock) { if(!lots.Contains(lot)) { lots.Add(lot); Console.WriteLine("Lot has been added"); } } } }

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  • How to split string in group in vb.net

    - by amol kadam
    Hi. i'm amol kadam,I want to know how to split string in two part.My string is in Time format (12:12).& I want to seperate this in hour & minute format.the datatype for all variables are string. for hour variable used strTimeHr & for minute strTimeMin .I tried below code but their was a exception "Index and length must refer to a location within the string. Parameter name: length" If Not (objDS.Tables(0).Rows(0)("TimeOfAccident") Is Nothing Or objDS.Tables(0).Rows(0)("TimeOfAccident") Is System.DBNull.Value) Then strTime = objDS.Tables(0).Rows(0)("TimeOfAccident") 'strTime taking value 12:12 index = strTime.IndexOf(":") 'index taking value 2 lastIndex = strTime.Length 'Lastindex taking value 5 strTimeHr = strTime.Substring(0, index) 'strTime taking value 12 correctly strTimeMin = strTime.Substring(index + 1, lastIndex) 'BUT HERE IS PROBLEM OCCURE strTimeMin Doesn't taking any value Me.NumUpDwHr.Text = strTimeHr Me.NumUpDwMin.Text = strTimeMin End If

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