I'm trying to provide a "formula editor" for an in-house application.  I'm trying out the Expression Editor to see if it will work for what we want ... notably, the list of fields available for to be used in a formula will be determined at run-time depending on the application state/context.

I haven't done very much with WPF, so just to get my feet wet, I followed the instructions in the "Getting Started" help topic to create a small app that uses the Expression Editor (with a grid view).

I then created an almost identical sample app that uses the Expression Editor without a Grid View. 
Since the field list will be "dynamic" I'm using an ExpandoObject as the view model, as described in this forum post.  And in fact the ExpandoObject properties do show up in the field list. 
However, the expression always seems to be invalid ... even for simple expressions like "Qty_1 * Unit_Price_1". 
Again, this is almost all identical to the previous iteration ... except that now I don't have a data grid, and I'm generating the "property bag" dynamically. Do I have to use the editor in conjunction with a RadGridView?  Or is it the dynamic properties that are the problem?


Here's my model:

        <PRE>
public class FormInfoModel
{
     public IDictionary<string, object> Elements
     {
         get { return _elements; }
     }
     private IDictionary<string, object> _elements;
     public FormInfoModel()
     {
         _elements = new Dictionary<string, object>();
         _elements.Add("Order_Date", DateTime.Today);
         _elements.Add("Qty_1", 0);
         _elements.Add("Unit_Price_1", 0);
     }
}
</PRE>

...and the view model:

Then in the MainWindow constructor I set the binding programmatically:

 

We have these two error in VS output window, and we cannot find any "OffPostion" within our entire solution, then we looked into the RadControl source code we purchased, and found there is "OffPostion" property in Telerik.Windows.Controls.Gauge.IndicatorData.  Could you please look into it?

System.Windows.Data Error: 40 : BindingExpression path error: 'OffPostion' property not found on 'object' ''BarIndicator' (Name='TrackBar')'. BindingExpression:Path=OffPostion; DataItem='BarIndicator' (Name='TrackBar'); target element is 'IndicatorData' (HashCode=46355463); target property is 'OffPostion' (type 'Double')

System.Windows.Data Error: 40 : BindingExpression path error: 'OffPostion' property not found on 'object' ''Marker' (Name='CurrentFrameMarker')'. BindingExpression:Path=OffPostion; DataItem='Marker' (Name='CurrentFrameMarker'); target element is 'IndicatorData' (HashCode=15234483); target property is 'OffPostion' (type 'Double')

I'm using the RadGridView inside a RadPane and trying to drag a row to another grid in a different pane. If the pane is pinned it works perfectly but when the pane is not pinned I get the following error as soon as I start dragging:

System.InvalidOperationException was unhandled by user code
  Message=The specified Visual and this Visual do not share a common ancestor, so there is no valid transformation between the two Visuals.
  Source=PresentationCore
  StackTrace:
       at System.Windows.Media.Visual.TransformToVisual(Visual visual)
       at Telerik.Windows.Controls.DragDrop.DragDropProvider.OnDragInitialized(Object sender, DragInitializeEventArgs e) in c:\TB\117\WPF_Scrum\Release_WPF\Sources\Development\Core\Controls\DragDrop\DragProviders\DragDropProvider.cs:line 60
       at Telerik.Windows.DragDrop.DragInitializeEventArgs.InvokeEventHandler(Delegate genericHandler, Object genericTarget) in c:\TB\117\WPF_Scrum\Release_WPF\Sources\Development\Core\Controls\DragDropManager\DragInitializeEventArgs.cs:line 95
       at System.Windows.RoutedEventArgs.InvokeHandler(Delegate handler, Object target)
       at System.Windows.EventRoute.InvokeHandlersImpl(Object source, RoutedEventArgs args, Boolean reRaised)
       at System.Windows.UIElement.RaiseEventImpl(DependencyObject sender, RoutedEventArgs args)
       at Telerik.Windows.DragDrop.DragInitializer.StartDrag() in c:\TB\117\WPF_Scrum\Release_WPF\Sources\Development\Core\Controls\DragDropManager\DragInitializer.cs:line 173
       at Telerik.Windows.DragDrop.DragInitializer.DragSourcePreviewMouseMove(Object sender, MouseEventArgs e) in c:\TB\117\WPF_Scrum\Release_WPF\Sources\Development\Core\Controls\DragDropManager\DragInitializer.cs:line 157
       at System.Windows.RoutedEventArgs.InvokeHandler(Delegate handler, Object target)
       at System.Windows.EventRoute.InvokeHandlersImpl(Object source, RoutedEventArgs args, Boolean reRaised)
       at System.Windows.UIElement.RaiseEventImpl(DependencyObject sender, RoutedEventArgs args)
       at System.Windows.UIElement.RaiseEvent(RoutedEventArgs args, Boolean trusted)
       at System.Windows.Input.InputManager.ProcessStagingArea()
       at System.Windows.Input.InputManager.ProcessInput(InputEventArgs input)
       at System.Windows.Input.InputProviderSite.ReportInput(InputReport inputReport)
       at System.Windows.Interop.HwndMouseInputProvider.ReportInput(IntPtr hwnd, InputMode mode, Int32 timestamp, RawMouseActions actions, Int32 x, Int32 y, Int32 wheel)
       at System.Windows.Interop.HwndMouseInputProvider.FilterMessage(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled)
       at System.Windows.Interop.HwndSource.InputFilterMessage(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled)
       at MS.Win32.HwndWrapper.WndProc(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled)
       at MS.Win32.HwndSubclass.DispatcherCallbackOperation(Object o)
       at System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Boolean isSingleParameter)
       at System.Windows.Threading.ExceptionWrapper.TryCatchWhen(Object source, Delegate callback, Object args, Boolean isSingleParameter, Delegate catchHandler)
  InnerException:

I'm stumped as to how go about fixing this so any help would be appreciated!

-Gary

Hi Support Team,

I am using the following Way to do. Steps are following:

1. I create a new Column Group and Added a label and stack panel with 4 buttons and place all of them in Grid like following  in the code and finally assigned that grid into Header Template of RadGridView property.

<DataTemplate

xmlns=""http://schemas.microsoft.com/winfx/2006/xaml/presentation""

xmlns:x=""http://schemas.microsoft.com/winfx/2006/xaml""

xmlns:Tele=""http://schemas.telerik.com/2008/xaml/presentation""

xmlns:Event=""clr-namespace:System.Windows.Interactivity;assembly=System.Windows.Interactivity""

xmlns:cmd=""clr-namespace:GalaSoft.MvvmLight.Command;assembly=GalaSoft.MvvmLight.Extras.WPF4"" >

<Grid HorizontalAlignment=""Stretch"" VerticalAlignment=""Stretch"" Background=""#EAF3FC"" Name=""grdcolumnHeader2"" >

<Grid.RowDefinitions>

<RowDefinition Height=""23""></RowDefinition>

</Grid.RowDefinitions>

<Grid.ColumnDefinitions>

<ColumnDefinition Width=""*""></ColumnDefinition>

<ColumnDefinition Width=""Auto""></ColumnDefinition>

</Grid.ColumnDefinitions>

<Label Name=""lblMonthName"

 

 

+ groupIndex.ToString() + @""" Grid.Row=""0"" Grid.Column=""0"" HorizontalAlignment=""Stretch"" HorizontalContentAlignment=""Center"" Padding=""0"" Margin=""0,2,0,0"" FontWeight=""DemiBold""

Content="""

 

 

+ monthContent + @"""></Label>

</Grid>

</DataTemplate>";

2. After creating new column Group, adding it into RadGridView like following and assigned it name like "month1"
RadGridView1.ColumnGroups.add(newColumnGroup);
3. the created dynamic columns based on no of days in a months and assigned column group name "month1"

newcolumn.ColumnGroupName="month1";

RadGridView1.Columns.Add(newcolumn);

This functionality works fine in version 2011 Q3 and 2012 Q2 releases.

But my issues is when I use 2012 Q2 version of telerik controls the Label controls and Panel with 4 buttons in the Colum Group Header does not cover all the columns and leave black color space at right side columns. screen shot has been attached with this thread. Please have a look and provide solution.

Note: If you do not understand anything please let me know. I will explain further.
Please help me to resove this issue. I am running out of solution.

Thanks
Laxman

 

 

 

Hi Support Team,

I would like to change the background color of GroupPanel items, by default it shows black color. I would like to change it to different color as per customer requirement. An Image has been attached for your better understanding.

Thanks
Laxman

Hi Support Team,

I want to remove borders from Grid View Header Row. I am using the following style to set the Background, Foreground and BorderThickness that style is following:

Style x:Key="GridHeaderRowStyle" TargetType="Tele:GridViewHeaderRow">
                        <Setter Property="Background" Value="#EAF3FC"/>
                        <Setter Property="Foreground" Value="#EAF3FC"/>
                        <Setter Property="BorderBrush" Value="#EAF3FC"/>
                        <Setter Property="BorderThickness" Value="0,0,0,0"/>
                        <Setter Property="Padding" Value="0,0,0,0"/>
                        <Setter Property="Margin" Value="0,0,0,0"/>
                       
                    </Style>
It changes the BackGround color but did not removing Borders. Image has been attached for your reference. You can have a look.
Please provide me the style how to do that. I don't know Expression Blend how to create styles.

Hope someone will help me to solve this issue.

Thanks
Laxman

Hello,


We are using 2012 Q3
I am AutoGenerating columns from a datatable to populate a RadGridView.

In the table there are columns who's DataType is a tuple with a couple strings, defined as "characteristic columns".

I tried setting the cell template using the following code,

        private void OneStopGrid_DataLoaded(object sender, EventArgs e)
        {
            foreach (GridViewColumn column in OneStopGrid.Columns)
            {
                if (ViewModel.CharacteristicColumns.Any(c => c.Name == column.Header))
                {
                    column.CellTemplate = (DataTemplate)this.FindResource("HistoryTemplate");
                }
            }
        }

The history template is a stackpanel containing a textblock which basically binds to one of the strings using Text="{Binding Item1}", and a rectangle which is standing in for a button.

The cell template is correctly set, but the datacontext is wrong, when I set the binding to Text="{Binding}" it showed that in the cells the datacontext was the DataRow.

I looked on the forums and found

http://www.telerik.com/community/forums/wpf/gridview/programmatically-creating-templated-columns.aspx

which advised me to to go to

http://blogs.telerik.com/vladimirenchev/posts/10-05-13/how-to-custom-percentage-column-with-radgridview-radprogressbar-and-radslider-for-silverlight-and-wpf.aspx

I set up a custom column as recommended and overrode the CreateCellElement using the following code


Then I used the ColumnsGenerating event to set up the columns as my custom column

        private void OneStopGrid_AutoGeneratingColumn(object sender, GridViewAutoGeneratingColumnEventArgs e)
        {
            if (ViewModel.CharacteristicColumns.Any(c => c.Name == e.Column.Header))
            {
                var templateColumn = new GridViewCharacteristicColumn();
                templateColumn.Header = e.Column.Header;

                e.Column = templateColumn;
            }
        }

Unfortunately I am still having the same problem. The Context is still the DataRow.

Anything I can do to get the binding to work correctly?


Thank you.

I try to do this by using this Thread's Posts but when I Paste Some text contain hyperlink in my RadRichTextBox , It shows the hyperlinks as usual way and doesn't remove Its styles and etc.
I Want remove any styles, Images, Tables, Bullets, etc of document's content like when paste Clipboard in TextBox.

Hi,

I seem to get a NullReferenceException from time to time when I assisigning the ScrollBarValueChanged event. It doesn't always throw the exception, and I can't quite work out how this is happening.


I assigned it in my RadRichTextbox loaded event:



Here's the stack trace:

   at TAS2.RadRichTextBoxAutoComplete.radRichTextBox_Loaded(Object sender, RoutedEventArgs e) in C:\TAS2 - Q3 2012\TAS2\RadRichTextBoxAutoComplete.xaml.cs:line 195
   at System.Windows.RoutedEventHandlerInfo.InvokeHandler(Object target, RoutedEventArgs routedEventArgs)
   at System.Windows.EventRoute.InvokeHandlersImpl(Object source, RoutedEventArgs args, Boolean reRaised)
   at System.Windows.UIElement.RaiseEventImpl(DependencyObject sender, RoutedEventArgs args)
   at System.Windows.UIElement.RaiseEvent(RoutedEventArgs e)
   at System.Windows.BroadcastEventHelper.BroadcastEvent(DependencyObject root, RoutedEvent routedEvent)
   at System.Windows.BroadcastEventHelper.BroadcastLoadedEvent(Object root)
   at System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Int32 numArgs)
   at MS.Internal.Threading.ExceptionFilterHelper.TryCatchWhen(Object source, Delegate method, Object args, Int32 numArgs, Delegate catchHandler)
   at System.Windows.Threading.DispatcherOperation.InvokeImpl()
   at System.Windows.Threading.DispatcherOperation.InvokeInSecurityContext(Object state)
   at System.Threading.ExecutionContext.runTryCode(Object userData)
   at System.Runtime.CompilerServices.RuntimeHelpers.ExecuteCodeWithGuaranteedCleanup(TryCode code, CleanupCode backoutCode, Object userData)
   at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state)
   at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean ignoreSyncCtx)
   at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
   at System.Windows.Threading.DispatcherOperation.Invoke()
   at System.Windows.Threading.Dispatcher.ProcessQueue()
   at System.Windows.Threading.Dispatcher.WndProcHook(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled)
   at MS.Win32.HwndWrapper.WndProc(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled)
   at MS.Win32.HwndSubclass.DispatcherCallbackOperation(Object o)
   at System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Int32 numArgs)
   at MS.Internal.Threading.ExceptionFilterHelper.TryCatchWhen(Object source, Delegate method, Object args, Int32 numArgs, Delegate catchHandler)
   at System.Windows.Threading.Dispatcher.InvokeImpl(DispatcherPriority priority, TimeSpan timeout, Delegate method, Object args, Int32 numArgs)
   at MS.Win32.HwndSubclass.SubclassWndProc(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam)
   at MS.Win32.UnsafeNativeMethods.DispatchMessage(MSG& msg)
   at System.Windows.Threading.Dispatcher.PushFrameImpl(DispatcherFrame frame)
   at System.Windows.Threading.Dispatcher.PushFrame(DispatcherFrame frame)
   at System.Windows.Application.RunDispatcher(Object ignore)
   at System.Windows.Application.RunInternal(Window window)
   at System.Windows.Application.Run(Window window)
   at System.Windows.Application.Run()
   at TAS2.App.Main() in C:\TAS2 - Q3 2012\TAS2\obj\x86\Debug\App.g.cs:line 0



System.Reflection.RuntimeMethodInfo:
{Void radRichTextBox_Loaded(System.Object, System.Windows.RoutedEventArgs)}


Has anyone come across this error before?

Thanks for your time,

Rob

Hello,

I'm looking for a way to disable the default Ctrl+V behavior, which simply creates a blank appointment (bypassing all validation).  I tried defining my own command bindings to override the default behavior as exemplified in the sample project included in this post  http://www.telerik.com/community/forums/silverlight/scheduleview/copy-paste-appointment.aspx;  however, I cannot find the appropriate namespace for CommandManager.SetCommandBindings().  System.Windows.Input.CommandManager does not contain a definition for SetCommandBindings, and I cannot find CommandManager under Telerik.Windows.Controls.   Likewise, when specifying <telerik:CommandManager.InputBindings> in XAML, I get 'The attachable property InputBindings was not found in type CommandManager'.  Am I missing something or is this only meant to work in Silverlight? 

I'm using the latest Q3 release.

Thanks in advance..
Vic