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  • UITextField resignFirstResponder not working?

    - by Tejaswi Yerukalapudi
    I've double checked all the connections in the nib file. My code - // Implement viewDidLoad to do additional setup after loading the view, typically from a nib. - (void)viewDidLoad { self.view.backgroundColor = [[UIColor alloc] initWithPatternImage:[UIImage imageNamed:@"iphone_bg_login.png"]]; self.title = @"Login screen"; loginTxt = [[UITextField alloc] init]; pwdText = [[UITextField alloc] init]; loginFailedTxt = [[UILabel alloc] init]; loginBtn = [[UIButton alloc] init]; navAppDelegate = (NavAppDelegate *)[[UIApplication sharedApplication] delegate]; navAppDelegate.navController.navigationBarHidden = YES; //NSArray *subVs = (NSArray *) [self.view subviews]; [super viewDidLoad]; } I've used a subclass of UIView (UIControl) and added all the UI elements to it in the Interface builder.The UIControl's touchDown method is connected to backgroundTap method. -(IBAction) backgroundTap:(id) sender { [loginTxt resignFirstResponder]; [pwdText resignFirstResponder]; //[[UIApplication sharedApplication] becomeFirstResponder]; //[sender resignFirstResponder]; } So the keyboard isn't removed like it's supposed to. Not sure why. Thanks for the help! Teja.

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  • Deselect dates in Web Calendar c#

    - by yomismo
    Hello, I'm trying to select and de-select dates on a C# Web Calendar control. The problem I have is that I can select or deselect dates except when there is only a single date selected. Clicking on it does not trigger the selection changed event, so Ineed to do something on the dayrender event but I'm not sure what or how. Any ideas? TIA Code so far: public static List<DateTime> list = new List<DateTime>(); protected void Calendar1_DayRender(object sender, DayRenderEventArgs e) { if (e.Day.IsSelected == true) { list.Add(e.Day.Date); } Session["SelectedDates"] = list; } protected void Calendar1_SelectionChanged(object sender, EventArgs e) { DateTime selection = Calendar1.SelectedDate; if (Session["SelectedDates"] != null) { List<DateTime> newList = (List<DateTime>)Session["SelectedDates"]; foreach (DateTime dt in newList) { Calendar1.SelectedDates.Add(dt); } if (searchdate(selection, newList)) { Calendar1.SelectedDates.Remove(selection); } list.Clear(); } } public bool searchdate(DateTime date, List<DateTime> dates) { var query = from o in dates where o.Date == date select o; if (query.ToList().Count == 0) { return false; } else { return true; } }

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  • Wpf binding to a function

    - by carlopenid
    I've a created a simple scrollviewer (pnlDayScroller) and want to have a separate horizontal scrollbar (associated scroller) to do the horizontal scrolling. All works with the below code accept I need to bind the visibility of the associated scroller. I can't simply bind this to the visibility property of the horizontal template part of the scroll viewer as I've set this to be always hidden. The only way I can think to do this is to bind the visibility of the associated scroller to a function such that If associatedScroller.scrollableWidth > 0 then associatedScroller.visibility = visibility.visible else associatedScroller.visibility = visibility.collapsed end if Is this possible to do and if so how do I do it? Private Sub pnlDayScroller_Loaded(ByVal sender As System.Object, ByVal e As System.Windows.RoutedEventArgs) Handles pnlDayScroller.Loaded Dim binViewport, binMax, binMin, binSChange, binLChange As Binding Dim horizontalScrollBar As Primitives.ScrollBar = CType(pnlDayScroller.Template.FindName("PART_HorizontalScrollBar", pnlDayScroller), Primitives.ScrollBar) binViewport = New Binding("ViewportSize") binViewport.Mode = BindingMode.OneWay binViewport.Source = horizontalScrollBar associatedScroller.SetBinding(Primitives.ScrollBar.ViewportSizeProperty, binViewport) binMax = New Binding("Maximum") binMax.Mode = BindingMode.OneWay binMax.Source = horizontalScrollBar associatedScroller.SetBinding(Primitives.ScrollBar.MaximumProperty, binMax) binMin = New Binding("Minimum") binMin.Mode = BindingMode.OneWay binMin.Source = horizontalScrollBar associatedScroller.SetBinding(Primitives.ScrollBar.MinimumProperty, binMin) binSChange = New Binding("SmallChange") binSChange.Mode = BindingMode.OneWay binSChange.Source = horizontalScrollBar associatedScroller.SetBinding(Primitives.ScrollBar.SmallChangeProperty, binSChange) binLChange = New Binding("LargeChange") binLChange.Mode = BindingMode.OneWay binLChange.Source = horizontalScrollBar associatedScroller.SetBinding(Primitives.ScrollBar.LargeChangeProperty, binLChange) End Sub Private Sub associatedScroller_Scroll(ByVal sender As System.Object, ByVal e As System.Windows.RoutedPropertyChangedEventArgs(Of Double)) Handles associatedScroller.ValueChanged pnlDayScroller.ScrollToHorizontalOffset(e.NewValue) end sub FOLLOW UP (thanks to JustABill) : I've add this code into the pnlDayScroller sub above (I've discovered scrollableWidth is a property of scrollviewer not scrollbar, but the maximum property gives a result I can use instead) binVisibility = New Binding("Maximum") binVisibility.Mode = BindingMode.OneWay binVisibility.Source = horizontalScrollBar binVisibility.Converter = New ScrollableConverter associatedScroller.SetBinding(Primitives.ScrollBar.VisibilityProperty, binVisibility) and I've created this class Public Class ScrollableConverter Implements IValueConverter Public Function Convert(ByVal value As Object, ByVal targetType As Type, ByVal parameter As Object, ByVal culture As System.Globalization.CultureInfo) As Object Implements IValueConverter.Convert Dim dblMaximum As Double If targetType IsNot GetType(Visibility) Then Throw New InvalidOperationException("The target must be a visibility") Else dblMaximum = CType(value, Double) Debug.WriteLine("Value of double is " & dblMaximum) If dblMaximum > 0 Then Return Visibility.Visible Else Return Visibility.Collapsed End If End If End Function Public Function ConvertBack(ByVal value As Object, ByVal targetType As Type, ByVal parameter As Object, ByVal culture As System.Globalization.CultureInfo) As Object Implements IValueConverter.ConvertBack Throw New NotSupportedException() End Function End Class And the problem is resolved.

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  • C# BindingSource.AddingNew is never called?

    - by msfanboy
    Hello, BindingSource.AddingNew is never called when I leave the cell of my datagrid. The DataGrid has as datasource the BindingSource which again has a "List" of "Customer". What does the BindingSource need to create a new Customer object and add it to the underlying ICustomerList ? Of course a interface has no constructor... Thats the Exception I get: System.MissingMethodException: The constcructor for the type "SAT.EnCoDe.Administration.ICustomer" was not found. bei System.RuntimeType.CreateInstanceImpl(BindingFlags bindingAttr, Binder binder, Object[] args, CultureInfo culture, Object[] activationAttributes) bei System.SecurityUtils.SecureCreateInstance(Type type, Object[] args) bei System.ComponentModel.BindingList1.AddNewCore() bei System.ComponentModel.BindingList1.System.ComponentModel.IBindingList.AddNew() bei System.Windows.Forms.BindingSource.AddNew() bei System.Windows.Forms.CurrencyManager.AddNew() bei DevExpress.Data.CurrencyDataController.OnCurrencyManagerAddNew() bei DevExpress.Data.CurrencyDataController.AddNewRow() bei DevExpress.XtraGrid.Views.Grid.GridView.OnActiveEditor_ValueModified(Object sender, EventArgs e) bei DevExpress.XtraEditors.Repository.RepositoryItem.RaiseModified(EventArgs e) bei DevExpress.XtraEditors.BaseEdit.OnEditValueChanging(ChangingEventArgs e) bei DevExpress.XtraEditors.TextEdit.OnMaskBox_ValueChanged(Object sender, EventArgs e) bei DevExpress.XtraEditors.Mask.MaskBox.RaiseEditTextChanged() bei System.Windows.Forms.TextBoxBase.WmReflectCommand(Message& m) bei DevExpress.XtraEditors.Mask.MaskBox.BaseWndProc(Message& m) bei DevExpress.XtraEditors.Mask.MaskBox.WndProc(Message& m) bei DevExpress.XtraEditors.TextBoxMaskBox.WndProc(Message& msg) bei System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m) bei System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)

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  • Hidden/Shown AsyncFileUpload Control Doesn't Fire Server-Side UploadedComplete Event

    - by Bob Mc
    I recently came across the AsyncFileUpload control in the latest (3.0.40412) release of the ASP.Net Ajax Control Toolkit. There appears to be an issue when using it in a hidden control that is later revealed, such as a <div> tag with visible=false. Example: Page code - <%@ Register Assembly="AjaxControlToolkit" Namespace="AjaxControlToolkit" TagPrefix="act" %> . . . <act:ToolkitScriptManager runat="server" ID="ScriptManager1" /> <asp:UpdatePanel runat="server" ID="upnlFileUpload"> <ContentTemplate> <asp:Button runat="server" ID="btnShowUpload" Text="Show Upload" /> <div runat="server" id="divUpload" visible="false"> <act:AsyncFileUpload runat="server" id="ctlFileUpload" /> </div> </ContentTemplate> </asp:UpdatePanel> Server-side Code - Protected Sub ctlFileUpload_UploadedComplete(ByVal sender As Object, ByVal e As AjaxControlToolkit.AsyncFileUploadEventArgs) Handles ctlFileUpload.UploadedComplete End Sub Protected Sub btnShowUpload_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles btnShowUpload.Click divUpload.Visible = True End Sub I have a breakpoint on the UploadedComplete event but it never fires. However, if you take the AsyncFileUpload control out of the <div>, making it visible at initial page render, the control works as expected. So, is this a bug within the AsynchUploadControl, or am I not grasping a fundamental concept (which happens regularly)?

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  • How to get record value from LinqDataSource via Code Behind

    - by rockinthesixstring
    I've got a LinqDataSource that retrieves a single record. Protected Sub LinqDataSource1_Selecting(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.LinqDataSourceSelectEventArgs) Handles LinqDataSource1.Selecting Dim BizForSaleDC As New DAL.BizForSaleDataContext e.Result = BizForSaleDC.bt_BizForSale_GetByID(e.WhereParameters("ID")).FirstOrDefault End Sub I'd like to be able to retrieve the values of said DataSource using the Page_Load function. Protected Sub Page_Load(ByVal sender As Object, ByVal e As EventArgs) Handles Me.Load 'Get the right usercontrol' Dim ctrl As UserControl Select Case DataBinder.Eval(LINQDATASOURCE_SOMETHING.DataItem, "AdType") Case 1 : ctrl = DirectCast(Me.FindControl("Default1"), UserControl) Case 2 : ctrl = DirectCast(Me.FindControl("Default1"), UserControl) Case 3 : ctrl = DirectCast(Me.FindControl("ValuPro1"), UserControl) Case 4 : ctrl = DirectCast(Me.FindControl("ValuPro1"), UserControl) Case Else : ctrl = Nothing End Select 'set the control to visible' ctrl.Visible = True End Sub But obviously the code above doesn't work... I'm just wondering if there's a way to make it work. Here is the full markup <body> <form id="form1" runat="server"> <asp:LinqDataSource ID="LinqDataSource1" runat="server"> <WhereParameters> <asp:QueryStringParameter ConvertEmptyStringToNull="true" Name="ID" QueryStringField="ID" Type="Int32" /> </WhereParameters> </asp:LinqDataSource> <uc:Default ID="Default1" runat="server" Visible="false" /> <uc:ValuPro ID="ValuPro1" runat="server" Visible="false" /> </form> </body> </html> Basically what happens is the appropriate usercontrol is enabled and that usercontrol inherits the LinqDataSource and displays the appropriate information. EDIT: It's working now with the code below, however, since I'm really not into hitting the database multiple times for the same info, I'd prefer to get the value from the DataSource. 'Query the database' Dim _ID As Integer = Convert.ToInt32(Request.QueryString("ID")) Dim BizForSaleDC As New BizForSaleDataContext Dim results = BizForSaleDC.bt_BizForSale_GetByID(_ID).FirstOrDefault 'Get the right usercontrol' Dim ctrl As UserControl Select Case results.AdType Case 1 : ctrl = DirectCast(Me.FindControl("Default1"), UserControl) Case 2 : ctrl = DirectCast(Me.FindControl("Default1"), UserControl) Case 3 : ctrl = DirectCast(Me.FindControl("ValuPro1"), UserControl) Case 4 : ctrl = DirectCast(Me.FindControl("ValuPro1"), UserControl) Case Else : ctrl = Nothing End Select

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  • Weird - "The EntityReference object could not be serialized" when serializing from an ASP.NET Web Si

    - by Mikey Cee
    I have an Entity Framework data model. Part of the model is a Customer entity. The web service provides a method to get a customer, and to receive an updated version of this customer to be persisted. To test this, I created a new ASP.NET web Application, (Solution Add New Project ASP.NET Web Application), then added a reference to my service reference using the standard Add Service Reference dialog. I then call the service using the following code: var client = new CustomerServiceClient(); var customer = client.GetCustomerByID(18); // get it customer.LimitDown = 100; // change it client.SaveCustomer(customer); // persist it Everything works as expected. Now, I do exactly the same thing, but this time with as ASP.NET Web Site (Solution Add New Web Site ASP.NET Web Site). I add the reference in a similar fashion and copy and paste the code above into the new site. But now I get the following exception thrown on the 4th line: System.InvalidOperationException The EntityReference object could not be serialized. This type of object cannot be serialized when the RelationshipManager belongs to an entity object that does not implement IEntityWithRelationships. Source Error: Line 2474: Line 2475: public SkyWalkerCustomerService.OperationResult SaveCustomer(SkyWalkerCustomerService.Customer customer) { Line 2476: return base.Channel.SaveCustomer(customer); Line 2477: } Line 2478: } Stack Trace: System.Runtime.Remoting.Proxies.RealProxy.HandleReturnMessage(IMessage reqMsg, IMessage retMsg) +9475203 System.Runtime.Remoting.Proxies.RealProxy.PrivateInvoke(MessageData& msgData, Int32 type) +345 SkyWalkerCustomerService.ICustomerService.SaveCustomer(Customer customer) +0 SkyWalkerCustomerService.CustomerServiceClient.SaveCustomer(Customer customer) in c:\Windows\Microsoft.NET\Framework\v4.0.30128\Temporary ASP.NET Files\testsite2\dd2bcf8d\f95604ff\App_WebReferences.fz4h7x7l.0.cs:2476 _Default.Page_Load(Object sender, EventArgs e) in c:\Users\Mike\Documents\Repositories\UWC\SkyWalker\TestSite2\Default.aspx.cs:17 System.Web.Util.CalliHelper.EventArgFunctionCaller(IntPtr fp, Object o, Object t, EventArgs e) +14 System.Web.Util.CalliEventHandlerDelegateProxy.Callback(Object sender, EventArgs e) +35 System.Web.UI.Control.OnLoad(EventArgs e) +91 System.Web.UI.Control.LoadRecursive() +61 System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +1966 Googling for this error returns very little. Why doesn't this work?

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  • Why are my labels not updating in my update panel in ASP.NET?

    - by CowKingDeluxe
    I have a label in my update panel that I want to update its text on after a successful asynchronus file upload. Here's my markup: <asp:UpdatePanel ID="UpdatePanel1" runat="server"><ContentTemplate> Step 1 (<asp:Label ID="label_fileupload" runat="server" />): <br /> <ajaxToolkit:AsyncFileUpload ID="AsyncFileUpload1" Width="200px" runat="server" CompleteBackColor="Lime" UploaderStyle="Modern" ErrorBackColor="Red" ThrobberID="Throbber" UploadingBackColor="#66CCFF" OnClientUploadStarted="StartUpload" /> <asp:Label ID="Throbber" runat="server" Style="display: none"><img src="/images/indicator.gif" alt="loading" /></asp:Label> <br /> <asp:Label ID="statuslabel" runat="server" Text="Label"></asp:Label> </ContentTemplate></asp:UpdatePanel> Here is my code-behind: Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load If (IsPostBack) Then Else label_fileupload.Text = "Incomplete" label_fileupload.CssClass = "uploadincomplete" statuslabel.Text = "NOT DONE" End If End Sub Public Sub AsyncFileUpload1_UploadedComplete1(ByVal sender As Object, ByVal e As AjaxControlToolkit.AsyncFileUploadEventArgs) Handles AsyncFileUpload1.UploadedComplete System.Threading.Thread.Sleep(1000) If (AsyncFileUpload1.HasFile) Then Dim strPath As String = MapPath("/images/White.png") AsyncFileUpload1.SaveAs(strPath) End If label_fileupload.Text = "Complete" label_fileupload.CssClass = "uploadcomplete" statuslabel.Text = "DONE" End Sub When I set the labels to update via a button click, they work. But when I set them to update via the Upload complete event, they don't work. Is there some way around this to get the labels to update their text / css class from the UploadedComplete event of an asynchronous file upload control?

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  • TextBox, Button and ListBox in a ListBox

    - by Emil C
    I have a listbox with a bunch of contols in each list item. <ListBox x:Name="projectList" IsSynchronizedWithCurrentItem="True"> <ListBox.ItemTemplate> <DataTemplate> <StackPanel> <TextBlock Text="{Binding Name}" /> <ListBox x:Name="taskList" ItemsSource="{Binding Tasks}"> <ListBox.ItemTemplate> <DataTemplate> <StackPanel> <TextBlock Text="{Binding Name}" /> </StackPanel> </DataTemplate> </ListBox.ItemTemplate> </ListBox> <TextBox x:Name="textBoxTask" /> <Button x:Name="ButtonAddNewTask" Content="Test" CommandParameter="{Binding RelativeSource={RelativeSource TemplatedParent}, Path=DataContext}" Click="ButtonAddNewTask_Click" /> </StackPanel> </DataTemplate> </ListBox.ItemTemplate> </ListBox> When I click on the button in the listbox i want to add a new item to the listbox within the listbox. I've come this far. So my question is how do I get hold of the textbox and how do I update the listbox? Here is my click event private void ButtonAddNewTask_Click(object sender, RoutedEventArgs e) { Button button = (Button)sender; Project proj = button.DataContext as Project; if(proj.Tasks == null) proj.Tasks = new List<Task>(); proj.Tasks.Add(new Task("Added Task")); } Thanx

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  • WPF - How to bind a DataGridTemplateColumn

    - by Andy T
    Hi, I am trying to get the name of the property associated with a particular DataGridColumn, so that I can then do some stuff based on that. This function is called when the user clicks context menu item on the column's header... This is fine for the out-of-the-box ready-rolled column types like DataGridTextColumn, since they are bound, but the problem is that some of my columns are DataGridTemplateColumns, which are not bound. private void GroupByField_Click (object sender, RoutedEventArgs e){ MenuItem mi = (MenuItem)sender; ContextMenu cm = (ContextMenu) mi.Parent; DataGridColumnHeader dgch = (DataGridColumnHeader) cm.PlacementTarget; DataGridBoundColumn dgbc = (DataGridBoundColumn) dgch.Column; Binding binding = (Binding) dgbc.Binding; string BoundPropName = binding.Path.Path; //Do stuff based on bound property name here... } So, take for example my 'Name' column... it's a DataGridTemplateColumn (since it has an image and some other stuff in there). Therefore, it is not actually bound to the 'Name' property... but I would like to be, so that the above code will work. My question is two-part, really: 1) Is it possible to make a DataGridTemplateColumn be BOUND, so that the above code would work? Can I bind it somehow to a property? 2) Or do I need to something entirely different, and change the code above? Thanks in advance! AT

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  • How do I point a ListFieldIterator to a subweb when ControlMode = Display?

    - by Rich Bennema
    I have a custom page with the following ListFieldIterator: <SharePoint:ListFieldIterator runat="server" ControlMode="Display" OnInit="listFieldIterator_Init" /> Here is the Init event: protected void listFieldIterator_Init(object sender, EventArgs e) { ListFieldIterator listFieldIterator = sender as ListFieldIterator; SPContext current = SPContext.Current; SPFieldUrlValue value = new SPFieldUrlValue(current.ListItem[SPBuiltInFieldId.URL].ToString()); Uri uri = new Uri(value.Url); using (SPWeb web = current.Site.OpenWeb(uri.AbsolutePath)) { SPListItem item = web.GetListItem(uri.PathAndQuery); if (null != item) { listFieldIterator.ItemContext = SPContext.GetContext(this.Context, item.ID, item.ParentList.ID, web); } } } Everything works great if the target List Item is in the same site as the page. But once it points to a different site, all the fields appear, but the values all appear in the following format: Failed to render "Title" column because of an error in the "Single line of text" field type control. See details in log. Exception message: List does not exist The page you selected contains a list that does not exist. It may have been deleted by another user.. If I change the ControlMode to Edit, the values are displayed correctly. So how do I get it to work while in Display mode?

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  • not enough actual parameters ?

    - by omair iqbal
    The following program returns error : e2035 not enough actual parameters in 2 places (lines 39 and 45) and is not compiling. Can someone please help me out? Can I put 0 or null in place of parameters here? unit Unit1; interface uses Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms, Dialogs,ComObj,shdocvw,activex, StdCtrls; type TForm1 = class(TForm) Button1: TButton; procedure Button1Click(Sender: TObject); private { Private declarations } public { Public declarations } end; var Form1: TForm1; implementation {$R *.dfm} procedure TForm1.Button1Click(Sender: TObject); var mybrowser : iwebbrowser2; myUserName, myPassword,loginURL : string; Flags: OleVariant; begin Flags := navOpenInNewWindow; MyBrowser := CreateOleObject('InternetExplorer.Application') as IWebBrowser2; MyBrowser.Navigate('http://www.gmail.com',flags,'_blank'); myUserName := 'UserName'; myPassword := 'password'; loginURL:='javascript:var Email = document.getElementById(''Email'');Email.value=''' + myUserName + ''';var Password = document.getElementById(''Passwd'');Password.value=''' + myPassword + ''';var SignIn = document.getElementById(''signIn'');SignIn.click();'; MyBrowser.Navigate(loginURL); end; end.

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  • Connecting to Oracle 10g from .NET

    - by Xinus
    I am trying to connect to oracle server located at some IP address but always get error as System.TypeInitializationException: The type initializer for 'Oracle.DataAccess.Client.OracleConnection' threw an exception. --- Oracle.DataAccess.Client.OracleException The provider is not compatible with the version of Oracle client at Oracle.DataAccess.Client.OracleInit.Initialize() at Oracle.DataAccess.Client.OracleConnection..cctor() --- End of inner exception stack trace --- at Oracle.DataAccess.Client.OracleConnection..ctor(String connectionString) at WebApplication1._Default.Page_Load(Object sender, EventArgs e) in C:\Users\Sunil\Documents\Visual Studio 2008\Projects\WebApplication1\WebApplication1\Default.aspx.cs:line 26 Here is a test file using System; using System.Collections; using System.Configuration; using System.Data; using System.Linq; using System.Web; using System.Web.Security; using System.Web.UI; using System.Web.UI.HtmlControls; using System.Web.UI.WebControls; using System.Web.UI.WebControls.WebParts; using System.Xml.Linq; using Oracle.DataAccess.Client; namespace WebApplication1 { public partial class _Default : System.Web.UI.Page { protected void Page_Load(object sender, EventArgs e) { try { string oradb = "Data Source=(DESCRIPTION=(ADDRESS_LIST=" + "(ADDRESS=(PROTOCOL=TCP)(HOST=192.168.1.11)(PORT=1523)))" + "(CONNECT_DATA=(SERVER=DEDICATED)(SERVICE_NAME=ORCL)));" + "User Id=<user id>;Password=<some password>;"; OracleConnection conn = new OracleConnection(oradb); // C# conn.Open(); } catch (Exception ex){ Label1.Text = ex.ToString(); } } } } I have installed 10gR2 client and oracle 10gR2 provider for ASP.NET. Am I missing anything ?

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  • How do you handle 'SelectedItemChanged' events in a MVVM ViewModel?

    - by Travis
    I have some logic that depends upon two properties being set, as it executes when both properties have a value. For example: private void DoCalc() { if (string.IsNullOrEmpty(Property1) || string.IsNullOrEmpty(Property2)) return; Property3 = Property1 + " " + Property2; } That code would need to be executed every time Property1 or Property2 changed, but I'm having trouble figuring out how to do it in a stylistically acceptable manner. Here are the choices as I see them: 1) Call method from ViewModel I don't have a problem with this conceptually, as the logic is still in the ViewModel - I'm not a 'No code-behind' nazi. However, the 'trigger' logic (when either property changes) is still in the UI layer, which I don't love. The codebehind would look like this: void ComboBox_Property1_SelectedItemChanged(object sender, RoutedEventArgs e) { viewModel.DoCalc(); } 2) Call method from Property Setter This approach seems the most 'pure', but it also seems ugly, as if the logic is hidden. It would look like this: public string Property1 { get {return property1;} set { if (property1 != value) { property1 = value; NotifyPropertyChanged("Property1"); DoCalc(); } } } 3) Hook into the PropertyChanged event I'm now thinking this might be the right approach, but it feels weird to hook into the property changed event in the implementing viewmodel. It would look something like this: public ViewModel() { this.PropertyChanged += new PropertyChangedEventHandler(ViewModel_PropertyChanged); } void ViewModel_PropertyChanged(object sender, PropertyChangedEventArgs e) { if (e.PropertyName == "Property1" || e.PropertyName == "Property2") { DoCalc(); } } So, my question is, if you were browsing through some source code with that requirement, which approach would you prefer to see implemented (and why?). Thanks for any input.

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  • Microsoft JScript runtime error: 'ShowDatePicker' is undefined

    - by dbobrow
    Working around an issue where my jquery datepicker does not display after postback within an update panel. The textbox (trigger) for the calendar is contained within a control, which is contained within an update panel. I found an article assisting with this issue, and it informed me to do the following Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load Dim tScript As String = "$(function(){ Sys.WebForms.PageRequestManager.getInstance().add_endRequest(ShowDatePicker); });" Page.ClientScript.RegisterStartupScript(Me.GetType(), "async_" & Me.txtAquisition.ClientID, tScript, True) Then on the ascx I have <script type="text/javascript"> function showDatePicker(sender, args) { var control = document.getElementById("<%=txtAquisition.ClientID %>") alert(control); $(control).each(function() { $(this).datepicker({ showOn: 'focus' }); }); } </script> but am getting an undefined error. Am I approaching this in the correct manner? Any other suggestions to ensure my datepicker remains usable within the update panel? Thinking this may be due to the fact that I have the controls nested within an update panel... several of them in fact. Any help on this is greatly appreciated.

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  • Crystal report error message

    - by Selom
    Hi, ive been dealing with a kind of no error message my application is throwing after the setup has been installed on my machine. The application run fine and generate a report exactly the way i want it. The problem is that after compiling it as set up, it throw this message: System.Runtime.InteropServices.COMException (0x80000000); No error. at CrystalDesisionsReportAppServer.Controllers.DatabaseControllerClass.ReplaceConnection(Object oldConnection, Object newConnection, Object parameterFields, Object crDBOptionUseDefault) at CrystalDecisions.CrystalReports.Engine.ReportDocument.SetDataSourceInternal(Object val, Type type) at CrystalDecisions.CrystalReports.Engine.ReportDocument.SetDataSource(DataSet dataSet) at Presby_Soft.reportFrm.reportFrm_Load(Object sender, EventArgs e) this is the code im using: Private Sub reportFrm_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load If conn.State = ConnectionState.Closed Then conn.Open() End If Try Dim rpt As New CrystalReport1() Dim da As New SQLiteDataAdapter Dim ds As New presbydbDataSet 'Dim cmd As New SQLiteCommand("SELECT personal_details.fn, training.training_level FROM personal_details INNER JOIN training ON personal_details.Staff_ID ='" + detailsFrm.Label13.Text + "'", conn) Dim cmd As New SQLiteCommand("SELECT * FROM personal_details WHERE personal_details.staff_ID='" + detailsFrm.Label13.Text + "'", conn) cmd.ExecuteNonQuery() da.SelectCommand = cmd da.Fill(ds, "personal_details") rpt.Subreports.Item("persoRpt").SetDataSource(ds) CrystalReportViewer1.ReportSource = rpt Catch ex As Exception MsgBox(ex.ToString) End Try conn.Close() End Sub Please help, I really don't know how to go about this problem. Thanks for answering

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  • How to keep track of TextPointer in WPF RichTextBox?

    - by Alan Spark
    I'm trying to get my head around the TextPointer class in a WPF RichTextBox. I would like to be able to keep track of them so that I can associate information with areas in the text. I am currently working with a very simple example to try and figure out what is going on. In the PreviewKeyDown event I am storing the caret position and then in the PreviewKeyUp event I am creating a TextRange based on the before and after caret positions. Here is a code sample that illustrates what I am trying to do: // The caret position before typing private TextPointer caretBefore = null; private void rtbTest_PreviewKeyDown(object sender, KeyEventArgs e) { // Store caret position caretBefore = rtbTest.CaretPosition; } private void rtbTest_PreviewKeyUp(object sender, KeyEventArgs e) { // Get text between before and after caret positions TextRange tr = new TextRange(caretBefore, rtbTest.CaretPosition); MessageBox.Show(tr.Text); } The problem is that the text that I get is blank. For example, if I type the character 'a' then I would expect to find the text "a" in the TextRange. Does anyone know what is going wrong? It could be something very simple but I've spent an afternoon getting nowhere. I am trying to embrace the new WPF technology but find that the RichTextBox in particular is so complicated that it makes even doing simple things like this difficult. If anyone has any links that do a good job of explaining the TextPointer, I would appreciate it if you can let me know.

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  • MVVM Madness: Commands

    - by JP
    I like MVVM. I don't love it, but like it. Most of it makes sense. But, I keep reading articles that encourage you to write a lot of code so that you can write XAML and don't have to write any code in the code-behind. Let me give you an example. Recently I wanted to hookup a command in my ViewModel to a ListView MouseDoubleClickEvent. I wasn't quite sure how to do this. Fortunately, Google has answers for everything. I found the following articles: http://blog.functionalfun.net/2008/09/hooking-up-commands-to-events-in-wpf.html http://joyfulwpf.blogspot.com/2009/05/mvvm-invoking-command-on-attached-event.html http://sachabarber.net/?p=514 http://geekswithblogs.net/HouseOfBilz/archive/2009/08/27/adventures-in-mvvm-ndash-binding-commands-to-any-event.aspx http://marlongrech.wordpress.com/2008/12/13/attachedcommandbehavior-v2-aka-acb/ While the solutions were helpful in my understanding of commands, there were problems. Some of the aforementioned solutions rendered the WPF designer unusable because of a common hack of appending "Internal" after a dependency property; the WPF designer can't find it, but the CLR can. Some of the solutions didn't allow multiple commands to the same control. Some of the solutions didn't allow parameters. After experimenting for a few hours I just decided to do this: private void ListView_MouseDoubleClick(object sender, MouseButtonEventArgs e) { ListView lv = sender as ListView; MyViewModel vm = this.DataContext as MyViewModel; vm.DoSomethingCommand.Execute(lv.SelectedItem); } So, MVVM purists, please tell me what's wrong with this? I can still Unit test my command. This seems very practical, but seems to violate the guideline of "ZOMG... you have code in your code-behind!!!!" Please share your thoughts. Thanks in advance.

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  • Understanding ItemsSource and DataContext in a DataGrid

    - by Ben McCormack
    I'm trying to understand how the ItemsSource and DataContext properties work in a Silverlight Toolkit DataGrid. I'm currently working with dummy data and trying to get the data in the DataGrid to update when the value of a combo box changes. My MainPage.xaml.vb file currently looks like this: Partial Public Class MainPage Inherits UserControl Private IssueSummaryList As List(Of IssueSummary) Public Sub New() GetDummyIssueSummary("Day") InitializeComponent() dgIssueSummary.ItemsSource = IssueSummaryList 'dgIssueSummary.DataContext = IssueSummaryList ' End Sub Private Sub GetDummyIssueSummary(ByVal timeInterval As String) Dim lst As New List(Of IssueSummary)() 'Generate dummy data for lst ' IssueSummaryList = lst End Sub Private Sub ComboBox_SelectionChanged(ByVal sender As System.Object, ByVal e As System.Windows.Controls.SelectionChangedEventArgs) Dim cboBox As ComboBox = CType(sender, ComboBox) Dim cboBoxItem As ComboBoxItem = CType(cboBox.SelectedValue, ComboBoxItem) GetDummyIssueSummary(cboBoxItem.Content.ToString()) End Sub End Class My XAML currently looks this for the DataGrid: <sdk:DataGrid x:Name="dgIssueSummary" AutoGenerateColumns="False" > <sdk:DataGrid.Columns> <sdk:DataGridTextColumn Binding="{Binding ProblemType}" Header="Problem Type"/> <sdk:DataGridTextColumn Binding="{Binding Count}" Header="Count"/> </sdk:DataGrid.Columns> </sdk:DataGrid> The problem is that if I set the value of the ItemsSource property of the data grid equal to IssueSummaryList, it will display the data when it loads, but it won't update when the underlying IssueSummaryList collection changes. If I set the DataContext of the grid to be IssueSummaryList, no data will be displayed when it renders. I must not understand how ItemsSource and DataContext are supposed to function, because I expect one of those properties to "just work" when I assign a List object to them. What do I need to understand and change in my code so that as data changes in the List, the data in the grid is updated?

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  • RadAjaxManager - how Exclude Ajaxifing -- UPDATED -- Controls?????

    - by LostLord
    hi my dear friends : my ASPX code is like this : <%@ Page Language="C#" AutoEventWireup="true" CodeBehind="AjaxManager.aspx.cs" Inherits="WebApplication1.AjaxManager" %> <%@ Register Assembly="Telerik.Web.UI" Namespace="Telerik.Web.UI" TagPrefix="telerik" % onselectedindexchanged="RadComboBox1_SelectedIndexChanged" Value="RadComboBoxItem1" / Value="RadComboBoxItem2" / Value="RadComboBoxItem3" / oncheckedchanged="CheckBox1_CheckedChanged" / my c# - code behind code is like this : using System; using System.Collections.Generic; using System.Linq; using System.Web; using System.Web.UI; using System.Web.UI.WebControls; namespace WebApplication1 { public partial class AjaxManager : System.Web.UI.Page { protected void Page_Load(object sender, EventArgs e) { } protected void CheckBox1_CheckedChanged(object sender, EventArgs e) { if (CheckBox1.Checked == true) { Response.Write("Hello Teleik! - This Is True Of CheckBox"); } if (CheckBox1.Checked == false) { Response.Write("Hello Teleik! - This Is false Of CheckBox"); } } protected void RadComboBox1_SelectedIndexChanged(object o, Telerik.Web.UI.RadComboBoxSelectedIndexChangedEventArgs e) { if (RadComboBox1.SelectedIndex == 0) { CheckBox1.Checked = true; } if (RadComboBox1.SelectedIndex == 1) { CheckBox1.Checked = false; } if (RadComboBox1.SelectedIndex == 2) { CheckBox1.Checked = true; } } } } at now my CheckBox1 CheckChanged Not work... when i click on checkbox1 it disappears or nothing happens... how can i Force CheckBox1 CheckChanged To Work? thanks for attention

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  • How can I use removeFromSuperView and dismissModalViewControllerAnimated at same time ?

    - by srikanth rongali
    I have a UIViewController *view1 and another UIViewController *view2; I used presentModelViewController to navigate from view1 to view2. -(void)function:(id)sender { NSLog(@"The libraryFunction entered"); LibraryController *libraryController = [[LibraryController alloc]init]; [self presentModalViewController:libraryController animated:YES]; } I have another view UITableViewController *tableView; I added it to view2 as a subView. -(void)viewDidLoad { RootViewController *rootViewController = [[RootViewController alloc] initWithStyle:UITableViewStylePlain]; UINavigationController *aNavigationController = [[UINavigationController alloc] initWithRootViewController:rootViewController]; self.navController = aNavigationController; [aNavigationController release]; [rootViewController release]; navController.view.frame = CGRectMake(0, 0, 320, 460); [self.view addSubview:navController.view]; } In RootViewController.m I have - (void)viewDidLoad { [super viewDidLoad]; self.navigationItem.rightBarButtonItem = [[UIBarButtonItem alloc] initWithTitle:@"Close" style:UIBarButtonItemStyleBordered target:self action:@selector(close:)]; } -(void)close:(id)sender { [self.view removeFromSuperview]; [self dismissModalViewControllerAnimated:YES]; } WhenI touch close button I need to return the view1. So, I removed the tableView by using removeFromSuperView. But, I am not able to get to the first view. I do not get where to use - (void)dismissModalViewControllerAnimated:(BOOL)animated; to navigate to first view1 where I have started ? How can I do this ? Thank You.

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  • GridView doesn't remember state between postbacks

    - by Ryan
    Hi, I have a simple ASP page with databound grid (bound to an object source). The grid is within the page of a wizard and has a 'select' checkbox for each row. In one stage of the wizard, I bind the GridView: protected void Wizard1_NextButtonClick(object sender, WizardNavigationEventArgs e) { ... // Bind and display matches GridViewMatches.EnableViewState = true; GridViewMatches.DataSource = getEmailRecipients(); GridViewMatches.DataBind(); And when the finish button is clicked, I iterate through the rows and check what's selected: protected void Wizard1_FinishButtonClick(object sender, WizardNavigationEventArgs e) { // Set the selected values, depending on the checkboxes on the grid. foreach (GridViewRow gr in GridViewMatches.Rows) { Int32 personID = Convert.ToInt32(gr.Cells[0].Text); CheckBox selected = (CheckBox) gr.Cells[1].FindControl("CheckBoxSelectedToSend"); But at this stage GridViewMatches.Rows.Count = 0! I don't re-bind the grid, I shouldn't need to, right? I expect the view-state to maintain the state. (Also, if I do rebind the grid, my selection checkboxes will be cleared) NB: This page also dynamically adds user controls in OnInit method. I have heard that it might mess with the view state, but as far as I can tell, I am doing it correctly and the viewstate for those added controls seems to work (values are persisted between postbacks) Thanks a lot in advance for any help! Ryan UPDATE: Could this be to do with the fact I am setting the datasource programatically? I wondered if the asp engine was databinding the grid during the page lifecycle to a datasource that was not yet defined. (In a test page, the GridView is 'automatically' databound'. I don't want the grid to re-bound I just want the values from the viewstate from the previous post! Also, I have this in the asp header: ViewStateEncryptionMode="Never" - this was to resolve an occasional 'Invalid Viewstate Validation MAC' message Thanks again Ryan

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  • WF 4.0 can't get to resume workflow on the staging/production environment

    - by Yasmine Atta Hajjaj
    I have developed various registeration workflows using WF4.0. Each work flow has various bookmarks. I am using the registeration wf for an asp.net application. I tested the asp.net application locally and it is working fine( Starting WF, Persisting to db and resuming bookmarks). When I try to test it on the staging server, everything goes messy. I can no longer resume wfs and I get an error message : System.Runtime.DurableInstancing.InstancePersistenceCommandException was unhandled by user code Message=The execution of the InstancePersistenceCommand named {urn:schemas-microsoft-com:System.Activities.Persistence/command}LoadWorkflow was interrupted by an error. Source=System.Runtime.DurableInstancing StackTrace: at System.Runtime.AsyncResult.End[TAsyncResult](IAsyncResult result) at System.Runtime.DurableInstancing.InstancePersistenceContext.OuterExecute(InstanceHandle initialInstanceHandle, InstancePersistenceCommand command, Transaction transaction, TimeSpan timeout) at System.Runtime.DurableInstancing.InstanceStore.Execute(InstanceHandle handle, InstancePersistenceCommand command, TimeSpan timeout) at System.Activities.WorkflowApplication.PersistenceManager.Load(TimeSpan timeout) at System.Activities.WorkflowApplication.LoadCore(TimeSpan timeout, Boolean loadAny) at System.Activities.WorkflowApplication.Load(Guid instanceId, TimeSpan timeout) at System.Activities.WorkflowApplication.Load(Guid instanceId) at CEO_StartUpCEORegisterationTest.LoadInstance(Guid wfInstanceId) in c:\Users\Kunoichi\Documents\Visual Studio 2010\Projects\CMERegistrationSystem\RegistrationPortal\CEO\StartUpCEORegisterationTest.aspx.cs:line 64 at CEO_StartUpCEORegisterationTest.Page_Load(Object sender, EventArgs e) in c:\Users\Kunoichi\Documents\Visual Studio 2010\Projects\CMERegistrationSystem\RegistrationPortal\CEO\StartUpCEORegisterationTest.aspx.cs:line 44 at System.Web.Util.CalliHelper.EventArgFunctionCaller(IntPtr fp, Object o, Object t, EventArgs e) at System.Web.Util.CalliEventHandlerDelegateProxy.Callback(Object sender, EventArgs e) at System.Web.UI.Control.OnLoad(EventArgs e) at System.Web.UI.Control.LoadRecursive() at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) InnerException: System.Data.SqlClient.SqlException Message=Index 'NCIX_KeysTable_SurrogateInstanceId' on table 'KeysTable' (specified in the FROM clause) does not exist. Source=.Net SqlClient Data Provider ErrorCode=-2146232060 Class=16 LineNumber=211 Number=308 Procedure=LoadInstance Server= State=1 StackTrace: at System.Runtime.AsyncResult.End[TAsyncResult](IAsyncResult result) at System.Activities.DurableInstancing.SqlWorkflowInstanceStoreAsyncResult.SqlCommandAsyncResultCallback(IAsyncResult result) I know that this is quite verbose. But I have been banging my head against the wall for more than a week. I did search and all I came to know was to work on ms dtc. I enabled it on the staging server , I installed application server on the staging server and I am still getting the same error. I would appreciate if anyone could help with the problem. Thanks in advance :)

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  • Dismissing iPad UIPopoverController from within it's content controller

    - by joshholat
    So I have a popover with a button in it. When that button is pushed, I want the popover to go away. It seems easy enough, but I can't figure it out for the life of me. The code I use to show the popover is below: AddCategoryViewController* content = [[AddCategoryViewController alloc] init]; UIPopoverController* aPopover = [[UIPopoverController alloc] initWithContentViewController:content]; aPopover.delegate = self; [content release]; // Store the popover in a custom property for later use. self.addCategoryPopover = aPopover; [aPopover release]; [addCategoryPopover presentPopoverFromBarButtonItem:sender permittedArrowDirections:UIPopoverArrowDirectionUp animated:YES]; Within the addcategoryviewcontroller, I have: -(IBAction)saveAddCategory:(id)sender { if (rootViewController == nil) rootViewController = [[RootViewController alloc] init]; [rootViewController.addCategoryPopover dismissPopoverAnimated:YES]; [rootViewController dismissPopover]; } Rootviewcontroller is where the popover is being created from. Unfortunately, neither of those methods work to dismiss it. any help?

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  • Send Data Using the WebRequest Class to DotNetOpenAuth website

    - by Denis
    I am trying to send data to DotNetOpenAuth website as described here http://msdn.microsoft.com/en-us/library/debx8sh9.aspx Sender receive (500) Internal Server Error. The same code for blank website without DotNetOpenAuth works fine. Should I tweak something? Here is an exception: System.ArgumentNullException was unhandled by user code Message="Value cannot be null.\r\nParameter name: key" Source="mscorlib" ParamName="key" StackTrace: at System.ThrowHelper.ThrowArgumentNullException(ExceptionArgument argument) at System.Collections.Generic.Dictionary`2.Insert(TKey key, TValue value, Boolean add) at System.Collections.Generic.Dictionary`2.Add(TKey key, TValue value) at DotNetOpenAuth.OAuth.ChannelElements.OAuthChannel.ReadFromRequestCore(HttpRequestInfo request) in c:\BuildAgent\work\7ab20c0d948e028f\src\DotNetOpenAuth\OAuth\ChannelElements\OAuthChannel.cs:line 145 at DotNetOpenAuth.Messaging.Channel.ReadFromRequest(HttpRequestInfo httpRequest) in c:\BuildAgent\work\7ab20c0d948e028f\src\DotNetOpenAuth\Messaging\Channel.cs:line 372 at DotNetOpenAuth.OAuth.ServiceProvider.ReadRequest(HttpRequestInfo request) in c:\BuildAgent\work\7ab20c0d948e028f\src\DotNetOpenAuth\OAuth\ServiceProvider.cs:line 222 Exception occurs on last line of the code: private void context_AuthenticateRequest(object sender, EventArgs e) { // Don't read OAuth messages directed at the OAuth controller or else we'll fail nonce checks. if (this.IsOAuthControllerRequest()) { return; } if (HttpContext.Current.Request.HttpMethod != "HEAD") { // workaround: avoid involving OAuth for HEAD requests. IDirectedProtocolMessage incomingMessage = OAuthServiceProvider.ServiceProvider.ReadRequest(new HttpRequestInfo(this.application.Context.Request));

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