Questions on UI for WPF Forum

8 answers

226 views

How set content height in RadPanelBarItem 100%? That after item closed, content stretch at the height of the window!
I want get design like Outlook panel.

Thanks.

PS: Sorry for my English )

PanelBar

answered on 26 Dec 2008

2 answers

418 views

Data trigger not working with dynamically created date picker

I am creating a date picker in my code and want to change its background whenever its value is not valid(specified by IsValidFieldValue flag), but its not working .

Here is my code for creating the control and style :

    
            // Binding to be set for control 
        
            Binding binding = new Binding("Value"); 
        
            binding.Mode = BindingMode.TwoWay; 
        
            binding.UpdateSourceTrigger = UpdateSourceTrigger.PropertyChanged; 
        
            string datePickerXamlTemplate = "<telerik:RadDatePicker x:Name=\"uxDatePickerCustomField{0}\" Grid.Row=\"1\" Grid.Column=\"1\" Height=\"24\" HorizontalAlignment=\"Left\" Margin=\"8,5,8,5\" Width=\"125\" xmlns=\"http://schemas.microsoft.com/winfx/2006/xaml/presentation\" xmlns:telerik=\"clr-namespace:Telerik.Windows.Controls;assembly=Telerik.Windows.Controls.Input\" xmlns:x=\"http://schemas.microsoft.com/winfx/2006/xaml\" />"; 
        
            string datePickerXaml = string.Format(datePickerXamlTemplate, field.Id, count); 
        
            stream = new MemoryStream(ASCIIEncoding.Default.GetBytes(datePickerXaml)); 
        
            RadDatePicker datePicker = (RadDatePicker)System.Windows.Markup.XamlReader.Load(stream); 
        
            datePicker.SetBinding(RadDatePicker.SelectedDateProperty, binding); 
        
            datePicker.Style = (Style)FindResource("DatePickerStyle"); 
        
            datePicker.DataContext = field; // Object having properties - Value and IsValidFieldValue. Implements INotifyPropertyChanged

            uxGrid.Children.Add(datePicker); // Added to a Grid

    
                <UserControl.Resources> 
        
                    <Style TargetType="{x:Type telerikInput:RadDatePicker}" x:Key="DatePickerStyle"> 
        
                        <Style.Triggers> 
        
                            <DataTrigger Binding="{Binding Path=IsValidFieldValue, UpdateSourceTrigger=PropertyChanged, Mode=TwoWay}" Value="false"> 
        
                                <Setter Property="telerikInput:RadDatePicker.Background" Value="#FFFFB9B9" /> 
        
                            </DataTrigger> 
        
                        </Style.Triggers> 
        
                    </Style>       
        
                </UserControl.Resources>

DatePicker

answered on 24 Dec 2008

3 answers

139 views

Collumn.Width="*" throws Exception

I have a bug when I set the width of a column to * (i.e. take up all remaining space). This works fine if I populate the DataContext before I view the grid (e.g. in the constructor of WPF page) but fails when I populate the DataContext after the grid has been created and laid out (e.g. User choose an item to display in the grid at runtime).

Here is the code need to recreate the problem.

    
            public class DummyObject 
        
                { 
        
                    public DummyObject(string name, string notes) 
        
                    { 
        
                        Name = name; 
        
                        Notes = notes; 
        
                    } 
        
                    public string Name 
        
                    { 
        
                        get; 
        
                        set; 
        
                    } 
        
                    public string Notes 
        
                    { 
        
                        get; 
        
                        set; 
        
                    } 
        
                }

Class or storing some data

    
            public partial class Window1 : Window 
        
                { 
        
                    public Window1() 
        
                    { 
        
                        InitializeComponent(); 
        
                        //This works fine 
        
                        //PopulateGrid(); 
        
                    } 
        
                    private void Populate_Click(object sender, RoutedEventArgs e) 
        
                    { 
        
                        //This will throw an exception 
        
                        PopulateGrid(); 
        
                    } 
        
                    private void PopulateGrid() 
        
                    {             
        
                        List<DummyObject> myObjects = new List<DummyObject>() 
        
                        { 
        
                            new DummyObject("Justin", "Here is a note"), 
        
                            new DummyObject("Paul", "Paul has a note too"), 
        
                            new DummyObject("Sam", "Sam has a note that is much longer than the other notes"), 
        
                            new DummyObject("Dean", "Nothing to see here"), 
        
                            new DummyObject("Andrew", "Blah blah blah blah") 
        
                        }; 
        
                        mainGrid.DataContext = myObjects; 
        
                    } 
        
                }

Code behind of Window class

    
            <Window x:Class="TeleirkDatagridBug.Window1" 
        
                xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" 
        
                xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" 
        
                xmlns:telerik="http://schemas.telerik.com/2008/xaml/presentation" 
        
                Title="Window1" Height="300" Width="300"> 
        
                <DockPanel> 
        
                    <StackPanel DockPanel.Dock="Top"> 
        
                        <Button Content="Populate" Click="Populate_Click"/> 
        
                    </StackPanel> 
        
                    <telerik:RadGridView AutoGenerateColumns="False" x:Name="mainGrid" ItemsSource="{Binding}"> 
        
                        <telerik:RadGridView.Columns> 
        
                            <telerik:GridViewDataColumn Width="100" HeaderText="Name" UniqueName="Name"/> 
        
                            <telerik:GridViewDataColumn Width="*" HeaderText="Notes" UniqueName="Notes"/> 
        
                        </telerik:RadGridView.Columns> 
        
                    </telerik:RadGridView> 
        
                </DockPanel> 
        
            </Window>

XAML for window

Hope you can help.

Regards

Justin

GridView

answered on 23 Dec 2008

9 answers

268 views

Documentation is frustrating

Hi,

I tried to solve a (I guess) very common task today - and checked the help for this.
I found - almost nothing :(

I compare this to my "Telerik Gateway Drug" .ASP.NET Controls :(
Looking at the ASP.NET Grid there I find "Functional Overview" - "Getting Started" and so on.
With WPF I find -- a number of "overview topics" - nothing more.

Back to my task - I have a grid which shall display 3 Columns of data.
Lets say - ProductName, Price, Tax
Since Price and Tax would no become very large I fix there width to 100.
What I tried to approach was to set the width of the name column to be "Stretching".
First approach Width="*" -- fails with an exception.
So I decided to leave out the Width attribute.

Since the Documentation gave me no information I tried it with the samples.
By luck I found that there is a property called CollumnsWidthMode.
Anyhow - whatever I set it gave me "strange" results.

How can I do what I want - First Column "filling" the widht of the grid, the other 2 columns with a fixed width?

I'm a customer over years.
More and more it looks as if you build functionality after functionality - and stop documenting the things.
You build great examples - and if (by luck) one fills the needs we have a good starting point for a solution.
If not - bad luck :(
And - it is extremely time consuming to browse numbers of sample files just to pick up a snippet there and an other snippet somewhere else.

My idea -- you (your developer team) started up with "beeing new" - and therefore you also knew how hard it is to solve problems.
And you documented it - making it very easy for your customers to use the controls.

Now you have a lot of expiriences - and have no problems to solve even complex tasks. And by this you forgot that your customer (at least a lot of them) do not have your skill and get stuck with this minmalistic documentation.

I did the work and counted the entries about a comming task (for me) -- hirarchical data binding.
In ASP Grid I find 12 Topis about this and EXTRA 8 "how to" Topics.

In WPF Grid I find exactly ONE entry about this - containin a extreme simple solution.
The so called documentation about this topic has less than 20 Lines of explanation.

I had the same problems with Gauge in Silverlight (where the documentation is completely missing).
And by this I learned an other thing about your new products -- they became extremely complex in the last years.
Of course they do much more and are therefore more complex -- BUT a competitor of you showed me that it does not have to be like this.

They also have a gauge - and they provide a PDF file "Getting Started" -- and with two lines of XAML you get a working Gauge.
It's simple, It's proper documented -- and it also allows complex scenarios and great looking results.

From another competitor I downloaded a free (not trial - really free) Grid Control.
It also provides very good help -- and with it I could solve my "Grid Problem" in about 10 Minutes.

CONCLUSION:
Why do I buy a control suite?
-My work is to solve customers problems, to design an write software.
-With I control suite I expect to save a lot of time.
What WAS my relation with Telerik?
I found you years ago on the web. I gave your navigation suite (for ASP) a try and learned three things:
a.) Great functionality and intuitive use
b.) Very good support - the reaction time was great - and all my problems got solved.
c.) Your controls did what the "orginals" (MS included) controls did - but better, easier and more stable.
What IS my current situation?
I get a bunch of new controls.
From release to release there is more functionality.
The documentation becomes worser with every new product (feature).
Take it and use it is over - there is (almost) no "out of the box" functionality.
Problems do not get solved over months.
---Example WinForms Tab Control.
----The MS Control begins to scroll if I add more elements than displayable.
----Your control does not scroll at designtime -- it is almost impossible to build a solution with a "buch of tabs"
----This problem is known -- and there was a promise "....will fix this with the next release...."
----Not fixed till today!!!!

In a view words:
I tried to solve a common task with your grid.
I could not find anything in the documentation.
Even to give the grid "a bit of the wanted look" took me hours browsing your samples.
--Taking a free grid made me solve the problem in about 10 Minutes.

You remember: I (and I guess most of your customers) buy a control suite to develope FASTER and to be able to concentrate on "my part of the job".

Regards

Manfred
PS: please excuse my english - I'm from Austria :)

GridView

answered on 23 Dec 2008

3 answers

131 views

Binding combo box editor to property of row record

Hello,

I am wondering if the following scenario is possible and how I would implement it. Basically what I want to do is bind the list of items in a GridViewComboBoxEditor to a property of the data record for that row.

I have an object model that looks similar to this:

    
            public class SomeObject
        
            { 
        
                public Field SelectedField { get; set; }

                public string SelectedString { get; set; } 

            } 
        
            public class Field 

            { 
        
                public string[] ListOfAllowedItems; 
        
            }

I have a grid that displays a list of SomeObject items, each of which contains a Field. Depending on the Field the user selected, the list of items in another column needs to change according to a list defined on the Field object.

Any help would be greatly appreciated.

Thanks,
Joel

GridView

answered on 23 Dec 2008

4 answers

96 views

Hiearchical Data / Parent - Child in the Carousel ?

Hi..
Does the Carousel support displaying and data binding of multiple tables , lIke a Customer and Products relationship?

I can bind a DataTable to the Carousel but how do I Bind at DataSet and the individual tables ?
My radCarousel doesn't have a DataMember property..? What am I missing? Thanks again for your help!

Carousel

answered on 22 Dec 2008

5 answers

108 views

Will Q3 include Context Menu?

My understanding is that what is available in RadControls for Silverlight should be also available in RadControls for WPF. Is it correct?

General Discussions

answered on 20 Dec 2008

3 answers

185 views

Path

How do you modify the path at design-time in visual studio?
thanks

Carousel

answered on 19 Dec 2008

2 answers

110 views

Telerik.Windows.Data.DataRecord

Hi..
How do I return my row values from the DataRecord object ? Thanks Again!!

I'm using a converter class - as you suggested to conditionally format data...

public

object Convert(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)

{

// If the Lastname field in my datarow begins with "A" - then display an A ICON......

if (((Telerik.Windows.Data.DataRecord)value).Data.ToString()=="A")

{

return "A.jpg";

}

return String.Format("{0}.jpg", ((Telerik.Windows.Data.DataRecord)value).Data);

}

Carousel

answered on 19 Dec 2008

8 answers

326 views

How set Selected on Row from source

How i can select row in RadGridView in SelectionChanged event (i want to cancel selection)? I set SelectedItem and CurrentItem, but grid not display that this item is selected.

May be i can make necessary inspections before call SelectionChanged (but i can find method, which call before)?

Could you help me?!

GridView

answered on 18 Dec 2008