Dear all,

I have a Datagrid which gets its column autogenerated from a data table.

What is the way to hide particular column from that datagrid. I do not want to remove the datcolomn from the binding source as I need to get that colomn in th results set but I simply need to hide it because it has no meaning for user, but internally it has.

The produce result is as below :

From that produce table, I need to hide columns name "RecordNb" and "PageCount"

The layout xaml is as below :

<DataGrid x:Name="gvParameterList"
						  VerticalContentAlignment="Center"
						  ItemsSource="{Binding}" IsReadOnly="True" SelectionMode="Single" SelectionUnit="FullRow"
						  SelectionChanged="gvParameterList_SelectionChanged"
						  FontSize="14"
						  CanUserReorderColumns="False"
						  CanUserResizeColumns="True"
						  CanUserResizeRows="False"
						  CanUserSortColumns="True"
						  GridLinesVisibility="None"
						  RowHeight="35"
						  ColumnHeaderStyle="{DynamicResource DatagridColumnHeaderCustomTemplateStyle}"><DataGrid.CellStyle><Style TargetType="DataGridCell"><Setter Property="Template"><Setter.Value><ControlTemplate TargetType="{x:Type DataGridCell}"><Grid Background="{TemplateBinding Background}"><ContentPresenter VerticalAlignment="Center" /></Grid></ControlTemplate></Setter.Value></Setter><Style.Triggers><DataTrigger Binding="{Binding RelativeSource={RelativeSource Self}, Path=Column.Status}" Value="0"><Setter Property="Background" Value="{Binding RelativeSource={RelativeSource Self}, Path=Content.Text, Converter={StaticResource  CellColorConverter}}"/></DataTrigger></Style.Triggers></Style></DataGrid.CellStyle></DataGrid>

Any idea how to do that ?

regarsd

Dear all,

I have the following Datagrid XAml layout :

<DataGrid x:Name="gvParameterList"
						  VerticalContentAlignment="Center"
						  ItemsSource="{Binding}" IsReadOnly="True" SelectionMode="Single" SelectionUnit="FullRow"
						  SelectionChanged="gvParameterList_SelectionChanged"
						  FontSize="14"
						  CanUserReorderColumns="False"
						  CanUserResizeColumns="True"
						  CanUserResizeRows="False"
						  CanUserSortColumns="True"
						  GridLinesVisibility="None"
						  RowHeight="35"
						  ColumnHeaderStyle="{DynamicResource DatagridColumnHeaderCustomTemplateStyle}"><DataGrid.CellStyle><Style TargetType="DataGridCell"><Setter Property="Template"><Setter.Value><ControlTemplate TargetType="{x:Type DataGridCell}"><Grid Background="{TemplateBinding Background}"><ContentPresenter VerticalAlignment="Center" /></Grid></ControlTemplate></Setter.Value></Setter><Style.Triggers><DataTrigger Binding="{Binding RelativeSource={RelativeSource Self}, Path=Column.Status}" Value="0"><Setter Property="Background" Value="{Binding RelativeSource={RelativeSource Self}, Path=Content.Text, Converter={StaticResource  CellColorConverter}}"/></DataTrigger></Style.Triggers></Style></DataGrid.CellStyle></DataGrid>

The Datgrid colomns are autogenerated from a datatable result querry from a database and produce the follwoing grid data :

What I am trying to reach, is to be able to change the template of the Column named Status . When the value of this colum is 0, I need to display a green square in the cell and if it is 1 I need to display a red square.

I have try different things but could not get through, What is the way to achieve this ?

regards

Hi to all,

I have a little program that has a ListView with a handful of columns.  I fill this ListView with data using bindings to a ObservableCollection.  It works great.  However, now I'd like to implement a sort on these columns in MVVM that would also display the up/down arrow on the column heading.  I thought I could bind a command to the column headings and simply sort the ObservableCollection in my ViewModel and this will automatically update the View.  However, how do I implement the up/down arrow beside the column heading without breaking MVVM?  I've seen implementations of this, but they use code-behind accessing elements of the View, something which I wanted to avoid.

Thanks,

MarcinMR

public partial class Window2 : Window
    {
        public eNumbers Tag { get; set; }

        public Window2()
        {
            InitializeComponent();

            ComboBoxItem cbo = null;

            Tag = eNumbers.Two;
            Array ord = Enum.GetValues(typeof(eNumbers));
            foreach (var item in ord)
            {
                cbo = new ComboBoxItem();
                cbo.Content = item;
                cbo.Tag = (eNumbers)item;
                if ((eNumbers)item == eNumbers.Three) cbo.IsEnabled = false;
                comboBox1.Items.Add(cbo);
            }

            DataContext = this;
        }

    }

  public enum eNumbers
    {
        One,
        Two,
        Three,
        Four
    }

<Window x:Class="TestDxControls.Window2"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
       xmlns:local="clr-namespace:TestDxControls"    ContentRendered="Window_ContentRendered"
        Title="MainWindow" Height="350" Width="525"><Grid Height="130" Width="316"><ComboBox Height="23" HorizontalAlignment="Left" SelectionChanged="comboBox1_SelectionChanged"
        Margin="78,12,0,0" Name="comboBox1" SelectedValuePath="Tag" SelectedValue="{Binding Tag}"
        VerticalAlignment="Top" Width="120" Background="Bisque" Foreground="Black"></ComboBox></Grid></Window>

Hi,

Please find the above code, Binding is not working in WPF ComboBoxItem.

Note: Please don't use ItemsSource Property.

Regards

Ahmed

Ahmed

The results for September's TechNet Guru competition have been posted!

http://blogs.technet.com/b/wikininjas/archive/2015/10/19/the-microsoft-technet-guru-awards-september-2015.aspx

Below is a summary of the medal winners for September. The last column being a few of the comments from the judges.

Unfortunately, runners up and their judge feedback comments had to be trimmed from THIS post, to fit into the forum's 60,000 character limit, however the full version is available on TechNet Wiki.

Some articles only just missed out, so we may be returning to discuss those too, in future blogs.
 

BizTalk Technical Guru - September 2015

Forefront Identity Manager Technical Guru - September 2015

Also worth a mention were the other entries this month:

• FIM 2010 & MIM2016: Virtualisation support byPeter Geelen - MSFT   
  Søren Granfeldt: "Another great article Peter"  
  Ed Price: "Great use of links for readers to dig deeper!"

Microsoft Azure Technical Guru - September 2015

Also worth a mention were the other entries this month:

• Azure Active Directory integration with Salesforce 'Sandbox' bySamir Farhat       
  JH: "Haven't worked with Salesforce yet, but the steps are explained in a good detail."   
  Ed Price: "Good job with the images, and the table is incredibly useful! I love having setting broken down like that in a clear way."
• Microsoft Azure Redis Cache - Implementation of a service to work cache data by João Sousa
  JH: "Short intro. Needs some more explanations and detailed code snippets."   
  Ed Price: "Fantastic topic! Great formatting on the code snippets!"
• Full Home Automation with Azure & Voice Assistance using Intel Galileo Gen 1 & Windows 10 by Rishabh Banga
  JH: "Is already present in the "Universal Windows Apps" section"   
  Ed Price: "Cool and fun topic! Good job on this. This one got judged in the "Universal Windows Apps" category instead. Please only submit each article into one category."
• Microsoft Azure - Create Cloud Service with specific .NET Framework by João Sousa
  JH: "Seems to be mostly the same as https://azure.microsoft.com/en-us/documentation/articles/cloud-services-dotnet-install-dotnet/" 
  Ed Price: "Great to have the images and code!"

Miscellaneous Technical Guru - September 2015

Also worth a mention were the other entries this month:

• Unity 3D Game Creation Using C# Script bySYED SHANU
  Richard Mueller: "Good images but the explanation wasn't clear to me. Also, check out the Wiki Guidelines Wiki for pointers."
  Durval Ramos: "This article awake curiosity, was well illustrated and has "See Also" section."
• Getting started with Microsoft ASP.NET WebHooks Preview byGaurav Kumar Arora
  Durval Ramos: "This article is interesting, but needed to be done to facilitate learning. e.g: TOC, images, samples,... A good start."
  Richard Mueller: "A new technology. Grammar needs work and the explanation can be improved."
• An idea to add SQL Like Functionality in LINQ by Gaurav Kumar Arora
  Durval Ramos: "This feature is very useful and has a code easier to understand "how to do", but need to add images and References."
  Richard Mueller: "A good idea. Short and sweet."

SharePoint 2010 / 2013 Technical Guru - September 2015

Also worth a mention were the other entries this month:

• SharePoint site down "An application error occurred on the server" web.config error by Inderjeet Singh Jaggi
  Ashutosh Singh: "Needs tidy and more"
  TN: "This error can be caused by many reasons."

Small Basic Technical Guru - September 2015

SQL BI and Power BI Technical Guru - September 2015

Also worth a mention were the other entries this month:

• SSRS: Join data from different SSRS data sources into data set by sergey vdovin
  PT: "At first I had mixed feelings about promoting these techniques as a best practice, given the level of complexity. However your approach to this challenging problem well executed and clearly explained. Thank you for posting this useful information."
  RB: "Not much information here, apart from link to github projects"
  OT:"I personally don´t see any greater benefit in writing a separate article and referring an already existing one without pointing out really new stuff. The old one is pretty good and although the author does not get much love updating this, he should in order to have the thing in one place."
  AN: "The content is not complete and the "Solution" section was written in another article. This article's very confused."

SQL Server General and Database Engine Technical Guru - September 2015

System Center Technical Guru - September 2015

Transact-SQL Technical Guru - September 2015

Universal Windows Apps Technical Guru - September 2015

Visual Basic Technical Guru - September 2015

Visual C# Technical Guru - September 2015

Also worth a mention were the other entries this month:

• MVC Web API And AngularJS: Are You Genius Game bySYED SHANU
  Carmelo La Monica: "Interesting, i don't have experience on Asp.Net, but article very interesting, good image and code snippet."
  Jaliya Udagedara: "Explains a specific application. Love the fact that a lot of images is used and sample code is available to download which helps the readers. A bit of article formatting is needed."
• Little More Information On Casting and Type Checking in C# byIsham Mohamed
  Jaliya Udagedara: "Explains the topic of the article in detail. If we can have little bit of formatting in the article, then it will be perfect."
  Carmelo La Monica: "Sometime is a problem for casting Object, but with this article we can to understand how to convert correctly an object or variable. Congrats!"
• ASP.NET MVC HangFire - Execute Jobs in Background using SQLServer by João Sousa
  Jaliya Udagedara: "I would rather change the title of the article to “Configure Hangfire in an ASP.NET MVC Application”, because that is what explained in the article. Good job!"
  Carmelo La Monica: "Great content, and useful image and code snippet. Congratulations!"
• MVC Web API and Angular JS For Word Puzzle Game bySYED SHANU
  Carmelo La Monica: "Same comment for MVC Web API And AngularJS: Are You Genius Game. Congratulations!"
  Jaliya Udagedara: "Explains a specific application. Love the fact that a lot of images is used and sample code is available to download which helps the readers. A bit of article formatting is needed."

Wiki and Portals Technical Guru - September 2015

Windows PowerShell Technical Guru - September 2015

Windows Presentation Foundation (WPF) Technical Guru - September 2015

Windows Server Technical Guru - September 2015

As mentioned above, runners up and comments were removed from this post, to fit into the forum's 60,000 character limit.

You will find the complete post, comments and feedback on the main announcement post.

Please join the discussion, add a comment, or suggest future categories.

If you have not yet contributed an article for this month, and you think you can write a more useful, clever, or better produced wiki article than the winners above, here's your chance! :D

Best regards,
Pete Laker

More about the TechNet Guru Awards:

• TechNet Guru Competitions

#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 toTechNet Wiki, for future generations to benefit from! You'll never get archived again, and you could win weekly awards!

Have you got what it takes o become this month's TechNet Technical Guru? Join a long list of well known community big hitters, show your knowledge and prowess in your favoured technologies!

Hello. I need some help with a small

        private bool OnSave(bool val)
        {
            bool _success = true;
             if(val == true)
                 return _success;
             else
             {
                 _success = false;
                 return _success;
             }
        }

        private void cb_emp_hist_Click(object sender, EventArgs e)
        {
            if(cb_emp_hist.IsChecked.Value)
                OnSave(true);
            else
                OnSave(false);
        }

problem. I have a button that brings data from SQL to a datagrid and a checkbox. If the checkbox is checked I should bring data with a condition (WHERE fld_status = 0). But I dont know how can I transfer the checkbox click event to the button.

Can you please help me? Here is what the code I already have, and from here I dont know how to receive data from Onsave to the button click event.

Hi,

In Window Server 2012 WPF check box default behavior is differnt from Winsow 7. I win7 if I apply foreground colour in check box then it apply only on check box caption colour but in window 2012 it apply on caption color and check colour so due to this if I set foreground white then checkbox does not display checkecd in server 2012 while it is checked. I know the solution but i want to figure out this is bug or feature or missing somthing in sever 2012, Please guide me I need help urgently. Thanks in advance.

Thanks,

Anil

Hi everybody,

I'm working on a application C#/WPF (.NET 4.5) that implements Ribbon controls.

But there are 2 things I could not implement. I'd like to have a control in a ribbon toolbar similar to the Word style selector :

And the other control I'd like to implement is a button like the one we have at the bottom-right corner of each RibbonGroup :

Do you know if that is possible natively ? and how ?

Thanks in advance for your help

I have animated an object along a path using blend storyline. I am animating its X coordinate of the object such that it moves in a straight line between two images. The entire placement is done on a grid where left image is bound to left margin and right image is bound to right margin so that when window is resize the images move accordingly. PFB the code :

<UserControl.Resources><Storyboardx:Key="LineAnimation"RepeatBehavior="Forever"><DoubleAnimationUsingKeyFramesStoryboard.TargetProperty="(UIElement.RenderTransform).(TransformGroup.Children)[3].(TranslateTransform.X)"Storyboard.TargetName="path"><EasingDoubleKeyFrameKeyTime="0"Value="0"/><EasingDoubleKeyFrameKeyTime="0:0:4"Value="462.545"/></DoubleAnimationUsingKeyFrames></Storyboard></UserControl.Resources><GridHeight="0"Width="784.001"><Pathx:Name="path"Fill="#FFF4F4F5"HorizontalAlignment="Left"Height="15.073"Stroke="Black"VerticalAlignment="Top"Data="M0.55429077,0.50088078 C0.56195831,0.50516075 0.56729126,0.523664 0.56729126,0.52366364 29.662338,1.36954 29.320824,1.031827 29.320824,1.0318269 29.320618,14.573003 29.320824,14.573003 29.320824,14.573003 1.0815125,13.726863 1.0815125,13.726863 1.0815125,13.726862 0.33274078,1.1378824 0.50061798,0.47091863 0.55429077,0.50088078 z M35.375294,0.5008778 C35.382957,0.50515866 35.388294,0.52366197 35.388294,0.52366215 64.483337,1.3695344 64.141821,1.0318248 64.141821,1.0318255 64.141616,14.573002 64.141821,14.573002 64.141821,14.573003 35.902512,13.726866 35.902512,13.726866 35.902512,13.726865 35.153748,1.1378781 35.321621,0.47091594 35.375294,0.5008778 z M70.196289,0.50087637 C70.203955,0.50515676 70.209291,0.52366006 70.209291,0.52366072 99.304325,1.3695328 98.962814,1.031823 98.962814,1.0318225 98.962606,14.572999 98.962814,14.572999 98.962814,14.572999 70.723519,13.726864 70.723519,13.726864 70.723518,13.726864 69.974748,1.1378755 70.142621,0.47091386 70.196289,0.50087637 z"Stretch="Fill"Width="99.463"RenderTransformOrigin="0.5,0.5"Margin="92.585,84.488,0,-99.561"><Path.LayoutTransform><TransformGroup><ScaleTransform/><SkewTransform/><RotateTransform/><TranslateTransform/></TransformGroup></Path.LayoutTransform><Path.OpacityMask><LinearGradientBrushEndPoint="0.5,1"StartPoint="0.5,0"><GradientStopColor="Black"Offset="0"/><GradientStopColor="White"Offset="1"/></LinearGradientBrush></Path.OpacityMask><Path.RenderTransform><TransformGroup><ScaleTransform/><SkewTransform/><RotateTransform/><TranslateTransform/></TransformGroup></Path.RenderTransform></Path><Imagex:Name="image1"Height="192.829"Source="/HackingHttp_Get2;component/Images/server1.png"Stretch="Fill"VerticalAlignment="Center"HorizontalAlignment="Right"Width="171"ScrollViewer.HorizontalScrollBarVisibility="Auto"Margin="0,2.259,54.401,-195.088"/><ImageSource="/HackingHttp_Get2;component/Images/computer.png"Stretch="Fill"Margin="3.44,8.054,610.763,-197.568"/><TextBlockTextWrapping="Wrap"Text="Hitting Server"FontSize="18.667"RenderTransformOrigin="0.5,0.5"Margin="33.8,62.953,637.221,-87.783"><TextBlock.RenderTransform><TransformGroup><ScaleTransform/><SkewTransform/><RotateTransformAngle="-9.503"/><TranslateTransform/></TransformGroup></TextBlock.RenderTransform></TextBlock></Grid>

What I would like to do is scale the X coordinate in the animation ,instead of fixed value, so that when the window size changes the animation changes it proportions as well, adapting to that of the window. Something like this :

<UserControl.Resources><Storyboardx:Key="LineAnimation"RepeatBehavior="Forever"><DoubleAnimationUsingKeyFramesStoryboard.TargetProperty="(UIElement.RenderTransform).(TransformGroup.Children)[3].(TranslateTransform.X)"Storyboard.TargetName="path"><EasingDoubleKeyFrameKeyTime="0"Value="{Binding to image1 right position}"/><EasingDoubleKeyFrameKeyTime="0:0:4"Value="{Binding to image2 left position}"/></DoubleAnimationUsingKeyFrames></Storyboard></UserControl.Resources>

I know there is Viewbox that does the resizing , but when we use the same, it resizes the images on window instead of scaling the animation thus giving the illusion .

Simply put, I would like my animation to scale according to the size of the Window. Is there a way to achieve this ?

The DataGrid foreground is loosing color after i enter the data and press TAB or ENTER keys.

What needs in XAML to fix this?

<UserControl.Resources><Style x:Key="DataGridRowStyle" TargetType="DataGridRow"><Style.Triggers><DataTrigger Binding="{Binding IsNewRecord,Mode=TwoWay}" Value="True"><Setter Property="Background" Value="Green"/><Setter Property="Foreground" Value="White"/></DataTrigger></Style.Triggers></Style></UserControl.Resources><Grid Background="Transparent" Margin="0,22,0,23" Height="250"><DataGrid  x:Name="ViewDataGrid" ItemsSource="{Binding IData, Mode=TwoWay}" Margin="0,0,0,10" RowStyle="{StaticResource DataGridRowStyle}"
                   HeadersVisibility="None" AutoGenerateColumns="False" RowHeaderWidth="0" ClipToBounds="True" HorizontalScrollBarVisibility="Disabled"><i:Interaction.Behaviors><cls:ScrollIntoViewBehavior/></i:Interaction.Behaviors><DataGrid.Resources><SolidColorBrush x:Key="{x:Static SystemColors.InactiveSelectionHighlightBrushKey}" Color="DarkGray"/><Style TargetType="DataGridCell"><Setter Property="ToolTip"><Setter.Value><StackPanel><TextBlock Text="{Binding ItemA}" /><TextBlock Text="{Binding ItemB}" /></StackPanel></Setter.Value></Setter><!--<Setter Property="Foreground" Value="Black"/>--></Style></DataGrid.Resources><DataGrid.Columns><DataGridTextColumn Binding="{Binding ItemA}" Width="152"/><DataGridTextColumn Binding="{Binding ItemB}" Width="153"/></DataGrid.Columns></DataGrid></Grid></UserControl>

  public CaseData()
        {
            _selectedDataRow = new CaseDataItem();
            InitializeComponent();
        }

        [InjectionConstructor]
        public ViewData(ICaseDataViewModel viewModel)
            : this()
        {
            DataContext = viewModel;
            DispatcherTimer timer = new DispatcherTimer();
            timer.Tick +=new EventHandler(timer_Tick);
            timer.Interval = TimeSpan.FromSeconds(2);
            timer.Start();
        }

        private void timer_Tick(object sender, EventArgs e)
        {
            ViewDataGrid.RowBackground = new SolidColorBrush(Colors.Transparent);
            var cellStyle = new Style { TargetType = typeof(DataGridCell) };
            cellStyle.Setters.Add(new Setter(ForegroundProperty, Brushes.Black));
        }
     

Also the Dispatcher foreground cell color property in the code behind is not working

documentViewer1.Document =
                                ConvertToXPSDoc(newXPSDocumentName, newXPSDocumentName).GetFixedDocumentSequence();



private XpsDocument ConvertToXPSDoc(string wordDocName, string xpsDocName)
{
    try
    {

        XpsDocument xpsDoc = new XpsDocument(xpsDocName, System.IO.FileAccess.Read);
        return xpsDoc;
    }
    catch (Exception exp)
    {
        string str = exp.Message;
    }
    return null;
}

Dear all,

We are trying to build an application which is based on sharing ideas betwen different person on the same windows area.
The application will run on a big table touch and idea is to bring to users collaborative user interface on placing ideas on a project.

The starting point is a floor plan of a house from Arhichitect and then people around the table discuss all together and interface around the table on this floor plan.

We have implement the possibility for instance for users to be able to draw some information on the floor by using an InkCanvas on top of the floor plan picture.

The next steps we try to reach is to be able to place some note the user can place on the working area by dragging or droping.

Quite similar effect that we can see on Microsoft OneNote.

What is the way to create and place those kind of information on the Inkcanvas, that we can freely move at any position ?

Thnaks for your advise

regards

Dear all,

We are trying to implement NFC feature in one of our application.

The issue we met is that we have no problem to find out reader or writer device, but for interfacing with the device we do not want to be dependant of the NFC brand or device tye, simply because in some situation we cannot impose a particular device to final customer.

Does some of you have already implement such device in WPF application and if yes in which way the communication with the device was done ?

- Device SDK or any kind of generic c# open library around ?

Thanks for sharing

Regards

Dear all,

We have a given picture of any kind that we display as the main background in a WPF application.

From that picture, we would like to be able to drawn an closed area on this picture which then represent a kind of layer.

At that time , user can select this area and fill all this area with a color.

Imagine for instance a house plan, where we have rooms represented. Then we have different color on the application where user can select and paint specific area of the plan, like painting the bedroom floor with a pattern.

The issue is that we do not have in advance the floor plan, which can change based on customers. So we try to generate directly those area with touch what ever the picture is.

What is the way from a given picture to slice it in different layer shape which can then be a separate object ?

Thanks for advise or sample

regards

Hello, 
Im getting an exeption when trying to Invoke an action. Im trying to update a Paragraph object. 
Here is the code which suppose to update the Paragaph but fails to do it: 

Run r = new Run((string)name + Environment.NewLine);
r.Foreground = Brushes.Green;
Dispatcher.Invoke(new Action(() => { currentlyOnlineParagraph.Inlines.Add(r); }), DispatcherPriority.Normal);

But im getting this error: 

An unhandled exception of type 'MS.Internal.PtsHost.UnsafeNativeMethods.PTS.SecondaryException' occurred in PresentationFramework.dll

Im not even sure that the error occures in that code section, but when I remove it the program works fine, so I assumed it was the problem. 
Heres a screenshot of the problem: http://prntscr.com/8xxfdc

public void InsertImageTool_Click(object sender, System.EventArgs e)
        {
            OpenFileDialog openFile = new OpenFileDialog();
            openFile.Title = "RTE - Insert Image File";
            openFile.DefaultExt = "rtf";
            openFile.Filter = "Bitmap Files|*.bmp|JPEG Files|*.jpg|GIF Files|*.gif";
            openFile.FilterIndex = 1;
            openFile.ShowDialog();

            if (openFile.FileName == "")
            {
                return;
            }

            try
            {
                string strImagePath = openFile.FileName;
                Image img;
                img = Image.FromFile(strImagePath);
                Clipboard.SetDataObject(img);
                DataFormats.Format df;
                df = DataFormats.GetFormat(DataFormats.Bitmap);
                if (this.richTextBox1.CanPaste(df))
                {
                    this.richTextBox1.Paste(df);
                }
            }
            catch
            {
                MessageBox.Show("Unable to insert the image format selected.", "RTE - Paste");
            }
        }

I created a class that inherits Canvas, and overriden ArrangeOverride() to position elements based on some new attached properties in addition to Canvas.Left and Canvas.Top

However, when I drag child elements in the WPF designer (Blend or Visual Studio / Cider), it attempts to set Canvas.Left and Top to values that would constitute to a correct position have I not implemented custom positioning rules. This leads to child control jumping to an incorrect position the moment I start dragging it.

So supposedly I need to tell WPF how to convert onscreen coordinates back to property values, but how do I do that?

I understand how to create and register a design-time helper assembly, and looked through tutorials on implementing custom adorners, but was unable to find a way to influence an existing built-in sizing/moving adorner of the designer.

Any clues, urls, books, etc. are welcome -- I've been searching for weeks with no results!

Please do not suggest RenderTransform -- it works, but leads to other glitches with the designer -- however that's a topic for another question

I have a user control for my StatusBar which reads settings for a file and loads the data (including a database connection).
The problem is that I want to load a second user control that reads for the database using the connection information in the first user control. Therefore, I want the second usercontrol to only load one the first has loaded the database information (Server, Database etc) and ensured the connection is available.

How do you only load the second control once the first has completely finished loading?

Thanks

I created a class that inherits Canvas. I would like to be able to rotate and translate children from my canvas' code without affecting Canvas.Left, Canvas.Top and ArrangeOverride()

All tutorials about rotation I found suggest setting children' RenderTransform property from the code, which works in runtime, but WPF designer (Expression Blend and Visual Studio / Cider) tends to overwrite it:

1) if a child control's right resize thumb is accidentally dragged beyond the left border (and vice versa), reversing the control, designer creates a rendertransform to apply ScaleX=-1

2) if I accidentally rotate the control

3) if I accidentally drag rotation center thumb from its default position

4) if I manually set RenderTransform for any reason

This replaces the TransformGroup I assigned to the control with what was serialized from newly generated XAML, which means I need to either create a brand new TransformGroup every time the control is updated (not good for performance) or try to somehow check if my group was replaced or altered.

Both options do not work reliably, which leads to design-time position to be different from runtime one until all RenderTransfrom properties are deleted from XAML code and the design window is closed and opened again.

The best I could do is to throw an exception if an unwanted change of RenderTransform is detected, prompting to fix the problem with Ctrl+Z, but even that sometimes leaves the control in glitched state for some strange reason.

Other people also get very confused when they rotate anything inside my canvas the way they are used to.

So the question is: is there a way to apply a Transform without affecting RenderTransformProperty from canvas's code? Such as from OnRender(), probably? Or somehow access protected Visual.Transform of a child element?

Any clues would be appreciated.

Dear all,

I was wondering if it is possible to have different Ink attribute on the same inKCanvas ?

Scenario that I imagine is the following :

Lets say we have a big multitouch screen where we have a white bacground representing a drawing paper.

Then at each side of the paper we have 4 kids that they would like to draw all together a great painting.

SO idea is that is it possible that Kids1 select Green color and Kids 2 seleect Red color and both of them paint respectivly in green and red on same board ?

We have a screen which support 60 multitouch point so that is a real scenario

regards