Questions on UI for WPF Forum

5 answers

207 views

TreeInComboBox: Only allow lowest level selection

I am using the sample TreeView In ComboBox from this blog (http://blogs.telerik.com/valerihristov/posts/09-08-27/treeview_in_combobox_take_3_silverlight_3_wpf_and_radcontrols.aspx) and it looks really good. Now I would like to modify it a little by only allowing selection of the lowest level item from the tree view. How can I disable selection of higher level items but still allow the items to be collapsed?

ComboBox

answered on 22 Mar 2010

2 answers

228 views

Commanding with TreeViewItems

I'm trying to use the TreeViewItem in a RadOutlookBar to provide a navigation system for my app.

I'm trying to use Commands in a MVVM pattern to launch the views...

TreeViewItem lacks a Command property.. is there a way to do this?

TreeView

answered on 20 Mar 2010

5 answers

141 views

UseAlternateRowStyle and MultipleSelect Not supported?

What properties have replace UseAlternateRowStyle and MultipleSelect?

Q1 2010 is not supporting these and I see nothing in the release notes talking about this and I'm not seeing anything in the intellisense drop downs for a replacement.

GridView

answered on 20 Mar 2010

2 answers

131 views

NumericUpDown control does not show in Expression Blend

All it shows is an empty rectangle for which one cannot change style or template.
In VS 2010 RC designer, however, it displays correctly.
What can be done to make Expression Blend work with NumericUpDown?
Thanks

NumericUpDown

answered on 19 Mar 2010

3 answers

67 views

In Edit mode Tab works does not save on clicking elsewhere

Hi,
I am using Grid view and have a column defined as below.

    
            <telerik:GridViewDataColumn UniqueName="SiteName" Header="SiteName" DataMemberBinding="{Binding SiteName, Mode=TwoWay}"  Width="120" > 
        
                                        <telerik:GridViewDataColumn.CellTemplate> 
        
                                            <DataTemplate> 
        
                                                <TextBlock Text="{Binding SiteName}" /> 
        
                                            </DataTemplate> 
        
                                        </telerik:GridViewDataColumn.CellTemplate> 
        
                                        <telerik:GridViewDataColumn.CellEditTemplate> 
        
                                            <DataTemplate> 
        
                                                <TextBox Text="{Binding SiteName, Mode=TwoWay}" MaxLength="20" Loaded="Editor_Loaded" /> 
        
                                            </DataTemplate> 
        
                                        </telerik:GridViewDataColumn.CellEditTemplate> 
        
                                    </telerik:GridViewDataColumn>

and in code behind I have

    
            private void Editor_Loaded(object sender, RoutedEventArgs e)  
        
                    {  
        
                        Control ctrl = sender as Control;  
        
                        if (ctrl != null)  
        
                        {  
        
                            ctrl.Focus();  
        
                        }  
        
                    }

When I am in edit mode, I get a textbox. If I do tab the value is saved. If I click anywhere else, the value is not saved. Also, if I am in the last cell, hitting tab goes outside the control and value is not saved. I have to hit shift+tab to save the content. This dramatically alters the user's behaviour.

Is there a way to save the edited value on lost focus? I tried UpdateSourceTrigger=LostFocus too. No luck.

    
            <TextBox Text="{Binding ProcedureName, Mode=TwoWay, UpdateSourceTrigger=LostFocus}" MaxLength="20" Loaded="Editor_Loaded" />

Any help would be highly appreciated.
Pooran

GridView

answered on 19 Mar 2010

3 answers

195 views

ModalBackground isn't working

WPF RadWindow (Q1 2010) is never showing a modal background.

Here is simple example xaml:

                    Window x:Class="Window1"         
                    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"         
                    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"         
                    xmlns:telerikNavigation="clr-namespace:Telerik.Windows.Controls;assembly=Telerik.Windows.Controls.Navigation"         
                    Title="Window1" Height="400" Width="600" WindowStartupLocation="CenterOwner">         
                <Grid>         
                    <telerikNavigation:RadWindow ModalBackground="Red"         
                                       Name="testObj" Height="100" Width="200" CanClose="True"         
                                       WindowStartupLocation="CenterOwner" Background="Beige"/>         
                </Grid>         
            </Window>         

Here is the code:

                    Class Window1          
                Public Sub x() Handles Me.MouseLeftButtonDown         
                    testObj.ShowDialog()         
                End Sub         
            End Class         

Image is attached.

Any idea what's up?

Thanks

Window

answered on 19 Mar 2010

3 answers

211 views

Custom args to WindowClosedEventArgs

When I use the WindowClosedEventArgs I need to be able to pass my own variable all the way through so i can use the variable on close. Can we get an "arg" parameter or something to do this? ATM it looks like i'll have to make a bunch of member variables to hold the state.

Window

answered on 19 Mar 2010

4 answers

226 views

Getting the state of a hidden RadPane always return DockedLeft

I think that RadDocking.GetDockState() of an hidden pane should return

either HiddenDockedLeft or DockedLeft for a RadPane hidden left
either HiddenDockedTop or DockedTop for a RadPane hidden top
either HiddenDockedRight or DockedRight for a RadPane hidden right
either HiddenDockedBottom or DockedBottom for a RadPane hidden bottom

Also, it would be great to have PaneStateChanged for after the RadPane had changed.

In my code, I used on LayoutUpdate because I was always one step behind the real tree.
My "workaround" is by getting the property name of the Telerik.Windows.Controls.Docking.AutoHideArea

C# sample:

    
            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.Shapes; 
        
            using Telerik.Windows.Controls; 
        
            namespace QView 
        
            { 
        
                /// <summary> 
        
                /// Interaction logic for Window3.xaml 
        
                /// </summary> 
        
                public partial class Window3 : Window 
        
                { 
        
                    public Window3() 
        
                    { 
        
                        InitializeComponent(); 
        
                    } 
        
                    private void RadDocumentPane_MouseDoubleClick(object sender, MouseButtonEventArgs e) 
        
                    { 
        
                        // Create a FlowDocument 
        
                        FlowDocument mcFlowDoc = new FlowDocument(); 
        
                        // Create a paragraph with text 
        
                        Paragraph para = new Paragraph(); 
        
                        para.Inlines.Add(new Run("I am a flow document. Would you like to edit me? ")); 
        
                        para.Inlines.Add(new Bold(new Run("Go ahead."))); 
        
                        // Add the paragraph to blocks of paragraph 
        
                        mcFlowDoc.Blocks.Add(para); 
        
                        // Set contents 
        
                        rtb.Document = mcFlowDoc; 
        
                        TextPointer start = rtb.Document.ContentStart; 
        
                        TextPointer startPos = start.GetPositionAtOffset(2); 
        
                        TextPointer endPos = start.GetPositionAtOffset(8); 
        
                        TextRange textRange = new TextRange(startPos, endPos); 
        
                        Console.WriteLine(textRange.Text); 
        
                        textRange.ApplyPropertyValue(TextElement.ForegroundProperty, 
        
                            new SolidColorBrush(Colors.Blue)); 
        
                        textRange.ApplyPropertyValue(TextElement.FontWeightProperty, 
        
                            FontWeights.Bold); 
        
                        start = rtb.Document.ContentStart; 
        
                        startPos = start.GetPositionAtOffset(7); 
        
                        endPos = start.GetPositionAtOffset(18); 
        
                        textRange = new TextRange(startPos, endPos); 
        
                        Console.WriteLine(textRange.Text); 
        
                        textRange.ApplyPropertyValue(TextElement.ForegroundProperty, 
        
                            new SolidColorBrush(Colors.Red)); 
        
                        textRange.ApplyPropertyValue(TextElement.FontWeightProperty, 
        
                            FontWeights.Bold); 
        
                        startPos = rtb.Document.ContentStart; 
        
                        endPos = rtb.Document.ContentEnd; 
        
                        textRange = new TextRange(startPos, endPos); 
        
                        textRange.ClearAllProperties(); 
        
                    } 
        
                    private TreeViewItem FindItem(String p_sFind, ItemCollection p_oIC) 
        
                    { 
        
                        foreach (TreeViewItem oTVI in p_oIC) 
        
                        { 
        
                            if (oTVI.Header.ToString() == p_sFind) 
        
                            { 
        
                                return oTVI; 
        
                            } 
        
                        } 
        
                        return null; 
        
                    } 
        
                    private void TreeSet(RadSplitContainer p_oRSC, TreeViewItem p_oTVI) 
        
                    { 
        
                        TreeViewItem oTVIGroup; 
        
                        TreeViewItem oTVIChild; 
        
                        object o; 
        
                        for (int nIdx = 0; nIdx < p_oRSC.Items.Count;) 
        
                        { 
        
                            o = p_oRSC.Items[nIdx]; 
        
                            if (o is RadSplitContainer) 
        
                            { 
        
                                RadSplitContainer oRSC = o as RadSplitContainer; 
        
                                oTVIGroup = new TreeViewItem(); 
        
                                oTVIGroup.Header = "RadSplitContainer"; 
        
                                TreeSet(o as RadSplitContainer, oTVIGroup); 
        
                                p_oTVI.Items.Add(oTVIGroup); 
        
                            } 
        
                            else if (o is RadPaneGroup) 
        
                            { 
        
                                RadPaneGroup oRPG = o as RadPaneGroup; 
        
                                oTVIGroup = new TreeViewItem(); 
        
                                oTVIGroup.Header = "Group"; 
        
                                if (oRPG.Items.Count != 0) 
        
                                { 
        
                                    foreach (RadPane oRD in (o as RadPaneGroup).Items) 
        
                                    { 
        
                                        oTVIChild = new TreeViewItem(); 
        
                                        oTVIChild.Header = oRD.Header.ToString(); 
        
                                        oTVIGroup.Items.Add(oTVIChild); 
        
                                    } 
        
                                    p_oTVI.Items.Add(oTVIGroup); 
        
                                } 
        
                            } 
        
                            else 
        
                            { 
        
                                Console.WriteLine(o.GetType()); 
        
                            } 
        
                            ++nIdx; 
        
                        } 
        
                    } 
        
                    private void radDocking1_LayoutUpdated(object sender, EventArgs e) 
        
                    { 
        
                        radTreeView.Items.Clear(); 
        
                        TreeViewItem oTVIChild; 
        
                        TreeViewItem oTVIGroup; 
        
                        TreeViewItem oTVIParent; 
        
                        foreach (RadPane oRP in radDocking1.Panes) 
        
                        { 
        
                            if (oRP.IsFloating || oRP.IsFloatingOnly) 
        
                            { 
        
                                oTVIParent = FindItem("Floating", radTreeView.Items); 
        
                                if (oTVIParent == null) 
        
                                { 
        
                                    oTVIParent = new TreeViewItem(); 
        
                                    oTVIParent.Header = "Floating"; 
        
                                    radTreeView.Items.Add(oTVIParent); 
        
                                } 
        
                                oTVIChild = new TreeViewItem(); 
        
                                oTVIChild.Header = oRP.Header; 
        
                                oTVIParent.Items.Add(oTVIChild); 
        
                            } 
        
                            else if (oRP.IsInDocumentHost) 
        
                            { 
        
                                oTVIParent = FindItem("Documents", radTreeView.Items); 
        
                                if (oTVIParent == null) 
        
                                { 
        
                                    oTVIParent = new TreeViewItem(); 
        
                                    oTVIParent.Header = "Documents"; 
        
                                    radTreeView.Items.Add(oTVIParent); 
        
                                } 
        
                                oTVIChild = new TreeViewItem(); 
        
                                oTVIChild.Header = oRP.Header; 
        
                                oTVIParent.Items.Add(oTVIChild); 
        
                            } 
        
                            else if (!oRP.IsPinned) 
        
                            { 
        
                                Console.WriteLine(radDocking1); 
        
                                //Telerik.Windows.Controls.Docking.AutoHideArea.NameProperty 
        
                                //oTVIParent = FindItem(RadDocking.GetDockState(oRP.Parent).ToString(), radTreeView.Items); 
        
                                oTVIParent = FindItem(oRP.Parent.GetValue(Telerik.Windows.Controls.Docking.AutoHideArea.NameProperty).ToString(), radTreeView.Items); 
        
                                Console.WriteLine("RadDocking.GetDockState() with the RadPanel : " + RadDocking.GetDockState(oRP).ToString()); 
        
                                Console.WriteLine("RadDocking.GetDockState() with the parent(Telerik.Windows.Controls.Docking.AutoHideArea) of the RadPanel : " + RadDocking.GetDockState(oRP.Parent).ToString()); 
        
                                Console.WriteLine("Name of the Telerik.Windows.Controls.Docking.AutoHideArea : " + oRP.Parent.GetValue(Telerik.Windows.Controls.Docking.AutoHideArea.NameProperty).ToString()); 
        
                                if (oTVIParent == null) 
        
                                { 
        
                                    oTVIParent = new TreeViewItem(); 
        
                                    oTVIParent.Header = oRP.Parent.GetValue(Telerik.Windows.Controls.Docking.AutoHideArea.NameProperty).ToString(); 
        
                                    radTreeView.Items.Add(oTVIParent); 
        
                                } 
        
                                oTVIChild = new TreeViewItem(); 
        
                                oTVIChild.Header = oRP.Header; 
        
                                oTVIParent.Items.Add(oTVIChild); 
        
                            } 
        
                        } 
        
                        foreach (RadSplitContainer oRSC in radDocking1.Items) 
        
                        { 
        
                            oTVIParent = FindItem(RadDocking.GetDockState(oRSC).ToString(), radTreeView.Items); 
        
                            if (oTVIParent == null) 
        
                            { 
        
                                oTVIParent = new TreeViewItem(); 
        
                                oTVIParent.Header = RadDocking.GetDockState(oRSC).ToString(); 
        
                                radTreeView.Items.Add(oTVIParent); 
        
                            } 
        
                            TreeSet(oRSC, oTVIParent); 
        
                        } 
        
                    } 
        
                    private void radDocking1_PreviewShowCompass(object sender, Telerik.Windows.Controls.Docking.PreviewShowCompassEventArgs e) 
        
                    { 
        
                        /*if (e.TargetGroup != null)
        
                        {
        
                            e.Compass.IsCenterIndicatorVisible = CanDockIn(e.DraggedSplitContainer, e.TargetGroup, DockPosition.Center);
        
                            e.Compass.IsLeftIndicatorVisible = CanDockIn(e.DraggedSplitContainer, e.TargetGroup, DockPosition.Left);
        
                            e.Compass.IsTopIndicatorVisible = CanDockIn(e.DraggedSplitContainer, e.TargetGroup, DockPosition.Top);
        
                            e.Compass.IsRightIndicatorVisible = CanDockIn(e.DraggedSplitContainer, e.TargetGroup, DockPosition.Right);
        
                            e.Compass.IsBottomIndicatorVisible = CanDockIn(e.DraggedSplitContainer, e.TargetGroup, DockPosition.Bottom);
        
                        }
        
                        e.Canceled = !(CompassNeedsToShow(e.Compass));*/ 
        
                    } 
        
                    private void radDocking1_PaneStateChange(object sender, Telerik.Windows.RadRoutedEventArgs e) 
        
                    { 
        
                    } 
        
                } 
        
            }

XAML:

    
            <Window x:Class="QView.Window3" 
        
                xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" 
        
                xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" 
        
                xmlns:my="clr-namespace:Telerik.Windows.Controls;assembly=Telerik.Windows.Controls.Docking"  
        
                xmlns:telerik="http://schemas.telerik.com/2008/xaml/presentation" 
        
                Title="Window3" Height="300" Width="300" > 
        
                <Grid> 
        
                    <Grid.RowDefinitions> 
        
                        <RowDefinition Height="auto"/> 
        
                        <RowDefinition /> 
        
                    </Grid.RowDefinitions> 
        
                    <telerik:RadMenu x:Name="radMenu" ClickToOpen="False" Grid.Row="0"> 
        
                        <telerik:RadMenuItem Header="_File"> 
        
                            <telerik:RadMenuItem Header="New _Tab" > 
        
                            </telerik:RadMenuItem> 
        
                            <telerik:RadMenuItem Header="New _Window"> 
        
                            </telerik:RadMenuItem> 
        
                            <telerik:RadMenuItem Header="_Open"> 
        
                            </telerik:RadMenuItem> 
        
                            <telerik:RadMenuItem Header="_Edit with Microsoft Office Word" /> 
        
                        </telerik:RadMenuItem> 
        
                    </telerik:RadMenu> 
        
                    <Grid Grid.Row="1"> 
        
                        <my:RadDocking x:Name="radDocking1" Height="auto"  PaneStateChange="radDocking1_PaneStateChange" PreviewShowCompass="radDocking1_PreviewShowCompass" LayoutChangeEnded="radDocking1_LayoutUpdated"> 
        
                            <my:RadDocking.DocumentHost> 
        
                                <my:RadSplitContainer> 
        
                                    <my:RadPaneGroup> 
        
                                        <my:RadDocumentPane Header="Document 1" Title="Document 1" IsHidden="False" MouseDoubleClick="RadDocumentPane_MouseDoubleClick"> 
        
                                            <Grid> 
        
                                                <RichTextBox x:Name="rtb"> 
        
                                                    <RichTextBox.Document> 
        
                                                        <FlowDocument x:Name="FlowDoc"> 
        
                                                            <Paragraph x:Name="Paragraph"> 
        
                                                                <Bold>New France (French: Nouvelle-France) 
        
                                                                <Bold>was the</Bold> 
        
                                                                    <Italic>area</Italic> colonized</Bold> by France in North America during a period extending from the exploration of the Saint Lawrence River, by Jacques Cartier in 1534, to the cession of New France to Spain and Britain in 1763. At its peak in 1712 (before the Treaty of Utrecht), the territory of New France extended from Newfoundland to the Rocky Mountains and from Hudson Bay to the Gulf of Mexico. The territory was then divided in five colonies, each with its own administration: Canada, Acadia, Hudson Bay, Newfoundland (Plaisance),[1]  and Louisiana. The Treaty of Utrecht resulted in the relinquishing of French claims to mainland Acadia, the Hudson Bay and Newfoundland colonies, and the establishment of the colony of Île Royale (Cape Breton Island) as the successor to Acadia.[2][3] 
        
                                                            </Paragraph> 
        
                                                            <Paragraph> 
        
                                                                Around 1523, the Italian navigator Giovanni da Verrazzano convinced the king, Francis I, to commission an expedition to find a western route to Cathay (China). Late that year, Verrazzano set sail in Dieppe, crossing the Atlantic on a small caravel  with 53 men. After exploring the coast of the present-day Carolinas  early the following year, he headed north along the coast, eventually anchoring in the Narrows of New York Bay. The first European to discover the site of present-day New York, he named it Nouvelle-Angoulême in honour of the king, the former count of Angoulême. Verrazzano’s voyage convinced the king to seek to establish a colony in the newly discovered land. Verrazzano gave the names Francesca and Nova Gallia to that land between New Spain (Mexico) and English Newfoundland.[4] 
        
                                                            </Paragraph> 
        
                                                            <Paragraph> 
        
                                                                In 1534, Jacques Cartier planted a cross in the Gaspé Peninsula and claimed the land in the name of King Francis I. It was the first province of New France. However, initial French attempts at settling the region met with failure. French fishing fleets, however, continued to sail to the Atlantic coast and into the St. Lawrence River, making alliances with First Nations  that would become important once France began to occupy the land. French merchants soon realized the St. Lawrence region was full of valuable fur-bearing animals, especially the beaver, which was becoming rare in Europe. Eventually, the French crown decided to colonize the territory to secure and expand its influence in America. 
        
                                                            </Paragraph> 
        
                                                            <Paragraph> 
        
                                                                Another early French attempt at settlement in North America was Fort Caroline, established in what is now Jacksonville, Florida, in 1564. Intended as a haven for Huguenots, Caroline was founded under the leadership of René Goulaine de Laudonnière and Jean Ribault. It was sacked by the Spanish led by Pedro Menéndez de Avilés which then established the settlement of St. Augustine on September 20, 1565. 
        
                                                            </Paragraph> 
        
                                                        </FlowDocument> 
        
                                                    </RichTextBox.Document> 
        
                                                </RichTextBox> 
        
                                            </Grid> 
        
                                        </my:RadDocumentPane> 
        
                                        <my:RadDocumentPane Header="Document 2" Title="Document 2" IsHidden="False"> 
        
                                            <Grid /> 
        
                                        </my:RadDocumentPane> 
        
                                        <my:RadDocumentPane Header="Document 3" Title="Document 3" IsHidden="False"> 
        
                                            <Grid /> 
        
                                        </my:RadDocumentPane> 
        
                                    </my:RadPaneGroup> 
        
                                </my:RadSplitContainer> 
        
                            </my:RadDocking.DocumentHost> 
        
                            <my:RadSplitContainer Orientation="Vertical" InitialPosition="DockedLeft" Width="150"> 
        
                                <my:RadPaneGroup> 
        
                                    <my:RadPane Header="Pane 1" CanDockInDocumentHost="True"> 
        
                                        <Grid> 
        
                                            <telerik:RadTreeView x:Name="radTreeView"/> 
        
                                        </Grid> 
        
                                    </my:RadPane> 
        
                                    <my:RadPane Header="Pane 2"> 
        
                                        <Grid> 
        
                                        </Grid> 
        
                                    </my:RadPane> 
        
                                </my:RadPaneGroup> 
        
                            </my:RadSplitContainer> 
        
                            <my:RadSplitContainer Orientation="Horizontal" InitialPosition="DockedLeft" Width="150"> 
        
                                <my:RadPaneGroup> 
        
                                    <my:RadPane Header="Pane 3"> 
        
                                        <Grid> 
        
                                        </Grid> 
        
                                    </my:RadPane> 
        
                                    <my:RadPane Header="Pane 4"> 
        
                                        <Grid> 
        
                                        </Grid> 
        
                                    </my:RadPane> 
        
                                </my:RadPaneGroup> 
        
                            </my:RadSplitContainer> 
        
                        </my:RadDocking> 
        
                    </Grid> 
        
                </Grid> 
        
            </Window>

Docking

answered on 19 Mar 2010

3 answers

182 views

Collection of selected dates

I have a RadCalendar set to show 3 rows (months) and SelectionMode is set to Multiple. When you click the days, they highlight, which is great. How do I get the collection of selected dates, and on what event is a day added to the collection? I want to populate a listbox with the selected dates in date order each time a day is selected or unselected.

Calendar

answered on 19 Mar 2010

1 answer

87 views

Choosing where to dock a pane

Hi,
I would like to dock some of my panes only between themselves and not in other panes.
I would like the compass to show only on top of "legitimate" panes.
How can it be achieved?
Thanks
Nick

Docking

answered on 19 Mar 2010