HI,

  I have two usercontrols UC1 (with a single text box ) and UC2 (with a single textBlock) and both the user controls are placed in the MAinwindow. UC1  and UC2 has its own corresponding View models (UC1VM and UC2VM).

My requirement is, when I type something in my UC1 textbox, I want it to be dispalyed in the UC2 textblock. so waht I did is had a text property in my UC1VM.

string myText;

        public string MyText
        {
            get { return myText; }
            set { myText = value;
                PropertyChanged(this, new PropertyChangedEventArgs("MyText")); }
        }

IN my UC2VM I had a Attached DP as show belwo (UC2VM inherits DependencyObject).

public static DependencyProperty StringDetailProperty = DependencyProperty.RegisterAttached("StringDetail", typeof(string), typeof(UC2VM), new PropertyMetadata(new PropertyChangedCallback(xyz)));


        public static void SetStringDetail(UIElement element, string value)
        {
            element.SetValue(StringDetailProperty, value);
        }
        public static string GetStringDetail(UIElement element)
        {
            return (string)element.GetValue(StringDetailProperty);
        }


        static void xyz(DependencyObject depObj, DependencyPropertyChangedEventArgs args)
        {
            .....
        }

My mainWindow XAML as follows.

<Window x:Class...<ucs:UC1  x:Name="uc1" ></ucs:UC1><ucs:UC2 ucs1:UC2VM.StringDetail="{Binding ElementName=uc1, Path=MyText}"  ></ucs:UC2></Window>

Whenever I change the textbox value in my UC1, the "MyText" property  gets updated, but hte function xyz written in UC2VM is not getting hit.  kindly help.  Not interested in using any frameworks like MVVMLight or prism etc... Like to know how ti can be achieved without using the frameworks.

Aslo one more question. Can I write a DP in my code behind file of a User control as per mvvm. 

Thanks,

Sanjay.

Hi,

We have real trading application with grid with 100+ columns, and there are so many columns and all are numbers , which coming from different sources.

we want to test number , but did not find any tool which can help, or please suggest best way to perform number testing.

we have unit test case in our application , but not doing number matching,

please suggest how to do it?

Thanks

Ashok-

Jumpingboy

Hello. I have this code

private void TreeViewItem_Selected(object sender, RoutedEventArgs e)
        {
             Assembly assembly = Assembly.GetExecutingAssembly();
             string NAME = "WpfApplication2.Res.Pages."+treeView1.Name+".xaml";

            using (Stream stream = assembly.GetManifestResourceStream(NAME))
            {
                FlowDocument document = (FlowDocument)XamlReader.Load(stream);
                flow.Document = document;
            }
        }

After compiling I choose item from treeView and get ArgumentNullException for this line

FlowDocument document = (FlowDocument)XamlReader.Load(stream);

I'm sure that issue called by 

string NAME = "WpfApplication2.Res.Pages."+treeView1.Name+".xaml"

I don't want to use switch method, because there's going to be over a hundred items in my app.

How to fix it? Thank you

Say I have a very simple WPF application.

 public partial class MainWindow : Window
    {
        public MainWindow()
        {
            InitializeComponent();
            this.DataContext = new MainViewModel();
        }

There is a label, I want to display a text on it.

Connected to the server: xx.xx.xxx.xxx

Hello,

I have a question about updating a datagrid with changes from a SQL server. I have a application (Multiple instances running across a network) that polls a server every so often and pulls data from a table to update a datagrid with changes that have been made to the table. The current implementation I have is as follows:

1.) Application Pulls data from server and creates new datatable
2.) Application records current selection in datagrid.
3.) Change datagrid ItemsSource to the new datatable that was retrieved.
4.) Set the selection back to the item that was selected before the itemsource was changed.

-This all is executed using a secondary thread as to not interrupt the UI thread.

It works flawless and the update process doesn't cause any flicker but I feel like there was a more direct approach without having to have as much code, also kinda nervous about it I have more than a few hundred rows if I will start noticing performance issues. (Which I should never have more than 50 rows at any given time giving consideration to how the application is being used, just want to plan ahead for the future.

Do you feel like what I currently have is sufficient enough? or could you point to a article on the best way to accomplish a way to synchronize two datatables (New one from server against the current one Im using to display the data in a datagrid).

WPF VB.net, Framework 4.0, Microsoft SQL Server 2008

Hi,

first off, i have checked other threads about similar issues and tried their solutions, yet i could not get it to work.

The problem: I want to write a string using the System.Windows. Media.DrawingContext.DrawText to a Visual in the fontfamily of TitilliumMaps which is a custom font. Unfortunately, this does not work as it prints the string always in the default font. The printing of the text is performed in a helper project and i have packed the custom font also in a separate project and set it's Build Option to Content and Copy to Output Directory to Copy Always (I have tried different combinations of these properties, but none seemed to work). Below you can see the source code for printing the text...

public readonly Typeface LogoTypeFaceNormal = new Typeface(new FontFamily(new Uri("pack://application:,,,/CustomFonts/"), "./#TitilliumMaps29L"), FontStyles.Normal, FontWeights.Bold, FontStretches.Normal);

drawingContext.DrawText(
                new FormattedText(
                    "The quick brown fox g...",
                    CultureInfo.InvariantCulture,
                    FlowDirection.LeftToRight,
                    LogoTypeFaceNormal,
                    ConversionUtils.PointsToPixels(10),
                    FooterTextBrush),
                    new Point(bounds.Left + 0, contentOriginY + 4));

Hope someone had already this issue and could help me with it. Thanks in advance!

I have a DatePicker Control for Date of Birth. I want to validate it when something invalid is entered.

For e.g. if for the first time i enter abcd3w in datepicker and tab out, the value gets clear and that's fine because it is a default behavior.

But i want to validate this and turn border red. I am using ValidationRule but it never gets fired in this scenario.

If I put a valid date and then again make it empty the validation gets fired. Thereafter if i put any invalid value as asdh33 the validation rule takes care of it and behaves fine.

Please suggest.

Thanks,

Abdi

G'Day

I'm trying to build a WPF application that will sit in the system tray until a specific event occurs which will cause a WPF window to magically appear.

I have googled and searched the forum for more information about using the NotifyIcon but cant seem to get it working.

Currently I have got my form set to ShowInTaskBar=False and I can make it invisible easily enough, however I just need to get an icon into the system tray so I can handle the activation events.

Any tips?

Hello, in a window, I have a TextBlock binded to a property of my object. This property is aList<Person>, and I'm using a converter to display names, separated by ;

class CollectionToSingleItem : IValueConverter
{
    public object Convert(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
    {
         object myitem = new object();
         List<Person> mypers = (List<Person>)value;
         if (mypers.Count > 0)
         {
             foreach (Person p in mypers)
             {
                  myitem += p.FirstName + " " + p.Name + " ; ";
             }
          }
          return myitem;
    }
}

It works fine.

Now, I'd like to turn each name into an Hyperlink and that's the big problem...

I've tried this:

TextBlock tb = new TextBlock();
foreach (Person p in mypers)
{
    Run myrun = new Run(p.FirstName + " " + p.Name);
    Hyperlink lnk = new Hyperlink(myrun);
    lnk.NavigateUri = new Uri("http://www.google.com"); //Just for test
    tb.Inlines.Add(lnk);
}
myitem = tb.Inlines;

return myitem;

But nothing's displayed.

How could I achieve this ?

The September Guru results are posted!

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Below are the highlights, just the medal winners. Please see the blog above for more entrants and comments, which had to be trimmed to fit into this 60,000 character forum limit. 

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If you can do better, or simply wish to join our community and make a name for yourself, please enter this month's competition:

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Regards,
Pete

#PEJL

Got any nice code? If you invest time in coding an elegant, novel or impressive answer on MSDN forums, why not copy it over to the one and onlyTechNet Wiki, for future generations to benefit from! You'll never get archived again!

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I have WPF MVVM application and a UserControl and I am trying to bubble up a LostFocus event from a TextBox on the UserControl to the parent, but I can not find any examples, all I can find is ButtonClick event examples where the class inherits the Button class.  I don't want to inherit the Button class because I am inheriting another class already.  Can someone point me to an example of how to Bubble up the lost focus event to the parent ?  I know it's really simple if you know what you are doing. 

Thank You.

Peter

 I need to make two Windows separatly. How to transfer selected treeView flowDocument from MainWindow to Window1. Here are codes:

MainWindow

namespaceWpfApplication1{publicpartialclassMainWindow:Window{publicTreeViewItem tvi;publicMainWindow(){InitializeComponent();}privatevoid treeView_Selected(object sender,RoutedEventArgs e){
            tvi = sender asTreeViewItem;Window1 w1 =newWindow1();
            w1.Show();}}}

Window1

namespaceWpfApplication1{publicpartialclassWindow1:Window{publicMainWindow win;publicWindow1(){InitializeComponent();}privatevoid flow_Initialized(object sender,EventArgs e){TreeViewItem tvi = sender asTreeViewItem;Assembly assembly =Assembly.GetExecutingAssembly();FlowDocument document =null;using(Stream stream = assembly.GetManifestResourceStream(assembly.GetName().Name+".g.resources")){using(var resourceReader =newResourceReader(stream)){foreach(DictionaryEntry resource in resourceReader){if(resource.Key.ToString().Equals("pages/"+ win.tvi.Name.ToLower()+".xaml")){
                             document =(FlowDocument)XamlReader.Load(resource.ValueasStream);}}}}
             flow.Document= document;}}}

In Window1 it'll going to be Exit button with Garbage Collection. When I click on item from MainWindow it gives me NullReferenceException for

if(resource.Key.ToString().Equals("pages/"+ win.tvi.Name.ToLower()+".xaml"))

Thanks

Hi,

I have a WPF application that hosts a Win32 control in a WindowsFormsHost. Win32 is showing Explore to operate user’s files.

Issue: After the tab-key control has been moved to the Win32 within this application once, the Win32 will keep to handle the tab-key control.

Thereafter, the user becomes unable to operate by pressing the tab-key in all applications.

I’d like to detect the tab-key control in the WPF application even after the control of the tab-key was moved to Win32 once.

Thanks for any ideas,

Hayato  (TKNET SERVICE LIMITED)

Hayato Takeda

Hi,

I am using Visual Studio 2012 and Expression Blend.  I would like to create a custom progressbar that will have a starting foreground color (for example black) at the minimum value and transition to a different forground color (for example yelow) when the maximum value is reached. I've studied the template in Expression Blend. Within the "Part_Indicator" control part, there is a grid named "Foreground" that contains a rectangle named "Indicator". I believe I have to create an animation that changes the foreground color of "Indicator" from black to yellow as indicator grows from the minimum value to the maximum value (please correct me if I'm wrong). If the maximum value is not reached, the animation should pause at the last color value it had when the progress bar stopped. This would be the final color displayed in "Indicator".  It looks like the foreground property of "Indicator" is template bound. Should I reset the binding on Indicator's foreground color and use a ContolStoryBoardActin for the storyboard that shows the color transitions as the indicator grows? If I have to do this with animation, what trigger would I use for the ControlStoryboardAction to start the animation when the indicator starts to show progress?  How will I pause the storyboard animation when the Indicator stops showing progress? If I record a 10 second animation, will there be an issue if it takes longer than 10 seconds for the progress bar to reach its final position?

If there is a simpler way to achieve this, other than animation, I would love to hear about it.

Thanks

hi 

i have a user control of checked list box.I have created this with list box and check box.

How can i check one item,based  on index 

Thanks 

Deepu Jose

http://oi60.tinypic.com/a0f8dw.jpg

What is wrong with this code? It is always considered as wrong. No matter where I place it, it is either half-wrong or fully wrong. I'm making Visual C# WPF on Visual Studio 2013 Professional Update 3.

ComboBox, does exist, error log gives total of 6 errors, but ComboBox is still empty, when started it tells me that there were errors when building and asks me if I want to continue, after I click on "Yes", it starts it, but ComboBox is still empty.

ComboBox frick = new ComboBox();
frick.Items.Add("E");
frick.SelectedIndex = ComboBox1.Items.Count - 1;

<mytubeelement data="{"bundle":{"label_delimitor":":","percentage":"%","smart_buffer":"Smart Buffer","start_playing_when_buffered":"Start playing when buffered","sound":"Sound","desktop_notification":"Desktop Notification","continuation_on_next_line":"-","loop":"Loop","only_notify":"Only Notify","estimated_time":"Estimated Time","global_preferences":"Global Preferences","no_notification_supported_on_your_browser":"No notification style supported on your browser version","video_buffered":"Video Buffered","buffered":"Buffered","hyphen":"-","buffered_message":"The video has been buffered as requested and is ready to play.","not_supported":"Not Supported","on":"On","off":"Off","click_to_enable_for_this_site":"Click to enable for this site","desktop_notification_denied":"You have denied permission for desktop notification for this site","notification_status_delimitor":";","error":"Error","adblock_interferance_message":"Adblock (or similar extension) is known to interfere with SmartVideo. Please add this url to adblock whitelist.","calculating":"Calculating","waiting":"Waiting","will_start_buffering_when_initialized":"Will start buffering when initialized","will_start_playing_when_initialized":"Will start playing when initialized","completed":"Completed","buffering_stalled":"Buffering is stalled. Will stop.","stopped":"Stopped","hr":"Hr","min":"Min","sec":"Sec","any_moment":"Any Moment","popup_donate_to":"Donate to","extension_id":null},"prefs":{"desktopNotification":true,"soundNotification":true,"logLevel":0,"enable":true,"loop":false,"hidePopup":false,"autoPlay":false,"autoBuffer":true,"autoPlayOnBuffer":false,"autoPlayOnBufferPercentage":42,"autoPlayOnSmartBuffer":true,"quality":"default","fshd":false,"onlyNotification":false,"enableFullScreen":true,"saveBandwidth":false,"hideAnnotations":false,"turnOffPagedBuffering":false}}" event="preferencesUpdated" id="myTubeRelayElementToPage"></mytubeelement>

Dear all,

I am building a WPF application in which I need to pool every minutes for a payement device status. By device status, the role is to be able to make a live monitoring in order to early identify its state and possible failures.

For that I am different approach and would love to hear from you.

Solution 1:

having a time which fire every minutes and then call the GetStatus method

Solution 2 :

having a Task.Run which sleep for a minute and then run the GetStatus method

Thanks for advise

regards

Hello,

I am experiencing some problems while creating a widened PathGeometry from a simple Geometry. One of the resulting geometry figures, the outer one, contains rounded corners, even if I set the Pen to not do so.

Here is the code the reproduce the problem:

private void Window_Loaded(object sender, RoutedEventArgs e)
        {
            StreamGeometry geom = new StreamGeometry();

            DrawLines(geom);

            Pen p = new Pen(Brushes.Black, 10);
            p.LineJoin = PenLineJoin.Miter;
            p.EndLineCap = PenLineCap.Flat;
            p.StartLineCap = PenLineCap.Flat;

            PathGeometry pathGeoWidened = geom.GetWidenedPathGeometry(p);
            PathGeometry pathGeom = pathGeoWidened.GetOutlinedPathGeometry();

            Path myPath = new Path();
            myPath.Stroke = Brushes.Black;
            myPath.Data = pathGeom;
            myCanvas.Children.Add(myPath);

        }

 private static void DrawLines(StreamGeometry geom)
        {
            using (var context = geom.Open())
            {
                context.BeginFigure(new Point(100, 100), true, true);
                context.LineTo(new Point(100, 200), true, true);
                context.LineTo(new Point(200, 200), true, true);
                context.LineTo(new Point(200, 100), true, true);
            }
        }

The resulting visual is this:

As you can see, the outer countour contains rounded corners. I need something flat, like the inside contour.

Any ideas,

Igor.

.NET Software developer for industrial internet and automation system.

Hi Every one,

The RadioButton GroupName has become a pain in the neck for me and from what I read around, others are also facing issues with it.

When we give a GroupName, all radio buttons will belong to that group no matter which panel they are in etc, I dont know why an additional functionality was provided to limit this.

I have this:

  <ItemsControl.ItemTemplate>
                    <DataTemplate>

<RadioButton>

  </DataTemplate>

 <I/temsControl.ItemTemplate>
                  

This is how I generate radio buttons for a user control. When the user control is loaded it shows 3/4 radio buttons on it.

Now the problem is, when I give a group name, they all become part of one group. How do I give/generate group name so that I can differentiate the buttons from one user control to other?

Thank you.

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