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Re: Rotate images with links e_akhras23-Apr-06 6:17 e_akhras 23-Apr-06 6:17  hi Amal, please clarify the terms you used: "rotate", "cycle" and "link" did you mean with "rotate" turning clockwise and counter-clockwise an image canvas ? or did you mean some sort of a CROSS JOIN between two entities ? write in arabic if you like. best regards. Re: Rotate images with links Amalarajan24-Apr-06 1:18 Amalarajan 24-Apr-06 1:18  my project likes encanrta 2005 interface . rotate -clockwise or unti clock wise in Encarta 2005 images have been rotating with links,that each links has own information plese urgent Amal Re: Rotate images with links sudharsong23-Apr-06 22:33 sudharsong 23-Apr-06 22:33  hi why don't u use an adrotator control. hi to all with regards, susa Synchronization with C# Lilla8823-Apr-06 3:37 Lilla88 23-Apr-06 3:37  Does anyone know how to synchronize two databases (prefarebly mySQL) on different servers through C#? What confuses me most is the comparing of the two databases. Note that the two databases can have the same data due to previous synchronizations. Also, the two databases can have different data but the same primary key. Thank you Elaine Re: Synchronization with C# Graham Nimbley24-Apr-06 14:39 Graham Nimbley 24-Apr-06 14:39  Sounds like you need to look up System.Data.DataSet[^] Graham Generate documentation JensB23-Apr-06 2:40 JensB 23-Apr-06 2:40  Hi, I already worked with C# a while and I'd like to generate documentation. I've seen you can use '///' to add info in XML-style. So the XML can be parsed by using for example NDoc. Is NDoc the best tool to use to generate C# Documentation? Any other software that I should use? (NDoc projet is not being update lately...) Any advice/suggestions are welcome Greetings, Jens Re: Generate documentation CWIZO23-Apr-06 3:54 CWIZO 23-Apr-06 3:54  I think NDoc is the best choice. -------------------------------------------------------- My development blog Q:What does the derived class in C# tell to it's parent? A:All your base are belong to us! Re: Generate documentation Graham Nimbley24-Apr-06 14:43 Graham Nimbley 24-Apr-06 14:43  I second NDoc, but as you have noticed they haven't released a binary for a while. Although there are currently working on a release for 2.0 framework features (like generics). I have a few c# 2.0 projects which could do with this. Getting error: There is already an open DataReader associated with this Command which must be closed first. emran83423-Apr-06 1:21 emran834 23-Apr-06 1:21  Hello, Thanks for your time to read my request for a help. I developed my windows application with C#, which has many background workers working at the same time, opening and closing sql databases, modifying sql tables etc. Now, very often I get this error message, " There is already an open DataReader associated with this Command which must be closed first.". I dont know why its happenning sometimes and sometimes not. Is that the reason one thred and another thread conflicting each other when they try to read or modify same sql database ? And sometimes, I get some weired error saying "in order to execute the sqlcommand, connection must be open. ", And I dont see any reason why connection is getting closed before that sqlcommand execution. Now I had to place if(myConn.State == ConnectionState.Close) myConn.Open() ; before every sqlcommand. Even after that I am getting same error sometimes. Can anyone please give me some clue to solve and seal this problem permanently. Thanks and regards emran Re: Getting error: There is already an open DataReader associated with this Command which must be closed first. Guffa23-Apr-06 1:56 Guffa 23-Apr-06 1:56  You can have any number of connections open to the database, so that is not the problem. The problem is most likely how you use the connection objects in your code. You can't share connetions between threads. --- b { font-weight: normal; } it's a ADO.NET limitation ! e_akhras23-Apr-06 6:09 e_akhras 23-Apr-06 6:09  the exception you're getting is probably when executing SQLCommands using "ExecuteDataReader" and openning the datareader while another data reader is already opened in another thread. example of creating the exception: thread 1 executes: SqlDataReader dr = LocalSqlCommand.ExecuteDataRead(); dr.Open(); ... in the same time thread 2 tries to execute the same symmantec: SqlDataReader dr = LocalSqlCommand.ExecuteDataRead() dr.Open() -> this will generate the exception... its a .NET limitation to open only one DataReader per application !!! a workaround: - always close the dataReader when finished by executing: dr.Close() - try raising a flag between threads (mutex) so they block each other while they open and close DataReaders best regards Re: it's a ADO.NET limitation ! Guffa23-Apr-06 6:38 Guffa 23-Apr-06 6:38  eyad al akhras wrote: its a .NET limitation to open only one DataReader per application !!! No, not per application, but per connection. Not really a limitation, as you easily can open as many connections as you like. --- b { font-weight: normal; } Re: it's a ADO.NET limitation ! emran83423-Apr-06 9:42 emran834 23-Apr-06 9:42  Hello, Thanks for your reply. Actually I am using same instance of sqlconnection all over my code because, when I used different instance of sqlconnection, I face another problem. If One connection made a change in the database, another connection doesn't reflect the change. It still retrieive old values from SQL unless that connection itself did not do the changes in SQL. Is there any way to synchronize all changes made by different sql connection instances ? Re: it's a ADO.NET limitation ! e_akhras24-Apr-06 2:51 e_akhras 24-Apr-06 2:51  you're right Guffa, appologies for wrong contribution. Re: it's a ADO.NET limitation ! emran83423-Apr-06 9:50 emran834 23-Apr-06 9:50  Hello eyad al akhras , Thanks a lot for the reply. Actually in one of my thread, I have a dataGrid bounded with a daasource, so, my application is considering that databounded datagrid as an open active datareader. And at the same time another thread is executing SQL command. And sometimes, When another thread is executing SQL command, when I try to click Update (or SAve) button of a databinding navigator (for my datagridview) I get the same error saying "already datareader open.". Is there any snippet available to solve this problem either using mutext or something else. I have never used lock, mutex etc in my code, I dont know how to use those. Thanks and regards Emran two articles e_akhras24-Apr-06 3:27 e_akhras 24-Apr-06 3:27  read these two article, found when searching codeProject for "Threads": - "Synchronization Basics and Concept of Using a Synchronized Wrapper" at http://www.codeproject.com/csharp/syncroot.asp - and, for a Thread starter article: "Understanding Threading in .NET Framework" at http://www.codeproject.com/csharp/threadinginnet.asp I think you should, eventually, concentrate your efforts on wrapping the SqlCommand execution all over your code (even in the DB Navigator) to synchronize with other threads. if you still feel stuck after reading the articles, i'll further explain. win application datagrid editting. moomoori22-Apr-06 23:38 moomoori 22-Apr-06 23:38  How can we edit a data grid in win application (VB/C#) like we do it easily in asp.net by property builder wizard ? operator overloading in C# pankajgarg1222-Apr-06 22:50 pankajgarg12 22-Apr-06 22:50  Can somebody please give me the example of operator overloading in C# Thank You Pankaj Garg -- modified at 3:59 Sunday 23rd April, 2006 Re: operator overloading in C# Guffa22-Apr-06 23:21 Guffa 22-Apr-06 23:21  http://msdn.microsoft.com/library/default.asp?url=/library/en-us/csref/html/vcwlkoperatoroverloadingtutorial.asp[^] --- b { font-weight: normal; } unmanaged code pankajgarg1222-Apr-06 22:48 pankajgarg12 22-Apr-06 22:48  What is the meaning of unmanaged code in VB.net and C# and what is meaning of line that we can write the unmanaged code in c# and not in vb.net Thank You Pankaj Garg -- modified at 3:59 Sunday 23rd April, 2006 Re: unmanaged code CWIZO23-Apr-06 0:45 CWIZO 23-Apr-06 0:45  Managed code is everything that runs under the CLR. Unmanaged is everything that does not. C# provdies this feature, VB.NET does not. It is as simple as that. -------------------------------------------------------- My development blog Q:What does the derived class in C# tell to it's parent? A:All your base are belong to us! Re: unmanaged code Zakaria Bin Abdur Rouf25-Apr-06 4:44 Zakaria Bin Abdur Rouf 25-Apr-06 4:44  If you want to use pointers in c# u have to write unsafe codes which result in unmanaged. --- Eat Bytes Everyday Zakaria Bin Abdur Rouf zakaria7@gmail.com Dynamically accessing web service DotNet novice22-Apr-06 21:33 DotNet novice 22-Apr-06 21:33  Hi, I am trying to implement a CSR(Coalition Service Registry). This is basically a registry where any service provider registers his/her service. Any service requesting user (initiator) contacts the CSR and the CSR forwards the request to the appropriate service provider and gets the result from it and forwards the result back to the initiator. I am implementing this in Visual Studio .NET C# language. Generally in .NET to consume a web service we need to add a web reference to the client application. This leads us to use a static URL. But my implementation cannot afford doing this. So how would I approach it? To be more specific I need to implement the same functionality what "Add a Web reference" would do in .NET framework. Another issue I have is the invoking of the web service by the CSR should be transparent to the intitiator. Can anyone suggest a possible solution to this?Suggestions with a little detail of any libraries or classes existing in .NET which I could make use of is highly appreciated. Thanks in advance, Shobha. Re: Dynamically accessing web service Guffa22-Apr-06 22:26 Guffa 22-Apr-06 22:26  You can change the URL of a web service dynamically. --- b { font-weight: normal; } Re: Dynamically accessing web service DotNet novice23-Apr-06 5:02 DotNet novice 23-Apr-06 5:02  Thanks for your reply. I'm beginner in these web services so my question may be very silly too sometime. Yeah I came across that option of changing the URL dynamically. But in that case if I'm right the service directory and service file should it be same? A sample code would help me a lot. And after this how will my CSR invoke the service and get the result and give it back to the requested client? I'm kinda confused in this part too.

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