RabinLin's Q&A profile

• Silverlight (formerly WPF/E) WPF/e real time video streaming

  Hey gang. I know WPF/e supports video (Windows Media) but one big advantage we use Flash Communication Server for is because its video/audio streaming is very low buffer and very real time. In our testing of Windows Media Server we were very unpleased with all the buffering. Of course we can understand why it is there for movie streaming but very unusable for real time streams in communication type applications. We could not get the Windows Media Player component to embed on a page and stream real time, it always buffered even if we set the player & server to 1 second buffer it was always 7-10 seconds even at low low bitrates. I would assume the answer to this question is no but does WPF/e change any of this We love WPF/e and WMV ...Show All

• Game Technologies: DirectX, XNA, XACT, etc. Xbox Live Arcade

  Do any of you reckon that it's possible to make a game using the XNA express framework, and then get it published (by MS or otherwise). I think, looking at the standard of games on Xbox Live Arcade, that I can make a much better game than anything there. I think $200 is a more realistic price for XNA GSP, but who knows. If such an indie-publisher organisation was set up and approved by Microsoft, I wouldn't mind contributing towards the costs. But then again let's not forget all the problems we will have with sharing the dev kit... I must admit I'm somewhat disappointed that XBLA games require so much approval. Of course Microsoft need to make sure that XBLA games are of a certain quality and suitable ...Show All

• Smart Device Development IO.Ports.SerialPort - issue with .BytesToRead and DataReceived Event

  Hi Folkes! I'm currently developing an infrared IR-communication software for PocketPC's with Windows Mobile 2003 SE and Windows Mobile 5.0 The communication is based on:    PocketPC virtual serial-port --> IR    and    IR --> Device serial-port. I wrote a communication-library for windows first, which worked perfectly with a real serial conncetion (no use or IR). The same code should work for the virtual serial-port and IR, since it's only a simple IR serial-bridge. Here comes the issue: It's possible to write data from the PocketPC to the device with .Write() It's possible to read data from the device with .Read() and similar. BUT: it's not possible to dertermine how may b ...Show All

• .NET Development ComeDom Reflection of Attribute instantiation

  Hey there! I'm currently trying to create some auto-generated code within a small utility using CodeDom. One of the requirements consists of copying attributes from members into the new generated code. Is there an easy way to access PropertyInfo of a type, access its Attribute data, and determining how it was instantiated That is, I'm looking to find out the arguments and parameters of how an attribute is invoked on a type. Thanks for any help that you can lend! Mike The answer: http://msdn2.microsoft.com/en-us/library/system.reflection.customattributedata.aspx ...Show All

• .NET Development Binary Deserialization and Generic Collections

  I'm just updating an application that was using DictionaryBase collections to use the Dictionary<K, V> generic collection and all works fine (including serialization) with the exception of the Deserialization. I make the collection class itself derive from Dictionary<K, V> rather than setting up a Dictionary<K, V> collection object in the application itself - thus it looks like this: [ Serializable ] public class Customers : Dictionary < string , Customer > { } The desrialization code looks like this: IFormatter Serialize = new BinaryFormatter (); FileStream LoadCust = new FileStream (pCustFile, FileMode .Open, FileAccess .Read); HireCarCustomers = Serialize.Deserialize(Lo ...Show All

• SQL Server Odd null behavior

  I am writing an upsert proc that should detect the change in state for a record. The change in state happens when a particular date field (default null) is populated. However, I can not get a record set that detects the changes properly. Here is an example set ANSI_NULLS on go create table #t1 ( ID int, DateField datetime ) create table #t2 ( ID int, DateField datetime ) insert into #t1 (ID, DateField) values (1, '7/20/2006') insert into #t2 (ID, DateFIeld) values (1, null) select * from #t1 join #t2 on #t1.ID = #t2.ID where #t1.DateField <> #t2.DateField drop table #t1 drop table #t2 The select should return a record because NULL does not equal '7/20/2006' but it doesn't. What am I missing Thanks in advance. ...Show All

• SQL Server need advise on DELETE action.

  Hi friends i've a table that has 3 columns that refer to same parent table(foreign keys).am trying to following as part of action. ALTER TABLE dbo.u_childTable ADD CONSTRAINT FK_childTable_MASTER_BATCHTO FOREIGN KEY ( FK_BATCHTO_MASTERID ) REFERENCES dbo.u_master ( MASTERID ) ON UPDATE NO ACTION ON DELETE NO ACTION GO ALTER TABLE dbo.u_childTable ADD CONSTRAINT FK_childTable_MASTER_FEESCALER FOREIGN KEY ( FK_FEESCALER_MASTERID ) REFERENCES dbo.u_master ( MASTERID ) ON UPDATE set null ON DELETE set null GO ALTER TABLE dbo.u_childTable ADD CONSTRAINT FK_childTable_MASTER_SUBDEBT FOREIGN KEY ( FK_SUBDEBT_MASTERID ) REFERENCES dbo.u_master ( MASTERID ) ON UPDATE set null ON DELETE set nu ...Show All

• Visual Studio Not able to compile the C# code in VS2005 with crystal report included in the project.

  Hello, I create a new project and add a new item to it which is a crystal report. Then when I compile , I get the following error without adding a single word of code: Error 1 Assembly 'CrystalDecisions.CrystalReports.Engine, Version=10.2.3600.0, Culture=neutral, PublicKeyToken=692fbea5521e1304' uses 'CrystalDecisions.Enterprise.InfoStore, Version=10.2.3600.0, Culture=neutral, PublicKeyToken=692fbea5521e1304' which has a higher version than referenced assembly 'CrystalDecisions.Enterprise.InfoStore, Version=9.2.3300.0, Culture=neutral, PublicKeyToken=692fbea5521e1304' c:\Program Files\Common Files\Business Objects\2.7\Managed\CrystalDecisions.CrystalReports.Engine.dll WindowsApplication2 Warning 2 Reference to type 'CrystalDecisio ...Show All

• SQL Server Connecting to Oracle on 64-bit (x64) machine

  Hi, Has anyone received the following error when trying to create a connection to an Oracle database using SSIS installed on a 64-bit (x64) machine "Test connection failed because of an error in initializing provider. ORA-06413: Connection not open" The reason this is funny to me is because I have the same Oracle/SSIS setup on a 32-bit (x86) machine and I can connect successfully. On both machines I have SSIS RTM, Oracle 9.2 and using the Microsoft Ole Db Provider for Oracle. Thanks, - Joel Hey Marcell, I was looking at this article and found that this can work in development. But in production if you would like to schedule it as a sql server job, how can you control it to use this path ...Show All

• Visual C++ wininet

  Hi I am trying to develop an internet app using wininet to download pages and then scan the data. The functions I am using are :- GetHttpConnection OpenRequest SendRequest It all works fine but I want to add a longer URL. For example at the moment my server is set to www.cnn.com . But I may want to go to a page like http://www.cnn.com/TECH/ or even something like http://money.cnn.com/ . So can anyone tell me how to do this. Thanks Jon Hi, if I understand the documentation you just pass the part after the server name as second parameter to OpenRequest. So pass e.g. "TECH/" as parameter. I think http:// is implicitly used, so I guess https:// is not possible. -- Sve ...Show All

• SQL Server index question???

  I do have a dump table "table1" Table1: UniqueId varchar(4) scandate datetime courseno varchar(5). This table is not related to any other tables in the database. This is used to track the student attendance for a particular course. There can 60000 distinct uniqueid's in the table and 300 disticnt courses. I query this table most of the time on uniqueid and coursecrn combination. This table can grow up to 5 million records. can anybody tell on what fields do I have to create indexes and also of what type(clustered or non-clustered). This table doesnt have a primary key. Thanks   ya scandate is datetime datatype. is this the final solution you suggest: 1. create pr ...Show All

• SharePoint Products and Technologies "How would you like to open this file?" dialog when opening a document

  On our sharepointsite.net site when we went to open a document from a document library a dialog opened asking You are about to open Name: xxxxxx From: xxxxxxx How would you like to open this file Read Only Edit i have just setup our own sharepoint server and when you open a document to goes straight to read only mode rather than asking how to open it how do i get our site to ask this before opening the document Regards, Stephen. I too have the same issue - but the suggestion regarding the View in Browser tick box doesn't apply either. Surely there must be someway of making all documents act in a consistent way when the link is clicked rather than having to make a change on each client PC ...Show All

• .NET Development How to access COM interface of a running C# program?

  Hello everyone, I am trying to access the COM interface of a running C# object. Is it possible to do so I can create a new instance of the object with objNameVettLateBound = Activator.CreateInstance(objTypeNameVett); and call the exposed methods of that object without a problem. I was wondering if it was possible to grab an already running instance of that object Thank in advance. Google for " Running Object Table ". ...Show All

• SQL Server SQL Exception: Login Failed for "SQLServername/username"

  Hello Everyone, I developed an application using c# that accesses MS SQL server 2000 for records. It works perfectly well on my development machine. However, when I tested it on another machine, I get the Error "Login Failed for SQLServername/username". When I started developing this app, I got this same error on my development machine and I solved the problem by making the 'aspnet' account an administrator in control panel - user accounts in Windows XP. This however doesn't work on the other machines i've tested on, and i get this same error. Here's my connection string: "data source=SERVER\\VSDOTNET;initial catalog=MedicalCenterDB;integrated security=SSPI;persist security info=False;workstation id=SERVER"; Pl ...Show All

• Game Technologies: DirectX, XNA, XACT, etc. Debugging shaders in XNA (possible?)

  From what I have been able to gather, you need visual studio .NET to debug shaders. Since XNA can only run in visual c# express, I presume it is impossible to debug shaders when using XNA. Is this correct Shaders are no longer debugged in Visual Studio, PIX does that duty these days. Its a part of the DirectX SDK and very useful for XNA development on the PC. Would love to get access to Xbox 360 Pix on XNA but I suspect would give a little to many details away bout the hardware... Anyway use Pix for PC, tis a wonderful thing. Deano ...Show All