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  • Object reference not set to an instance of an object.

    - by Lambo
    I have the following code - private static void convert() { string csv = File.ReadAllText("test.csv"); string year = "2008"; XDocument doc = ConvertCsvToXML(csv, new[] { "," }); doc.Save("update.xml"); XmlTextReader reader = new XmlTextReader("update.xml"); XmlDocument testDoc = new XmlDocument(); testDoc.Load(@"update.xml"); XDocument turnip = XDocument.Load("update.xml"); webservice.singleSummary[] test = new webservice.singleSummary[1]; webservice.FinanceFeed CallWebService = new webservice.FinanceFeed(); foreach(XElement el in turnip.Descendants("row")) { test[0].account = el.Descendants("var").Where(x => (string)x.Attribute("name") == "account").SingleOrDefault().Attribute("value").Value; test[0].actual = System.Convert.ToInt32(el.Descendants("var").Where(x => (string)x.Attribute("name") == "actual").SingleOrDefault().Attribute("value").Value); test[0].commitment = System.Convert.ToInt32(el.Descendants("var").Where(x => (string)x.Attribute("name") == "commitment").SingleOrDefault().Attribute("value").Value); test[0].costCentre = el.Descendants("var").Where(x => (string)x.Attribute("name") == "costCentre").SingleOrDefault().Attribute("value").Value; test[0].internalCostCentre = el.Descendants("var").Where(x => (string)x.Attribute("name") == "internalCostCentre").SingleOrDefault().Attribute("value").Value; MessageBox.Show(test[0].account, "Account"); MessageBox.Show(System.Convert.ToString(test[0].actual), "Actual"); MessageBox.Show(System.Convert.ToString(test[0].commitment), "Commitment"); MessageBox.Show(test[0].costCentre, "Cost Centre"); MessageBox.Show(test[0].internalCostCentre, "Internal Cost Centre"); CallWebService.updateFeedStatus(test, year); } It is coming up with the error of - NullReferenceException was unhandled, saying that the object reference not set to an instance of an object. The error occurs on the first line test[0].account. How can I get past this?

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  • javascript works with mozilla but not with webkit based browsers

    - by GlassGhost
    Im having problems with a css text variable in this javascript with webkit based browsers(Chrome & Safari) but it works in firefox 3.6 importScript('User:Gerbrant/hidePane.js');//Special thanks to Gerbrant for this wonderful script function addGlobalStyle(css) { var head = document.getElementsByTagName('head')[0]; if (!head) { return; } var style = document.createElement('style'); style.type = 'text/css'; style.rel = 'stylesheet'; style.media = 'screen'; style.href = 'FireFox.css'; style.innerHTML = css; head.appendChild(style); } //The page styling var NewSyleText = "h1, h2, h3, h4, h5 {font-family: 'Verdana','Helvetica',sans-serif; font-style: normal; font-weight:normal;}" + "body, b {background: #fbfbfb; font-style: normal; font-family: 'Cochin','GaramondNo8','Garamond','Big Caslon','Georgia','Times',serif;font-size: 11pt;}" + "p { margin: 0pt; text-indent:1.25em; margin-top: 0.3em; }" + "a { text-decoration: none; color: Navy; background: none;}" + "a:visited { color: #500050;}" + "a:active { color: #faa700;}" + "a:hover { text-decoration: underline;}" + "a.stub { color: #772233;}" + "a.new, #p-personal a.new { color: #ba0000;}" + "a.new:visited, #p-personal a.new:visited { color: #a55858;}" + "a.new, #quickbar a.new { color: #CC2200; }" + /* removes "From Wikipedia, the free encyclopedia" for those of you who actually know what site you are on */ "#siteSub { display: none; }" + /* hides the speaker icon in some articles */ "#spoken-icon .image { display:none;}" + /* KHTMLFix.css */ "#column-content { margin-left: 0; }" + /* Remove contents of the footer, but not the footer itself */ "#f-poweredbyico, #f-copyrightico { display:none;}" + /* Needed to show the star icon in a featured article correctly */ "#featured-star div div { line-height: 10px;}" + /* And the content expands to top and left */ "#content {margin: 0; padding: 0; background:none;}" + "#content div.thumb {border-color:white;}" + /* Hiding the bar under the entry header */ "h1.firstHeading { border-bottom: none;}" + /* Used for US city entries */ "#coordinates { top:1.2em;}"; addGlobalStyle(NewSyleText);//inserts the page styling

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  • Zend Framework :: Is this code good for user login (Its begining- because that I want to know if its

    - by Yosef
    Hi, I new in Zend. Main Question: Is this code good for user login (Its beginning- because that I want to know if its can be improve)? Code understanding question: Is every time that in action call to his view- code execution in action not going to next row until view request? (I asking about IndexAction that I write down) Thanks view index.phtml <? echo $this->form controller IndexAction.php public function indexAction() { $form=new Application_Form_Login(); $this->view->form = $form; if ($this->getRequest()->isPost()) { $formData = $this->getRequest()->getPost(); if ($form->isValid($formData)) { echo " test value username: ".$form->getValue('username'); } } } form Login.php public function init() { $this->setMethod('post'); $this->setName('user login'); $username = new Zend_Form_Element_Text('username'); $username->setLabel("username") ->setRequired(true) ->addFilter('StripTags') ->addFilter('StringTrim') ->addValidator('NotEmpty'); $password = new Zend_Form_Element_Password('password'); $password->setLabel('password') ->setRequired(true) ->addFilter('StripTags') ->addFilter('StringTrim') ->addValidator('NotEmpty'); $submit = new Zend_Form_Element_Submit('submit'); $this->addElements(array($username, $password, $submit)); }

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  • radgridview delete update in asp.net

    - by abhi
    i have written the follwing to display data from the datagrid and den insert new rows but how do i perform update and delete plss help here's my code using System; using System.Data; using System.Configuration; using System.Collections; using System.Web; using System.Web.Security; using System.Web.UI; using System.Web.UI.WebControls; using System.Web.UI.WebControls.WebParts; using System.Web.UI.HtmlControls; using Telerik.Web.UI; using System.Data.SqlClient; public partial class Default6 : System.Web.UI.Page { string strQry, strCon; SqlDataAdapter da; SqlConnection con; DataSet ds; protected void Page_Load(object sender, EventArgs e) { strCon = "Data Source=MINETDEVDATA; Initial Catalog=ML_SuppliersProd; User Id=sa; Password=@MinetApps7;"; con = new SqlConnection(strCon); strQry = "SELECT * FROM table1"; da = new SqlDataAdapter(strQry, con); SqlCommandBuilder cmdbuild = new SqlCommandBuilder(da); ds = new DataSet(); da.Fill(ds, "table1"); RadGrid1.DataSource = ds.Tables["table1"]; RadGrid1.DataBind(); Label3.Visible = false; Label4.Visible = false; Label5.Visible = false; txtFname.Visible = false; txtLname.Visible = false; txtDesignation.Visible = false; } protected void Submit_Click(object sender, EventArgs e) { Label3.Visible = true; Label4.Visible = true; Label5.Visible = true; txtFname.Visible = true; txtLname.Visible = true; txtDesignation.Visible = true; } protected void Button2_Click(object sender, EventArgs e) { DataSet ds = new DataSet("EmployeeSet"); da.Fill(ds, "table1"); DataTable EmployeeTable = ds.Tables["table1"]; DataRow row = EmployeeTable.NewRow(); row["Fname"] = txtFname.Text.ToString(); row["Lname"] = txtLname.Text.ToString(); row["Designation"] = txtDesignation.Text.ToString(); EmployeeTable.Rows.Add(row); da.Update(ds, "table1"); //RadGrid1.DataSource = ds.Tables["table1"]; //RadGrid1.DataBind(); txtFname.Text = ""; txtLname.Text = ""; txtDesignation.Text = ""; } protected void RadGrid1_DeleteCommand(object source, GridCommandEventArgs e) { } } }

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  • ASP.NET MVC CRUD PartialView Popup Issue

    - by Smiley Face
    I am creating an MVC website which makes use of Partial Views on Popups to handle all my CRUD transactions. Please note that my application can already handle these CRUD operations perfectly (LINQ-To-Entity). However, I have a problem with my popup forms. Below is the code from my _Add.cshtml: @model MyStore.Models.MyModels.ProductsModel @{ Layout = null; } @using (Ajax.BeginForm("_Add", "Products", new AjaxOptions { InsertionMode = InsertionMode.Replace, HttpMethod = "POST", OnSuccess = "addSuccess" }, new { @id = "addForm" })) { @Html.ValidationSummary(true) <div id="add-message" class="error invisible"></div> <fieldset> <legend>Products</legend> @Html.HiddenFor(m => Model.ProductCode) <div class="editor-label"> @Html.LabelFor(model => model.ProductName) </div> <div class="editor-field"> @Html.EditorFor(model => model.ProductName) @Html.ValidationMessageFor(model => model.ProductName) </div> <div class="editor-label"> @Html.LabelFor(model => model.Price) </div> <div class="editor-field"> @Html.TextBoxFor(model => model.Price) @Html.ValidationMessageFor(model => model.Price) </div> </fieldset> } Below is the code from my Controller: [HttpGet] public ActionResult _Add(string productCode) { ProductsModel model = newProductsModel(); model.ProductCode = ProductCode ; return PartialView(model); } [HttpPost] public JsonResult _Add(ProductsModel model) { if (ModelState.IsValid) { ProductsManager prod = new ProductsManager(); Products pa = new Products(); pa.ProductCode = model.ProductCode; pa.ProductName = model.ProductName; pa.Price = model.Price; prod.AddProduct(pa); return Json(HelperClass.SuccessResponse(pa), JsonRequestBehavior.AllowGet); } else { return Json(HelperClass.ErrorResponse("Please review your form"), JsonRequestBehavior.DenyGet); } } Please note that the _Add.cshtml is a partial view which is being rendered through a Popup.js which I found on the internet. It is rendered through this code: @Html.ActionLink("[Add Product]", "_Add", new { ProductCode = @ViewData["ProductCode"] }, new { @class = "editLink" }) This works okay. I mean it adds product to my database. But my problem is upon clicking the Proceed button, I get this pop-up download dialog from the page: Can somebody please help me with this? I have a hunch it's because of the HttpMethod i'm using (POST, PUT, GET, DELETE) but i'm not really sure which one is right to use or if it really is the problem in the first place. Any help would be greatly appreciated! PS. Sorry for the long post.

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  • How to set RequestBody for Http Delete method.

    - by Tushar Tarkas
    I am writing a client code for a server which Delete API. The API specification requires data to be sent. I am using HttpComponents v3.1 library for writing client code. Using the HtpDelete class I could not find a way to add request data to it. Is there a way to do so ? Below is the code snippet. HttpDelete deleteReq = new HttpDelete(uriBuilder.toString()); List<NameValuePair> postParams = new ArrayList<NameValuePair>(); postParams.add(new BasicNameValuePair(RestConstants.POST_DATA_PARAM_NAME, postData.toString())); try { UrlEncodedFormEntity entity = new UrlEncodedFormEntity(postParams); entity.setContentEncoding(HTTP.UTF_8); //deleteReq.setEntity(entity); // There is no method setEntity() deleteReq.setHeader(RestConstants.CONTENT_TYPE_HEADER, RestConstants.CONTENT_TYPE_HEADER_VAL); } catch (UnsupportedEncodingException e) { logger.error("UnsupportedEncodingException: " + e); } Thanks in advance.

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  • ActionScript Bitmap Filter Tweening

    - by TheDarkIn1978
    i can't seem to tween any bitmap filters. here's my code: var dropShadow:DropShadowFilter = new DropShadowFilter(); mySprite.filters = [dropShadow]; var dropShadowTween:Tween = new Tween(dropShadow, "distance", Regular.easeOut, 4.0, 20, 2, true); what is my mistake? i've also tried the following but it doesn't work: var dropShadowTween:Tween = new Tween(mySprite.filters[0], "distance", Regular.easeOut, 4.0, 20, 2, true);

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  • c# ref keyword... Am i passing my value correctly?

    - by Pandiya Chendur
    Is this a valid value for this c# class default constructor, public class SMSCOMMS { public SMSCOMMS(ref string COMMPORT) { SMSPort = new SerialPort(); SMSPort.PortName = COMMPORT; SMSPort.BaudRate = 9600; SMSPort.Parity = Parity.None; SMSPort.DataBits = 8; SMSPort.StopBits = StopBits.One; SMSPort.Handshake = Handshake.RequestToSend; SMSPort.DtrEnable = true; SMSPort.RtsEnable = true; SMSPort.NewLine = System.Environment.NewLine; ReadThread = new Thread( new System.Threading.ThreadStart(ReadPort)); } and i am passing this value, SMSCOMMS SMSEngine = new SMSCOMMS("COM6"); but it doesn't seem to take "COM6" as a valid ref string... Any suggestion..

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  • BigDecimal, division & MathContext - very strange behaviour

    - by blackliteon
    CentOs 5.4, OpenJDK Runtime Environment (build 1.6.0-b09) MathContext context = new MathContext(2, RoundingMode.FLOOR); BigDecimal total = new BigDecimal("200.0", context); BigDecimal goodPrice = total.divide(BigDecimal.valueOf(3), 2, RoundingMode.FLOOR); System.out.println("divided price=" + goodPrice.toPlainString()); // prints 66.66 BigDecimal goodPrice2 = total.divide(BigDecimal.valueOf(3), new MathContext(2, RoundingMode.FLOOR)); System.out.println("divided price2=" + goodPrice2.toPlainString()); // prints 66 BUG ?

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  • java.io.StreamCorruptedException: invalid stream header: 7371007E

    - by Alex
    Hello, this is pprobably a simple question . I got a client Server application which communicate using objects. when I send only one object from the client to server all works well. when I attempt to send several objects one after another on the same stream I get StreamCorruptedException. can some one direct me to the cause of this error . Thanks client write method private SecMessage[] send(SecMessage[] msgs) { SecMessage result[]=new SecMessage[msgs.length]; Socket s=null; ObjectOutputStream objOut =null; ObjectInputStream objIn=null; try { s=new Socket("localhost",12345); objOut=new ObjectOutputStream( s.getOutputStream()); for (SecMessage msg : msgs) { objOut.writeObject(msg); } objOut.flush(); objIn=new ObjectInputStream(s.getInputStream()); for (int i=0;i<result.length;i++) result[i]=(SecMessage)objIn.readObject(); } catch(java.io.IOException e) { alert(IO_ERROR_MSG+"\n"+e.getMessage()); } catch (ClassNotFoundException e) { alert(INTERNAL_ERROR+"\n"+e.getMessage()); } finally { try {objIn.close();} catch (IOException e) {} try {objOut.close();} catch (IOException e) {} } return result; } server read method //in is an inputStream Defined in the server SecMessage rcvdMsgObj; rcvdMsgObj=(SecMessage)new ObjectInputStream(in).readObject(); return rcvdMsgObj; and the SecMessage Class is public class SecMessage implements java.io.Serializable { private static final long serialVersionUID = 3940341617988134707L; private String cmd; //... nothing interesting here , just a bunch of fields , getter and setters }

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  • How to move a kinect skeleton to another position

    - by Ewerton
    I am working on a extension method to move one skeleton to a desired position in the kinect field os view. My code receives a skeleton to be moved and the destiny position, i calculate the distance between the received skeleton hip center and the destiny position to find how much to move, then a iterate in the joint applying this factor. My code, actualy looks like this. public static Skeleton MoveTo(this Skeleton skToBeMoved, Vector4 destiny) { Joint newJoint = new Joint(); ///Based on the HipCenter (i dont know if it is reliable, seems it is.) float howMuchMoveToX = Math.Abs(skToBeMoved.Joints[JointType.HipCenter].Position.X - destiny.X); float howMuchMoveToY = Math.Abs(skToBeMoved.Joints[JointType.HipCenter].Position.Y - destiny.Y); float howMuchMoveToZ = Math.Abs(skToBeMoved.Joints[JointType.HipCenter].Position.Z - destiny.Z); float howMuchToMultiply = 1; // Iterate in the 20 Joints foreach (JointType item in Enum.GetValues(typeof(JointType))) { newJoint = skToBeMoved.Joints[item]; // This adjust, try to keeps the skToBeMoved in the desired position if (newJoint.Position.X < 0) howMuchToMultiply = 1; // if the point is in a negative position, carry it to a "more positive" position else howMuchToMultiply = -1; // if the point is in a positive position, carry it to a "more negative" position // applying the new values to the joint SkeletonPoint pos = new SkeletonPoint() { X = newJoint.Position.X + (howMuchMoveToX * howMuchToMultiply), Y = newJoint.Position.Y, // * (float)whatToMultiplyY, Z = newJoint.Position.Z, // * (float)whatToMultiplyZ }; newJoint.Position = pos; skToBeMoved.Joints[item] = newJoint; //if (skToBeMoved.Joints[JointType.HipCenter].Position.X < 0) //{ // if (item == JointType.HandLeft) // { // if (skToBeMoved.Joints[item].Position.X > 0) // { // } // } //} } return skToBeMoved; } Actualy, only X position is considered. Now, THE PROBLEM: If i stand in a negative position, and move my hand to a positive position, a have a strange behavior, look this image To reproduce this behaviour you could use this code using (SkeletonFrame frame = e.OpenSkeletonFrame()) { if (frame == null) return new Skeleton(); if (skeletons == null || skeletons.Length != frame.SkeletonArrayLength) { skeletons = new Skeleton[frame.SkeletonArrayLength]; } frame.CopySkeletonDataTo(skeletons); Skeleton skeletonToTest = skeletons.Where(s => s.TrackingState == SkeletonTrackingState.Tracked).FirstOrDefault(); Vector4 newPosition = new Vector4(); newPosition.X = -0.03412333f; newPosition.Y = 0.0407479f; newPosition.Z = 1.927342f; newPosition.W = 0; // ignored skeletonToTest.MoveTo(newPosition); } I know, this is simple math, but i cant figure it out why this is happen. Any help will be apreciated.

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  • Multiple queries using same datacontext throws SqlException

    - by Raj
    I've search control with which I'm trying to implement search as user types something. I'm using Linq to SQL to fire queries against the database. Though it works fine usually, when user types the queries really fast some random SqlException is thrown. These are the two different error message I stumbled across recently: A severe error occurred on the current command. The results, if any, should be discarded. Invalid attempt to call Read when reader is closed. Edit: Included code DataContextFactory class: public DataContextFactory(IConnectionStringFactory connectionStringFactory) { this.dataContext = new RegionDataContext(connectionStringFactory.ConnectionString); } public DataContext Context { get { return this.dataContext; } } public void SaveAll() { this.dataContext.SubmitChanges(); } Registering IDataContextFactory with Unity // Get connection string from Application.Current settings ConnectionInfo connectionInfo = Application.Current.Properties["ConnectionInfo"] as ConnectionInfo; // Register ConnectionStringFactory with Unity container as a Singleton this.container.RegisterType<IConnectionStringFactory, ConnectionStringFactory>(new ContainerControlledLifetimeManager(), new InjectionConstructor(connectionInfo.ConnectionString)); // Register DataContextFactory with Unity container this.container.RegisterType<IDataContextFactory, DataContextFactory>(); Connection string: Data Source=.\SQLEXPRESS2008;User Instance=true;Integrated Security=true;AttachDbFilename=C:\client.mdf;MultipleActiveResultSets=true; Using datacontext from a repository class: // IDataContextFactory dependency is injected by Unity public CompanyRepository(IDataContextFactory dataContextFactory) { this.dataContextFactory = dataContextFactory; } // return List<T> of companies var results = this.dataContextFactory.Context.GetTable<CompanyEntity>() .Join(this.dataContextFactory.Context.GetTable<RegionEntity>(), c => c.regioncode, r => r.regioncode, (c, r) => new { c = c, r = r }) .Where(t => t.c.summary_region != null) .Select(t => new { Id = t.c.compcode, Company = t.c.compname, Region = t.r.regionname }).ToList(); What is the work around?

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  • Overriding constructors

    - by demas
    Here is sample code: class One def initialize(*args) case args.size when 0 puts "one initialize" when 1 puts "one initialize #{args[0]}" end end end class Two def initialize(*args) if args.size == 2 then puts "two initialize #{args[0]} and #{args[1]}" else super(args) end end end one = One.new one = One.new("thing") two = Two.new("some", "other") two = Two.new("some") Now I'm launching the code and getting the error message: [[email protected]][~/temp]% ruby test2.rb one initialize one initialize thing two initialize some and other test2.rb:17:in `initialize': wrong number of arguments(1 for 0) (ArgumentError) from test2.rb:17:in `initialize' from test2.rb:26:in `new' from test2.rb:26:in `<main>' How can I call parent's constructor from class Two ?

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  • Autofac wiring question - beginner

    - by user645788
    Beginners question: Given two classes: Myclass5 and Myclass6 how can one wire up following factory method (returned as Func) such that myclass5 and myclass6 instances and IMyClass that they depend on are all retrieved via autofac (assuming that these three instances are registered). public static MyClass4 FactoryMethod(int nu) { if (nu == 1) return new MyClass5(....); if (nu == 4) return new MyClass6(....); throw new NotImplementedException(); } public abstract class MyClass4 { } public class MyClass5 : MyClass4 { public MyClass5(int nu, IMyClass a) { } } public class MyClass6 : MyClass4 { public MyClass6(int nu, IMyClass a) { } }

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  • Continuous Form, how to add/update records with external connection

    - by Mohgeroth
    EDIT After some more research I found that I cannot use a continuous form with an unbound form since it can only reference a single record at a time. Given that I've altered my question... I have a sample form that pulls out data to enter into a table as an intermediary. Initially the form is unbound and I open connections to two main recordsets. I set the listbox's recordset equal to one of them and the forms recordset equal to the other. The problem is that I cannot add records or update existing ones. Attempting to key into the fields does nothing almost as if the field was locked (Which it is not). Settings of the recordsets are OpenKeyset and LockPessimistic. Tables are not linked, they come from an outside access database seperate from this project and must remain that way. I am using an adodb connection to get the data. Could the separation of the data from the project be causing this? Sample Code from the Form Option Compare Database Option Explicit Private conn As CRobbers_Connections Private exception As CError_Trapping Private mClient_Translations As ADODB.Recordset Private mUnmatched_Clients As ADODB.Recordset Private mExcluded_Clients As ADODB.Recordset //Construction Private Sub Form_Open(Cancel As Integer) Set conn = New CRobbers_Connections Set exception = New CError_Trapping Set mClient_Translations = New ADODB.Recordset Set mUnmatched_Clients = New ADODB.Recordset Set mExcluded_Clients = New ADODB.Recordset mClient_Translations.Open "SELECT * FROM Client_Translation" _ , conn.RBRS_Conn, adOpenKeyset, adLockPessimistic mUnmatched_Clients.Open "SELECT DISTINCT(a.Client) as Client" _ & " FROM Master_Projections a " _ & " WHERE Client NOT IN ( " _ & " SELECT DISTINCT ClientID " _ & " FROM Client_Translation);" _ , conn.RBRS_Conn, adOpenKeyset, adLockPessimistic mExcluded_Clients.Open "SELECT * FROM Clients_Excluded" _ , conn.RBRS_Conn, adOpenKeyset, adLockPessimistic End Sub //Add new record to the client translations Private Sub cmdAddNew_Click() If lstUnconfirmed <> "" Then AddRecord End If End Sub Private Function AddRecord() With mClient_Translations .AddNew .Fields("ClientID") = Me.lstUnconfirmed .Fields("ClientAbbr") = Me.txtTmpShort .Fields("ClientName") = Me.txtTmpLong .Update End With UpdateRecords End Function Private Function UpdateRecords() Me.lstUnconfirmed.Requery End Function //Load events (After construction) Private Sub Form_Load() Set lstUnconfirmed.Recordset = mUnmatched_Clients //Link recordset into listbox Set Me.Recordset = mClient_Translations End Sub //Destruction method Private Sub Form_Close() Set conn = Nothing Set exception = Nothing Set lstUnconfirmed.Recordset = Nothing Set Me.Recordset = Nothing Set mUnmatched_Clients = Nothing Set mExcluded_Clients = Nothing Set mClient_Translations = Nothing End Sub

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  • Formula to follow addition of rows

    - by Wayne McCaslin
    New to VBA, please help. I have a range say A2:D10; input causes rows to be added. New entries are being added using NextRow=_. Works perfectly, however, how do I get the formulas in columns C and D to follow each new row being added. I cannot just format entire column due to my sort criteria. Example formula is =IF(ISTEXT($B11),$C$2-$D11,"")

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  • Invalid cast exception

    - by user127147
    I have a simple application to store address details and edit them. I have been away from VB for a few years now and need to refreash my knowledge while working to a tight deadline. I have a general Sub responsible for displaying a form where user can add contact details (by pressing button add) and edit them (by pressing button edit). This sub is stored in a class Contact. The way it is supposed to work is that there is a list with all the contacts and when new contact is added a new entry is displayed. If user wants to edit given entry he or she selects it and presses edit button Public Sub Display() Dim C As New Contact C.Cont = InputBox("Enter a title for this contact.") C.Fname = frmAddCont.txtFName.Text C.Surname = frmAddCont.txtSName.Text C.Address = frmAddCont.txtAddress.Text frmStart.lstContact.Items.Add(C.Cont.ToString) End Sub I call it from the form responsible for adding new contacts by Dim C As New Contact C.Display() and it works just fine. However when I try to do something similar using the edit button I get errors - "Unable to cast object of type 'System.String' to type 'AddressBook.Contact'." Dim C As Contact If lstContact.SelectedItem IsNot Nothing Then C = lstContact.SelectedItem() C.Display() End If I think it may be something simple however I wasn't able to fix it and given short time I have I decided to ask for help here. I have updated my class with advice from other members and here is the final version (there are some problems however). When I click on the edit button it displays only the input box for the title of the contact and actually adds another entry in the list with previous data for first name, second name etc. Public Class Contact Public Contact As String Public Fname As String Public Surname As String Public Address As String Private myCont As String Public Property Cont() Get Return myCont End Get Set(ByVal value) myCont = Value End Set End Property Public Overrides Function ToString() As String Return Me.Cont End Function Sub NewContact() FName = frmAddCont.txtFName.ToString frmStart.lstContact.Items.Add(FName) frmAddCont.Hide() End Sub Public Sub Display() Dim C As New Contact C.Cont = InputBox("Enter a title for this contact.") C.Fname = frmAddCont.txtFName.Text C.Surname = frmAddCont.txtSName.Text C.Address = frmAddCont.txtAddress.Text 'frmStart.lstContact.Items.Add(C.Cont.ToString) frmStart.lstContact.Items.Add(C) End Sub End Class

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  • Image appearing in the wrong place.

    - by Luke
    I have a list that I want to precede on each line with a small image. The CSS: .left div.arrow{background-image: url(../images/design/box.png); float:left; height:15px; width:15px; margin-right:2px;} .left a.list:link, a:visited, a:active {color:black; font-size:0.8em; text-decoration:none; display:block; float:left;} The HTML: <div class="panel">My quick links</div> <div class="arrow"></div> <a href="/messages.php?p=new" class="list">Send a new message</a> <br /> <div class="arrow"></div> <a href="/settings.php#password" class="list">Change my password</a> <br /> <div class="arrow"></div> <a href="/settings.php#picture" class="list">Upload a new site image</a> <br /> As you can see, each image should go before the writing. On the first line, the text "Send a new message" has the preceeding image. However, each line afterwards has the image at the end. So "Send a new message" has an image at the start and finish. It is like the images are staying at the end of the previous line. Any ideas?

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  • Problem with GwtUpload on GAE

    - by weesilmania
    I'm using GwtUpload to upload images on GAE. The problem is that the images seem to get much bigger when I move them into a blob. I've noticed the same for simple text fields and in that case I've realised that some weirdo characters are being appended to the end of the field values (encoding right?). Can anyone help? public class ImageUploadServlet extends AppEngineUploadAction { /** * Maintain a list with received files and their content types */ Hashtable<String, File> receivedFiles = new Hashtable<String, File>(); Hashtable<String, String> receivedContentTypes = new Hashtable<String, String>(); private Objectify objfy; public ImageUploadServlet() { ObjectifyService.register(Thumbnail.class); objfy = ObjectifyService.begin(); System.out.println("ImageUploadServlet init"); } /** * Override executeAction to save the received files in a custom place and * delete this items from session. */ @Override public String executeAction(HttpServletRequest request, List<FileItem> sessionFiles) throws UploadActionException { Thumbnail t = new Thumbnail(); for (FileItem item : sessionFiles) { //CacheableFileItem item = (CacheableFileItem)fItem; if (false == item.isFormField()) { System.out.println("the name 1st:" + item.getFieldName()); try { // You can also specify the temporary folder InputStream imgStream = item.getInputStream(); Blob imageBlob = new Blob(IOUtils.toByteArray(imgStream)); t.setMainImage(imageBlob); System.out.println("blob: " + t.getMainImage()); } catch (Exception e) { throw new UploadActionException(e.getMessage()); } } else { System.out.println("the name 2nd:" + item.getFieldName()); String name = item.getFieldName(); String value; try { InputStream is = item.getInputStream(); StringWriter writer = new StringWriter(); IOUtils.copy(is, writer,"UTF-8"); value = writer.toString(); writer.close(); System.out.println("parm name: " + name); System.out.println("parm value: " + value + " **" + value.length()); System.out.println(item.getContentType()); if (name.equals("thumb-name")) { t.setName(value); } } catch (IOException e) { // TODO Auto-generated catch block System.out.println("Error"); e.printStackTrace(); } } removeSessionFileItems(request); } objfy.put(t); return null; } As an example the size of the image is 20kb, and the lib has some debugging that confirms that this is the case when it's uploading the file but the blob ends up being over 1 MB. Wes

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  • System.Uri("") in default browser?

    - by Hallgaws
    I am using special program where it loads some url imagine it like window with automatically load www.google.com - program starts and it load the site - BUT when you click on some links in the program window it opens in default browser - how it can be opened in default browser - I am using this code: <Global.Microsoft.VisualBasic.CompilerServices.DesignerGenerated()> _ Partial Class Form1 Inherits System.Windows.Forms.Form <System.Diagnostics.DebuggerNonUserCode()> _ Protected Overrides Sub Dispose(ByVal disposing As Boolean) Try If disposing AndAlso components IsNot Nothing Then components.Dispose() End If Finally MyBase.Dispose(disposing) End Try End Sub Private components As System.ComponentModel.IContainer <System.Diagnostics.DebuggerStepThrough()> _ Private Sub InitializeComponent() Me.components = New System.ComponentModel.Container Dim resources As System.ComponentModel.ComponentResourceManager = New System.ComponentModel.ComponentResourceManager(GetType(Form1)) Me.WB = New System.Windows.Forms.WebBrowser ..... ..... Me.WB.Url = New System.Uri("http://www.google.com/", System.UriKind.Absolute) Using Visual Basic 2008

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  • In .NET, how do I prevent, or handle, tampering with form data of disabled fields before submission?

    - by David
    Hi, If a disabled drop-down list is dynamically rendered to the page, it is still possible to use Firebug, or another tool, to tamper with the submitted value, and to remove the "disabled" HTML attribute. This code: protected override void OnLoad(EventArgs e) { var ddlTest = new DropDownList() {ID="ddlTest", Enabled = false}; ddlTest.Items.AddRange(new [] { new ListItem("Please select", ""), new ListItem("test 1", "1"), new ListItem("test 2", "2") }); Controls.Add(ddlTest); } results in this HTML being rendered: <select disabled="disabled" id="Properties_ddlTest" name="Properties$ddlTest"> <option value="" selected="selected">Please select</option> <option value="1">test 1</option> <option value="2">test 2</option> </select> The problem occurs when I use Firebug to remove the "disabled" attribute, and to change the selected option. On submission of the form, and re-creation of the field, the newly generated control has the correct value by the end of OnLoad, but by OnPreRender, it has assumed the identity of the submitted control and has been given the submitted form value. .NET seems to have no way of detecting the fact that the field was originally created in a disabled state and that the submitted value was faked. This is understandable, as there could be legitimate, client-side functionality that would allow the disabled attribute to be removed. Is there some way, other than a brute force approach, of detecting that this field's value should not have been changed? I see the brute force approach as being something crap, like saving the correct value somewhere while still in OnLoad, and restoring the value in the OnPreRender. As some fields have dependencies on others, that would be unacceptable to me.

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  • Comparing lists of objects and update

    - by user2915962
    I have a view, passing a LIST of Originals to this method. Before the post happened, i changed some of the properties. I now receive the updated list as a parameter in my method and would like to update the database with these new values. [HttpPost] public ActionResult NewValue(Page model) { var ListOfOriginals = Session.Query<Original>().ToList(); //GETS the objects i want to update listOfOriginals = Model.Pages // Model.page is the new list containing the updated values RavenSession.SaveChanges(); return RedirectToAction("Index"); } When i debug, i can see that listOfOriginals gets the new values. The problem is that i dont know how to update the RavenDB whith these new values. I tried adding this: Session.Store(listOfOriginals) before the SaveChanges() but that resulted in an error. Maybe there is a much better way of doing this?

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  • Add a child inside a newly created instance, inside of a loop in AS3

    - by HeroicNate
    I am trying to create a gallery where each thumb is housed inside of it's own movie clip that will have more data, but it keeps failing because it won't let me refer to the newly created instance of the movie clip. Below is what I am trying to do. var xml:XML; var xmlReq:URLRequest = new URLRequest("xml.xml"); var xmlLoader:URLLoader = new URLLoader(); var imageLoader:Loader; var vidThumbn:ThumbNail; var next_y:Number = 0; for(var i:int = 0; i < xml.downloads.videos.video.length(); i++) { vidThumbn = new ThumbNail(); imageLoader = new Loader(); imageLoader.load(new URLRequest(xml.downloads.videos.video[i].ThumbnailImage)); vidThumbn.y = next_y; vidThumbn.x = 0; next_y += 117; imageLoader.name = xml.downloads.videos.video[i].Files[0].File.URL; videoBox.thumbList.thumbListHolder.addChild(vidThumbn); videoBox.thumbList.thumbListHolder.vidThumbn.addChild(imageLoader); } It dies every time on that last line. How do I refer to that vidThumbn instance so I can add the imageLoader? I don't know what I'm missing. It feels like it should work.

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  • How to modify PropertyGrid at runtime (add/remove property and dynamic types/enums)

    - by salle55
    How do you modify a propertygrid at runtime in every way? I want to be able to add and remove properties and add "dynamic types", what I mean with that is a type that result in a runtime generated dropdown in the propertygrid using a TypeConverter. I have actually been able to do both those things (add/remove properties and add dynamic type) but only separately not at the same time. To implement the support to add and remove properties at runtime I used this codeproject article and modified the code a bit to support different types (not just strings). private System.Windows.Forms.PropertyGrid propertyGrid1; private CustomClass myProperties = new CustomClass(); public Form1() { InitializeComponent(); myProperties.Add(new CustomProperty("Name", "Sven", typeof(string), false, true)); myProperties.Add(new CustomProperty("MyBool", "True", typeof(bool), false, true)); myProperties.Add(new CustomProperty("CaptionPosition", "Top", typeof(CaptionPosition), false, true)); myProperties.Add(new CustomProperty("Custom", "", typeof(StatesList), false, true)); //<-- doesn't work } /// <summary> /// CustomClass (Which is binding to property grid) /// </summary> public class CustomClass: CollectionBase,ICustomTypeDescriptor { /// <summary> /// Add CustomProperty to Collectionbase List /// </summary> /// <param name="Value"></param> public void Add(CustomProperty Value) { base.List.Add(Value); } /// <summary> /// Remove item from List /// </summary> /// <param name="Name"></param> public void Remove(string Name) { foreach(CustomProperty prop in base.List) { if(prop.Name == Name) { base.List.Remove(prop); return; } } } etc... public enum CaptionPosition { Top, Left } My complete solution can be downloaded here. It works fine when I add strings, bools or enums, but when I try to add a "dynamic type" like StatesList it doesn't work. Does anyone know why and can help me to solve it? public class StatesList : System.ComponentModel.StringConverter { private string[] _States = { "Alabama", "Alaska", "Arizona", "Arkansas" }; public override System.ComponentModel.TypeConverter.StandardValuesCollection GetStandardValues(ITypeDescriptorContext context) { return new StandardValuesCollection(_States); } public override bool GetStandardValuesSupported(ITypeDescriptorContext context) { return true; } public override bool GetStandardValuesExclusive(ITypeDescriptorContext context) { return true; } } The method of using a TypeConverter works fine when you don't try to add the property at runtime, for example this code works without any problem, but I want to be able to do both. Please take a look at my project. Thanks!

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  • overwrite a file which is already used by another process

    - by Ahmy
    I have a web site and i am showing videos to visitors, at the admin side i am filling the form of video and upload video file and sometimes i need to change(update) the video so i update the video by uploading another one, when i create the video in the first time i concatenate a datetime variable with the video name to avoid repeatition(file already exist) and when updatting the video the problem appears.... as if i upload the new video with the previous name so it will replace the previous one and in this case if the video is used by another process it will fail and the second option(which i am already using) is to upload a new video and concatenating new datetime variable with video title, so the previous and the new video will exist in the same directory and in this case i will lose too much space in my server directory as i have unused videos which takes space which in future will cause problem to me in the disk space so how can i solve this problem ? Hope that my question is clear....thanks in advance for any try

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