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  • WCF: How can I send data while gracefully closing a connection?

    - by mafutrct
    I've got a WCF service that offers a Login method. A client is required to call this method (due to it being the only IsInitiating=true). This method should return a string that describes the success of the call in any case. If the login failed, the connection should be closed. The issue is with the timing of the close. I'd like to send the return value, then immediately close the connection. string Login (string name, string pass) { if (name != pass) { OperationContext.Current.Channel.Close (); return "fail"; } else { return "yay"; } } The MSDN states that calling Close on the channel causes an ICommunicationObject to gracefully transition from the Opened state to the Closed state. The Close method allows any unfinished work to be completed before returning. For example, finish sending any buffered messages). This did not work for me (or my understanding is wrong), as the close is executed immediately - WCF does not wait for the Login method to finish executing and return a string but closes the connection earlier. Therefore I assume that calling Close does not wait for the running method to finish. Now, how can I still return a value, then close?

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  • How can i open Thickbox from a form and feed it with data ?

    - by Mark Dekker
    I have a simple search php script, within that script there is some html and javascript to make a search input field and a button. What i am trying to do is when someone enters a search, and presses submit, thickbox opens, and the results will be displayed in the thickbox. What i have so far is the search field and button, when i press submit, it briefly shows the thickbox, and than is overloaded by the result page, but than with no search results. Here is the code: <form method="get"> <input type="text" name="merk" size=10 style="font-weight: bold; background-color:#D5DF23;">&nbsp;&nbsp; <input type="image" name="merk" class="thickbox" onclick="document.location.href='searcher.php?keepThis=true&TB_iframe=true&height=520&width=800';" src="zoek1.jpg" width="110" alt="Zoek" onMouseOver="this.src='zoek2.jpg'" onMouseOut="this.src='zoek1.jpg'"> </form></input>

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  • zlib memory usage / performance. With 500kb of data.

    - by unixman83
    Is zLib Worth it? Are there other better suited compressors? I am using an embedded system. Frequently, I have only 3MB of RAM or less available to my application. So I am considering using zlib to compress my buffers. I am concerned about overhead however. The buffer's average size will be 30kb. This probably won't get compressed by zlib. Anyone know of a good compressor for extremely limited memory environments? However, I will experience occasional maximum buffer sizes of 700kb, with 500kb much more common. Is zlib worth it in this case? Or is the overhead too much to justify? My sole considerations for compression are RAM overhead of algorithm and performance at least as good as zlib.

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  • ASP.NET Charting control - How to display Y values when no point data is specified?

    - by James
    I have an ASP.NET chart of which the Y value is calculated based on the highest Y value point. The issue I have is if there are no Y points which exceed 0 then I can't get any labels to display. Here is a good day example: Some Name | 23 Some Name | 45 Some Name | 3 -------------- 0% 25% 50% Here is what I am getting if NO Y values are greater than 0 Some Name | Some Name | Some Name | -------------- What I need is for it to display: Some Name |0 Some Name |0 Some Name |0 -------------- 0% 100% Any ideas?

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  • Generic structure for performing string conversion when data binding.

    - by Rohan West
    Hi there, a little while ago i was reading an article about a series of class that were created that handled the conversion of strings into a generic type. Below is a mock class structure. Basically if you set the StringValue it will perform some conversion into type T public class MyClass<T> { public string StringValue {get;set;} public T Value {get;set;} } I cannot remember the article that i was reading, or the name of the class i was reading about. Is this already implemented in the framework? Or shall i create my own?

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  • A format for storing personal contacts in a database

    - by Gart
    I'm thinking of the best way to store personal contacts in a database for a business application. The traditional and straightforward approach would be to create a table with columns for each element, i.e. Name, Telephone Number, Job title, Address, etc... However, there are known industry standards for this kind of data, like for example vCard, or hCard, or vCard-RDF/XML or even Windows Contacts XML Schema. Utilizing an standard format would offer some benefits, like inter-operablilty with other systems. But how can I decide which method to use? The requirements are mainly to store the data. Search and ordering queries are highly unlikely but possible. The volume of the data is 100,000 records at maximum. My database engine supports native XML columns. I have been thinking to use some XML-based format to store the personal contacts. Then it will be possible to utilize XML indexes on this data, if searching and ordering is needed. Is this a good approach? Which contacts format and schema would you recommend for this? Edited after first answers Here is why I think the straightforward approach is bad. This is due to the nature of this kind of data - it is not that simple. The personal contacts it is not well-structured data, it may be called semi-structured. Each contact may have different data fields, maybe even such fields which I cannot anticipate. In my opinion, each piece of this data should be treated as important information, i.e. no piece of data could be discarded just because there was no relevant column in the database. If we took it further, assuming that no data may be lost, then we could create a big text column named Comment or Description or Other and put there everything which cannot be fitted well into table columns. But then again - the data would lose structure - this might be bad. If we wanted structured data then - according to the database design principles - the data should be decomposed into entities, and relations should be established between the entities. But this adds complexity - there are just too many entities, and lots of design desicions should be made, like "How do we store Address? Personal Name? Phone number? How do we encode home phone numbers and mobile phone numbers? How about other contact info?.." The relations between entities are complex and multiple, and each relation is a table in the database. Each relation needs to be documented in the design papers. That is a lot of work to do. But it is possible to avoid the complexity entirely - just document that the data is stored according to such and such standard schema, period. Then anybody who would be reading that document should easily understand what it was all about. Finally, this is all about using an industry standard. The standard is, hopefully, designed by some clever people who anticipated and described the structure of personal contacts information much better than I ever could. Why should we all reinvent the wheel?? It's much easier to use a standard schema. The problem is, there are just too many standards - it's not easy to decide which one to use!

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  • How to handle Oracle Stored Proc with ASP.NET and Oracle Data Provider?

    - by Matt
    I have been struggling with this for quite some time having been accustomed to SQL Server. I have the following code and I have verified that the OracleDbType's are correct and have verified that the actual values being passed to the parameters match. I think my problem may rest with the return value. All it does is give me the row count. I read somewhere that the return parameter must be set at the top. The specific error I am getting says, PLS-00306: wrong number or types of arguments in call to \u0027INSERT_REC\u0027 ORA-06550: line 1, column 7:\nPL/SQL: Statement ignored The stored procedure is: PROCEDURE INSERT_REC ( A_MILL_CENTER IN GRO_OWNER.MOVEMENT.MILL_CENTER%TYPE, --# VARCHAR2(10) A_INGREDIENT_CODE IN GRO_OWNER.MOVEMENT.INGREDIENT_CODE%TYPE, --# VARCHAR2(50) A_FEED_CODE IN GRO_OWNER.MOVEMENT.FEED_CODE%TYPE, --# VARCHAR2(30) --# A_MOVEMENT_TYPE should be ‘RECEIPT’ for ingredient receipts A_MOVEMENT_TYPE IN GRO_OWNER.MOVEMENT.MOVEMENT_TYPE%TYPE, --# VARCHAR2(10) A_MOVEMENT_DATE IN VARCHAR2, --# VARCHAR2(10) A_MOVEMENT_QTY IN GRO_OWNER.MOVEMENT.MOVEMENT_QTY%TYPE, --# NUMBER(12,4) --# A_INVENTORY_TYPE should be ‘INGREDIENT’ or ‘FINISHED’ A_INVENTORY_TYPE IN GRO_OWNER.MOVEMENT.INVENTORY_TYPE%TYPE, --# VARCHAR2(10) A_CREATE_USERID IN GRO_OWNER.MOVEMENT.CREATE_USERID%TYPE, --# VARCHAR2(20) A_RETURN_VALUE OUT NUMBER --# NUMBER(10,0) ); My code is as follows: //3 items hardcoded for now string millCenter = "0010260510"; string movementType = "RECEIPT"; string feedCode = "test this"; string userID = "GRIMMETTM"; string inventoryType = "INGREDIENT"; //set to FINISHED for feed stuff string movementDate = theData[i]; string ingCode = System.Text.RegularExpressions.Regex.Match(theData[i + 1], @"^([0-9]*)").ToString(); //int pounds = Convert.ToInt32(theData[i + 2].Replace(",", "")); int pounds = 100; //setup parameters OracleParameter p9 = new OracleParameter("A_RETURN_VALUE", OracleDbType.Int32, 30); p9.Direction = ParameterDirection.ReturnValue; oraCmd.Parameters.Add(p9); OracleParameter p1 = new OracleParameter("A_MILL_CENTER", OracleDbType.Varchar2, 10); p1.Direction = ParameterDirection.Input; p1.Value = millCenter; oraCmd.Parameters.Add(p1); OracleParameter p2 = new OracleParameter("A_INGREDIENT_CODE", OracleDbType.Varchar2, 50); p2.Direction = ParameterDirection.Input; p2.Value = ingCode; oraCmd.Parameters.Add(p2); OracleParameter p3 = new OracleParameter("A_FEED_CODE", OracleDbType.Varchar2, 30); p3.Direction = ParameterDirection.Input; p3.Value = feedCode; oraCmd.Parameters.Add(p3); OracleParameter p4 = new OracleParameter("A_MOVEMENT_TYPE", OracleDbType.Varchar2, 10); p4.Direction = ParameterDirection.Input; p4.Value = movementType; oraCmd.Parameters.Add(p4); OracleParameter p5 = new OracleParameter("A_MOVEMENT_DATE", OracleDbType.Varchar2, 10); p5.Direction = ParameterDirection.Input; p5.Value = movementDate; oraCmd.Parameters.Add(p5); OracleParameter p6 = new OracleParameter("A_MOVEMENT_QTY", OracleDbType.Int32, 12); p6.Direction = ParameterDirection.Input; p6.Value = pounds; oraCmd.Parameters.Add(p6); OracleParameter p7 = new OracleParameter("A_INVENTORY_TYPE", OracleDbType.Varchar2, 10); p7.Direction = ParameterDirection.Input; p7.Value = inventoryType; oraCmd.Parameters.Add(p7); OracleParameter p8 = new OracleParameter("A_CREATE_USERID", OracleDbType.Varchar2, 20); p8.Direction = ParameterDirection.Input; p8.Value = userID; oraCmd.Parameters.Add(p8); //open and execute oraConn.Open(); oraCmd.ExecuteNonQuery(); oraConn.Close();

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  • How do I read live camera data on the iPhone (like Microsoft Tag Reader)?

    - by Bill
    While the user is still in UIImagePickerController, I'd like to be able to get a UIImage representation of the image in the camera, make some changes to the image, and then display the altered image instead of the image coming directly from the camera. How can I do this? I tried setting a timer and calling takePicture, but calling it seemed to have no effect. The documentation says: Calling this method while an image is being captured has no effect. You must wait until the associated delegate object receives an imagePickerController:didFinishPickingMediaWithInfo: message before you can capture another picture. So how can I do this? I know that it's possible, since apps like Tag Reader are able to detect when something specific rolls in front of the camera. Thanks!

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  • How to access generic property without knowing the closed generic type

    - by Martin Booka Weser
    I have a generic Type as follows public class TestGeneric<T> { public T Data { get; set; } public TestGeneric(T data) { this.Data = data; } } If i have now an object (which is coming from some external source) from which i know that it's type is of some closed TestGeneric<, but i don't know the TypeParameter T. Now I need to access the Data of my object. Problem is that i can't cast the object, since i don't know exactly to which closed TestGeneric. I use // thx to http://stackoverflow.com/questions/457676/c-reflection-check-if-a-class-is-derived-from-a-generic-class private static bool IsSubclassOfRawGeneric(Type rawGeneric, Type subclass) { while (subclass != typeof(object)) { var cur = subclass.IsGenericType ? subclass.GetGenericTypeDefinition() : subclass; if (rawGeneric == cur) { return true; } subclass = subclass.BaseType; } return false; } to make sure, my object is of the generic type. The code in question is as follows: public static void Main() { object myObject = new TestGeneric<string>("test"); // or from another source if (IsSubclassOfRawGeneric(typeof(TestGeneric<>), myObject.GetType())) { // the following gives an InvalidCastException // var data = ((TestGeneric<object>)myObject).Data; // if i try to access the property with reflection // i get an InvalidOperationException var dataProperty = typeof(TestGeneric<>).GetProperty("Data"); object data = dataProperty.GetValue(myObject, new object[] { }); } } I need the Data regardless of its type (well, if i could ask for its type using GetType() would be fine, but not necessary) since i just want to dump it in xml using ToString(). Any suggestions? Thanx.

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  • Using PHP to extract data from an ATOM feed and using it reverse lookup coordinates to an actual add

    - by gbhall
    Basically I have a public feed: http://www.google.com/latitude/apps/badge/api?user=-1671995934285587708&type=atom If you go to my Google Profile you can see it says: "Gareth is in 6 Seaside Gardens, Mullaloo WA 6027, Australia (1 minute ago)" google.com/profiles/Gareth.B.Hall How can I, using PHP, display my location on a website the same way it's displayed on my Google Profile? Thanks

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  • set radio button in jquery dialog

    - by RememberME
    I have the following if/else on another form and it works perfectly. I've now put it on a form which shows as a jquery dialog. Every alert along the way shows the correct assignment, but when the dialog opens, neither button is selected. $("#create-company").click(function() { alert($('#primary_company').val().length); if ($('#primary_company').val().length > 0) { alert("if secondary"); $('#secondary').attr('checked', 'true'); var id = $("input:radio[name='companyType']:checked").attr('id'); alert(id); } else { alert("else primary"); $('#primary').attr('checked', 'true'); $('#sec').hide(); var id = $("input:radio[name='companyType']:checked").attr('id'); alert(id); } var id = $("input:radio[name='companyType']:checked").attr('id'); alert(id); $('#popupCreateCompany').dialog('open'); }); Dialog: $('#popupCreateCompany').dialog( { autoOpen: false, modal: true, buttons: { 'Add': function() { var dialog = $(this); var form = dialog.find('input:text, select'); $.post('/company/post', $(form).serialize(), function(data) { if (data.Result == "success") { var id = $("input:radio[name='companyType']:checked").attr('id'); if (id == "primary") { $('#company').append($('<option></option>').val(data.company_id).html(data.company_name).attr("selected", true)); $('#primary_company').append($('<option></option>').val(data.company_id).html(data.company_name).attr("selected", true)); $('#company_id').append($('<option></option>').val(data.company_id).html(data.company_name).attr("selected", true)); } else { $('#company_id').append($('<option></option>').val(data.company_id).html(data.company_name)); } dialog.dialog('close'); alert("Company " + data.company_name + " successfully added."); } else { alert(data.Result); }; }, "json") }, 'Cancel': function() { $(this).dialog('close'); } } }); Radio buttons: <label>Company Type:</label> <label for="primary"><input onclick="javascript: $('#sec').hide('slow');$('#primary_company').find('option:first').attr('selected','selected');" type="radio" name="companyType" id="primary" />Primary</label> <label for="secondary"><input onclick="javascript: $('#sec').show('slow');" type="radio" name="companyType" id="secondary" />Subsidiary</label> <div id="sec"> <fieldset> <label for="primary_company">Primary Company:</label> <%= Html.DropDownList("primary_company", Model.SelectPrimaryCompanies, "** Select Primary Company **") %> </fieldset> </div>

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  • How can I make kml data in google earth look like google maps?

    - by celenius
    I have a program that generates a .shp file, and exports this as a kml file. I would like to be able to display my output using the standard google map 'map' style (gray background, yellow streets, etc) in google earth. Is there a style guide or method that I should be using? Any thoughts appreciated - I wasn't sure how to structure this question. Thank you.

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  • Create a many to many relationship in Entity Framework skipping extra data in the link table.

    - by Paul Smith
    I would like to model the following many to many relationship. Table A ID Field1 Field2 Table B ID Field1 Field2 LinkTable A_ID B_ID Field_I_want_to_ignore As I understand it, if LinkTable.Field_I_want_to_ignore was not present, the Entity Model Designer would automatically create a Many to Many relationship between entity A and entity B. However, because this field exists in the database the designer won't do it for me. I can delete the Field_I_want_to_ignore from the LinkTable Entity that the designer created for me, but how do I eliminate the LinkTable entity altogether and create the many to many relationship I want? I'm not averse to digging through the XML, just at the moment I can't see how to achieve what I want.

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  • Forcing XDocument.ToString() to include the closing tag when there is no data.

    - by JasonM
    I have a XDocument that looks like this: XDocument outputDocument = new XDocument( new XElement("Document", new XElement("Stuff") ) ); That when I call outputDocument.ToString() Outputs to this: <Document> <Stuff /> </Document> But I want it to look like this: <Document> <Stuff> </Stuff> </Document> I realize the first one is correct, but I am required to output it this way. Any suggestions?

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  • How do I add a header with data to a QTableWidget in Qt?

    - by San Jacinto
    Hi, I'm still learning Qt and I am indebted to the SO community for providing me with great, very timely answers to my Qt questions. Thank you. I'm quite confused on the idea of adding a header to a QTableWidget. What I'd like to do is have a table that contains information about team members. Each row for a member should contain his first and last name, each in its own cell, an email address in one cell, and office in the other cell. I'd to have a header above these columns to name them as appropriate. I'm trying to start off easy and get just the header to display "Last" (as in last name). Here is my code. int column = m_ui-teamTableWidget-columnCount(); m_ui-teamTableWidget-setColumnCount(column+1); QString* qq = new QString("Last"); m_ui-teamTableWidget-horizontalHeader()-model()-setHeaderData(0, Qt::Horizontal, QVariant(QVariant::String, &qq)); My table gets rendered corretly, but the header doesn't contain what I would expect. It contains 1 cell that contains the text "1". I am obviously doing something very silly here that is wrong, but i am lost. I keep pouring over the documentation, finding nothing. Here are the documentation links to the function calls I am making for the very last line. http://doc.trolltech.com/4.5/qtableview.html#horizontalHeader http://doc.trolltech.com/4.5/qabstractitemview.html#model http://doc.trolltech.com/4.5/qabstractitemmodel.html#setHeaderData Thanks for any and all help. Edit: HOW I SOLVED THE PROBLEM Using some help from the accepted answer, I came up with the following code: m_ui-teamTableWidget-setColumnCount(m_ui-teamTableWidget-columnCount()+1); QTableWidgetItem* qtwi = new QTableWidgetItem(QString("Last"),QTableWidgetItem::Type); m_ui-teamTableWidget-setHorizontalHeaderItem(0,qtwi);

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  • How to generate custom JSESSIONID, based on some hash of user's data in order to replicate session

    - by Shaman
    Is it possible to override Tomcat's embedded generator of JSESSIONID, to be able to create custom values of this cookie, based on user's login? Why do I need this: I have a load balancer with "sticky sessions", configured to route requests with the same JSESSIONID to the same server, and I want to prevent situation, when same user can start two different sessions on different servers.

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  • Sorting Arrays by More the One Value, and Prioritizing the Sort based on Column data.

    - by Mark Tomlin
    I'm looking for a way to sort an array, based on the information in each row, based on the information in certain cells, that I'll call columns. Each row has columns that must be sorted based on the priority of: timetime, lapcount & timestamp. Each column cotains this information: split1, split2, split3, laptime, lapcount, timestamp. laptime if in hundredths of a second. (1:23.45 or 1 Minute, 23 Seconds & 45 Hundredths is 8345.) Lapcount is a simple unsigned tiny int, or unsigned char. timestamp is unix epoch. The lowest laptime should be at the get a better standing in this sort. Should two peoples laptimes equal, then timestamp will be used to give the better standing in this sort. Should two peoples timestamp equal, then the person with less of a lapcount get's the better standing in this sort. By better standing, I mean closer to the top of the array, closer to the index of zero where it a numerical array. I think the array sorting functions built into php can do this with a callback, I was wondering what the best approch was for a weighted sort like this would be.

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  • Sorting Arrays by More the One Value, and Prioritizing the Sort based on Column data.

    - by Mark Tomlin
    I'm looking for a way to sort an array (we call this a row), with an array of values (that I'll call columns). Each row has columns that must be sorted based on the priority of: timetime, lapcount & timestamp. Each column cotains this information: split1, split2, split3, laptime, lapcount, timestamp. laptime if in hundredths of a second. (1:23.45 or 1 Minute, 23 Seconds & 45 Hundredths is 8345.) Lapcount is a simple unsigned tiny int, or unsigned char. timestamp is unix epoch. The lowest laptime should be at the get a better standing in this sort. Should two peoples laptimes equal, then timestamp will be used to give the better standing in this sort. Should two peoples timestamp equal, then the person with less of a lapcount get's the better standing in this sort. By better standing, I mean closer to the top of the array, closer to the index of zero where it a numerical array. I think the array sorting functions built into php can do this with a callback, I was wondering what the best approch was for a weighted sort like this would be.

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