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  • SQLite table does not exist exception for existing SQLite database (and table)

    - by SK9
    I've followed the instructions given here for introducing an existing SQLite database to your Android app. When I query the table "android_metadata" this is fine. But when I run a similar query on my own table "words" (which has _id for primary integer key) I get a table does not exist exception and the app crashes. Why is that? Code: Cursor c = myDatabase.query("android_metadata", null, null, null, null, null, null, null); works but Cursor c = myDatabase.query("words", null, null, null, null, null, null, null); returns a table does not exist exception. This is how I'm creating the database (the references to paths and filenames are correct): private void copyDatabase() throws IOException{ //Open local db as the input stream InputStream myInput = mContext.getAssets().open(DB_NAME); //Path to the just created empty db String outFileName = DB_PATH + DB_NAME; //Open the empty db as the output stream OutputStream myOutput = new FileOutputStream(outFileName); //Transfer bytes from the inputfile to the outputfile byte[] buffer = new byte[1024]; int length; while ((length = myInput.read(buffer))>0){ myOutput.write(buffer, 0, length); } //Close the streams myOutput.flush(); myOutput.close(); myInput.close(); } (Note: To my eyes, the table is there. I'm looking right at it in my SQLite browser.)

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  • ASP.NET MVC 2 with NServiceBus unable to load requested types

    - by dp
    I am trying to use NServiceBus with an ASP.NET MVC 2 website (using VS 2010 and the .NET 4.0 framework). However, when I run the site on my local machine, I get the following error: Unable to load one or more of the requested types. Retrieve the LoaderExceptions property for more information. Here are the relevant steps I have taken: Downloaded the NServiceBus.2.0.0.1145 binaries In my asp.net mvc app, I've added references to NServiceBus.dll and NServiceBus.Core.dll In Global.asax.cs I've added: public static IBus Bus { get; private set; } protected void Application_Start() { AreaRegistration.RegisterAllAreas(); RegisterRoutes(RouteTable.Routes); Bus = NServiceBus.Configure .WithWeb() .Log4Net() .DefaultBuilder() .XmlSerializer() .MsmqTransport() .IsTransactional(false) .PurgeOnStartup(false) .UnicastBus() .ImpersonateSender(false) .CreateBus() .Start(); } In web.config, I've added: <MsmqTransportConfig InputQueue="MyWebClient" ErrorQueue="error" NumberOfWorkerThreads="1" MaxRetries="5"/> <UnicastBusConfig> <MessageEndpointMappings> <add Messages="Messages" Endpoint="MyServerInputQueue"/> </MessageEndpointMappings> </UnicastBusConfig> The error indicates that the problem is with the first line in the Global.asax.cs file. Is it possible that there is a problem with NServiceBus running under .NET 4.0?

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  • Generating %pc relative address of constant data

    - by Hudson
    Is there a way to have gcc generate %pc relative addresses of constants? Even when the string appears in the text segment, arm-elf-gcc will generate a constant pointer to the data, load the address of the pointer via a %pc relative address and then dereference it. For a variety of reasons, I need to skip the middle step. As an example, this simple function: const char * filename(void) { static const char _filename[] __attribute__((section(".text"))) = "logfile"; return _filename; } generates (when compiled with arm-elf-gcc-4.3.2 -nostdlib -c -O3 -W -Wall logfile.c): 00000000 <filename>: 0: e59f0000 ldr r0, [pc, #0] ; 8 <filename+0x8> 4: e12fff1e bx lr 8: 0000000c .word 0x0000000c 0000000c <_filename.1175>: c: 66676f6c .word 0x66676f6c 10: 00656c69 .word 0x00656c69 I would have expected it to generate something more like: filename: add r0, pc, #0 bx lr _filename.1175: .ascii "logfile\000" The code in question needs to be partially position independent since it will be relocated in memory at load time, but also integrate with code that was not compiled -fPIC, so there is no global offset table. My current work around is to call a non-inline function (which will be done via a %pc relative address) to find the offset from the compiled location in a technique similar to how -fPIC code works: static intptr_t __attribute__((noinline)) find_offset( void ) { uintptr_t pc; asm __volatile__ ( "mov %0, %%pc" : "=&r"(pc) ); return pc - 8 - (uintptr_t) find_offset; } But this technique requires that all data references be fixed up manually, so the filename() function in the above example would become: const char * filename(void) { static const char _filename[] __attribute__((section(".text"))) = "logfile"; return _filename + find_offset(); }

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  • Is it possible to mix MEF and Unity within a MEF-based plugin?

    - by Dave
    I'm finally diving into Unity head first, and have run into my first real problem. I've been gradually changing some things in my app from being MEF-resolved to Unity-resolved. Everything went fine on the application side, but then I realized that my plugins were not being loaded. I started to look into this issue, and I believe it's a case where MEF and Unity don't mix. Plugins are loaded by MEF, but each plugin needs to get access to the shared libraries in my application, like app preferences, logging, etc. Initially, my plugin constructor had the ImportingConstructor attribute. I then replaced it with InjectionConstructor so that Unity could resolve its shared library dependencies. But because I did that, MEF no longer loaded it! Then I used both attributes, which compiled, but then I got a composition error (MEF). I figured that this was because the constructor takes a parameter that was once resolved by a MEF Import, so I removed all parameters. As expected, now MEF was able to load my plugin, but because the constructor needs to call into the interface that was once passed in, construction fails. So now I'm at a point where I can get MEF to start to load my plugin, but can't do anything with it because the plugin relies on shared libraries that are registered with Unity. For those of you that have successfully mixed MEF and Unity, how do you go about resolving the references to the shared libraries with Unity?

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  • VB.NET error: Microsoft.ACE.OLEDB.12.0 provider is not registered [RESOLVED]

    - by Azim
    I have a Visual Studio 2008 solution with two projects (a Word-Template project and a VB.Net console application for testing). Both projects reference a database project which opens a connection to an MS-Access 2007 database file and have references to System.Data.OleDb. In the database project I have a function which retrieves a data table as follows private class AdminDatabase ' stores the connection string which is set in the New() method dim strAdminConnection as string public sub New() ... adminName = dlgopen.FileName conAdminDB = New OleDbConnection conAdminDB.ConnectionString = "Data Source='" + adminName + "';" + _ "Provider=Microsoft.ACE.OLEDB.12.0" ' store the connection string in strAdminConnection strAdminConnection = conAdminDB.ConnectionString.ToString() My.Settings.SetUserOverride("AdminConnectionString", strAdminConnection) ... End Sub ' retrieves data from the database Public Function getDataTable(ByVal sqlStatement As String) As DataTable Dim ds As New DataSet Dim dt As New DataTable Dim da As New OleDbDataAdapter Dim localCon As New OleDbConnection localCon.ConnectionString = strAdminConnection Using localCon Dim command As OleDbCommand = localCon.CreateCommand() command.CommandText = sqlStatement localCon.Open() da.SelectCommand = command da.Fill(dt) getDataTable = dt End Using End Function End Class When I call this function from my Word 2007 Template project everything works fine; no errors. But when I run it from the console application it throws the following exception ex = {"The 'Microsoft.ACE.OLEDB.12.0' provider is not registered on the local machine."} Both projects have the same reference and the console application did work when I first wrote it (a while ago) but now it has stopped work. I must be missing something but I don't know what. Any ideas? Thanks Azim

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  • JPA : many-to-many - only one foreign key in the association table

    - by Julien
    Hi, I mapped two classes in a ManyToMany association with these annotations : @Entity @Inheritance(strategy=InheritanceType.TABLE_PER_CLASS) public abstract class TechnicalItem extends GenericBusinessObject implements Resumable{ @SequenceGenerator(name="TECHNICAL_ITEM_ID_GEN", sequenceName="TECHNICAL_ITEM_ID_SEQ") @Id @Column(name = "\"ID\"", nullable = false) @GeneratedValue(strategy = GenerationType.SEQUENCE, generator = "TECHNICAL_ITEM_ID_GEN") private int id; @ManyToMany(mappedBy = "referencePerformanceItems", fetch=FetchType.LAZY) private List testingRates; } @Entity @DiscriminatorValue("T") public class TestingRate extends Rate { @ManyToMany(fetch=FetchType.LAZY) @JoinTable(name="ecc.\"TESTING_RATE_TECHNICAL_ITEM\"", joinColumns = {@JoinColumn(name = "\"TESTING_RATE_ID\"")}, inverseJoinColumns = {@JoinColumn(name = "\"TECHNICAL_ITEM_ID\"")}) //@ManyToMany(mappedBy = "testingRates", fetch=FetchType.LAZY) private List referencePerformanceItems; } The sql generated for the association table creation is : create table ecc."TESTING_RATE_TECHNICAL_ITEM" ( "TESTING_RATE_ID" int4 not null, "TECHNICAL_ITEM_ID" int4 not null ); alter table ecc."TESTING_RATE_TECHNICAL_ITEM" add constraint FKC5D64DF6A2FE2698 foreign key ("TESTING_RATE_ID") references ecc."RATE"; There is no mention of the second foreign key "TECHNICAL_ITEM_ID" (the second part of the composite foreign key which should be in the association table). Is it a normal behaviour ? What should I do in the mapping if I want my 2 columns are 2 foreign keys referencing the primary keys of my 2 concerned tables. I use a PostGreSQL database and Hibernate as JPA provider. Thanks, Julien

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  • Nant build fails - but only in TeamCity

    - by wayne
    Hi I have a nant build file set up which works fine from the cmd line but not in TeamCity. I've checked that the comand I execute is run from the same directory TC is working in and checked all the references but it still fails with the following error: [build] Compile the project using Debug configuration... [10:30:05]: [build] msbuild (1m:18s) [10:30:06]: [msbuild] Starting MSBuild... [10:30:07]: [msbuild] Starting 'C:\WINDOWS\Microsoft.NET\Framework\v3.5\msbuild.exe (@"G:\TeamCity\buildAgent\work\9de21b975852dd95\src\Irm.Web.App\Irm.Web.App.sln.teamcity.msbuild.tcargs")' in 'G:\TeamCity\buildAgent\work\9de21b975852dd95' [10:30:09]: [msbuild] MSBUILD : error MSB1025: An internal failure occurred while running MSBuild. [10:31:18]: [msbuild] Unhandled Exception: System.NullReferenceException: Object reference not set to an instance of an object. [10:31:18]: [msbuild] at Microsoft.Build.CommandLine.MSBuildApp.BuildProject(String projectFile, String[] targets, String toolsVersion, BuildPropertyGroup propertyBag, ILogger[] loggers, LoggerVerbosity verbosity, DistributedLoggerRecord[] distributedLoggerRecords, Boolean needToValidateProject, String schemaFile, Int32 cpuCount, Boolean enableNodeReuse) [10:31:18]: [msbuild] at Microsoft.Build.CommandLine.MSBuildApp.Execute(String commandLine) [10:31:18]: [msbuild] at Microsoft.Build.CommandLine.MSBuildApp.Main() [10:31:24]: G:\TeamCity\buildAgent\work\9de21b975852dd95\Irm-deploy.build(22,10): External Program Failed: msbuild (return code was -1073741819) Does anyone have any idea why TC would not be able to run the build yet I know it works? Cheers w://

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  • Hibernate "JOIN ... ON"?

    - by CaptainAwesomePants
    I have an application that uses Hibernate for its domain objects. One part of the app is common between a few apps, and it has no knowledge of the other systems. In order to handle relations, our class looks like this: @Entity public class SystemEvent { @Id @GeneratedValue public int entity_id; @Column(name="event_type") public String eventType; @Column(name="related_id") public int relatedObjectId; } relatedObjectId holds a foreign key to one of several different objects, depending on the type of event. When a system wants to know about events that are relevant to its interests, it grabs all the system events with eventType "NewAccounts" or some such thing, and it knows that all of those relatedObjectIds are IDs to a "User" object or similar. Unfortunately, this has caused a problem down the line. I can't figure out a way to tell Hibernate about this mapping, which means that HQL queries can't do joins. I'd really like to create an HQL query that looks like this: SELECT users FROM SystemEvent event join Users newUsers where event.eventType = 'SignUp' However, Hibernate has no knowledge of the relationship between SystemEvent and Users, and as far as I can tell, there's no way to tell it. So here's my question: Is there any way to tell Hibernate about a relationship when your domain objects reference each other via ID numbers and not class references?

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  • To GAC, or not to GAC?

    - by Jagd
    I have a data access layer (DAL) that is written in ASP.NET 3.5 and uses the Microsoft patterns & practices libraries (hereafter referred to as P&P) in order to accomplish its data access. I installed P&P and it resides in my GAC, so, logically, my DAL references it in the GAC. Therefore, the P&P libraries are never pulled down to the bin folder of my DAL. I use this DAL project in at least five (more than that even, but I'm too lazy to try to count them all) different websites. And this has all worked just fine for me because I'm the only developer who works on these websites. But, now I have other developers who are going to work on some of these websites. The problem: if a developer pulls the DAL project down from our code repository, it won't build for them if they don't have the P&P libraries installed. My question: should I expect the developers to install the P&P libraries, or should I just dump them in the bin folder and be done with it? I realize that dumping them into the bin folder is probably the easiest way to deal with the problem, but I've never been a big fan of the bin folder if I can reference them in the GAC instead.

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  • Multilingual spellcheck on WPF richtextbox

    - by sub-jp
    I need to turn spellcheck on for a richtextbox, and set the language to one the user has picked from a drop down. For now, I'm just testing it by building the richtextbox in xaml and providing a language to the xaml language attribute. I've read two different resources and one says I need to set the language attribute, and the other says I need to set the xml:lang attribute. Neither seems to work. I've tried setting either one to "es" for Spanish, and I've also tried setting both to "es". I've also tried french by setting them to "fr-FR", without success. The only thing that happens is that english words aren't marked, but the other language words are marked as misspelled. I also read that I need to change the keyboard language. This would be a problem for my application as the language within the application needs to be switched on the fly, so having the end user go to their keyboard settings just so spellcheck will work is a problem. However, I've changed my keyboard settings, and spell check still does not work properly. This time it doesn't mark anything as misspelled, even misspelled english words. What am I missing? Edit: some links to my references above http://msdn.microsoft.com/en-us/library/system.windows.controls.spellcheck(v=VS.100).aspx http://www.dev102.com/2008/03/25/customize-spellcheck-on-wpf-text-controls/ http://books.google.com/books?id=clLc5BBHqRMC&pg=PA121&lpg=PA121&dq=C%23+wpf+enable+spellcheck&source=bl&ots=_r59pZRDjP&sig=yHMBc39EHKK5gaRMzxlBaEsY890&hl=en&ei=oXnIS8zWH4G88gaq48yGBw&sa=X&oi=book_result&ct=result&resnum=6&ved=0CBMQ6AEwBQ#v=onepage&q&f=false

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  • Database structure - is mySQL the right choice?

    - by Industrial
    Hi everyone, We are currently planning the database structure of a quite complex e-commerce web app that has flexibility as it's main cornerstone. Our app features a large amount of data (products) and we have run into a slight headache trying to keep performance high without compromizing normalization rules in the database, or leaving our highly beloved flexibility concept behind when integrating product options (also widely known as product attributes or parameters). Based on various references and sources available, we have made up lists on pros and cons of all major and well known database patterns to solve this. After comparing these, we have come up with two final alternatives: EAV (Entity-attribute-value model) : Pros: Database is used for all sorting. Cons: All related queries will include a number of joins between multiple tables in order to complete the collection of data. SLOB (Serialized LOB, also known as Facade?) : Pros: Very flexible. Keeping the number of necessary joins low compared to a EAV design pattern. Easy to update/add/remove data from each product. Cons: All sorting will be done by the application instead of the database. Will use lots of performance (memory?) when big datasets is processed by a large number of users. Our main questions: Which pattern/structure would you use, or maybe even a different solution? Is there better databases besides mySQL available nowadays to accomplish what we want? Thanks a lot! Reference: http://stackoverflow.com/questions/695752/product-table-many-kinds-of-product-each-product-has-many-parameters

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  • Mapping parent-child relationships with iBatis

    - by agnul
    I have the classic setup public class Parent { Integer id; ... // No generics Collection someCollectionAttribute; ... public void setChildren(Collection c) { ... } } public class Child { Integer id; ... } and I'm trying to map this on the usual table setup using iBatis (version 2.30... don't ask). create table parents ( ID integer primary key ... ) create table children ( ID integer primary key PARENT_ID integer references parents(id) ... ) My mapping file looks like this <resultMap id="ParentResult" groupBy="id"> <result property="id" column="ID" /> ... <result property="children" resultMap="ChildResult" /> </resultMap> <resultMap id="ChildResult"> <result property="id" column="ID" /> <result property="parentId" column="PARENT_ID" /> ... </result> <sql id="loadParent" resultMap="ParentResult"> select P.ID as p1, ..., C.ID as c1, C.PARENT_ID as c2 ... from parents P join children C on (P.ID = C.PARENT_ID) where P.ID = #id# order by P.ID </sql> Doing the usual sqlMap.queryForObject("loadParent", new Integer(42)) at first caused a NullPointerException inside the setChildren setter which apparently is called with a null argument (my bad). Fixing the setter everything works fine, but the logs show that setChildren is called only once before even running a single SQL statement, still with a null argument, so I'm wondering what's going on here. Anyone has any clues?

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  • Playing online video on iphone web, the iphone seems to cache the reference movie

    - by Mad Oxyn
    We are working on an online mobile video app, and are trying to play a reference movie on an iphone from the iphone browser. The problem is, the movie plays the first time, but when we try to play a different movie the second time, it doesnt. Quicktime gives a general error message sayin "Cannot Play Movie". More precisely this is what we are trying to do: Connect with an iPhone to a webserver that serves a reference movie (generated with quicktime pro). The ref movie automatically gets downloaded to the iphone by quicktime. Quicktime then chooses one of the 3 references in the reference movie, based on the connection speed, and tries to download the designated movie via a relative path. A servlet gets called and forwards the relative path to the right movie. This all works the first time. However the second time when we want download different movies, we get the quicktime error. Test case: Open reference movie 1 Movie plays in Quicktime Open reference movie 2 ERROR: Quicktime gives an error - Cannot Play Movie Shut down Iphone Turn Iphone on again Open reference movie 2 Iphone plays movie Open movie ERROR: Quicktime gives an error - Cannot Play Movie Did anyone encounter similar issues with quicktime and the use of reference movies and is there something we can do to work around that?

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  • retrieve data from multiple tables referencing some tables in mysql

    - by I Like PHP
    i have 10 tables have innoDB engine 1. one is state_table which attributes are state_id and state_name 2. another table city_table which attributes are city_id and city_name 3. one more table permit_table which attribute is p_id above city_id,state_id and permit_id is references to rest of 7 tables. each table having state_id, city_id and permit_id referencing above tables now i want to extract all tables data with their respective city name and state name ( each tables may have different city id and state id) i m using below mysql query( i know it's very length way.... ) . please tell me how to do it with optimized method? SELECT p.*,cp.city_name,sp.state_name, o.*,co.city_name,so.state_name, t.*,ct.city_name,st.state_name, th.*,cth.city_name,sth.state_name, f.*,cf.city_name,sf.state_name .......so on................ .......so on................ ............................ FROM permit_table p JOIN table_city cp ON cp.city_id=p.city_id JOIN table_state sp ON sp.state_id=p.state_id JOIN table_one o ON o.permit_id=p.permit_id JOIN table_city co ON co.city_id=o.city_id JOIN table_state so ON so.state_id=o.state_id JOIN table_two t ON t.permit_id=p.permit_id JOIN table_city ct ON ct.city_id=t.city_id JOIN table_state st ON st.state_id=t.state_id JOIN table_three th ON th.permit_id=p.permit_id JOIN table_city cth ON cth.city_id=th.city_id JOIN table_state sth ON sth.state_id=th.state_id JOIN table_four f ON f.permit_id=p.permit_id JOIN table_city cf ON cf.city_id=f.city_id JOIN table_state sf ON sf.state_id=f.state_id ................so on......................... ................so on......................... .............................................. WHERE p.permit_id=base64_encode(mysql_real_escape_string($_GET[pid])); Thanks For help me always.

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  • Executing a modified expression

    - by Sam
    I found this brief demo: http://msdn.microsoft.com/en-us/library/bb546136.aspx Which discusses modifying an expression. However the code starts with a Expression<Func<string, bool>> and ends up with a Expression so it's not complete. How do I take that expression and make it typed as Expression<Func<string,bool>> again? All the examples I have have found on executing an expression all involve dynamically created expressions which is not what this case has. Here the original expression is defined at compile time. And the code I want to write to do this won't know much about the expression, ideally as little as possible. I definately can't see how I would know what "Paramaters" to pass to Expression.LambdaExpression... In my particular case I want to search for any references to a particular propery of type A and swap them out with a reference to a property of type B then pass the expression to a call to IEnumerable.Where. ie. p=>p.Name == "Sam" where P is Foo1 becomes p=>p.FirstName == "Sam" where p is Foo2

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  • Applying business logic to form elements in ASP.NET MVC

    - by Brettski
    I am looking for best practices in applying business logic to form elements in an ASP.NET MVC application. I assume the concepts would apply to most MVC patterns. The goal is to have all the business logic stem from the same place. I have a basic form with four elements: Textbox: for entering data Checkbox: for staff approval Checkbox: for client approval Button: for submitting form The textbox and two check boxes are fields in a database accessed using LINQ to SQL. What I want to do is put logic around the check boxes on who can check them and when. True table (little silly but it's an example): when checked || may check Staff || may check Client Staff | Client || Staff | Client || Staff | Client 0 0 || 1 0 0 1 0 1 || 0 0 0 1 1 0 || 1 0 0 1 1 1 || 0 0 0 1 There are to security roles, staff and client; a person's role determines who they are, the roles are maintained in the database alone with current state of the check boxes. So I can simply store the users roll in the view class and enable and disable check boxes based on their role, but this doesn't seem proper. That is putting logic in UI to control of which actions can be taken. How do I get most of this control down into the model? I mean I need to control which check boxes are enabled and then check the results in the model when the form is posted, so it seems the best place for it to originate. I am looking for a good approach to constructing this, something to follow as I build the application. If you know of some great references which explain these best practices that is really appreciated too.

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  • Need help with buffer overrun.

    - by Morinar
    I've got a buffer overrun I absolutely can't see to figure out (in C). First of all, it only happens maybe 10% of the time or so. The data that it is pulling from the DB each time doesn't seem to be all that much different between executions... at least not different enough for me to find any discernible pattern as to when it happens. The exact message from Visual Studio is this: A buffer overrun has occurred in hub.exe which has corrupted the program's internal state. Press Break to debug the program or Continue to terminate the program. For more details please see Help topic 'How to debug Buffer Overrun Issues'. If I debug, I find that it is broken in __report_gsfailure() which I'm pretty sure is from the /GS flag on the compiler and also signifies that this is an overrun on the stack rather than the heap. I can also see the function it threw this on as it was leaving, but I can't see anything in there that would cause this behavior, the function has also existed for a long time (10+ years, albeit with some minor modifications) and as far as I know, this has never happened. I'd post the code of the function, but it's decently long and references a lot of proprietary functions/variables/etc. I'm basically just looking for either some idea of what I should be looking for that I haven't or perhaps some tools that may help. Unfortunately, nearly every tool I've found only helps with debugging overruns on the heap, and unless I'm mistaken, this is on the stack. Thanks in advance.

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  • Reading a WAV file into VST.Net to process with a plugin

    - by Paul
    Hello, I'm trying to use the VST.Net and NAudio frameworks to build an application that processes audio using a VST plugin. Ideally, the application should load a wav or mp3 file, process it with the VST, and then write a new file. I have done some poking around with the VST.Net library and was able to compile and run the samples (specifically the VST Host one). What I have not figured out is how to load an audio file into the program and have it write a new file back out. I'd like to be able to configure the properties for the VST plugin via C#, and be able to process the audio with 2 or more consecutive VSTs. Using NAudio, I was able to create this simple script to copy an audio file. Now I just need to get the output from the WaveFileReader into the VST.Net framework somehow. private void processAudio() { reader = new WaveFileReader("c:/bass.wav"); writer = new WaveFileWriter("c:/bass-copy.wav", reader.WaveFormat); int read; while ((read = reader.Read(buffer, 0, buffer.Length)) > 0) { writer.WriteData(buffer, 0, read); } textBox1.Text = "done"; reader.Close(); reader.Dispose(); writer.Close(); writer.Dispose(); } Please help!! Thanks References: http://vstnet.codeplex.com (VST.Net) http://naudio.codeplex.com (NAudio)

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  • Binding Data to DataGridView in VB.Net

    - by Peter
    Hi, I have a bit of code which loads data from a stored procedure in MS SQL Server and then loads the data to a datagridview, which works fine. What i want is for the code that connects / loads the data to sit in my Database Class and then everything associated with the datagridview to be stored in my Form but i am having problems passing the contents of the bindingsource over to the Form from the Database Class. Form1 Public Class Form1 Dim myDatabaseObj As New Class1() Dim bindingSource1 As New BindingSource() Dim connectString As New SqlConnection Dim objDataAdapter As New SqlDataAdapter Dim table As New DataTable() Dim tabletest As New DataTable() Private Sub loadCompanyList() Try Me.dgv_CompanyList.DataSource = Me.bindingSource1 getCompanyList() Catch ex As NullReferenceException End Try End Sub Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load loadCompanyList() End Sub End Class Database Class When i try place the getCompanyList() in a class and then create a new object that references the Form() it does not seem to return any value from the table to the MyForm.BindingSource1.Datasource meaning my datagridview displays not data. ..... Private Sub getCompanyList() Try Dim myForm as new Form() connect_Transaction_Database() objDataAdapter.SelectCommand = New SqlCommand() objDataAdapter.SelectCommand.Connection = connectString objDataAdapter.SelectCommand.CommandText = "sp_GetCompanyList" objDataAdapter.SelectCommand.CommandType = CommandType.StoredProcedure Dim commandBuilder As New SqlCommandBuilder(Me.objDataAdapter) Dim table As New DataTable() table.Locale = System.Globalization.CultureInfo.InvariantCulture Me.objDataAdapter.Fill(table) **MyForm.bindingSource1.DataSource = table** Catch ex As DataException MsgBox(ex.Message) Catch ex As NullReferenceException MsgBox(ex.Message) End Try disconnect_Transaction_Database() End Sub If anyone could help. Thank you. Peter

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  • Can I avoid explicit 'self'?

    - by bguiz
    I am fairly new to Python and trying to pick it up, so please forgive if this question has a very obvious answer! I have been learning Python by following some pygame tutorials. Therein I found extensive use of the keyword self, and coming from a primarily Java background, I find that I keep forgetting to type self. For example, instead of self.rect.centerx I would type rect.centerx, because, to me, rect is already a member variable of the class. The Java parallel I can think of for this situation is having to prefix all references to member variables with this. Am I stuck prefixing all member variables with self, or is there a way to declare them that would allow me to avoid having to do so? Even if what I am suggesting isn't "pythonic", I'd still like to know if it is possible. I have taken a look at these related SO questions, but they don't quite answer what I am after: Python - why use “self” in a class? Why do you need explicitly have the “self” argument into a Python method?

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  • Detecting which MCUs to connect on an incoming conference

    - by Fábio Batista
    Hello, SO. I'm working with the OCS UCCAPI, developing a custom OCS client. I'm currently having a hard time detecting what "kind" of Conference my client is being invited to. Using the Office Communicator client, I can start "IM conferences" (by inviting more than 1 person and selecting "start a IM conversation") or "video conferences" (by selecting more than 1 person and selecting "start a video call"). The Office Communicator client, on the invitees' end, starts correctly the appropriate session (just IM, just Video or IM+Video). However, when receiving the conference invite on my custom client, there's no data about the kind of session I'm being invited. I need this information, in order to make a decision whether or not to connect to the AV MCU and capture/show video. I've tried already: When handling _IUccSessionManagerEvents.OnIncomingSession, parse the RemoteSessionDescription property on the UccIncomingInvitationEvent object: no luck, the only data about the conference modality is an element on the XML about the IM being enabled or not (<im available="true"> or <im available="false">), but nothing about the session having video available or not. When handling _IUccConferenceSessionEvents.OnEnter, check the Media property on the UccConferenceSession. Don't work, all media types are present (MESSAGE, AUDIO, VIDEO, DATA e TELEPHONY), regardless of the type of conference I'm being invited. Also when handling _IUccConferenceSessionEvents.OnEnter, check the Entities collection on the UccConferenceView object, to check which MCUs are enabled for this conference. Don't work either, all MUCs are listed as available (IM, AV, DATA and CONTROL), regardless of the type of conference I'm being invited. I'm running out of ideas. Some references I'm using: http://msdn.microsoft.com/en-us/library/bb664307.aspx http://msdn.microsoft.com/en-us/library/dd170830.aspx Thanks a lot.

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  • Java and tomcat vs ASP.NET and IIS

    - by Mark Cooper
    Until recently I'd considered myself to be a pretty good web programmer (coming up for 10yrs commercial experience on a variety of e-commerce, static and enterprise applications). I'm self taught and have always used the Microsoft product stack (ASP, ASP.NET)... My applications are always functional, relatively bug free, but have never been lightening quick. As a frequent web user I always found this to be the norm... how fast are the websites from the big tech players (eBay, Facebook, Microsoft, IBM, Dell, Telerik etc etc) - in truth none are particularly fast. I always attributed this to "the way things are with web apps"... ...then I cam across a product called Jira from atlasian and this has stopped me in my tracks... This application is fast, and I mean blindingly fast.. too fast to time the switches between pages, fully live content, lots of images and data and cross references etc etc... I run this on an intranet, with a large application DB, and this is running on a very normal server (single processor, SATA HDD, 8GB RAM). Am I missing something?? Are my programming techniques that bad?? I am wondering if this speed gain is down to it being written in Java and running on Tomcat. Does anyone have any benchmarks to compare JSP / ASP or Tomcat / IIS??? Thanks, Mark NOTE: this isn't a blatant plug for Jira. I don't work for them or have any affiliation to them... but I would like to be able to write applications like them :)

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  • Rails has_and_belongs_to_many relationship question

    - by Kevin Whitaker
    Hello all, I'm sure that this question has been asked somewhere before, as the habtm relationship seems to be very confusing. I have two models, users and promotions. The idea is that a promotion can have many users, and a user can have many promotions. class User < ActiveRecord::Base has_and_belongs_to_many :promotions end class Promotion < ActiveRecord::Base has_and_belongs_to_many :users end I also have a promotions_users table/model, with no id of its own. It references user_id and promotions_id class PromotionsUsers < ActiveRecord::Base end So, how do I add a user to a promotion? I've tried something like this: user = User.find(params[:id]) promotion = Promotion.find(params[:promo_id]) promo = user.promotions.new(promo) This results in the following error: NoMethodError: undefined method `stringify_keys!' for #<Promotion:0x10514d420> If I try this line instead: promo= user.promotions.new(promo.id) I get this error: TypeError: can't dup Fixnum I'm sure that there is a very easy solution to my problem, and I'm just not searching for the solution the right way. Thank you for your time, and any help you can provide.

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  • ASP.NET Projects with Two Versions of AjaxControlToolkit

    - by Chris
    In my Solution I have three projects. Project A is a web app and uses version 1.0.10618.0 of the AjaxControlToolkit. I would love to upgrade it to the latest but unfortunately any newer release completely breaks a portion of my site. Project B is also a web app but is a completely new software product and so it uses (and relies on) the latest version of the AjaxControlToolkit. Everything works great. Thought A and B are totally different products they use the same DB and rely on the same ClassLibrary. Project C is a small web app that ties A and B together with certain functionality like forgot password pages. The pages in this app reside in a virtual directory of both A and B. Project C currently uses v1.0.10618.0 of the toolkit so it works with Project A but it fails with project B because the manifest definitions of the dlls don't match (to be expected). What I've done is built a new dll of the toolkit and changed the assembly and namespace to AjaxControlToolkit_v1 and then changed all v1 references to this new dll so the old version and new versions can sit side by side in the same bin folder and nobody complains. I then changed my web.config controls tag to look like this: <add tagPrefix="ajaxToolkit" namespace="AjaxControlToolkit_v1" assembly="AjaxControlToolkit_v1, Version=1.0.10618.0, Culture=neutral, PublicKeyToken=28f01b0e84b6d53e"/> This all works except I get a runtime error of: Unknown server tag 'ajaxToolkit:AnimationExtender'. I can't figure out why this is, any ideas on how to remedy it?

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  • Best cubicle toys for programming

    - by dlamblin
    I need some employee/co-worker Christmas gift ideas. Do you have any good cubicle toys that help you to do any of: think about programming problems solve programming problems by representing common abstractions can be directly programmed can interface with a PC based IDE to be programmed. it may present problems that can be solved, to kick start problem solving. Disallowed items are: reference material in book, pamphlet, poster or cheat-sheet form, even if it has kick ass pop-cultural references. edibles. [discuss separately] things that need their own lab-space and/or extensive tools to be worked with. So yes, Lego Mindstorms come to mind, but they aren't cubicle toys because they cost more than cubicle toys would, and they have too many losable parts. comments on the answers so far: The 20 Questions game sounds quite neat as it could get you thinking; The bean balls could be used as tokens in a problem, so I can see that working. The magnetic toys like ball of whacks or the ball-and-stick ones present hands on fun of a structural nature... now can there be a similar hands on fun toy that aids in representing a solution to a problem? The Gui Mags clearly could, but they're quite utility oriented. The AVR Butterfly is less of a toy but definitely priced attractively, cheaper and more responsive than a basic stamp. I'm not going to pick an answer; there's several great suggestions here. Thank you.

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