Hi,
<UserControl>
     <telerik:RadGridView.ColumnGroups>
                            <telerik:GridViewColumnGroup Name="CommonID" Header="{Binding DataContext.ID, RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type UserControl}}}/>  
     </telerik:RadGridView.ColumnGroups>
  <telerik:RadGridView.Columns>
               <telerik:GridViewDataColumn
Header="{Binding DataContext.ID, RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type UserControl}}}
DataMemberBinding="{Binding CID}" ColumnGroupName="CommonID"/>

</telerik:RadGridView.Columns>
</UserControl>

ViewModel
=========
public string ID {get; set;}

Model
=====
public string CID {get; set;}

Output
=======
RadGrid :
------------------------------------------
       CommonID // but i need E001 here  [Column Group Header]
-----------------------------
E001       // column header
------------
c101



The binding is not working for ColumnGroup header. I have faced the same issue on Column header, but it is resolved using Datacontext.ID,relativesource....and Data is showing properly

Can anyone help me out to resolve this ?

Here is what I've been given:  The logic is bound to the grid as a conditional formatting.  On the RowLoaded Event the logic will see if the equipment is in use already.  If it is, it marks the entire row red with white forground.  However there are two editable cells that must be marked readonly.  If not this form will fail the QA testing.

So with only the RowLoadedEventArgs being passed, how do I get to the object to bind to the edit event to bind an event handler that cancels any edit???

I've seen in several forum posts (like here: http://www.telerik.com/community/forums/wpf/gridview/binding-to-cell-of-gridview-and-datacontext-says-datarow.aspx) that the Data Context for a cell is the entire object, not just the bound property. Is there a way to change this behavior so the data context is only what the column is bound to? We are binding to complex objects that are all the same type (called ValueWithFormat) and would like to set cell properties based on this type. Here's my example cell template.

I want to use FilteringControl(which appears on radgridview/radtreelistview coloumn filters) independently in my user control. Is it possible to use it independently, if yes can some one guide me with some examples...

I just upgraded from the Q1 2013 WPF controls to Q2. I had already converted my app to the new DragDropManager and it was working. After upgrading however my drop handler was never called. My drop target is a RadTreeView, my source is a RadGridView (but I don't think that matters). In addition only certain nodes in my heterogeneous tree are drop targets. I register DragEnter/Leave and Drop handlers in the Loaded event for the data template of the valid tree nodes. Hence when a drag enters the valid node I update the visual cue, when it leaves I update it, and of course when you drop it handles the drop (or it did before Q2).  

After upgrading the drop handler was never called (although the DragEnter and Leave handlers worked fine). I tried all combinations of AllowDrop, IsDragDropEnabled, TreeViewSettings.DragDropExecutionMode = true, and everything else I could find. After MUCH experimentation I found that if I register a DragOver handler on the RadTreeView with exactly one line of code in it (e.Handled = true;) the Drop handler will get called. 

I am just curious if there is an easier way or if I missed something.

Regards
Dave Goughnour

Hello,
In my project I'm using a custom collection which derrives from ObservableCollection, ex. CustomGanttCollection : ObservableCollection<CustomGanttTask>
This gives me the possibility to add some extra methods...

The same way as I declared my CustomGanttCollection
, I declared my custom gantt task as: CustomGanttTask : GanttTask

Now I thought using my CustomCollection as the Collection where the ChildTask are stored in by overriding the Children property of GanttTask in my CustomGantTask like:



Offcourse I do add some tasks in my ViewModel to the children...

Although this works (no compile errors, when I take a look at the Children property everything looks fine,...)  the GanttView Component won't show me the childtasks.

Is there a way that I can use my custom collection as the children's collection? The GanttView must be able to use the collection as it already uses one for the top-level tasks...

How do I set the ToolTip of a data cell to the content of the cell or at least to a string based content, if the cell has a string-based content?
This would be useful, if the cell width is to small to display the whole content.

I already have this style:


(I have labels as content in all my cells).

This works in principle, but I always get lots of data errors in the debug window output, because there seem to be some automatically generated cells who don't have my Label in it.

"
System.Windows.Data Error: 40 : BindingExpression path error: 'Text' property not found on 'object' ''String' (HashCode=757206908)'. BindingExpression:Path=Content.Text; DataItem='GridViewCell' (Name=''); target element is 'GridViewCell' (Name=''); target property is 'ToolTip' (type 'Object')
"

Any way to get rid of these errors?

Is there a better way to set the ToolTip of data cells to the content of cells?

Thanks

Hi!

I can set different color for each label with CreateItemStyleDelegate, could I do the same for the color of point marks of a line series?

I would specify the color of each point mark with databinding as I bind the point to it's value.

HI, 
I use in my application a gridview with four buttons to delete and add a row and to save or cancel the edit. The delete and add buttons work perfectly but not the save insert/edit button. I don't understand where is the problem in my code, if someone could help.
This is my xaml : 

I have a problem where after applying the Filter, it opens up all the nodes. 

I am using FilterDescriptor.

We have a Huge Tree and we don't want the Tree and its children  to open after applying the Filter. Any idea how to stop it from opening after applying the Filter?

I am not able to attach the project, but will attach the screen shot. 

Here is code snippet.