Questions on UI for WPF Forum

7 answers

149 views

RadDocking Object reference not set to an instance of an object when hosted in windows forms

Hello,

I'm running internal build 2010.1.326.35. When i host the RadDocking control inside of a windows form using a ElementHost I'm getting "Object reference not set to an instance of an object."

sample code.

    
            using System; 
        
            using System.Collections.Generic; 
        
            using System.ComponentModel; 
        
            using System.Data; 
        
            using System.Drawing; 
        
            using System.Linq; 
        
            using System.Text; 
        
            using System.Windows.Forms; 
        
            namespace WindowsFormsApplication1 
        
            { 
        
                public partial class Form1 : Form 
        
                { 
        
                    public Form1() 
        
                    { 
        
                        try 
        
                        { 
        
                            InitializeComponent(); 
        
                            this.elementHost1.Child = new UserControl1(); 
        
                        } 
        
                        catch (Exception ex) 
        
                        { 
        
                            MessageBox.Show(ex.ToString()); 
        
                        } 
        
                    } 
        
                } 
        
            }

usercontrol code

    
            <UserControl x:Class="WindowsFormsApplication1.UserControl1" 
        
                xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" 
        
                xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" 
        
                xmlns:radDock="clr-namespace:Telerik.Windows.Controls;assembly=Telerik.Windows.Controls.Docking"> 
        
                <Grid> 
        
                    <radDock:RadDocking /> 
        
                </Grid> 
        
            </UserControl>

    
            using System; 
        
            using System.Collections.Generic; 
        
            using System.Linq; 
        
            using System.Text; 
        
            using System.Windows; 
        
            using System.Windows.Controls; 
        
            using System.Windows.Data; 
        
            using System.Windows.Documents; 
        
            using System.Windows.Input; 
        
            using System.Windows.Media; 
        
            using System.Windows.Media.Imaging; 
        
            using System.Windows.Navigation; 
        
            using System.Windows.Shapes; 
        
            namespace WindowsFormsApplication1 
        
            { 
        
                /// <summary> 
        
                /// Interaction logic for UserControl1.xaml 
        
                /// </summary> 
        
                public partial class UserControl1 : UserControl 
        
                { 
        
                    public UserControl1() 
        
                    { 
        
                        InitializeComponent(); 
        
                    } 
        
                } 
        
            }

any suggestions for a workaround would be great. we have a conference coming up next week to demonstrate our product and this control is in all of our WPF maintenance screens.

Thanks much
~Boots

Docking

answered on 07 Apr 2010

2 answers

258 views

Refresh Gridview when database updated

Problem:
1. How to Refresh Radgridview when i Insert Record in database and update record.
2.when i am Insert or Update Record than in radgridview that row is selected.

i am useing sql server 2005.

i am use to set data source of radgridview like " radgridview1.ItemsSource = ds; " ==> ds is dataset.

i am beginner so if possible than tel me by code it is easy to understand.......

can u help me as early as possible ....

GridView

answered on 06 Apr 2010

2 answers

158 views

Horizontal Zooming Bug

Hi,

is this a bug or have i missed some configuration for horizontal zooming. Please look at the screen I attached - horizontal zooming is not working for my chart. Any suggestions?

Besides, I'm still waiting for an answer or help with the horizontal drawing line problem ...

PS: It would be very helpful if you allow users to attach word-files or pdfs...

Chart

answered on 06 Apr 2010

9 answers

295 views

Theme editing - how?

A client is keen to use a custom theme that does not closely match any of the out-of-the-box themes.

a. How can I easily modify an existing Telerik theme to create a new one?
b. Can I make standard MS WPF controls adopt such a theme?
c. Or, will some 3rd party theme provider also work with Telerik controls?

Many thanks for any guidance,

James.

General Discussions

answered on 06 Apr 2010

1 answer

291 views

Can we reposition the date picker (drop down calendar control)?

In RadDatePicker, when click the Date picker button, the drop down calendar control will display.
It aligns on the left and bottom of RadDatePicker control.
Is there a way that we can reposition the Drop down calendar control position?
such as align it on the right and top of the RadDatePicker?
thx!

Calendar

answered on 06 Apr 2010

1 answer

130 views

Getting a Record ID from the selected item in a crousel.

Hi,
I have a carousel, and when i scroll , click through the items and then double click on a item, I would like to extract the value from the carousel. As I can't see anything obvious like you would find in a combo box.

For example I have a list of employees with a 'name' and 'employee id'. I select double click on a employee and i want to then be able to get the employee id.

My Xaml

    
            <Page x:Class="Elica_WardView.Page1" 
        
                xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" 
        
                xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" 
        
                Title="Page1"   
        
                xmlns:local="clr-namespace:Elica_WardView" 
        
                xmlns:telerik="http://schemas.telerik.com/2008/xaml/presentation" 
        
                xmlns:carousel="clr-namespace:Telerik.Windows.Controls.Carousel;assembly=Telerik.Windows.Controls.Navigation">  
        
                <Canvas xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" x:Name="BackGround" Width="2000" Height="900" Canvas.Left="0" Canvas.Top="0">  
        
                    <Canvas.Background> 
        
                        <LinearGradientBrush StartPoint="0.505999,-0.00069987" EndPoint="0.505999,1.0007">  
        
                            <LinearGradientBrush.GradientStops> 
        
                                <GradientStop Color="#FF388CE3" Offset="0"/>  
        
                                <GradientStop Color="#FFFFFFFF" Offset="1"/>  
        
                            </LinearGradientBrush.GradientStops> 
        
                        </LinearGradientBrush> 
        
                    </Canvas.Background> 
        
                    <Grid Width="2000">  
        
                        <Grid.ColumnDefinitions> 
        
                            <ColumnDefinition Width="800" /> 
        
                      </Grid.ColumnDefinitions> 
        
                        <Grid.RowDefinitions> 
        
                            <RowDefinition Height="Auto"/>  
        
                            <RowDefinition Height="450"/>  
        
                       </Grid.RowDefinitions> 
        
                        <Grid.Resources> 
        
                            <DataTemplate DataType="{x:Type local:MyMaps}">  
        
                                    <Grid> 
        
                                        <Grid.ColumnDefinitions> 
        
                                            <ColumnDefinition Width="450" /> 
        
                                        </Grid.ColumnDefinitions> 
        
                                        <Grid.RowDefinitions> 
        
                                            <RowDefinition Height="290" /> 
        
                                            <RowDefinition Height="100" /> 
        
                                        </Grid.RowDefinitions> 
        
                                        <Image Source="{Binding Path=Image}" Grid.Column="0" Grid.Row="0" MouseDown="Image_MouseDown"/>  
        
                                        <TextBlock Grid.Column="0" Grid.Row="1" Text="{Binding Path=Description}" FontSize="14"/>  
        
                                    </Grid> 
        
                            </DataTemplate> 
        
                        </Grid.Resources> 
        
                        <Image Source="Images/Logo.png" Grid.Column="0" Grid.Row="0" Width="450" /> 
        
                        <telerik:RadCarousel Name="radCarousel1" Height="390" Grid.Row="1" VerticalAlignment="Bottom" Grid.Column="0" AutoGenerateDataPresenters="False" SelectedItem="{Binding Path=Ward}">  
        
                        </telerik:RadCarousel> 
        
                    </Grid> 
        
                </Canvas> 
        
            </Page>

Example of the code beind

    
            using System;  
        
            using System.Collections.Generic;  
        
            using System.Linq;  
        
            using System.Text;  
        
            using System.Windows;  
        
            using System.Windows.Controls;  
        
            using System.Windows.Data;  
        
            using System.Windows.Documents;  
        
            using System.Windows.Input;  
        
            using System.Windows.Media;  
        
            using System.Windows.Media.Imaging;  
        
            using System.Windows.Navigation;  
        
            using System.Windows.Shapes;  
        
            using System.Collections.ObjectModel;  
        
            using System.ComponentModel;  
        
            using System.Collections;  
        
            using Telerik.Windows.Controls.Carousel;  
        
            using Telerik.Windows.Controls;  
        
            using Telerik.Windows;  
        
            using Telerik.Windows.Data;  
        
            namespace Elica_WardView  
        
            {  
        
                /// <summary>  
        
                /// Interaction logic for Page1.xaml  
        
                /// </summary>  
        
                public partial class Page1 : Page  
        
                {  
        
                    public Page1()  
        
                    {  
        
                        InitializeComponent();  
        
                        radCarousel1.ItemsSource = this.CreateItemSource();  
        
                   }  
        
                    private List<MyMaps> CreateItemSource()  
        
                    {  
        
                        List<MyMaps> list = new List<MyMaps>();  
        
                        list.Clear();  
        
                        list.Add(new MyMaps(new BitmapImage(new Uri("Wards/22c_thumb.png", UriKind.Relative)),"22","1"));  
        
                        list.Add(new MyMaps(new BitmapImage(new Uri("Wards/27g_thumb.png", UriKind.Relative)), "27", "2"));  
        
                        list.Add(new MyMaps(new BitmapImage(new Uri("Wards/a1_thumb.png", UriKind.Relative)), "a1", "3"));  
        
                        list.Add(new MyMaps(new BitmapImage(new Uri("Wards/wd16_thumb.png", UriKind.Relative)), "wd16", "4"));  
        
                        list.Add(new MyMaps(new BitmapImage(new Uri("Wards/27r_thumb.png", UriKind.Relative)), "27r", "5"));  
        
                        return list;  
        
                    }  
        
                    private void Image_MouseDown(object sender, MouseButtonEventArgs e)  
        
                    {  
        
                        if (e.ClickCount >= 2)  
        
                        {  
        
                          // Get the selected value here!!    
        
                            string img = radCarousel1.CurrentItem.ToString();  
        
                            string x = e.OriginalSource.ToString();  
        
                        }  
        
                    }  
        
             }  
        
                public class MyMaps  
        
                {  
        
                    private BitmapSource _Image;  
        
                    private string _Description;  
        
                    private string _Ward;  
        
                    public MyMaps(BitmapSource Image, string Description,string Ward)  
        
                    {  
        
                        this._Image = Image;  
        
                        this._Description = Description;  
        
                        this._Ward = Ward;  
        
                    }  
        
                    public BitmapSource Image {   
        
                        get {return _Image;}  
        
                        set { _Image = value; }  
        
                    }  
        
                    public string Description {  
        
                        get { return _Description; }  
        
                        set { _Description = value; }  
        
                    }  
        
                    public string Ward {  
        
                        get { return _Ward; }  
        
                        set { _Ward = value; }  
        
                    }  
        
                }    
        
            }

Can i have some help please or example of how it can be done.

Thanks

Carousel

answered on 06 Apr 2010

1 answer

255 views

Issues with GridViewDataColumn CellEditTemplate

I have an issue with using a TimePicker inside my RadGridView. Here's my XAML:

    
            <telerik:GridViewDataColumn Header="Start Time" DataMemberBinding="{Binding SStartTime, Mode=TwoWay}"> 
        
                                <telerik:GridViewDataColumn.CellTemplate> 
        
                                    <DataTemplate> 
        
                                        <TextBlock Text="{Binding SStartTime, Mode=TwoWay, Converter={StaticResource TimeStringConverter}}" /> 
        
                                    </DataTemplate> 
        
                                </telerik:GridViewDataColumn.CellTemplate> 
        
                                <telerik:GridViewDataColumn.CellEditTemplate> 
        
                                    <DataTemplate> 
        
                                        <telerik:RadTimePicker SelectedTime="{Binding SStartTime, Mode=TwoWay}" StartTime="0:0:0" EndTime="23:0:0"/> 
        
                                    </DataTemplate> 
        
                                </telerik:GridViewDataColumn.CellEditTemplate> 
        
                            </telerik:GridViewDataColumn>

So, everything is fine if I use the TimePicker to select the time using my mouse. If I type a time in to the control and don't select the time with my mouse the underlying data is NOT updated (and on the TimePicker control this usually works fine). Any thoughts?

GridView

answered on 06 Apr 2010

4 answers

100 views

Grouping: wrong runtime-type?

Hi,
can someone tell me how to make the following sample work (grouping by inner ID fails) without modifying the OuterElement-class (in real world that comes from a third-party)?
The problem seems to be that the grouping does not use the right runtime-type but the type of the property(which is an interface that is inherited by SpecialInnerElement). Have a look and you see what I mean.

xaml:

    
            <Window x:Class="RadGridGroupingType.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" 
        
                xmlns:telerikdata="clr-namespace:Telerik.Windows.Data;assembly=Telerik.Windows.Data" 
        
                xmlns:sys="clr-namespace:System;assembly=mscorlib" 
        
                Title="Window1" Height="300" Width="300"> 
        
                <Grid> 
        
                    <telerik:RadGridView Name="radgv" AutoGenerateColumns="False" ItemsSource="{Binding}"> 
        
                        <telerik:RadGridView.Columns> 
        
                            <telerik:GridViewDataColumn Header="outer ID" DataType="{x:Type sys:Int32}" GroupMemberPath="ID"> 
        
                                <telerik:GridViewColumn.CellTemplate> 
        
                                    <DataTemplate> 
        
                                        <TextBlock Text="{Binding Path=ID}"/> 
        
                                    </DataTemplate> 
        
                                </telerik:GridViewColumn.CellTemplate> 
        
                            </telerik:GridViewDataColumn> 
        
                            <telerik:GridViewDataColumn Header="inner ID" DataType="{x:Type sys:Int32}" GroupMemberPath="InnerElement.ID"> 
        
                                <telerik:GridViewColumn.CellTemplate> 
        
                                    <DataTemplate> 
        
                                        <TextBlock Text="{Binding Path=InnerElement.ID}"/> 
        
                                    </DataTemplate> 
        
                                </telerik:GridViewColumn.CellTemplate> 
        
                            </telerik:GridViewDataColumn> 
        
                        </telerik:RadGridView.Columns> 
        
                    </telerik:RadGridView> 
        
                </Grid> 
        
            </Window>

code-behind:

    
            using System; 
        
            using System.Collections.Generic; 
        
            using System.Linq; 
        
            using System.Text; 
        
            using System.Windows; 
        
            using System.Windows.Controls; 
        
            using System.Windows.Data; 
        
            using System.Windows.Documents; 
        
            using System.Windows.Input; 
        
            using System.Windows.Media; 
        
            using System.Windows.Media.Imaging; 
        
            using System.Windows.Navigation; 
        
            using System.Windows.Shapes; 
        
            using System.Collections.ObjectModel; 
        
            namespace RadGridGroupingType 
        
            { 
        
                /// <summary> 
        
                /// Interaction logic for Window1.xaml 
        
                /// </summary> 
        
                public partial class Window1 : Window 
        
                { 
        
                    public Window1() 
        
                    { 
        
                        InitializeComponent(); 
        
                        ObservableCollection<OuterElement> col = new ObservableCollection<OuterElement>(); 
        
                        col.Add(new OuterElement() { ID = 1 }); 
        
                        col.Add(new OuterElement() { ID = 2 }); 
        
                        col.Add(new OuterElement() { ID = 3 }); 
        
                        radgv.DataContext = col; 
        
                    } 
        
                } 
        
                public class OuterElement 
        
                { 
        
                    public int ID { get; set; } 
        
                    private SpecialInnerElement m_innerElement = new SpecialInnerElement() { ID = 99 }; 
        
                    //public SpecialInnerElement InnerElement //returning the right runtimeType: grouping works 
        
                    public IInnerElement InnerElement         //returning interface: grouping does not work 
        
                    { 
        
                        get { return m_innerElement; } 
        
                    } 
        
                } 
        
                public interface IInnerElement 
        
                { 
        
                    //"does not matter"; 
        
                } 
        
                public class SpecialInnerElement: IInnerElement 
        
                { 
        
                    public int ID { get; set; } 
        
                } 
        
            }

Best Regards
Steffen

GridView

answered on 06 Apr 2010

1 answer

148 views

Keeping Parent Menu Open on Click

I'm trying to create a menu that will stay open when the user clicks on any child items (see below).

<Menu>

</MenuItem>

<telerik:RadColorSelector/>

</MenuItem>

<telerik:RadColorSelector />

</MenuItem>

</Menu>

While this seems to work for the textbox (sort of), when ever the user clicks on the RadColorSelector, the menu closes, despite setting the StaysOpenOnClick to "True". Thoughts?

ColorPicker

answered on 06 Apr 2010

10 answers

152 views

Visual 2008 SP1 Error with Internal Build 1412

Hello,

When I "upgrade" the controls to the 1412 version, specifically, Telerik.Windows.Data I receive the following error and I'm unable to view the window in design view.

Error 1 '/Microsoft.Windows.Design.Developer;component/themes/GridAdorners.xaml' value cannot be assigned to property 'Source' of object 'System.Windows.ResourceDictionary'. Cannot create instance of 'GenericTheme' defined in assembly 'Microsoft.Windows.Design.Interaction, Version=3.5.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a'. Exception has been thrown by the target of an invocation. Error at object 'ResourceDictionary_4'.

Please note I'm using Visual Studio 2008 SP1 and .NET 3.5 SP1. This appears to be similar to an issue found in the WPF Toolkit - http://blogs.msdn.com/delay/archive/2010/01/19/sometimes-it-takes-a-village-to-solve-a-problem-workaround-for-a-visual-studio-2008-design-time-issue-with-the-wpf-toolkit-when-blend-3-is-installed.aspx.

I also have Blend 3 installed and the error doesn't happen in Blend.

Kind regards,

David

GridView

answered on 05 Apr 2010