Search Results

Search found 5961 results on 239 pages for 'wpf 4 5'.

Page 160/239 | < Previous Page | 156 157 158 159 160 161 162 163 164 165 166 167  | Next Page >

  • Deleteing an image in run time

    - by Nadav Stern
    hey, i am trying to delete an image with the method: (the file path is correct by 100%) if(File.Exists(filePath)) File.Delete(filePath); and i am getting the following exception : An unhandled exception of type 'System.IO.IOException' occurred in mscorlib.dll Additional information: The process cannot access the file 'C:\visual_programming\yad2\yad2\bin\Debug\images\1.jpg' because it is being used by another process. thanks in advance for your help

    Read the article

  • How to highlight matching sub-strings inside a ListBox?

    - by Kishore Kumar
    I have one TextBox and one listbox for searching a collection of data. While searching a text inside a Listbox if that matching string is found anywhere in the list it should show in Green color with Bold. eg. I have string collection like "Dependency Property, Custom Property, Normal Property". If I type in the Search Text box "prop" all the Three with "prop" (only the word Prop) should be in Bold and its color should be in green. Any idea how it can be done?. Data inside listbox is represented using DataTemplate.

    Read the article

  • How to Read Device Data From serial port

    - by Aamir Khurshid
    I have one device which sends data on COM port say on COM13. Now i want to read that data and display it in the RichTextBox or in any text control. I have written the application with the help of IO and IO.Ports but comport.DataRecived event does not fire, even though device is sending data on that port. I have some software on which i define the port number and it successfully display data, which insure me that data is receiving on the Port but i am unable to receive. Is there any way i can read data? comm.Parity = cboParity.Text;//None comm.StopBits = cboStop.Text;//One comm.DataBits = cboData.Text;//8 comm.BaudRate = cboBaud.Text;//9600 comm.DisplayWindow = rtbDisplay;//Null comm.PortName = "COM13"; comm.OpenPort(); cmdOpen.Enabled = false; cmdClose.Enabled = true; cmdSend.Enabled = true; public bool OpenPort() { if (comPort.IsOpen) { comPort.Close(); } comPort.DataReceived += new SerialDataReceivedEventHandler(comPort_DataReceived); comPort.PortName = _portName; comPort.Open();return true; }

    Read the article

  • Binding dont refresh, even when explicitly calling UpdateTarget

    - by Erik
    My ListView does not refresh its bindings when i call OnPropertyChanged. I have tried to force it to refresh by: NestedArguments.GetBindingExpression(ItemsControl.ItemsSourceProperty).UpdateTarget(); But still, no luck! YES, it does get updated. I have set a breakpoint and checked. What is going on? Other bindings seem to work without a problem

    Read the article

  • Evenly distibuted scatterViewItems that dont overlap

    - by Christo Fur
    Hi I have an app that creates a variable number of ScatterviewItems based on which tagged object is placed on the surface table. The ScatterViewItems are added programatically to the ScatterView based on info looked up in a DB The Scatterview does a good job of displaying this info However, I would like them to be evenly distributed across the table and not have any items overlapping Any ideas how to do that?

    Read the article

  • AdornerDecorator and tab stop issues

    - by Trev
    Hi, I am using IDataErrorInfo to validate and indicate errors in my text boxes. I am finding I have to tab once for the text box and once for the adornerdecorator. I have an error template: <ControlTemplate x:Key="ErrorTemplate"> <StackPanel KeyboardNavigation.IsTabStop="False" > <Border KeyboardNavigation.IsTabStop="False" BorderBrush="Red" BorderThickness="1" Padding="2" CornerRadius="2"> <AdornedElementPlaceholder KeyboardNavigation.IsTabStop="False" /> </Border> </StackPanel> </ControlTemplate> a textbox template: <Style x:Key="TextBoxInError" TargetType="{x:Type TextBox}"> <Setter Property="KeyboardNavigation.TabNavigation" Value="None"/> <Setter Property="FocusVisualStyle" Value="{x:Null}"/> <Setter Property="Margin" Value="0,5,0,5"/> <Setter Property="AllowDrop" Value="true"/> <Setter Property="HorizontalContentAlignment" Value="left"/> <Setter Property="Template"> <Setter.Value> <ControlTemplate TargetType="{x:Type TextBox}"> <Grid KeyboardNavigation.IsTabStop="False" > <Border KeyboardNavigation.IsTabStop="False" x:Name="Border" Background="{DynamicResource WindowBackgroundBrush}" BorderBrush="{DynamicResource SolidBorderBrush}" BorderThickness="1" Padding="2" CornerRadius="2"> <ScrollViewer IsTabStop="False" Margin="0" x:Name="PART_ContentHost" Style="{DynamicResource SimpleScrollViewer}" Background="{TemplateBinding Background}"/> </Border> </Grid> <ControlTemplate.Triggers> <Trigger Property="Validation.HasError" Value="true"> <Setter Property="ToolTip" Value="{Binding RelativeSource={RelativeSource Self}, Path=(Validation.Errors), Converter={StaticResource errorConverter}}"/> </Trigger> <Trigger Property="IsEnabled" Value="false"> <Setter Property="Foreground" Value="Gray"/> </Trigger> </ControlTemplate.Triggers> </ControlTemplate> </Setter.Value> </Setter> </Style> and declare a text box like this: <AdornerDecorator KeyboardNavigation.IsTabStop="False" > <TextBox Margin="5,5,5,3" x:Name="txtName" IsEnabled="{Binding EditMode}" Validation.ErrorTemplate="{StaticResource ErrorTemplate}" Text="{Binding ApplicationName, Mode=TwoWay, ValidatesOnExceptions=True, NotifyOnValidationError=True, ValidatesOnDataErrors=True}" Height="25" MaxLength="50" MaxLines="1" Style="{StaticResource TextBoxInError}"/> </AdornerDecorator> If the adorner is round one text box as above then I tab once to leave the text box and once to leave the 'adornment' (it seems) If I have the adorner around a stackpanel of text boxes then I tab once each for the text boxes then have to go back through all the 'adornments' in turn. When tabbing through the adornments the focus goes on the red border defined in the control template.. any ideas? thanks

    Read the article

  • Can you add items to a context menu in a parents menu?

    - by Joel Barsotti
    or conversly can you import a parents menu items into a child window? So I have an UI that is composed of controls that all have their own context menu, but we also have a datagrid that get's nested inside our generic contaier. So when you right click the datagrid elements I want to show both the context items I've created for the datagrid and the items from the generic container.

    Read the article

  • How to get parent item in Treeview

    - by Anu
    Hi,To get the child items as string i used the following code private void treeview1_SelectedItemChanged(object sender, RoutedPropertyChangedEventArgs<object> e) { if (treeview1.SelectedItem != null) { Animal bar = (Animal)treeview1.SelectedItem; string str = bar.Name; int boxty = bar.BoxType; int boxno = bar.BoxNo; } } It works fine .But when i click on parent(instead of + sign),it goes to this code and shows error.Ofcourse im casting SelectedItem to my List-Animal. But i dont want this.I have to check,whether the clciked item is parent,if it is so then i will skip this coding.Only when i click the child items it will go to this coding. How can i do that?How can i identify the selected item is parent.

    Read the article

  • DataGrid calculate difference between values in two databound cells

    - by justMe
    Hello! In my small application I have a DataGrid (see screenshot) that's bound to a list of Measurement objects. A Measurement is just a data container with two properties: Date and CounterGas (float). Each Measurement object represents my gas consumption at a specific date. The list of measurements is bound to the DataGrid as follows: <DataGrid ItemsSource="{Binding Path=Measurements}" AutoGenerateColumns="False"> <DataGrid.Columns> <DataGridTextColumn Header="Date" Binding="{Binding Path=Date, StringFormat={}{0:dd.MM.yyyy}}" /> <DataGridTextColumn Header="Counter Gas" Binding="{Binding Path=ValueGas, StringFormat={}{0:F3}}" /> </DataGrid.Columns> </DataGrid> Well, and now my question :) I'd like to have another column right next to the column "Counter Gas" which shows the difference between the actual counter value and the last counter value. E.g. this additional column should calculate the difference between the value of of Feb. 13th and Feb. 6th = 199.789 - 187.115 = 15.674 What is the best way to achieve this? I'd like to avoid any calculation in the Measurement class which should just hold the data. I'd rather more like the DataGrid to handle the calculation. So is there a way to add another column that just calculates the difference between to values? Maybe using some kind of converter and extreme binding? ;D P.S.: Maybe someone with a better reputation could embed the screenshot. Thanks :)

    Read the article

  • How to save the content of Textbox into a textfile

    - by Owais Wani
    I have a textbox which has some content. I also have a button (SAVE) which shud open the FileSaveDialog and allow the content to be saved in a .txt file. XAML: <TextBox Height="93" IsReadOnly="True" Text="{Binding Path=ReadMessage, Mode=TwoWay}" Name="MessageRead" /> <Button Content="Save" Command="{Binding Path=SaveFileCommand}" Name="I2CSaveBtn" /> ViewModel: private string _readMessage = string.Empty; public string ReadMessage { get { return _readMessage; } set { _readMessage = value; NotifyPropertyChanged("ReadMessage"); } } public static RelayCommand SaveFileCommand { get; set; } private void RegisterCommands() { SaveFileCommand = new RelayCommand(param => this.ExecuteSaveFileDialog()); } private void ExecuteSaveFileDialog() { //What To Do HERE??? } What I basically need is to read the content of textbox, open a file save dialog and store it in a text file to be saved in my system.

    Read the article

  • Google Web Toolkit or Microsoft Technology (Silverlight, ASP.NET)

    - by NativeByte
    We have a large code base in MFC and VB. A few applications are in .NET. All these applications interoperate with each other on the user's machine and also connect with Unix servers via sockets. Recently we have started discussing a re-write of our applications and possibility of moving a lot of these desktop applications to web (they would run in intranet). A straight forward way is rewritting them in one of the .NET technologies. But a suggestion about using Google Web tookit has popped up and the argument is that it would help creating applications that would run in a browser on both desktop and mobile devices. One of the key problem that I see is that GWT is a large abstraction over Javascript. This will require the team to learn GWT, Javascript, IDEs etc as their experience has been primarily Microsoft technologies and not Java. It would be easier for them to learn .NET technologies instead of GWT. I do not have a depth of GWT and its drawback pittfalls and do not know about a parallel Microsoft Technology that I should investigate. So I would appreciate if people here can share their views or experiences using GWT or equivalent Microsoft technology.

    Read the article

  • How to control the order of module initialization in Prism

    - by Robert Taylor
    I'm using Prism V2 with a DirectoryModuleCatalog and I need the modules to be initialized in a certain order. The desired order is specified with an attribute on each IModule implementation. This is so that as each module is initialized, they add their View into a TabControl region and the order of the tabs needs to be deterministic and controlled by the module author. The order does not imply a dependency, but rather just an order that they should be initialized in. In other words: modules A, B, and C may have priorities of 1, 2, and 3 respectively. B does not have a dependency on A - it just needs to get loaded into the TabControl region after A. So that we have a deterministic and controllable order of the tabs. Also, B might not exist at runtime; so they would load as A, C because the priority should determine the order (1, 3). If i used the ModuleDependency, then module "C" will not be able to load w/o all of it's dependencies. I can manage the logic of how to sort the modules, but i can't figure out where to put said logic.

    Read the article

  • How do I get a ComboBox SelectionChanged event to fire from a nested ListBoxItem?

    - by Stephen McCusker
    This is a rather complex problem that has me really confused right now. Any help would be greatly appreciated. The Setup: ListBox of Type A UserControls -ListBoxItem of Type A UserControl --ListBox of Type B UserControls ---ListBoxItem of Type B UserControl ----ListBox of Type C UserControls -----ListBoxItem of Type C UserControl (contains the ComboBox) In other words, the Type A control has a ListBox of Type B controls that has a ListBox of Type C controls. All of the controls are hierarchical in nature. Type A contains the data that's needed to load the Type B controls and the Type B contains the data that's needed to load the Type C controls. The Type C control has a standard ComboBox in it for changing the values of the present items. In addition to the above structure, I have drag and dropping tied to the PreviewMouseLeftButtonDown event on both the Type A and Type B UserControl levels to handle reordering/deleting/etc commands in the GUI. All of this is working as intended. The Problem: When I attempt to change the value in the ComboBox, the SelectionChanged event never fires on the Type C "level" unless I'm careful enough to click on the borders/spacing in between any Type A or B controls. This happens when my ComboBox popout menu overlaps on either a Type A or B control located below itself. The selection events for Type A or B are firing instead of the Type C events, so the ComboBox is never changing its value reliably. In the debugger, the code for handling the drag and drop is triggering on the next ListBoxItem that's located underneath the ComboBox. Thoughts: Is there a way I can make my ComboBox popup take prevalence over the items behind it while double-nested in a ListBox (ie, ignore anything behind it while it's open)? Is there some way to reroute the incorrectly firing SelectionChanged events down to the ComboBox that's supposed to be triggering them?

    Read the article

  • Fastest way to display a full calendar

    - by Aurélien Ribon
    Hello, I need to display a complete calendar (12 months, 31~ days/month) on screen. Currently, I'm using a 12-column grid, with each column filled with a "months" stackpanel. Each "month" stackpanel is filled with 31 (or less) day representations. Each day representation is composed of a DockPanel embedding three controls : a textblock to display the day letter a textblock to display the day number a textblock to display a short message Of course, performances are crushed down when I try to resize the window. Is there a useful trick to allow a fast display of many textblocks ?

    Read the article

  • datagrid column custom check mark

    - by Berryl
    I want a read only column bound to a boolean that shows a check mark image when true and nothing when false. The problem is the false value; I just want to show whatever the background of the datagrid is, but I don't see how to clear the image source. What should the Value of the image source be to do this? Cheers, Berryl <DataGridTemplateColumn.CellTemplate> <DataTemplate> <Image Name="imgChecked" Source="\Img_Checkmark" /> <DataTemplate.Triggers> <DataTrigger Binding="{Binding IsPrimary}" Value="False"> <Setter TargetName="imgChecked" Property="Source" Value=""/> *** ??? *** </DataTrigger> </DataTemplate.Triggers> </DataTemplate> </DataGridTemplateColumn.CellTemplate>

    Read the article

  • How to evenly space out GridViewColumns in GridView?

    - by Kugel
    Hello, This is my XAML: <ListView ItemsSource="{Binding Items}"> <ListView.View> <GridView> <GridViewColumn Header="Property1" DisplayMemberBinding="{Binding Property1}" /> <GridViewColumn Header="Property2" DisplayMemberBinding="{Binding Property2}" /> </GridView> </ListView.View> </ListView> I want these 2 columns to take up the width of ListView in 1:1 ratio. How can I achieve this?

    Read the article

  • Cancel Key press event

    - by Asim Sajjad
    How can I return the key, mean if I want to allow only interger value in the textbox , how can I don't allow user to not enter value other then integer, regarding, keypress event, I know there are other ways such as expression to match the string value, but I want to not assign invalid value to the textbox. if (( value 0 a&&(value <=9)) then assigned else return thanks in advance

    Read the article

  • UI Design Choices and How to Implement Them

    - by AKRamkumar
    I am making an application that is a dashboard/widget host. I am using MEF to load the plugins and I have a ui Concept Idea like this: http://i42.tinypic.com/scb6nd.png Is this a good design choice? How would I implement the Navigation? Is there any Design Patter you would reccomend for this? Note: My contract interface is this. public interface IDashboardPlugin { public string Name{get;} public string Description{get;} public string Author{get;} public UIElement UI{get;} }

    Read the article

  • Suppressing PostSharp Multicast with Attribute

    - by Dan Bryant
    I've recently started experimenting with PostSharp and I found a particularly helpful aspect to automate implementation of INotifyPropertyChanged. You can see the example here. The basic functionality is excellent (all properties will be notified), but there are cases where I might want to suppress notification. For instance, I might know that a particular property is set once in the constructor and will never change again. As such, there is no need to emit the code for NotifyPropertyChanged. The overhead is minimal when classes are not frequently instantiated and I can prevent the problem by switching from an automatically generated property to a field-backed property and writing to the field. However, as I'm learning this new tool, it would be helpful to know if there is a way to tag a property with an attribute to suppress the code generation. I'd like to be able to do something like this: [NotifyPropertyChanged] public class MyClass { public double SomeValue { get; set; } public double ModifiedValue { get; private set; } [SuppressNotify] public double OnlySetOnce { get; private set; } public MyClass() { OnlySetOnce = 1.0; } }

    Read the article

  • Method works on Emulator but no on Microsoft Surface unit?

    - by Roflcoptr
    I have the following code. The StartRecord method trows an error on the Microsoft Surface Unit. But when I'm testing it on the emulator, it all works great. Any hints how 1) to find the exception that is thrown on the Microsoft Surface Unit? 2) to find the error in the code? any assumptions? private void StartRecord(object sender, ContactEventArgs e) { isRecording = true; StartButton.IsEnabled = false; recordTimer = new Timer(10); recordTimer.Elapsed += new ElapsedEventHandler(recordTimer_Elapsed); PlaybackRoot.Visibility = System.Windows.Visibility.Collapsed; EllapsedRecord.Visibility = System.Windows.Visibility.Visible; InputLevel.Visibility = System.Windows.Visibility.Visible; long time = DateTime.Now.Ticks; String fileName = Convert.ToString(time) + ".wav"; Console.WriteLine(fileName); startTime = DateTime.UtcNow; recordTimer.Start(); record = new AudioRecording(fileName); record.getSampleAggregator().MaximumCalculated += new EventHandler<MaxSampleEventArgs>(AudioControl_MaximumCalculated); record.start(); }

    Read the article

< Previous Page | 156 157 158 159 160 161 162 163 164 165 166 167  | Next Page >