Questions on UI for WPF Forum

4 answers

164 views

change focus triggers requeres my tab item with frame control

Hi,
I have the following issue. I use Frame control to load data to my tabs - so i can load different pages. But when i change tabs (create new one with different page loaded) - data that my previous pages load get's requeried. How can i disable that - so that when i open a new tab - previous stays as it was and doesn't reset it's self.

Thank you.

TabControl

answered on 12 Oct 2010

1 answer

99 views

Cannot use a RadWindow as a UserControl inside another RadWindow

Hello,

I want to use a RadWindow as a user control inside another RadWindow, like as below.

<

telerik:RadWindow x:Class="MacFellow.WPF.ParentRadWindow"

xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"

xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"

xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"

xmlns:d="http://schemas.microsoft.com/expression/blend/2008"

mc:Ignorable="d"

xmlns:telerik="http://schemas.telerik.com/2008/xaml/presentation"

d:DesignHeight="300" d:DesignWidth="521">

<Grid>

<telerik:RadWindow Top="10" Left="10" Height="200" Width="300" Visibility="Visible">

</telerik:RadWindow>

</Grid>

</

telerik:RadWindow>

Now when I click on the button "btnClickMe" it throws an exception "Object reference not set to an instance of object".

Please let me know the reason of the exception and how can it be resolved.

Window

answered on 12 Oct 2010

3 answers

101 views

Checkbox Status Incorrect in Floating Panel(?)

Hi,
We have a RadTreeView nested in a RadPanelBar which the user can undock and have floating. While docked the binding for the all data works fine including the state of the checkboxes. However, when the undocked and floating the checkboxes no longer reflect the correct state. The names for the hierarchical data items are displaying correctly so some of the binding is still working but not the state of the checkboxes.

The following is the xaml we are using:

<telerikNavigation:RadPanelBarItem Collapsed="RadPanelBarItem_ExpandedCollapsed" Expanded="RadPanelBarItem_ExpandedCollapsed" >

<telerikNavigation:RadPanelBarItem.Header>

<Grid>

<Grid.ColumnDefinitions>

<ColumnDefinition Width="18" />

<ColumnDefinition />

</Grid.ColumnDefinitions>

<CheckBox Grid.Column="0" IsThreeState="True" IsChecked="{Binding IsDomainsChecked, Mode=TwoWay, NotifyOnTargetUpdated=True}" Click="FilterCheckBox_Click" TargetUpdated="CheckBox_TargetUpdated"/>

<TextBlock Grid.Column="1" Text="Domains"/>

</Grid>

</telerikNavigation:RadPanelBarItem.Header>

<telerikNavigation:RadTreeView

Name="DomainTreeView"

IsOptionElementsEnabled="True"

ItemsOptionListType="CheckList"

IsTriStateMode="True" Checked="TreeView_CheckedUnchecked" Unchecked="TreeView_CheckedUnchecked"

ItemsSource="{Binding Path=DomainEmailTypes}">

<telerikNavigation:RadTreeView.ItemTemplate>

<HierarchicalDataTemplate DataType="{x:Type ViewModels:EmailTypeFilterViewModel}" ItemsSource="{Binding Path=EmailTypes}">

<Grid>

<Grid.ColumnDefinitions>

<ColumnDefinition />

</Grid.ColumnDefinitions>

<TextBlock Grid.Column="0" Text="{Binding Path=Name}"/>

<TextBlock Grid.Column="1" Margin="5,0,5,0" Text="{Binding Path=DisplayCount}" />

</Grid>

<HierarchicalDataTemplate.ItemTemplate>

<DataTemplate>

<Grid>

<Grid.ColumnDefinitions>

<ColumnDefinition />

</Grid.ColumnDefinitions>

<TextBlock Grid.Column="0" Text="{Binding Path=Name}"/>

<TextBlock Grid.Column="1" Margin="5,0,5,0" Text="{Binding Path=DisplayCount}" />

</Grid>

</DataTemplate>

</HierarchicalDataTemplate.ItemTemplate>

</HierarchicalDataTemplate>

</telerikNavigation:RadTreeView.ItemTemplate>

</telerikNavigation:RadTreeView>

</telerikNavigation:RadPanelBarItem>

Any help or insight would be greatly appreciated.

Thank you.

TreeView

answered on 12 Oct 2010

4 answers

151 views

Filtering problem

I have gridview with check boxes that needs a filtering function. The problem with the default filter is that if a user opens the filter dialog an selects an item from the list all of the checked/selected items in the gridview are removed. I thought that I could add the checked items to the filter descriptor just prior to the filter event but it removes everything else from the filter list as well. Does anyone know a way around this problem?
I think what I need is the actual filterdescriptor that is being applied at the time the UI is active. I need to add my filterdescriptor to it or add a columndescriptor.

GridView

answered on 11 Oct 2010

8 answers

219 views

Cancel drop after drop complete

Hello,

I am creating an application that will bring up a messagebox after an item has been dragged and dropped from one treeview to another. I would like the messagebox to prompt the user with a Yes/No after the drop is complete on the second treeview. If the user selects no, the drop can then be canceled.

Thanks
Ryan

RadDragAndDropManager.AddDropInfoHandler(this.CreatedStepItems, new EventHandler<DragDropEventArgs>(this.CreatedStepItems_OnDropInfo));

private void CreatedStepItems_OnDropInfo(object sender, DragDropEventArgs e)

{

if (e.Options.Status == DragStatus.DropComplete)

{

var t = MessageBox.Show("Cancel", "Cancel", MessageBoxButton.YesNo);

if (t == MessageBoxResult.Yes)

//Cancel

else

//Dont

}

TreeView

answered on 11 Oct 2010

1 answer

317 views

Highlight GridViewRow when GridViewCell is selected

I have the RadGridView setup with

SelectionUnit="Cell"

SelectionMode="Extended"

Is there any way to highlight the current row (obviously in some color that is not the same as the cell highlight) when I have selected a cell in it? I was able to make a style that changed the row color when the mouse was over it, but that's not really what I need.

Basically I want it to work like SQL Management Studio does when you click the row number.. it selects the row... but as far as I can tell there is no way to mix the selection mode.

GridView

answered on 11 Oct 2010

3 answers

237 views

Change CellTemplate and CellEditTemplate based on content of another column

I want to change the CellTemplate and CellEditTemplate of GridViewDataColumn, based on the value of another column.

eg. If Column A has drop down box, with two entries: TextBlock and ComboBox. Based on the selection of column A, I want the column B to have that control.

If you can provide me some sample code that accomplishes this it would be very useful.

GridView

answered on 11 Oct 2010

2 answers

1.0K+ views

TreeView SelectedItem doesn't work

Hi, I am building an application where I need to represent some hierarchical data in a tree. The standard WPF tree fell short on many fronts. So I am doing a trial of your WPF controls.

One of the big issues with the standard tree was that it was not (easily) possible to select an item within the tree from outside the tree. I was looking at your documentation, and it clearly shows that you can indeed use the SelectedItem property on your RadTreeView to set the selected item in the tree.

So I have implemented your tree and am trying to use that property to set the item, but I cannot get it to work. I have tried both through declarative binding and by setting the property programmatically, and in either case the RadTreeView does not set the correct item on the tree. It simply does nothing.

What am I doing wrong? If I can get that feature working with your RadTreeView, along with proper node Double-clicking, we will be purchasing at least developer licenses of the WPF RadControls.

Here is the TreeView code I am doing declaratively:

<t:RadTreeView Grid.Column="0" Grid.Row="2"

MinHeight="100" MinWidth="100"

DataContext="{Binding Source={x:Static SizingApp:ProjectManager.Instance}}"

SelectedItem="{Binding CurrentSelected}">

<t:RadTreeView.Resources>

<Style TargetType="{x:Type t:RadTreeViewItem}">

<Setter Property="IsExpanded" Value="True" />

</Style>

<HierarchicalDataTemplate x:Key="LoadTemplate">

<Grid>

<TextBlock Text="{Binding Name}">

<TextBlock.ContextMenu>

<ContextMenu DataContext="{Binding PlacementTarget.DataContext, RelativeSource={RelativeSource Self}}">

<MenuItem InputGestureText="{Resx ResxName=PSSPECApplication.Controls.ProjectControlResources,Key=load_ContextMenu_Edit_InputGestureText}"

Click="MenuItem_EditLoadClick">

<MenuItem.Header>

<TextBlock Text="{Binding Path=Name,

StringFormat={Resx ResxName=PSSPECApplication.Controls.ProjectControlResources,Key=load_ContextMenu_Edit_Header},

Mode=OneWay}" />

</MenuItem.Header>

</MenuItem>

<MenuItem Click="MenuItem_SaveLoadClick">

<MenuItem.Header>

<TextBlock Text="{Binding Path=Name,

StringFormat={Resx ResxName=PSSPECApplication.Controls.ProjectControlResources,Key=load_ContextMenu_Save_Header},

Mode=OneWay}" />

</MenuItem.Header>

</MenuItem>

<MenuItem Header="{Resx ResxName=PSSPECApplication.Controls.ProjectControlResources, Key=load_ContextMenu_SaveAs_Header}"

Click="MenuItem_SaveAsLoadClick" />

<MenuItem InputGestureText="{Resx ResxName=PSSPECApplication.Controls.ProjectControlResources,Key=load_ContextMenu_Delete_InputGestureText}"

Click="MenuItem_RemoveClick">

<MenuItem.Header>

<TextBlock Text="{Binding Path=Name,

StringFormat={Resx ResxName=PSSPECApplication.Controls.ProjectControlResources,Key=load_ContextMenu_Delete_Header},

Mode=OneWay}" />

</MenuItem.Header>

</MenuItem>

<MenuItem Header="{Resx ResxName=PSSPECApplication.Controls.ProjectControlResources,Key=load_ContextMenu_Copy_Header}"

InputGestureText="{Resx ResxName=PSSPECApplication.Controls.ProjectControlResources,Key=load_ContextMenu_Copy_InputGestureText}"

Click="MenuItem_CopyLoadClick" />

</ContextMenu>

</TextBlock.ContextMenu>

</TextBlock>

</Grid>

</HierarchicalDataTemplate>

<HierarchicalDataTemplate x:Key="StepTemplate"

ItemsSource="{Binding Loads}"

ItemTemplate="{StaticResource LoadTemplate}">

<Grid>

<TextBlock Text="{Binding Name}">

<TextBlock.ContextMenu>

<ContextMenu DataContext="{Binding PlacementTarget.DataContext, RelativeSource={RelativeSource Self}}">

<MenuItem InputGestureText="{Resx ResxName=PSSPECApplication.Controls.ProjectControlResources, Key=step_ContextMenu_Edit_InputGestureText}"

Click="MenuItem_EditStepClick">

<MenuItem.Header>

<TextBlock Text="{Binding Path=Name,

StringFormat={Resx ResxName=PSSPECApplication.Controls.ProjectControlResources, Key=step_ContextMenu_Edit_Header},

Mode=OneWay}" />

</MenuItem.Header>

</MenuItem>

<MenuItem Click="MenuItem_SaveStepClick">

<MenuItem.Header>

<TextBlock Text="{Binding Path=Name,

StringFormat={Resx ResxName=PSSPECApplication.Controls.ProjectControlResources, Key=step_ContextMenu_Save_Header},

Mode=OneWay}" />

</MenuItem.Header>

</MenuItem>

<MenuItem Header="{Resx ResxName=PSSPECApplication.Controls.ProjectControlResources, Key=step_ContextMenu_SaveAs_Header}"

Click="MenuItem_SaveAsStepClick" />

<MenuItem InputGestureText="{Resx ResxName=PSSPECApplication.Controls.ProjectControlResources, Key=step_ContextMenu_Delete_InputGestureText}"

Click="MenuItem_RemoveClick">

<MenuItem.Header>

<TextBlock Text="{Binding Path=Name,

StringFormat={Resx ResxName=PSSPECApplication.Controls.ProjectControlResources, Key=step_ContextMenu_Delete_Header},

Mode=OneWay}" />

</MenuItem.Header>

</MenuItem>

<MenuItem Header="{Resx ResxName=PSSPECApplication.Controls.ProjectControlResources, Key=step_ContextMenu_Copy_Header}"

InputGestureText="{Resx ResxName=PSSPECApplication.Controls.ProjectControlResources, Key=step_ContextMenu_Copy_InputGestureText}"

Click="MenuItem_CopyStepClick"/>

<MenuItem InputGestureText="{Resx ResxName=PSSPECApplication.Controls.ProjectControlResources, Key=step_ContextMenu_Paste_InputGestureText}"

IsEnabled="{Binding IsLoadCopied, Source={x:Static SizingApp:ProjectManager.Instance}}"

Click="MenuItem_PasteLoadClick">

<MenuItem.Header>

<TextBlock Text="{Binding CurrentCopiedLoad,

StringFormat={Resx ResxName=PSSPECApplication.Controls.ProjectControlResources, Key=step_ContextMenu_Paste_Header},

Converter={StaticResource NameConverter},

Source={x:Static SizingApp:ProjectManager.Instance},

Mode=OneWay}" />

</MenuItem.Header>

</MenuItem>

<MenuItem Header="{Resx ResxName=PSSPECApplication.Controls.ProjectControlResources, Key=step_ContextMenu_Import_Load_Header}"

Click="MenuItem_OpenLoadClick"/>

<MenuItem Header="{Resx ResxName=PSSPECApplication.Controls.ProjectControlResources, Key=step_ContextMenu_Add_Load_Header}"

ItemsSource="{StaticResource mnuLoadSubmenuCommon}" MenuItem.Click="StepMenuItem_AddLoadClick"/>

</ContextMenu>

</TextBlock.ContextMenu>

</TextBlock>

</Grid>

</HierarchicalDataTemplate>

<HierarchicalDataTemplate x:Key="ProjectTemplate"

ItemsSource="{Binding Steps}"

ItemTemplate="{StaticResource StepTemplate}">

<Grid>

<TextBlock Text="{Binding Name}">

<TextBlock.ContextMenu>

<ContextMenu DataContext="{Binding PlacementTarget.DataContext, RelativeSource={RelativeSource Self}}">

<MenuItem InputGestureText="{Resx ResxName=PSSPECApplication.Controls.ProjectControlResources,Key=project_ContextMenu_Edit_InputGestureText}"

Click="MenuItem_EditProjectClick"

DataContext="{Binding DataContext, RelativeSource={RelativeSource AncestorType={x:Type ContextMenu}}}">

<MenuItem.Header>

<TextBlock Text="{Binding Path=Name,

StringFormat={Resx ResxName=PSSPECApplication.Controls.ProjectControlResources, Key=project_ContextMenu_Edit_Header},

Mode=OneWay}" />

</MenuItem.Header>

</MenuItem>

<MenuItem Click="MenuItem_SaveProjectClick">

<MenuItem.Header>

<TextBlock Text="{Binding Path=Name,

StringFormat={Resx ResxName=PSSPECApplication.Controls.ProjectControlResources, Key=project_ContextMenu_Save_Header},

Mode=OneWay}" />

</MenuItem.Header>

</MenuItem>

<MenuItem Header="{Resx ResxName=PSSPECApplication.Controls.ProjectControlResources, Key=project_ContextMenu_SaveAs_Header}"

Click="MenuItem_SaveAsProjectClick"/>

<MenuItem InputGestureText="{Resx ResxName=PSSPECApplication.Controls.ProjectControlResources, Key=project_ContextMenu_Delete_InputGestureText}"

Click="MenuItem_RemoveClick">

<MenuItem.Header>

<TextBlock Text="{Binding Path=Name,

StringFormat={Resx ResxName=PSSPECApplication.Controls.ProjectControlResources, Key=project_ContextMenu_Delete_Header},

Mode=OneWay}" />

</MenuItem.Header>

</MenuItem>

<MenuItem Header="{Resx ResxName=PSSPECApplication.Controls.ProjectControlResources, Key=project_ContextMenu_Copy_Header}"

InputGestureText="{Resx ResxName=PSSPECApplication.Controls.ProjectControlResources, Key=project_ContextMenu_Copy_InputGestureText}"

Click="MenuItem_CopyProjectClick" />

<MenuItem InputGestureText="{Resx ResxName=PSSPECApplication.Controls.ProjectControlResources, Key=project_ContextMenu_Paste_InputGestureText}"

IsEnabled="{Binding IsStepCopied, Source={x:Static SizingApp:ProjectManager.Instance}}"

Click="MenuItem_PasteStepClick">

<MenuItem.Header>

<TextBlock Text="{Binding CurrentCopiedStep,

StringFormat={Resx ResxName=PSSPECApplication.Controls.ProjectControlResources, Key=project_ContextMenu_Paste_Header},

Converter={StaticResource NameConverter},

Source={x:Static SizingApp:ProjectManager.Instance},

Mode=OneWay}" />

</MenuItem.Header>

</MenuItem>

<MenuItem Header="{Resx ResxName=PSSPECApplication.Controls.ProjectControlResources, Key=projectTree_Project_ImportStep_Header}"

Click="MenuItem_OpenStepClick" />

<MenuItem Header="{Resx ResxName=PSSPECApplication.Controls.ProjectControlResources, Key=projectTree_Project_AddStep_Header}"

Click="MenuItem_AddStepsClick"/>

</ContextMenu>

</TextBlock.ContextMenu>

</TextBlock>

</Grid>

</HierarchicalDataTemplate>

</t:RadTreeView.Resources>

<t:RadTreeViewItem Header="{Resx ResxName=PSSPECApplication.Controls.ProjectControlResources, Key=projectTree_Header}"

ItemsSource="{Binding Projects}"

IsExpanded="True"

ItemTemplate="{StaticResource ProjectTemplate}">

<t:RadTreeViewItem.ContextMenu>

<ContextMenu DataContext="{Binding PlacementTarget.DataContext, RelativeSource={RelativeSource Self}}">

<MenuItem Header="{Resx ResxName=PSSPECApplication.Controls.ProjectControlResources, Key=projectTree_NewProject_Header}"

Icon="{Resx ResxName=PSSPECApplication.Controls.ProjectControlResources, Key=addProject_Image_Small}"

Click="NewProject_Click"/>

<MenuItem Header="{Resx ResxName=PSSPECApplication.Controls.ProjectControlResources, Key=projectTree_OpenProject_Header}"

Icon="{Resx ResxName=PSSPECApplication.Controls.ProjectControlResources, Key=openProject_Image_Small}"

Click="OpenProject_Click"/>

<MenuItem Header="{Resx ResxName=PSSPECApplication.Controls.ProjectControlResources, Key=projectTree_SaveAll_Header}"

InputGestureText="{Resx ResxName=PSSPECApplication.Controls.ProjectControlResources, Key=projectTree_SaveAll_InputGestureText}"

Click="SaveAllProjects_Click"/>

<MenuItem InputGestureText="{Resx ResxName=PSSPECApplication.Controls.ProjectControlResources, Key=projectTree_Paste_InputGestureText}"

IsEnabled="{Binding IsProjectCopied, Source={x:Static SizingApp:ProjectManager.Instance}}"

Click="MenuItem_PasteProjectClick">

<MenuItem.Header>

<TextBlock Text="{Binding CurrentCopiedProject,

StringFormat={Resx ResxName=PSSPECApplication.Controls.ProjectControlResources, Key=projectTree_Paste_Header},

Converter={StaticResource NameConverter},

Source={x:Static SizingApp:ProjectManager.Instance},

Mode=OneWay}" />

</MenuItem.Header>

</MenuItem>

</ContextMenu>

</t:RadTreeViewItem.ContextMenu>

</t:RadTreeViewItem>

</t:RadTreeView>

Now the Projects property that the first node ItemsSource is bound to works just fine. However, the SelectedItem property on the TreeView itself seems to do nothing. Both the Projects property and the CurrentSelected property are both DependencyProperties. Both have call back event handlers that fire off INotifyPropertyChanged PropertyChanged event handlers indicating the properties have changed. I have other controls on the application that are bound to CurrentSelected and they change along with CurrentSelected just fine.

So why doesn't the RadTreeView also?

TreeView

answered on 11 Oct 2010

1 answer

160 views

RadButton with telerikGrid:RadGridViewCommands.CommitEdit

Hi,

Having a Radbutton

<telerik:RadButton Width="150" Click="RadButton_Click" Content="Save insert/edit" Margin="0,0,5,0" x:Name="btnSave"

Command="telerikGrid:RadGridViewCommands.CommitEdit" CommandTarget="{Binding ElementName=radGridPhases}" />

I have exsperienced that the click event does not get called, is this correct behavior?.

I want to also update my database, when I click this button. How can I run some exstra code, when clicking this button.

Best regards

Ole

GridView

answered on 11 Oct 2010

7 answers

220 views

Additional data format for clipboard

Hi everybody,

the clipboard functionality of the RadGridView is exactly what I need to exchange data with excel. But we also have the requirement to provide the data in additional application specific format. Is there a way to use the standard clipboard functionality for text format and combine it with own functions to provide the data in an application specific format?

Regards Uli

GridView

answered on 11 Oct 2010