Questions on UI for WPF Forum

4 answers

117 views

Hello,

I want to perform my own custom logic whenever an item is dragged/dropped. This procedure requires me to access the item's parent. I noticed that when I drag items and then drop them, in the RadTreeView.DragEnded event, the item's ParentItem property becomes null and the FullPath string property is also cleared.

Is this the correct event to handle for my custom logic (i.e. performing the "drop" in the business logic)? If so, how can I get the item's parent before it was dragged (i.e. its current parent).

Thank you.

TreeView

answered on 14 Jan 2010

1 answer

103 views

Q3 GridView MouseLeftButtonDown event not fire

Hi There
We are shift to Q3 Controls but my MouseLeftButtonDown on GridView doesn't fire. As i have seen the post where this event handle by mouse class of Telerik.Windows.Input namespace but we are not able to find this namespace, there may be version issue. We use assemblies with version [2009.3.1103.35]. Please reply me as soon as possible. and if possible submit a demo.

General Discussions

answered on 14 Jan 2010

1 answer

248 views

Hiding calendar toggle button

Is it possible to hide the calendar toggle button of the RadDatePicker control?

Regards,
Michael

DatePicker

answered on 14 Jan 2010

1 answer

306 views

Context menu on header cell problem

Hello,

I'm using the GridView/HeaderContextMenu example for version 2009.3.1208.35. When i have more columns than displayed on the screen it seems to mix up the contextmenus. Also this line of code IEnumerable<GridViewHeaderCell> cells = row.Cells.OfType<GridViewHeaderCell>(); in the InitializeMenus method doesn't return all of the GridViewHeaderCells.

made a quick example,

    
            <Window x:Class="WpfApplication1.Window1" 
        
                xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" 
        
                xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" 
        
                xmlns:telerk="http://schemas.telerik.com/2008/xaml/presentation" 
        
                xmlns:local="clr-namespace:WpfApplication1"> 
        
                <Grid> 
        
                    <telerk:RadGridView x:Name="rgv" local:GridViewHeaderMenu.IsEnabled="True" /> 
        
                </Grid> 
        
            </Window>

    
            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; 
        
            namespace WpfApplication1 
        
            { 
        
                /// <summary> 
        
                /// Interaction logic for Window1.xaml 
        
                /// </summary> 
        
                public partial class Window1 : Window 
        
                { 
        
                    public Window1() 
        
                    { 
        
                        InitializeComponent(); 
        
                        ArrayList List = new ArrayList(); 
        
                        for (int i = 0; i < 100; i++) 
        
                        { 
        
                            List.Add(new Testing() 
        
                            { 
        
                                Test1 = i.ToString(), 
        
                                Test2 = i, 
        
                                Test3 = i, 
        
                                Test4 = i.ToString(), 
        
                                Test5 = i, 
        
                                Test6 = i, 
        
                                Test7 = i.ToString(), 
        
                                Test8 = i, 
        
                                Test9 = i, 
        
                                Test10 = i.ToString(), 
        
                                Test11 = i, 
        
                                Test12 = i, 
        
                                Test13 = i.ToString(), 
        
                                Test14 = i, 
        
                                Test15 = i, 
        
                                Test16 = i.ToString(), 
        
                                Test17 = i, 
        
                                Test18 = i 
        
                            }); 
        
                        } 
        
                        rgv.ItemsSource = List; 
        
                    } 
        
                } 
        
                public class Testing 
        
                { 
        
                    public String Test1 { get; set; } 
        
                    public int Test2 { get; set; } 
        
                    public Double Test3 { get; set; } 
        
                    public String Test4 { get; set; } 
        
                    public int Test5 { get; set; } 
        
                    public Double Test6 { get; set; } 
        
                    public String Test7 { get; set; } 
        
                    public int Test8 { get; set; } 
        
                    public Double Test9 { get; set; } 
        
                    public String Test10 { get; set; } 
        
                    public int Test11 { get; set; } 
        
                    public Double Test12 { get; set; } 
        
                    public String Test13 { get; set; } 
        
                    public int Test14 { get; set; } 
        
                    public Double Test15 { get; set; } 
        
                    public String Test16 { get; set; } 
        
                    public int Test17 { get; set; } 
        
                    public Double Test18 { get; set; } 
        
                } 
        
            }

    
            using System; 
        
            using System.Collections.Generic; 
        
            using System.Linq; 
        
            using System.ComponentModel; 
        
            using System.Text; 
        
            using System.Windows; 
        
            using System.Windows.Data; 
        
            using Telerik.Windows; 
        
            using Telerik.Windows.Controls; 
        
            using Telerik.Windows.Controls.GridView; 
        
            using Telerik.Windows.Data; 
        
            namespace WpfApplication1 
        
            { 
        
                public class GridViewHeaderMenu 
        
                { 
        
                    private RadGridView grid = null; 
        
                    public GridViewHeaderMenu(RadGridView grid) 
        
                    { 
        
                        this.grid = grid; 
        
                    } 
        
                    public static readonly DependencyProperty IsEnabledProperty 
        
                        = DependencyProperty.RegisterAttached("IsEnabled", typeof(bool), typeof(GridViewHeaderMenu), 
        
                            new PropertyMetadata(new PropertyChangedCallback(OnIsEnabledPropertyChanged))); 
        
                    public static void SetIsEnabled(DependencyObject dependencyObject, bool enabled) 
        
                    { 
        
                        dependencyObject.SetValue(IsEnabledProperty, enabled); 
        
                    } 
        
                    public static bool GetIsEnabled(DependencyObject dependencyObject) 
        
                    { 
        
                        return (bool)dependencyObject.GetValue(IsEnabledProperty); 
        
                    } 
        
                    private static void OnIsEnabledPropertyChanged(DependencyObject dependencyObject, DependencyPropertyChangedEventArgs e) 
        
                    { 
        
                        RadGridView grid = dependencyObject as RadGridView; 
        
                        if (grid != null) 
        
                        { 
        
                            if ((bool)e.NewValue) 
        
                            { 
        
                                // Create new GridViewHeaderMenu and attach RowLoaded event. 
        
                                GridViewHeaderMenu menu = new GridViewHeaderMenu(grid); 
        
                                menu.Attach(); 
        
                            } 
        
                        } 
        
                    } 
        
                    private void Attach() 
        
                    { 
        
                        if (grid != null) 
        
                        { 
        
                            this.grid.Loaded += new RoutedEventHandler(grid_Loaded); 
        
                        } 
        
                    } 
        
                    void grid_Loaded(object sender, RoutedEventArgs e) 
        
                    { 
        
                        GridViewHeaderRow headerRow = grid.ChildrenOfType<GridViewHeaderRow>().FirstOrDefault(); 
        
                        if (headerRow != null) 
        
                        { 
        
                            InitializeMenus(headerRow); 
        
                        } 
        
                    } 
        
                    private void InitializeMenus(GridViewHeaderRow row) 
        
                    { 
        
                        IEnumerable<GridViewHeaderCell> cells = row.Cells.OfType<GridViewHeaderCell>(); 
        
                        foreach (GridViewHeaderCell cell in cells) 
        
                        { 
        
                            // create menu 
        
                            RadContextMenu contextMenu = new RadContextMenu(); 
        
                            // set menu Theme 
        
                            StyleManager.SetTheme(contextMenu, StyleManager.GetTheme(grid)); 
        
                            RadMenuItem item = new RadMenuItem() { Header = String.Format(@"Sort Ascending by ""{0}""", cell.Column.Header) }; 
        
                            contextMenu.Items.Add(item); 
        
                            item = new RadMenuItem() { Header = String.Format(@"Sort Descending by ""{0}""", cell.Column.Header) }; 
        
                            contextMenu.Items.Add(item); 
        
                            item = new RadMenuItem() { Header = String.Format(@"Clear Sorting by ""{0}""", cell.Column.Header) }; 
        
                            contextMenu.Items.Add(item); 
        
                            item = new RadMenuItem() { Header = String.Format(@"Group by ""{0}""", cell.Column.Header) }; 
        
                            contextMenu.Items.Add(item); 
        
                            item = new RadMenuItem() { Header = String.Format(@"Ungroup ""{0}""", cell.Column.Header) }; 
        
                            contextMenu.Items.Add(item); 
        
                            item = new RadMenuItem() { Header = "Choose Columns:" }; 
        
                            contextMenu.Items.Add(item); 
        
                            // create menu items 
        
                            foreach (GridViewColumn column in grid.Columns) 
        
                            { 
        
                                RadMenuItem subMenu = new RadMenuItem() 
        
                                { 
        
                                    Header = column.Header, 
        
                                    IsCheckable = true, 
        
                                    IsChecked = true 
        
                                }; 
        
                                // bind IsChecked menu item property to IsVisible column property 
        
                                subMenu.SetBinding(RadMenuItem.IsCheckedProperty, 
        
                                    new Binding("IsVisible") { Mode = BindingMode.TwoWay, Source = column }); 
        
                                item.Items.Add(subMenu); 
        
                            } 
        
                            contextMenu.AddHandler(RadMenuItem.ClickEvent, new RoutedEventHandler(OnMenuItemClick)); 
        
                            // attach menu 
        
                            RadContextMenu.SetContextMenu(cell, contextMenu); 
        
                        } 
        
                    } 
        
                    void OnMenuItemClick(object sender, RoutedEventArgs e) 
        
                    { 
        
                        RadContextMenu menu = (RadContextMenu)sender; 
        
                        RadMenuItem clickedItem = ((RadRoutedEventArgs)e).OriginalSource as RadMenuItem; 
        
                        GridViewColumn column = ((GridViewHeaderCell)menu.UIElement).Column; 
        
                        if (clickedItem.Parent is RadMenuItem) 
        
                            return; 
        
                        string header = Convert.ToString(clickedItem.Header); 
        
                        using (grid.DeferRefresh()) 
        
                        { 
        
                            Telerik.Windows.Data.SortDescriptor sd = (from d in grid.SortDescriptors 
        
                                                                      where d.Member == column.UniqueName 
        
                                                                      select d).FirstOrDefault(); 
        
                            if (header.Contains("Sort Ascending")) 
        
                            { 
        
                                if (sd != null) 
        
                                { 
        
                                    grid.SortDescriptors.Remove(sd); 
        
                                } 
        
                                grid.SortDescriptors.Add(new Telerik.Windows.Data.SortDescriptor() 
        
                                { 
        
                                    Member = column.UniqueName, 
        
                                    SortDirection = ListSortDirection.Ascending 
        
                                }); 
        
                            } 
        
                            else if (header.Contains("Sort Descending")) 
        
                            { 
        
                                if (sd != null) 
        
                                { 
        
                                    grid.SortDescriptors.Remove(sd); 
        
                                } 
        
                                grid.SortDescriptors.Add(new Telerik.Windows.Data.SortDescriptor() 
        
                                { 
        
                                    Member = column.UniqueName, 
        
                                    SortDirection = ListSortDirection.Descending 
        
                                }); 
        
                            } 
        
                            else if (header.Contains("Clear Sorting")) 
        
                            { 
        
                                if (sd != null) 
        
                                { 
        
                                    grid.SortDescriptors.Remove(sd); 
        
                                } 
        
                            } 
        
                            else if (header.Contains("Group by")) 
        
                            { 
        
                                Telerik.Windows.Data.GroupDescriptor gd = (from d in grid.GroupDescriptors 
        
                                                                           where d.Member == column.UniqueName 
        
                                                                           select d).FirstOrDefault(); 
        
                                if (gd == null) 
        
                                { 
        
                                    grid.GroupDescriptors.Add(new Telerik.Windows.Data.GroupDescriptor() { Member = column.UniqueName, SortDirection = ListSortDirection.Ascending }); 
        
                                } 
        
                            } 
        
                            else if (header.Contains("Ungroup")) 
        
                            { 
        
                                Telerik.Windows.Data.GroupDescriptor gd = (from d in grid.GroupDescriptors 
        
                                                                           where d.Member == column.UniqueName 
        
                                                                           select d).FirstOrDefault(); 
        
                                if (gd != null) 
        
                                { 
        
                                    grid.GroupDescriptors.Remove(gd); 
        
                                } 
        
                            } 
        
                        } 
        
                    } 
        
                } 
        
            }

on my machine if you scroll to the right an open the contextmenu for column Test17 it opens up the contextmenu for Test3.

Any help would be great.
Thanks Again,
~Boots

GridView

answered on 14 Jan 2010

2 answers

129 views

GridVeiw Header selected event

hi,
i want to perform some action when ever user selects the row header of the grid view,
now problem is that i don't know what is the event name for Telerik GridView.

please, tell me the event name of row header selection by mouse.
thanks

GridView

answered on 13 Jan 2010

3 answers

96 views

Hi-lighting a Grid Row

Hello,

I am appending an entry to a grid that contains several hundred items. I use ScrollIntoView to scroll the grid to where the item was added but I have not figured out how to hi-light (select) the new entry. The example at this site on how to do this uses constructs that are no longer supported by the latest release. The grid has the SelectAll and UnSelectAll commands so there has to be some command that selects only one row.

Any help would be appreciated.

Thanks

GridView

answered on 13 Jan 2010

2 answers

86 views

Search by column

Hello,
i need to select an item in GridView that his field is starting by text entered by the user.
In other words i have a text box and a grid, the grid is sorted by colomn x.
The text box is a quick seach to the grid and whenever the user enters a text
i need to select an item in Grid that his colomn x starting with the string in my text box.
is there a easy way to do it?

thank you

GridView

answered on 13 Jan 2010

1 answer

197 views

RadDockPanel not found in WPF

Hi all,

We are testing to buy the library. For this we did a nice prototype in Silverlight to test RadControl.
Now i'm converting the silverlight prototype to WPF to see how the RadControl lib behaves since we have to choose a lib which is 100% compatible with silverlight and WPF. We don't want to wonder each time we do something in silverlight if it is potential broken on WPF.

Currently I'm facing a problem with RadControl and the WPF version of our prototype. Visual Studio saying it can't find reference to some RadControl component.

RadDockPanel
RadDockPanel.Dock
HierarchicalDataTemplate

It logs Erreur   2   Erreur de génération inconnue, 'MC3074 : la balise 'HierarchicalDataTemplate' n'existe pas dans l'espace de noms XML 'clr-namespace:Telerik.Windows.Controls;assembly=Telerik.Windows.Controls'. Ligne 16 Position 10.'

Erreur   3   Erreur de génération inconnue, 'MC3074 : la balise 'RadDockPanel' n'existe pas dans l'espace de noms XML 'clr-namespace:Telerik.Windows.Controls;assembly=Telerik.Windows.Controls'. Ligne 32 Position 10.'

Erreur   4   Le type 'telerik:RadDockPanel' est introuvable. Assurez-vous qu'il ne manque aucune référence d'assembly et que tous les assemblys référencés ont été générés.

I've well added references with all Telerik's references availables.

So my question is why it does not found this telerik components in WPF version?

This raises 2 important questions

1) Do all the Telerik's components available in silverlight are available in WPF ?
2) Do all the Telerik's components have the same naming in both SDK ?

Thank you by advance for your support.

Luciano

Docking

answered on 13 Jan 2010

1 answer

182 views

Changing theme dynamically

Hi,

I'm trying to change the theme of a RadWindow from C# but couldn't get it to work. This is my code:

XAML:

<telerikNavigation:RadWindow

x:Name="winMainWindow"

... />

C# (Button click event):

StyleManager.SetTheme(this.winMainWindow, new VistaTheme());

Note that the RadWindow is the root element, and my code behind class is inheriting from RadWindow as follow:

public partial class MainWindow : RadWindow

{

...

Window

answered on 13 Jan 2010

5 answers

136 views

Footer Row on Export to Excel???

I just built a sample app with a RadGridView that displays a table of data and has a footer row. For the sample, I'm just summing one column and displaying it in the footer.

Based off another sample from the website, I wanted to export this grid to Excel, however, I'm not getting my footer row to display in the Excel file.

I noticed your ExportElement enum doesn't have FooterRow listed and the ExportElement.Row doesn't seem to pickup footerrows,,,,is this intentional?

Thanks,
Byron

GridView

answered on 13 Jan 2010