Answer Questions

• Jan Drost socket class equivalent for dataarrival of winsock?

  hello, I am trying to write a asyncronous receive event which will continously listen to a server that sends feed at RANDOM time interval. with previous visual basic I could use winsock_datarrival which got initiated whenever the data was sent, but in .NET with socket class I cannot find such a thing. my beginreceive's callback exits when there is no data sent by the server. I want my function to keep listening in a new thread (that's why asy ...Show All

• sarsani cannot convert from System.Data.IDbTransaction to System.Data.Common.DbTransaction

  i get the above error msg from this: IDataReader = returnedRecords = null; Database db = CreateDatabase(); using(DbCommand dbCommand = db.GetStoredProcCommand("sp")) { db.AddInParameter(dbCommand, "@UserId", DbType.Int, userId); if (CurrentTransaction == null) { returnedRecords = CurrentDatabase.ExecuteReader(dbCommand); } else { returnedRecords = CurrentDatabase.ExecuteReader(dbCommand, CurrentTransaction); ...Show All

• CraigAP Generic List: ConvertAll

  let's say i have a generic list of guids i want to convert to strings. when i type the following [c#]: List<Guid> list1; // Fill list List<string> list2 = list1.ConvertAll<string>(delegate(Guid g){return g.ToString();}); ...it works fine. but when i declare my own generic list: public class ManagedList<T> : List<object> ...and try to do the same thing as above: ManagedList<Guid> list1; // Fill list ManagedList ...Show All

• iConcepts Impersonation Question - Trusted for Delegation

  I have a MarshalByRef component that is hosted through a Windows Service on an application server that in turn communicates to the database server on behalf of the impersonated user. In Beta 2 this seemed to work without any problem however now I can be stepping through the data access code where I'm establishing the SqlConnection instance; within this code my IIdentity.Name is correctly reported as DOMAIN\User. All seems to be well until ...Show All

• InquiringMinds A remote countdown clock?

  Hello All! I'm just learning about .Net remoting, and have build some simple apps.  Another one that I want to try it to be able to have a countdown clock on the client computer and server.  The client only see the countdown clock in action, the server will have control, Start and Stop. Any thoughts how this can be done, or where there may be some good tech notes on this.  Thanks!!!! Rudy Hi Rud ...Show All

• Saravana_Acc Is the release of the .Net framework 2.0 tied to the release of Visual Studio 2005

  I'm trying to determine if I should switch development to Visual Studio 2005 beta 2.  The product appears to be stable enough for me, however my concern is that the release date of the .Net framework 2.0 is tied to VS2005, and won't be for quite some time.  I'm developing a WinForms product aimed at the retail market, so the "go live" license isn't an option. but if the release the .Net framework is expected shortly, then it becomes fe ...Show All

• JAgiato Unable to connect Sql Server from VS.Net

  I am a new .Net user. I am trying to use Visual Studio.net 2003 to creat a Windows application. When I try to connect to my SQL server I am getting th efollowing message "Unable to connect to batabase. It is only possible to connect to SQL server Desktop engine database and MS Access databases with this version of Visual studio. Someone suggested that I may not have proper security set up. i am not sure where to start checking. Any help would be ...Show All

• Kathleen McGrath - MSFT signedXML and Namespaces

  I have to send out a SAML message to a server I do not control.  I was given a sample XML message that includes namespaces in the digitial signature portion. So think of everything as <ds:ElementName> instead of <ElementName>.  How can I modify my code so that the signedXMl document will create the signed portion correctly with namespaces in the elementnames.  While still maintaining the correct digestvalue.  I a ...Show All

• zhaorui how will i detect immediately if changes have been made to the database?

  hi all, i'm using c# and i want to know if there's a way to detect changes to the database without querying it all the time. In ADO.NET 2.0, we have introduced query notifications that may give you what you need, if your backend is SQL Server 2005. This whitepaper is a good referenced, although it was published when the feature was still in beta, so it is slightly outdated: http://msdn.microsoft.com/library/default.asp url=/library ...Show All

• Abraham Sultan NullValue throws exception for nullable columns

  I need help with the NullValue column property in a typed dataset. We have columns that allow nulls (the AllowDBNull property is set to true) and yet in code if we try to assign a null to the cell it throws InvalidCastException and StrongTypingException exceptions. So looking into the dataset I try to set the column's NullValue property to "Null" or "Empty" (instead of "Throw Exception") but it doesn't allow this ...Show All

• DFive Programatically embedding resources (a la self-extracting zip archive)

  Hi, first, I'm not sure if this is the most appropriate forum for my question, I did try to consider this but I'm just not sure, so I apologize upfront if it is not. I want to make a program with a feature similar to WinZip's ability to create a self-extracting archive, i.e. I want my program to generate an executable with embedded resources. The executable code in the assembly will always be the same, so I believe this is a matter of embe ...Show All

• Sverk Installing Net Framework 2.0

  I made a boo boo. Whilst the sandman was pulverizing me one night I accidently tried to install Net Framework 2.0 before installing the redist pack. Now when I try to install Net Framework 2.0 I get a message saying that there was an error creating process. The computer says that the reason for the error is because of C:\windows\system32\advpack.dll. If anyone can show me a way to correct my error without reformatting my hard drive I would be mo ...Show All

• ElvenWong Develop an Accounting Package

  hi Is it posible to develop an accounting package using .NET, when .NET using disconected architecture In an accounting application many activity need the data to presented to the user by look up table. I just need to make sure that I am not waste my time by trying to using .NET for build an accounting package while it is not posible or make it harder to develope. It's quite possible to build such a package using .NET. ...Show All

• Blue Stone Post how web service client will know about user defined data type?

  If a web method returns user defined object how web service client will know about user defined data type helo, thanks for u r reply. it really helped me and i learnt a new thing in .net. keep viewing my questions and kepp answering ,because i am a new developer. thanks, srinivas kompally if you create a class Test she should be public....The Web service consumer wil ...Show All

• MRys unknown exception - HELP!

  I've been sitting at the computer for the past 9 hours straight (of course with breaks in between) I CANNOT get this error resolved!!!!! It's developing on .NET CF but I thnk it maybe more appropriate posting it here. sometimes it produces this error, sometimes not. The way my app works is that it connects to a server on your PC. You can disconnect from the client application (works fine no problem... i'll check again) or you hit a "stop" button ...Show All