Stream

.NET Base Class Library

- Previous
  - 1
    - P2P Networking Woes I'm currently working on a chat/communication program which implements a P2P-style networking paradigm. (The main server indexes all signed users, and clients look each other up and manage their own conversations.) All my code involving communications directly with the server is done, but I'm having trouble trying to work out how to manage the multiple conversations. My concept so far is as such: An object of class 'Protocol' performs all communications with the server, and contains a 'ConversationManager' object, which contains a list of 'Conversation' objects. Conversation objects do not contain connections themselves, but register with their respective ConversationManagers, which listens to all other users over one port (and one TcpListener). When a message arrives, it source is checked and it is routed to its respective Converation object, which handles the message itself. The problem is in the ConversationManager class. I can't figure out how I can manage multiple connection on one thread without opening and closing the connection for each message. If I loop through the clients one by one and read from them, the blocking nature of network connections, this could prove problematic. Is there some simple way to manage these connections on one thread, or would it more efficient to open up a new thread for each one Or more importantly, is there anything I should know about managing multiple connections on one port and its implications Tag: .NET Base Class Library Stream .NET Development
  - 2
    - access class library from jscript how do i call a c# class library (.dll) from jscript. i wrote the dll and it resides on my machine. i need to access it from jscript, invoke a function and do something with the return value. how do i do it thanks. Tag: .NET Base Class Library Stream .NET Development
  - 3
    - distinct values in dataset I have populated a dataset with one table. The data in the table looks as follows: Index1Name Index2Name City Value Indexk Indexk city1 2 Indexk Indexk city1 3 Indexk Indexd city1 2 Indexk Indexy city1 1 Indexy Indexk city1 1 Indexx Indexk city1 Indext Indexq city1 5 Indexs Indexs city1 6 Now I would like to have an array which gets populated from the distinct values in columns of Index1Name and Index2Name So the array should contain something like: Indexd Indexk Indexy Indexx Indext Indexs Indexq Thanks Tag: .NET Base Class Library Stream .NET Development
  - 4
    - How to develop Webservice client without WSDL file? Hello : I could successfully communicate with Java Web Service by way of VS 2005 tools to generate a webservice proxy through general way to call Java webservice Url like:http://localhost/Sample/Sample WSDL The problem is that There is an urgent project for me to connect to another java WebService. The Java webservice is developed by thirdy party and they did not provide WSDL file yet but they provide the webmethod on some documents. The WebServer did not support GET but only allow POST method. Now I am trying to develop a win form client to connect to the WebService. I want to send SOAP message directly to that Java WebService but I did not have any idea to begin. There are many examples in VS 2005 by way of adding web references through WSDL file but I did not find examples to communicate with web service directly from Xml Soap message. is there any tutorial or examples Regards, Daniel Lee 2006/12/8 Tag: .NET Base Class Library Stream .NET Development
  - 5
    - Are DataAdapters and TableAdapters applicable to SqlServer? or only to ADO.NET meaning ODBC and OleDb Thanks. Tag: .NET Base Class Library Stream .NET Development
  - 6
    - Differences between dbgclr and mdbg when looking at variables in IronPython scripts... Using ths brilliant script: import clr reallyuniquename = 12354 class myclass(): def __init__(self): a = raw_input("%") self.selfuniquename = 654321 uniquename = "uniquestuff" mc = myclass() a = raw_input(":") print "all done" And running it with ipy.exe (version 2, alpha 5) I get really different results when looking at variables in mdbg and dbgclr. For instance if I set a breakpoint in dbgclr on the line 'uniquename = "uniquestuff" and look at the locals I get: $context self Dictionary SymbolAttributes [0] and here I see uniquename set to uniquestuff yeah! uniquename $line retval where my indents indicate that I can drill down. In mdbg I get: a uniquename $line retval $context self __dict__ _keyVersion _extraKeys _values _data _nullObject ObjectKeys __class__ _weakRef I cannot find a way to find uniquename/uniquestuff. I cannot even print $context because mdbg aparently thinks it is some sort of internal variable. Why are the two debuggers showing such different results And of course the one that is 'wrong' is the one I want to use and the one that is right is closed. Thanks, David P.S. will there be a new version of mdbg with 'better behavior' soon I have seen references to a newer version - bug no timetable. Thanks! Tag: .NET Base Class Library Stream .NET Development
  - 7
    - Problem with sending UDP to Apple macs :( Guys I've met with a weird problem. Few years ago I wrote VB6 client-server project, later a third party developer wrote client app for Apple Mac. It was working fine until we rewrote the server part in VB.NET Problem: Macs seems to be unable to receive the UDP data sent by server from vb.net code I send it using UdpClient Code Snippet Dim MySocket As New UdpClient() MySocket.Send(DataArray, DataArray.Length, IpAddress, Port) When I send the same data from VB6 code it works fine! When I send the same data from VB.NET to PC it also works fine.... It is really confused me, is VB6 Winsock control sends the same data in a different way Unfortunately I'm unable to debug the Mac client to have look what it receives so only thing left is to guess.... Any ideas Tag: .NET Base Class Library Stream .NET Development
  - 8
    - Writing a Network Scanner I was wondering if anyone knows of any network scanning libraries out there for .NET I am writing an application and I want to be able to enter a subnet and scan it for LAN devices. If no one knows of any I was looking at doing this using the Ping class however I wasn't sure how to resolve the hostname easily from this. Any help would be greatly appreciated. Tag: .NET Base Class Library Stream .NET Development
  - 9
    - Detect Oracle user privileges Hi. Can I detect Oracle user privilegies for specified table at run-time I using OracleConnection standart class for development. Thank you. Tag: .NET Base Class Library Stream .NET Development
  - 10
    - reading a text file. dear all I have a text file with data like 0.923 0.710 0.534 0.786 1.237 1.309 0.977 0.704 0.727 1.350 1.866 2.369 2.632 2.452 1.852 1.235 0.981 0.923 0.570 0.406 0.271 0.443 0.785 0.869 0.649 0.458 0.498 1.396 2.122 2.590 2.569 2.150 1.538 0.978 0.681 0.570 values are seperated with spaces and lines separated by newline. How to read these values I open the text file using Streamreader and when I use the ReadLine property it will read the full line but I want to read the single values. Thanks in advance, prasad. Tag: .NET Base Class Library Stream .NET Development
  - 11
    - Help ... ISymUnmanagedBinder2::GetReaderForFile2(...) returning 0x806D0005 Hi, I'm getting a HResult return of 0x806D0005 from the above method and I can not find any documentation that defines what the error code means... Can someone from Microsoft fill in the blanks here for me... Thanks Dave.Net Tag: .NET Base Class Library Stream .NET Development
  - 12
    - (XslCompiledTransform) Cannot process XML containing DTD WHAT I'M TRYING TO DO I simply want to transform an XML file using an XSLT file. But the process throws an exception with XML files referencing a DTD. My research uncovered that I must set the "ProhibitDtd " property to false. As you can see in my code sample below, I did this. For some reason, the setting wasn't effective. I suspect I am making some sort of syntax error that is resulting in an improperly set property. SYSTEM Windows 2000, Visual Basic Express 2005 ERROR MESSAGE: For security reasons DTD is prohibited in this XML document. To enable DTD processing set the ProhibitDtd property on XmlReaderSettings to false and pass the settings into XmlReader.Create method. CODE USED (EDITED FOR SIMPLICTY OF THIS POST): Imports System.Xml, System.Xml.XPath, System.Xml.Xsl Dim outputPath As String = "outputfile.xml" Dim inputPath As String = "inputfile.xml" Dim xsltPath As String = "file.xslt" Dim xslt As New XslCompiledTransform() Dim settings As New XmlReaderSettings() settings.ProhibitDtd = False xslt.Load(XmlReader.Create(xsltPath, settings)) xslt.Transform(xmlpath, outputPath) CONCLUSION I have seen this issue come up for mostly C# coders and I tried all the things they suggested there. I just can't get the ProhibitDtd property=false to stick. What's going on! Thanks! Tag: .NET Base Class Library Stream .NET Development
  - 13
    - Web Service Progress and Logging Hi, I've been trying to write a soap extension that allows me to log the raw soap traffic for a web service and track the upload/download progress. I've modified the code from this article... http://msdn2.microsoft.com/en-us/library/aa480520.aspx I have not problem with the response part of the message and I'm able to log it and give an update on the progress to the user. But when I try and do the same for the request part I run into errors. Essentially the stream that I get from the first ChainStream() call does not support reading. It throws an exception when I try to read it. The exception is: "The stream does not support reading." at System.Net.ConnectStream.Read(Byte[] buffer, Int32 offset, Int32 size) at System.Web.Services.Protocols.SoapExtensionStream.Read(Byte[] buffer, Int32 offset, Int32 count) etc. Any help would be appreciated, Colin Tag: .NET Base Class Library Stream .NET Development
  - 14
    - ASP.NET PostBack simulation Hi, I would like to simulate a postback on an asp.net page. I explain myself, let's say i have a page with an asp "form" so the postback is performed on the submit button click with: _WebForm_DoPostBackWithOptions(...) -> __doPostBack(...) I would like to perform the same request but with an xmlhttprequest object. i found that, in fact, i need to send by post method the values of __VIEWSTATE, __EVENTTARGET and __EVENTARGUMENT. Actually i know that my eventtarget is the submit link name and the event argument is empty (in my case). The view state is an hidden field in the page. I understood that __VIEWSTATE contains the (serialized ) values of the active controls in the page, so by sending the viewstate the page will be able to find the values and perform the correct operations. So how is generated this field before the "send" operation If anybody knows it could really help me. If im wrong in one of the statements i wrote, please tell me Thank you by advance Clement Tag: .NET Base Class Library Stream .NET Development
  - 15
    - Deserializing custom collection My custom collection inherits from System.Collections.CollectionBase I can setrailize it well but when i try to desrialize i get nothing back. do i need to apply ant attribute Tag: .NET Base Class Library Stream .NET Development
  - 16
    - Using Windows Auth in SqlServer Hi, I have SqlServer on one of the Network machine, on which I have Windows Authentication rights available. Now when I try to build Sqlconnection it gives me an error: "Login failed for user '(null)'. Reason: Not associated with a trusted SQL Server connection. " I have set the following attributes: persist security info=False; Trusted_Connection=yes" When I checked it somewhere I came to know that we must have SQL server and IIS Server on the same machine in order to build a sqlconnection using win auth.. Is that right or we have some other way round to achieve this Thanks in Advance Tag: .NET Base Class Library Stream .NET Development
- Next
  - 1
    - COMException Error:8000401a I have built an OPC client, which is started from a service, that will connect to an OPC server using COM interop. When the com-object is about to be created, by Activator.CreateInstance(Type), I get the following COMException when I'm connected to Windows Server 2003 via remote desktop. Exception Type: System.Runtime.InteropServices.COMException ErrorCode: -2147467238 Message: Retrieving the COM class factory for component with CLSID {B6EACB30-42D5-11D0-9517-0020AFAA4B3C} failed due to the following error: 8000401a. If I log on to the server with "mstsc /console" everything works fine. Everything also works fine if I start the OPC client directly and not from the service. Do anyone have any ideas Tag: .NET Base Class Library Stream .NET Development
  - 2
    - Sockets? how can i get the first line in a www file eg. file = app.txt line 1 = first line text host = www.domain.com/app.txt - now can i get first line without download the file Tag: .NET Base Class Library Stream .NET Development
  - 3
    - .NET Runtime 2.0 Error Event ID 5000 We are running OPS Manager 2007 and I started getting this error message. Everytime I open up MOM console it gives me this error message with evet id 5000. "EventType clr20r3, P1 microsoft.mom.ui.console.exe, P2 6.0.4900.0, P3 45fbf308, P4 microsoft.enterprisemanagement.ui.authoring, P5 6.0.4900.0, P6 45fb7b91, P7 24ad, P8 1d, P9 system.nullreferenceexception, P10 NIL" Thanks Kaiser A Tag: .NET Base Class Library Stream .NET Development
  - 4
    - Video conference using xml webservice please i need help in how to make Video conference using xml webservice with C# Tag: .NET Base Class Library Stream .NET Development
  - 5
    - How to redeploy the .NET Framework with my application? So you��ve spent some time creating the next stupendous.NET Framework application. Now what Applications that were built against a . NET Framework need the corresponding/compatible .NET Framework runtime installed on the machine that will run the application. To do this effectively, please reference the following guides for deploying the .NET Framework with your application: .NET Framework Version 3.5 Deployment Guide http://msdn2.microsoft.com/en-us/library/cc160716.aspx .NET Framework Version 3.5 Admin Deployment Guide http://msdn2.microsoft.com/en-us/library/cc160717.aspx .NET Framework Version 3.0 Deployment Guide http://msdn2.microsoft.com/en-us/library/aa480173.aspx .NET Framework Version 2.0 Deployment Guide http://msdn2.microsoft.com/en-us/library/aa480237.aspx .NET Framework Version 1.1 Deployment Guide http://msdn2.microsoft.com/en-us/library/ms994339.aspx .NET Framework Version 1.0 Deployment Guide http://msdn2.microsoft.com/en-us/library/ms994336.aspx NOTE: .NET Framework Version 1.0 is part of the Tablet/Media Center Windows OS. .NET Framework version 1.1 is part of the Windows2003 Server OS. .NET Frameworks Version 2.0 and Version 3.0 are part of Windows Vista OS. For further reading and additional ideas for deploying the .NET Framework, see http://blogs.msdn.com/astebner/articles/574618.aspx Tag: .NET Base Class Library Stream .NET Development
  - 6
    - populate access database from a TableCollection Hi, I need to ask about how can I populate an access database tables directly with the tables in a TableCollection that already exist in my application. Thanks for any help, Aya. Tag: .NET Base Class Library Stream .NET Development
  - 7
    - Some C# code for terminating programs Hey everyone. I want a C# program that terminates a currently running program using the name of the program as argument. For ex. If I want to close the Internet Explorer process running currently, i can call the terminate function with the name "IExplore.exe". I found some VBscript codes in MSDN but i need C# code. I think it has to do something with System.Management. I'm a rookie in C# and would really appreciate any help. Thank you. Tag: .NET Base Class Library Stream .NET Development
  - 8
    - Saving richtext into ntext-field of sql-server Hi! Just started my first programming steps. All looks fine and it seems to be fun. But now I've got a Problem: I'm trying to save a richtext out of a richtextbox oject into a ntext field on sql-server. I'm using a stored prcedure which I fill with parameters. (Yes - there is a better way - but right now, this is good enough for playing around) everything works but the rtf-part. I'm sure, that I'll have to do something with the RTF-thing - but what The error tells me, that I should use Convert to transfer the RTF-String. But this does not do the job either. Here is the code: private void save() { SqlCommand cmdsql = new SqlCommand(); cmdsql.Connection= this .consql; cmdsql.CommandType= System.Data.CommandType.StoredProcedure; cmdsql.CommandText="UpdatePrufpunkt"; cmdsql.Parameters.Add("@bwk_PrufpunktID", this .onum_PrufpunktID.Value); cmdsql.Parameters.Add("@fb_PP_OK", this .ochk_OK.Checked); cmdsql.Parameters.Add("@fb_PP_VL", this .ochk_VL.Checked); cmdsql.Parameters.Add("@fw_PP_Glocke", this .otxt_Glocke.Text); cmdsql.Parameters.Add("@ft_PP_Ruckmeldung_bis", this .dtpBis.Value); cmdsql.Parameters.Add("@ft_PP_Ruckmeldung_erfolgt", this .dtpErfolgt.Value); cmdsql.Parameters.Add("@fs_PP_Kurznotiz", this .otxt_Kurznotiz.Text); // here comes the bad rtf-code ... cmdsql.Parameters.Add("@fm_PP_Notiz",Convert.ToByte( this .ortb_Notiz.RichTextBox.Rtf)); try { consql.Open(); cmdsql.ExecuteNonQuery(); this .otxt_LastChange.Text=System.DateTime.Now.ToShortDateString(); this .datachanged= false ; MessageBox.Show("Datensatz erfolgreich aktualisiert!","", System.Windows.Forms.MessageBoxButtons.OK,System.Windows.Forms.MessageBoxIcon.Information); } catch (System.Exception ex) { MessageBox.Show("Fehler: " + ex.Message,"", System.Windows.Forms.MessageBoxButtons.OK,System.Windows.Forms.MessageBoxIcon.Error); } finally { consql.Close(); } } Tag: .NET Base Class Library Stream .NET Development
  - 9
    - CLR naming conflicts I am looking for some documentation about the use of identifiers as names in CLR code, and when a name in a class conflicts with the same name of another identifier in the class hierarchy. Does anybody know where such documentation exists In particular, can the name of a property be the same as the name of a method in the class hierarchy of a class Obviously this sort of question can be extended to other CLR elements so I am trying to understand when an idenitifier conflicts with another identifier of the same name but a different CLR element. I have not been able to find such a topic in MSDN. Finally if name conflicts do occur, is it not the compiler's responsibility for any CLR language to give a compiler error flagging that conflict Tag: .NET Base Class Library Stream .NET Development
  - 10
    - Run Project on Remot Computer Hi All, I have created one vb.net project(window) for my firm. now i want to set this project to another computer How do i make this possible Thank you in advance Tag: .NET Base Class Library Stream .NET Development
  - 11
    - How to handle Angled Brackets in Text Hi, I have text values with angled brackets and it's throwing my xml out. Even as attributes, I get the error The character '<' cannot be used in an attribute value. These characters are valid data values... is there a workaround for this Thanks Rael Tag: .NET Base Class Library Stream .NET Development
  - 12
    - disabling javascript + redirecting 2 another page I am trying to redirect user to a particular page if javascript is not enabled��..i am using master page �� Sometimes what happens when user logs in and after that he disabled javascript so I want to redirect him ��. I tried to use noscript tag But in vs2005 it is not supporting meta tag ��.saying meta tag cant be inserted in noscript tag ��.also with form tag user get the choice to redirect himself or not��. This feature is perfectly implemented by yahoomail��do u hv any clue�� Tag: .NET Base Class Library Stream .NET Development
  - 13
    - Xml Serializer The .net framework try to generate runtime (using emit i suppose) all xml-serialzer, and in my application domain exist over 70 assemblies, and i need about 20 second for application startup (70% of this time is spent to generate xml-serializer). I manually build some web-service proxy using generics, and the tool for generate statically all xml serializer (sgen.exe) raise an exception when try to parse that class, and stop. Exist some way to instruct the runtime to not generate xml serialization assemblies, or better, to generate it only the first time that someone use the web service proxy Tag: .NET Base Class Library Stream .NET Development
  - 14
    - How to prevent SQL Injection with OR parameters. Good day, My method receives an arraylist of string, each string representing the first name of a client. my SELECT query is SELECT * from table1 and I build my WHERE statement dynamically like that: if (where == "" ) where += " WHERE " ; where += " FirstName like " + clientName[i ] + " " ; } else { where += " OR FirstName like " + clientName[i ] + " " ; } } return where; } to make a long story short, I concat multiple OR FirstName like clientName[i ]. However, i would prefer to do sqlComm.Parameters.AddWithValue(....) but I dont know how to procees, since I dont know the number of OR's that will be in my query. Any idea how to proceed or any better way to do that Thank you! Tag: .NET Base Class Library Stream .NET Development
  - 15
    - Unable to Install application developed in .NET Framework 1.1 Hi All, I am Lakshman Kumar S from Hyderabad.I am facing a problem in installing .NET application.Application is developed using Framework 1.1. I uninstalled the .NET Framework 1.1 and installed .NET Framework 2.0.But i am unable install the application.can u please tell,what is the problem.Please show me the solution. Thanks, Lakshman Kumar S Tag: .NET Base Class Library Stream .NET Development
  - 16
    - StreamReader.Read method fails for multi-part data transfer Hi all, I am trying to communicate with a server written in Java from .NET client app using sockets. Its working fine for last couple of years with .NET 1.1. Recently we moved to .NET 2.0 and Read method for the StreamReader starts failing in case of multi-part data transfer. Server sends data in chunks of 1024 bytes, all the chunks except the last one which is obviously less than 1024 are read. But for the last chunk e.g. in case of 1500 bytes of data its 476 the read method just hangs and then socket times out with following error Unable to read data from the transport connection: A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond. at System.Net.Sockets.NetworkStream.Read(Byte[] buffer, Int32 offset, Int32 size) I have searched through the forum postings and found a similar post. http://forums.microsoft.com/MSDN/ShowPost.aspx PostID=246774&SiteID=1 Unfortunately it doesn't provide the soulution/workaround. The code I am using is as follows. tcrClient.Connect(serverName, portNumber); tcrClient.SendTimeout = 50000; tcrClient.ReceiveTimeout = 50000; ntStream = tcrClient.GetStream(); //send the request byte [] sentBytes = Encoding.UTF8.GetBytes(outString); ntStream.Write(sentBytes, 0 , sentBytes.Length); ntStream.Flush(); reader = new StreamReader(ntStream,Encoding.UTF8); while ( true ) { if (reader.Peek() > 0) { break ; } else { Thread.Sleep(333); } } // get result back const int BUFFER_SIZE = 1024; char [] buff = new char [BUFFER_SIZE]; String temp = null ; xml = ""; do { int count = reader.Read(buff, 0, BUFFER_SIZE); temp = new String(buff, 0, count); xml += temp; } while (!temp.EndsWith(EOT)); Any help will be appreciated. I am trying to figure out the solution for a critical client release. Thanks, Niranjan Tag: .NET Base Class Library Stream .NET Development

Xaid

So here is the problem . Im into techno & trance music and there is this radio stream that i like to listen to . But at work id rather not use network bandwith to get the music. So Im looking for a way to record music from the stream . I was thinking maybe to make a buffer then have my music thrown into the buffer then have the buffer saved. Ideally i would like to import the .pl file . Hit a button to start capture then a button to stop capture. Any ideas / websites

Re: .NET Base Class Library Stream

cablehead

http://www.un4seen.com/

Re: .NET Base Class Library Stream

Xaid

^^^ nice but i'd so much rather make it myself. I'd like to learn the workings behind it. And would use this in future work.

Re: .NET Base Class Library Stream

Xaid

I've asked this question at other forums and no 1 seems to be able to answer it hmm.

Re: .NET Base Class Library Stream

ahmedilyas

either way you are using network traffic/bandwidth since its going to be getting data from the stream - its going to be accessing the stream and getting data (using bandwidth)

you could also check out an app I made a while back called DAR~ling on my site (weblink on my profile) - its a Digital Audio Recorder that records audio, with an optional url stream to record from, from a scheduled time.