WalangAlam's Q&A profile

• .NET Development DataTable - Null Object Reference Error

  We have a Multithreaded application where frequent updates will be done to Datatables either by adding or deleting or updating rows. As a precaution we lock the datatable to avoid any errors, but even after applying the lock mechanism on the datatable and when we make use of the Find method of the Rows collection of the database , we are flooded with the Null Object reference error. Error structure as follow Object reference not set to an instance of an object. in System.Data -> at System.Data.DataTable.GetIndex(Int32[] indexDesc, DataViewRowState recordStates, IFilter rowFilter) at System.Data.DataTable.GetIndex(Int32[] indexDesc) at System.Data.DataTable.FindRow(DataKey key, Object[] values) at System.Data.DataTable. ...Show All

• Smart Device Development keep a program window floating on the top of a current windows

  Hi friend, I have 2 questions, please help. 1. Is it possible to keep a program window/message box floating on the top when editing text on the window beneath I want to do this because then the user can keep an eye on the info on the top window while editing the bottom one. 2. Can a button on a web page trigger an application on the pocket pc Regards 1. Create a form with FormBorderStyle = None and TopMost = true and resize it to a suitable size. If you want a border you have to paint it yourself in the form's Paint event. Call Show() (not ShowDialog()) to show the form. 2. I don't think this is possible. Lars ...Show All

• SQL Server model databases

  Hi, When i create a new table in Model database how can i automatically create table in other user databeses. Thanks for your answers The model database is the mold for future databases that are created. There is no mechanism in place to have other databases "inherit" the structures that are put into model after the database is created. You would want to either A. Run the create script yourself in existing databases or B. Write a tool to cursor through all databases (possibly using sp_MSforeachdb, which is undocumented, but you can find an abundence of info on the web) and create the objects like that. I would build something in a UI tool that logs your actions personally, as you should ...Show All

• SQL Server Is this correct forum for SQL Server Compact Edition ( formerly Everywhere )

  Hi, I am looking for help ( at beginnners level ) in the use of the newly released / promoted SQL Server Compact Edition (what used to SSEv ). I have a single user desktop application - not PDA / mobile, which uses JET database today & I need to convert it to current databse as JET is no longer supported under Vista. I understand that it is SQL Server Compact edition. My application is native c++ with no .NET and I would like to keep it that way. Can someone point me to examples, documentation, or any help which will get me going Currently, I am connecting to the JET database using ADO and a connection string ( again ADO, not ADO.NET ). Is it just a matter of changing the connection string and making sure that the righ dlls are inclu ...Show All

• Game Technologies: DirectX, XNA, XACT, etc. Submitting Bugs/Feedback on XNA Game Studio Express (Beta)

  One reason we release beta software is to put it in the hands of the community and start getting feedback on what we'll be releasing. How you give feedback depends on the type of feedback you have.   We hope many of you have already joined the XNA Beta Program through the Microsoft Connect Web site http://connect.microsoft.com . If you haven't signed up at the Microsoft Connect Site, it couldn't be easier. Sign in using your Windows Live ID or Passport account (if you haven't already). Click Available Connections. Scroll down. In the table that lists the various programs available, select XNA Game Studio Express Beta 1, and then click Apply. After filling out the short survey, you will be enrolled automatically. Micro ...Show All

• Game Technologies: DirectX, XNA, XACT, etc. Physic Based Games?

  Would I be able to create Physics Based Games on XNA For example a game where you can move around objects and also, could I make my own map on Marble Blast Ultra Yes, you can code up a physics simulator, and collision detection engine, in C#, and use it in XNA. Unfortunately, most of the available open source (or at least free) physics engines are written in C/C++, which means they won't work with XNA on Xbox (although you can use them with XNA on PC using a wrapper). Thus, you'll probably have to write a bunch of code yourself, rather than using something pre-made, such as ODE (http://www.ode.org). ...Show All

• Game Technologies: DirectX, XNA, XACT, etc. How to load a WaveFront model?

  Hi. Using DirectX, how can I load a WaveFront model Or I can work just with the X model (I don't think so..) Tks. Thanks man. Wotsit seems to be a very good site. But just one more question (for this moment :D): do you think that I should load another kind of model, instead of WaveFront I'm using this model because it seems to be very commom to developers. Is it true Tks ;) ...Show All

• SQL Server Monitoring SQL Server activies from an outside environment

  Hi, I don't know if this is the right place to post this kind of question (moderators, please move it to the right place if it's not here). I want to know how can I monitor some operations that are executed on a SQL Server database. Operations like: INSERT, DELETE, UPDATE, transactions, and so on (I know that I can do this using triggers, but doing this way I'll have to fill a table with the information from the triggers and stay loading the table data all the time. I want a way to monitor using other resources, in realtime). My idea is to build a program to monitor these activities (C# to be more exactly). How can I do this Thanks SMO is a set of object libraries that allow you to manage SQL Server. What I think you're l ...Show All

• Visual Studio Express Editions Need Advice: How to organize class libraries?

  I have created my first Class Library; it is now a dll and is accessible in several windows projects. I noticed that when I compiled it, it required a Namespace. I do not have enough knowledge to appreciate namespaces, but assume that they would be helpful in organizing this and other dll’s. I am looking for solid design practices to follow when creating and organizing class libraries. I envision two groups of class libraries. One group of dll’s will be specific to the application that is being written; the other class of dll’s will be more general and will, I hope, find utility in other applications. Should all the dll’s of a group have the same namespace Should each dll be created in its own Class Library Project In m ...Show All

• Visual Studio Crystal Reports XI and Visual Studios 2005 Questions?

  OK I have read a lot of post here that lead me to believe CRXI is not compatible with Visual Studio 2005. Or should I say not till CRXI r2 comes out in which case it will support VS2005 .net Framework 2.0. On a Project that is updated to VS2005 from VS2003 and CRXI for the most part went very smooth.   Except and for me this is major CR Version is 10.2.3600.0 in VS2005 where as it was VS2003 it is Version 11.0.3300.0 for me. Ok from all the post I understand this has dumbed down my reports since CRXI is not ready for VS2005 till r2. In the mean time should we just use the dumb down version of our reports I have seen a lot of post that indicate people can not do this do to controls, processes, or design of there certain proj ...Show All

• Visual Studio Team System Specifying custom properties for ordered tests

  Hi, Is there any way to specify custom properties for the ordered tests For UnitTests we can do it through [ TestProperty("Name", "Value")]. How to do the same for ordered tests -Aaryan Hi Aaryan, We currently do not support adding custom properties for ordered tests. We appreciate your feedback and will look into this for future versions of the product. Thanks, David Gorena Elizondo [MSFT] VSTS ...Show All

• SQL Server SSIS Datetime Variable perfoming >= instead of >

  The source table has timestamp column (Modified Date), which gets upated with each modification via an update trigger. I store the MAX(modifieddate) in a DeltaExtractionHistory Table in the staging database for each extraction or package execution. Then in the next run, I need to pick the coulmns that have a greater datetime, than the last extracted MAX(ModifiedDate) in the DeltaExtractionHistory table for delta processing. The OLEDB source has the following SQL statement: SELECT * FROM [dbo].[MyTable] WHERE [ModifiedDate] > with the following parameter: Parameter 0 : dtLastModifiedDate dtLastModifiedDate is an SSIS variable of type Datetime. I read the value of MAX(ModifiedDate) in this varia ...Show All

• Windows Search Technologies "Unable to display preview." on network share results

  I'm using Desktop Search 3.0 RTW along with the UNC/FAT add-in, and I'm getting an "Unable to display preview" message on every result that's not on my local machine (e.g., my R: or Z: drive over the network). Is there a problem or am I doing something wrong Thanks, Tim Ed, Thanks for your response. It is better to get a response with a target date rather than silence. I'll be patient. BTW, I've now tried the latest Copernic, X1, and WDS, and I keep coming back to WDS. You guys have a winner here, from many aspects including search performance and UI. Keep it up! Tim ...Show All

• SQL Server Determine the database name

  Hi How do I determine the name of the database I am currently in Thanks Avi select d.[name] from master..sysprocesses p join master..sysdatabases d on d.dbid = p.dbid where p.spid = @@spid Thanks ...Show All

• Smart Device Development control.invoke

  Hi all. Can someone push or punch me in the right direction here Using the CF 2.0 I have an application that is doing an async poll of a TCP listener for data. When the data arrives, I want to update certain forms with the values. In a nutshell, The data arrives. I determine what type of data it is and where it should display. I populate properties of a class with the data. I then raise an event to signal the data is here and the properties have been populated. It is here where my problems start. Based on the the data I will determine what form I need to interact with. I need to call a sub from within that form to populate the controls on it. I was using invoke to call the sub , but the data would not display because the ...Show All