I am trying to use the RadCalendar (for WPF) to display multiple months and shade (color background) school and public holidays. Some questions:

1. Using custom IValueConverters or creating a StyleSelector seems to let me affect the CalendarButtonContent Properties or Style (respectively), but only Font Size/Weight and not Background/Border. Is this because these are CalendarButton properties? What is the simplest way to set the background of all the holiday dates?

2. In the IValueConverter or StyleSelector I have to manually 'range check' each Date. Is there a way to DataBind to this control (a collection of DateTime)? When people use the 'selection' ability to add a new holiday date/range, I want to just update the underlying collection and have that selection now 'background colored'.

3. I have set the following properties (expecting the calendar to show the entire "year" of 2008 from January to December)... but it always starts with August (the current month) in the top-left rather than January.

SelectableDateStart="2008-01-01"

SelectableDateEnd="2008-12-31"

DisplayDateStart="2008-01-01"

DisplayDateEnd="2008-12-31"

SelectedDate="2008-01-01"

Rows="4"

Columns="3" 

Tia...

Hi,

how can I hide the GroupPanel in the nested grid of a Table Hierachy?
Further there seem to be a problem with the vertical grid lines in the
nested grid - they do not match the cell width.

Thanks a lot

              Mischa

Hi... I have a basic question. Sorry, I have little experience with these Telerik Controls and overall with WPF. Basically, I have code like this:

public

 

Window1()

 

{

myAccess =

new DOAccess();

 

mySet =

new DataSet();

 

InitializeComponent();

mySet = myAccess.GetForecastData(mySet, 200802, 0, 0, 0);

mySet.Relations.Add(

"Item", mySet.Tables[0].Columns["forecast_rollup_id"],

 

mySet.Tables[1].Columns[

"forecast_rollup_id"]);

 

mySet.Relations.Add(

"Detail", mySet.Tables[1].Columns["forecast_item_id"],

 

mySet.Tables[2].Columns[

"forecast_item_id"]);

 

 

 

 

this

 

.radGridViewCustomHierarchy.DataMember = mySet.Tables[0].TableName;

 

 

this.radGridViewCustomHierarchy.ItemsSource = mySet;

 

 

}

The thing is that some columns coming from the DataSet were labeled such as "forecast_rollup_id" and I want to change the name of the actual column in the actual grid to something like "Main Item Number" (something more user-friendly). Since I am using a DataSet and I am loading information to the RadDataGrid dynamically, I am not sure how I can change the column name because when I try to get access to the columns property, I get a count value = 0 (So int columns = this.radGridViewCustomHierarchy.Columns.Count; returns zero) therefore I cannot simply do something like this: this.radGridViewCustomHierarchy.Columns["forecast_rollup_id"].HeaderText = "Main Item #"; because I get a xaml error. Furthermore, I may need to rename some columns that contain dynamic values (Thus, I cannot use alies for columns in SQL). A column may be called 200801 which needs to be renamed "Q1 2008" (Quarter One of 2008) in the grid itself. Could you please let me know how I can accomplish this change in naming to columns that were originally populated from a DataSet?

 

 

 

 

Hi I have just upgraded to SP1, removed the old references from my project and added the new ones but I now get the following unhandled exception when I open my main.xaml in VS2008


Any advice?

Thanks in advance,
Kevin Preston.

Is there a way to use a Delegate on the TabControl?

Currently, I have (in XAML):
  SelectionChanged="radTabControl1_SelectionChanged"

in the ViewModel:

     And my otherwise empty .xaml.cs file:

 
It works, but aren't we supposed to be able to do things without the code-behind?

Or, is there a better way to bind to the SelectedIndex ?

I have a panel bar and I am using the hierarchialdatatemplate.  I am also using an MVVM pattern.  My question is how can I set the IsSelected flag on my ViewModel with a setter property and/or trigger on mouse over so that I know which item in the panel bar is currently selected during a context menu action.  I have this working on a listview, but I cannot get it to work with the panelbar.  Any help or example would be greatly appreciated.

Thanks

Damon

Using VB in VS2008 with WPF 2009 Q2 Build 724.35.  The problem also showed up using Build 701.
With Build 701, when I added the second group, I got an exception in Telerik.Windows.Data with message
"Specified argument was out of the range of valid values.  Parameter name: position"
With Build 724, the exception is gone, but when grouping by two fields, either run-time or programatically, only the first data record (or the first group) is visible in the grid.  

Here is the code defining the data for the grid: 

 

 

 
Here is one simple variant of the XAML files I have used(autogenerating the columns still has the same problem):

 

 

 

 

 

 

 

Any insight will be greatly appreciated. 

Thanks,  Dan

 

Hi ,

I am not able to inherit/override style for telrik:GridViewHeaderCell

 I have Common ResourceDictionary  Style.Xaml , it has

<ResourceDictionary xmlns:telerik="http://schemas.telerik.com/2008/xaml/presentation">
    <Style TargetType="telerik:GridViewHeaderCell">
        <Setter Property="FontWeight" Value="ExtraLight" />
        <Setter Property="FontStyle" Value="Normal" />
    </Style>
</ResourceDictionary>

Im MyControl.Xaml I have

  <Window.Resources>
        <Style x:Key="CheckBoxHeaderCellStyle"  TargetType="telerik:GridViewHeaderCell">
            <Setter Property="Template">
                <Setter.Value>
                    <ControlTemplate TargetType="telerik:GridViewHeaderCell">
                        <CheckBox HorizontalAlignment="Center" VerticalAlignment="Center"/>
                    </ControlTemplate>
                </Setter.Value>
            </Setter>
        </Style>
    </Window.Resources>
    
In code behind I am using

 var dict = new ResourceDictionary
                           {
                               Source = new Uri("MyApp;component/View/styles.xaml", UriKind.Relative)
                           };
Resources.MergedDictionaries.Add(dict);

I apply style in GridDataColumn as

<telerik:GridViewDataColumn HeaderCellStyle="{StaticResource CheckBoxHeaderCellStyle}"/>

In design mode I can see the checkbox in Grid Header.But It does not show a check box in GridHeader.

I'm setting the grid's datacontext to a dataset with just 100 rows (and 67 columns).

Quite frankly, the gridview's *vertical* scrolling performance sucks - big time. It seems the more columns we have, the worse it gets.  "Deferred" scrolling is not an option (it lags too, BTW).  We need the grid to scroll smoothly as the scroller is dragging down the scrollbar. 

Curiously, horizontal scrolling seems to work just fine, regardless of the number of columns we have in the dataset.

What can we/you do to improve this?

Is there a way to move the position of a tooltip form the default?  Currently, it is displaying bellow the mouse and that is causing it to go beyond the browser window and cuts it off.  I would like it to show above and to the right of the mouse position.  Thanks.