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  • Connecting a DomainContext and loading data manually in Silverlight 4 RC application

    - by Redburn
    I am new to WCF & RIA services and have what seems like a basic problem. I have multiple times in my silverlight 4 RC application dragged and dropped from my datasource window to my form and have returned information from the database. However I have a need to query the database for other information (Building a report) When I try to use the following code, I recieve no error, but I also do not get any information back from the service. //Global public UMSDomainContext _umsDomainContext = new UMSDomainContext(); //In the Initialization portion _umsDomainContext.Load(_umsDomainContext.GetUMOptionsQuery()); //Queries var name = from n in _umsDomainContext.UMOptions select n.DistrictName; var street1 = from c in _umsDomainContext.UMOptions select c.Address1; var street2 = from c in _umsDomainContext.UMOptions select c.Address2; var city = from c in _umsDomainContext.UMOptions select c.City; var zip = from c in _umsDomainContext.UMOptions select c.Zip; Im calling the current additional assem. using System.Linq; using System.ServiceModel.DomainServices.Client; using System.ComponentModel.DataAnnotations; using MTT.Web;

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  • XML flat file vs. relational database backend

    - by donpal
    Most projects now need some form of a database. When someone says database, I usually think relational databases, but I still hear about flat file XML databases. What parameters do you take into consideration when deciding between a "real" database and a flat-file XML database. When should one be used over the other, and under what circumstances should I never consider using a flat file (or vice versa a relational) database?

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  • How do I work out IEEE 754 64-bit Floating Point Double Precision?

    - by yousef gassar
    enter code herehello i have done it in 32 but i could dont do it in 62bits please i need help I am stuck on this question and need help. I don't know how to work it out. This is the question. Below are two numbers represented in IEEE 754 64-bit Floating Point Double Precision, the bias of the signed exponent is -1023. Any particular real number ‘N’ represented in 64-bit form (i.e. with the following bit fields; 1-bit Sign, 11-bit Exponent, 52-bit Fraction) can be expressed in the form ±1.F2 × 2X by substituting the bit-field values using formula (IV.I): N = (-1) S × 1.F2 × 2(E – 1023) for 0 < E < 2047.........................….(IV.I) Where N= the number represented, S=Sign bit-value, E=Exponent=X +1023, F=Fraction or Mantissa are the values in the 1, 11 and 52-bit fields respectively in the IEEE 754 64-bit FP representation. Using formula (IV.I), express the 64-bit FP representation of each number as: (i) A binary number of the form:- ±1.F2 × 2X (ii) A decimal number of the form:- ±0.F10 × 10Y {limit F10 to 10 decimal places} Sign 0 1 Exponent 1000 0001 001 11 Fraction 1111 0111 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 52 Sign 1 1 Exponent 1000 0000 000 11 Fraction 1001 0010 0001 1111 1011 0101 0100 0100 0100 0010 1101 0001 1000 52 I know I have to use the formula for each of the these but how do I work it out? Is it like this? N = (-1) S × 1.F2 × 2(E – 1023) = 1 x 1.1111 0111 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 x 1000 0001 00111 (-1023)?

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  • WPF: Change the style of a ViewBox depending upon the amount of data

    - by Brett Rigby
    Hi there, I have a WPF app that has a ViewBox to display the items in my collection, diplaying a 2-column grid for my results. What I'd like to do is, depending on the number of items in my collection, change the number of columns. E.g if there are < 10 items in the list, then show them in just 1 column; If there are 10 items in my list, then show them in 2 columns; If there are 20 items in my list, then show 3 columns. Here's what I have at present: <Viewbox> <ItemsControl ItemsSource="{Binding myCollection}" Style="{DynamicResource myStyle}" /> </Viewbox> Here's what myStyle currently defines: <Style x:Key="myStyle" TargetType="{x:Type ItemsControl}"> <Setter Property=ItemsControl.ItemsPanel"> <Setter.Value> <ItemsPanelTemplate> <UniformGrid Columns="2" /> </ItemsPanelTemplate> </Setter.Value> </Setter> </Style> How can I make this code work to the above requirement? Thanks.

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  • Android - Redirect sending of SMS message

    - by Donal Rafferty
    I currently use a ContentObserver to listen for changes in the SMS ContentProvider and tell my application whether a message has been sent or received. Upon getting notification that a message is being sent I would like to present the user the option to send that SMS normally over GSM/CDMA or if connected to Wifi to send the SMS over an ip connection. I am aware of how to present my own application as an option to create and send an SMS when a user clicks on a contacts information and "Send SMS" but this is not what I want. I want the user to be able to use the native or a 3rd party SMS application and when they try to send an SMS present them with a dialog screen giving them the option to send the SMS in whichever direction they want. So is it possible that once I get notified an SMS is being sent to pause it, allow the user to pick the desired route to send it and then change the sms from being sent over GSM/CDMA to being sent using a protocol over IP if required?

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  • Databinding gives "System.Data.DataRowView" instead of actual values

    - by iTayb
    This is my code: string SQL = "SELECT email FROM members WHERE subscribe=true"; string myConnString = Application["ConnectionString"].ToString(); OleDbConnection myConnection = new OleDbConnection(myConnString); OleDbCommand myCommand = new OleDbCommand(SQL, myConnection); myConnection.Open(); OleDbDataAdapter MyAdapter = new OleDbDataAdapter(myCommand); DataSet ds = new DataSet(); MyAdapter.Fill(ds); MailsListBox.DataSource = ds; MailsListBox.DataBind(); GridView1.DataSource = ds; GridView1.DataBind(); myConnection.Close(); And so it looks: As you see, the GridView shows the dataset just fine, and the ListBox fails it. What happened? How can I fix it? Thank you very much.

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  • Nullreferenceexception when adding a GData.Extensions.Reminder to Reminders

    - by user283182
    Hello again, I think the title says it all. I'm using Reminder fifteenMinReminder = new Reminder(); fifteenMinReminder.Minutes = 15; fifteenMinReminder.Method = Reminder.ReminderMethod.email; entry.Reminders.Add(fifteenMinReminder); on a brand new entry (where Reminder and Reminders are Nothing), but I cannot add a reminder using the above code (taken straight from the Google Docs), or set the entry.Reminder to fifteenMinReminder directly either. What am I doing wrong? I've had no trouble .adding When and Where's to the entry, but the Reminder doesn't want to follow the same pattern. Any ideas?

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  • Passing data to Winforms UI using BeginInvoke

    - by Bi
    I am a C# newbie and have a class that needs to pass row information to a grid in the windows form. What is the best way to do it? I have put in some example code for better understanding. public class GUIController { private My_Main myWindow; public GUIController( My_Main window ) { myWindow = window; } public void UpdateProducts( List<myProduct> newList ) { object[] row = new object[3]; foreach (myProduct product in newList) { row[0] = product.Name; row[1] = product.Status; row[2] = product.Day; //HOW DO I USE BeginInvoke HERE? } } } And the form class below: public class My_Main : Form { //HOW DO I GO ABOUT USING THIS DELEGATE? public delegate void ProductDelegate( string[] row ); public static My_Main theWindow = null; static void Main( ) { Application.EnableVisualStyles(); Application.SetCompatibleTextRenderingDefault(false); theWindow = new My_Main(); Application.Run(theWindow); } private void My_Main_Load( object sender, EventArgs e ) { /// Create GUIController and pass the window object gui = new GUIController( this ); } public void PopulateGrid( string[] row ) { ProductsGrid.Rows.Add(row); ProductsGrid.Update(); } }

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  • Using complex data types from Java in Axis webservice

    - by Manuel Ferreria
    I am currently developing a Java app which handles a SOAP webservice. The problem lies after I parse the WSDL [the Parser object from Apache Axis does it for me], and I create the call. When I try to invoke it, I have to pass a Object[] to assign the parameters [taken from the Action of the WSDL]. A normal action is easy, but when I have custom datatypes, I can't get it to fill it out for me. I try to pass Object[]{ new Object { }}, but it assigns the first field instead. I can't pass it already processed, because it changes the '< ' to '--lt --gt', and the server doesn't recognize it'. This is a fragment of the WSDL. <s:element name="FERecuperaQTYRequest"> <s:complexType> <s:sequence> <s:element minOccurs="0" maxOccurs="1" name="argAuth" type="tns:FEAuthRequest" /> </s:sequence> </s:complexType> </s:element> <s:complexType name="FEAuthRequest"> <s:sequence> <s:element minOccurs="0" maxOccurs="1" name="Token" type="s:string" /> <s:element minOccurs="0" maxOccurs="1" name="Sign" type="s:string" /> <s:element minOccurs="1" maxOccurs="1" name="cuit" type="s:long" /> </s:sequence> </s:complexType> And this is the troublesome Java Fragment QTY = (String) call.invoke ( new Object[]{ new Object[]{ tokenConexion.getToken (), tokenConexion.getSign (), tokenConexion.getCUIT () } });

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  • import txt files using excel interop in C# (QueryTables.Add)

    - by kite
    Hi all, I am trying to insert text files into excel cell using Querytables.Add; no error, but the worksheet is empty. except for the single cell manipulation using Value2 property. I already using macro to record the object used. Can you help me on this(I am using vs2008, C# , excel 2003 and 2007; both shown empty cell). Below is my code; thanks for your help Application application = new ApplicationClass(); try { object misValue = Missing.Value; wbDoc = application.Workbooks.Open(flnmDoc, misValue, misValue, misValue, misValue, misValue, misValue, misValue, misValue, misValue, misValue, misValue, misValue, misValue, misValue); wsRefDocBudgetOwner = (Worksheet)wbDoc.Worksheets[2]; Range lRange = wsRefDocBudgetOwner.get_Range("B2", "B25"); var temp2 = wsRefDocBudgetOwner.QueryTables; var temp = temp2.Add(@"TEXT;d:\temp\config ssas.txt", lRange, Type.Missing); //temp.RefreshStyle = XlCellInsertionMode.xlInsertDeleteCells; //temp.RefreshOnFileOpen = true; wsRefDocBudgetOwner.get_Range("B1", "B1").Value2 = "Lgfdgast adsffdafadfads"; wbDoc.Save(); //wbDoc.SaveAs(flnmDoc2, misValue, misValue, misValue, misValue, misValue, XlSaveAsAccessMode.xlExclusive, // misValue, misValue, misValue, misValue, misValue); wbDoc.Close(Missing.Value, Missing.Value, Missing.Value); } finally { application.Quit(); }

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  • filling array gradually with data from user

    - by neville
    I'm trying to fill an array with words inputted by user. Each word must be one letter longer than previous and one letter shorter than next one. Their length is equal to table row index, counting from 2. Words will finally create a one sided pyramid, like : A AB ABC ABCD Scanner sc = new Scanner(System.in); System.out.println("Give the height of array: "); String[] words = new String[height]; for(int i=2; i<height+2; i++){ System.out.println("Give word with "+i+" letters."); words[i-2] = sc.next(); while( words[i-2].length()>i-2 || words[i-2].length()<words[i-3].length() ){ words[i-2] = sc.next(); } } Currently the while loop doesn't influence scanner at all :/

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  • objc_exception_throw When Returning NSManagedObject

    - by spamguy
    I have a method dedicated to finding an NSManagedObject ('company') using a supplied NSString and, if it's not found, creating a new one and returning it. As far as I know it's fully inited and the method works perfectly. That is, until the line after the return statement, when the app crashes with an objc_exception_throw. I googled this and couldn't find what causes it, only how to use it in breakpoint debugging. What's wrong with this method, and why is it throwing specifically this exception? - (NSManagedObject*) getCompanyObject:(NSString*)theCompany { NSError *error = nil; NSManagedObjectContext *moc = [[self delegate] managedObjectContext]; NSFetchRequest *fetch = [[[NSFetchRequest alloc] init] autorelease]; NSEntityDescription *entityDescription = [NSEntityDescription entityForName:@"Company" inManagedObjectContext:moc]; [fetch setEntity:entityDescription]; // object to be returned NSManagedObject *companyObject = [[NSManagedObject alloc] initWithEntity:entityDescription insertIntoManagedObjectContext:moc]; // set predicate (company name) NSPredicate *pred = [NSPredicate predicateWithFormat:[NSString stringWithFormat:@"name = \"%@\"", theCompany]]; [fetch setPredicate:pred]; NSArray *response = [moc executeFetchRequest:fetch error:&error]; if ([response count] == 0) // empty resultset --> no companies with this name { [companyObject setValue:theCompany forKey:@"name"]; NSLog(@"%@ not found. Adding.", theCompany); } else [companyObject setValue:[[response objectAtIndex:0] valueForKey:@"name"]]; return companyObject; }

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  • cakePHP paginate with post data without sessions, serialization or post to get

    - by openprojdevel
    I have created a small search and filter form method post in controller/index, which posts to it self the conditions and fields to paginate ( $this-paginate($conditions) ) However that is good for the first page, the subsequent pages the filer conditions are lost. pagination passArgs supports get variables well. Is there an un complex way to pass the post conditions to the other paginated pages? The method I have looked at is pass the $conditions in session , which isnt without complexity of assigning session and unset the session on submitting the form again (more refinements to the filter criteria by the user ) The other method is passing the $conditions as serialized string url_encode as an get parameter. Is there an good cake way to do this more like passArgs, sessions and url encode do not look like cake style. Thanks

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  • Adding a sortcomparefunction to Dynamic Data Grid in flex

    - by Tom
    Hi, I am trying to create a dynamic datagrid in Flex 3, I have a list of columns a list of objects which correspond to datapoints for those columns which I fetch from a url. While the grid works perfectly fine the problem is that sorting on the columns is done in lexical order. I am aware that this can be fixed by adding a sortcomparefunction to a column, which is not easy for this case. I have tried doing var dgc:DataGridColumn = new DataGridColumn(dtf); f1[dtf] = function(obj1:Object, obj2:Object):int { return Comparators.sortNumeric(obj1[dtf],obj2[dtf]); }; dgc.sortCompareFunction = f1[dtf];` But the problem is that the function object that I am creating here is being overwritten in every iteration (as I am adding columns) and eventually all the columns will have sorting done only on the last column added. Suggestions please.

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  • NHibernate CreateSQLQuery data conversion from bit to boolean error

    - by RemotecUk
    Hi, Im being a bit lazy in NHibernate and using Session.CreateSqlQuery(...) instead of doing the whole thing with Lambda's. Anyway what struct me is that there seems to be a problem converting some of the types returned from (in this case the MySQL) DB into native .Net tyes. The query in question looks like this.... IList<Client> allocatableClients = Session.CreateSQLQuery( "select clients.id as Id, clients.name as Name, clients.customercode as CustomerCode, clients.superclient as SuperClient, clients.clienttypeid as ClientType " + ... ... .SetResultTransformer(new NHibernate.Transform.AliasToBeanResultTransformer(typeof(Client))).List<Client>(); The type in the database of SuperClient is a bit(1) and in the Client object the type is a bool. The error received is: System.ArgumentException: Object of type 'System.UInt64' cannot be converted to type 'System.Boolean'. It seems strange that this conversion cannot be completed. Would be greatful for any ideas. Thanks.

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  • Reading a document's content from the gdata API?

    - by user246114
    Hi, I'm using the java library to access the gdata api. I just want to be able to print the contents of a document. I setup my project to list all the docs in my feed, now that I have a document listing, I want to print its contents: for (DocumentListEntry entry : feed.getEntries()) { // Ok, how do we print the doc's contents now? entry.getContents(); } It looks like we're supposed to get the URL from the entry, then read the contents at the URL ourselves. I found a post stating that this is how we get that URL: MediaContent content = (MediaContent)entry.getContent(); String url = content.getUri(); but when I try to read from it, I get an html response saying 'this content has moved'. I read that this is because we have to authenticate our http-read method, but I'm not sure how to do that. Is there really no built-in way to do this? Thanks

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  • Netflix prize dataset?

    - by user169410
    Hi, I am looking to work on a machine learning project for my course and I would like to use the netflix prize dataset? But it looks like the contest is closed and the dataset is not available for download in the netflix website. Does anyone who wokred on it has the dataset? If so ,can u share it?

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  • Trie VS Suffix Tree VS Suffix Array

    - by ukrania
    Hello everyone, Which one is the structure that provides best performance results? Trie, Suffix Tree or Suffix Array? There are other equivalent structures? What are good Java implementations of these structures? Thanks for your answers. Best Regards, ukrania

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  • Entity Relationship Diagramming

    - by Ben Aston
    I'd like to improve my understanding of cardinality constraints in ER diagrams. I have two entities: User Location But, I want the relationship between these two entities to be many-to-many (a user can be in many locations and a location can have many users). To do this I need to introduce an association class UserLocation. Is it correct to say I now have 3 entities? If I were to draw an ER diagam of the above, would I draw in the UserLocation entity, and would the cardinality look like this? User 1 ------ * User Location * ------ 1 Location

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  • Accessing SQL server Table is slow -very few data inside

    - by Joseph
    Dear all I have a temp table ,datas keep on coming in and going out. now a days even if there is very few records also if we select ,its taking so long. i cant put index on this table because its a Temp table. The only way i found that drop the table and recreate it.its working very fine. any idea why this is happening?is it like some kind of fragmentation?if there is index ,then we can check the frgment,but if there is no index then waht to do. we are using sql server 2008 64 bit thanks Joseph

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  • SQL Server 2005 database design - many-to-many relationships with hierarchy

    - by Remnant
    Note I have completely re-written my original post to better explain the issue I am trying to understand. I have tried to generalise the problem as much as possible. Also, my thanks to the original people who responded. Hopefully this post makes things a little clearer. Context In short, I am struggling to understand the best way to design a small scale database to handle (what I perceive to be) multiple many-to-many relationships. Imagine the following scenario for a company organisational structure: Textile Division Marketing Division | | ---------------------- ---------------------- | | | | HR Dept Finance Dept HR Dept Finance Dept | | | | ---------- ---------- ---------- --------- | | | | | | | | Payroll Hiring Audit Tax Payroll Hiring Audit Accounts | | | | | | | | Emps Emps Emps Emps Emps Emps Emps Emps NB: Emps denotes a list of employess that work in that area When I first started with this issue I made four separate tables: Divisions - Textile, Marketing (PK = DivisionID) Departments - HR, Finance (PK = DeptID) Functions - Payroll, Hiring, Audit, Tax, Accounts (PK = FunctionID) Employees - List of all Employees (PK = EmployeeID) The problem as I see it is that there are multiple many-to-many relationships i.e. many departments have many divisions and many functions have many departments. Question Giving the database structure above, suppose I wanted to do the following: Get all employees who work in the Payroll function of the Marketing Division To do this I need to be able to differentiate between the two Payroll departments but I am not sure how this can be done? I understand that I could build a 'Link / Junction' table between Departments and Functions so that I can retrieve which Functions are in which Departments. However, I would still need to differentiate the Division they belong to. Research Effort As you can see I am an abecedarian when it comes to database deisgn. I have spent the last two days resaerching this issue, traversing nested set models, adjacency models, reading that this issue is known not to be NP complete etc. I am sure there is a simple solution?

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