Questions on UI for WPF Forum

1 answer

328 views

Control Expander on SelectionChanged event

Hi,

I have WPF 2009 SP2 (2009.2.701.35). I am attempting to control the expander (+ - ) on the grid. I use the following event

PreviewDataRecordCreate for the intialization of the grid to control the expander which works well. However i would like to validate the expander when the user selects the row (selectinchanged event)
I have tried to cast to the ExpandableDataRecord but this is always null. I would like validate that the expander is valid i.e. i do have data for the child grid. I am currently calling a rebind of the grid view but this does not help. I dont want to remove the row and re-add it as that seems to be a hack.

Secondly is there an event when the user clicks on the expander (+-) as this does cause a selectionchanged event?

The last question is that there is allot of classes marked as deprecated such as ExpandableDataRecord is there mechanism to look at which classes we should use instead as the forum posts would refer to the old classes?

Kind Regards,

Clinton

GridView

answered on 31 Aug 2009

1 answer

76 views

it is possible to not display a value?

I mean, suppose you have a line graph with 20 value but i don't want 4th and 8th values so that my line is broken because 4th and 8th values are invalid.
It is possible?

Chart

answered on 31 Aug 2009

2 answers

312 views

RadTabItem.ContentTemplateSelector

I am trying to bind a collection of workspaces to the RadTabControl and use a DataTemplateSelector to choose the DataTemplate for the content based on which type of workspace is being rendered but the RadTabItem does not appear to use the DataTemplateSelector that I set. Here is an example of my code:

    
                    <telerik:RadTabControl ItemsSource="{Binding Workspaces}"> 
        
                        <telerik:RadTabControl.Resources> 
        
                            <Style TargetType="{x:Type telerik:RadTabItem}"> 
        
                                <Setter Property="ContentTemplateSelector"> 
        
                                    <Setter.Value> 
        
                                        <local:TabItemContentTemplateSelector /> 
        
                                    </Setter.Value> 
        
                                </Setter> 
        
                            </Style> 
        
                        </telerik:RadTabControl.Resources> 
        
                    </telerik:RadTabControl>

I put a breakpoint in the SelectTemplate method but it never reaches it.

Has anyone got this to work?

TabControl

answered on 29 Aug 2009

4 answers

297 views

[Solved] TabStripPlacement not working as expected

Hello

I am using the wpf tab control and want the tabs to be on the left hand side with my content on the right hand side. I was looking into the documentation at (http://www.telerik.com/help/wpf/radtabcontrol-appearance.html) and saw that you can set the property "TabStripPlacement" to left. When I do this, the tab goes across the screen with my content below the tab.

I also look at the following page for silverlight (http://demos.telerik.com/Silverlight/#TabControl/TabStripOrientation) and your getting the same effect by setting the same property.

Example of what I want:
[tab1] content display for selected tab
[tab2]
[tab3]
...

Here is what I am getting:
[tab1]
[tab2]
[tab3]
Content below tabs

Where am I going wrong?

Thanks

TabControl

answered on 28 Aug 2009

2 answers

231 views

[Solved] Cannot add Column Dynamically

I just started using Telerik Grid instead of MS based Grid.
I just tried to Add and clear columns dynamically into the grid but I couldn't find the appropirate functions in intellisense.
I tried "this.radResult.Columns.Add(dyncol)" but, I Couldn't find "Add" in intellisense, couldn't find "Clear" method in intellisense as either.

    
            <UserControl    x:Class="SolutionQ.Eclipse.Silverlight.Content.Search.xxxx.xxxx.xxxxxxxx" 
        
                            xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"   
        
                            xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"   
        
                            xmlns:dg="clr-namespace:System.Windows.Controls;assembly=System.Windows.Controls.Data" 
        
                            xmlns:RadNav="clr-namespace:Telerik.Windows.Controls;assembly=Telerik.Windows.Controls.Navigation" 
        
                            xmlns:controls="clr-namespace:SolutionQ.Eclipse.Silverlight.Content.Controls"            
        
                            xmlns:RadGrid="clr-namespace:Telerik.Windows.Controls;assembly=Telerik.Windows.Controls.GridView" 
        
                            xmlns:GridView="clr-namespace:Telerik.Windows.Controls.GridView;assembly=Telerik.Windows.Controls.GridView"   
        
            > 
        
                <Grid x:Name="LayoutRoot" Background="White">  
        
                    <Grid.RowDefinitions> 
        
                        <!--xmlns:Ra=""--> 
        
                        <RowDefinition Height="Auto" /> 
        
                        <RowDefinition Height="1*" /> 
        
                    </Grid.RowDefinitions> 
        
                    <Grid.ColumnDefinitions> 
        
                        <ColumnDefinition Width="1*" /> 
        
                    </Grid.ColumnDefinitions> 
        
                    <!-- Filtering ToolBar --> 
        
                    <RadNav:RadToolBarTray Grid.Row="0" Grid.Column="0" Style="{StaticResource style_DataGridRadToolBarTray}">  
        
                        <RadNav:RadToolBar x:Name="rtb_Filter" Style="{StaticResource style_RadToolBar}">  
        
                            <!-- New Clause Button --> 
        
                            <Button x:Name="btn_ExportToExcel" Tag="btn_ExportToExcel" Click="btn_Menu_Click" ToolTipService.ToolTip="Export to Excel Format">  
        
                                <controls:IconAndLabelControl Icon="Icons/PlaceHolderIcon.xaml" Label="Export To Excel" /> 
        
                            </Button> 
        
                            <Button x:Name="btn_ViewResults" Tag="btn_ViewResults" Click="btn_Menu_Click" ToolTipService.ToolTip="View Results">  
        
                                <controls:IconAndLabelControl Icon="Icons/PlaceHolderIcon.xaml" Label="View Results" /> 
        
                            </Button> 
        
                        </RadNav:RadToolBar> 
        
                    </RadNav:RadToolBarTray> 
        
                    <!--<dg:DataGrid x:Name="Result" Grid.Row="1" Grid.Column="0" AutoGenerateColumns="False" ItemsSource="{Binding Path=Items, Mode=TwoWay}" Style="{StaticResource style_GenericDataGrid}" CellStyle="{StaticResource style_GenericDataGridCell}" ColumnHeaderStyle="{StaticResource style_GenericDataGridColumnHeader_LeftAligned}" RowHeaderStyle="{StaticResource style_GenericDataGridRowHeader}" RowStyle="{StaticResource style_GenericDataGridRow}">  
        
                    </dg:DataGrid>--> 
        
                    <RadGrid:RadGridView x:Name="radResult" Grid.Row="1" Grid.Column="0" AutoGenerateColumns="False" > 
        
                    <!--ItemsSource="{Binding Path=Items, Mode=TwoWay}"--> 
        
                    </RadGrid:RadGridView> 
        
                </Grid> 
        
            </UserControl>

At code behind side I am using following namespaces:

    
            using System;  
        
            using System.Collections.Generic;  
        
            using System.Linq;  
        
            using System.Net;  
        
            using System.Windows;  
        
            using System.Windows.Controls;  
        
            using System.Windows.Documents;  
        
            using System.Windows.Input;  
        
            using System.Windows.Media;  
        
            using System.Windows.Media.Animation;  
        
            using System.Windows.Shapes;  
        
            // Telerik using     
        
            using Telerik.Windows;  
        
            using Telerik.Windows.Data;  
        
            using Telerik.Windows.Controls;  
        
            using Telerik.Windows.Controls.GridView;  
        
            using Telerik.Windows.Controls.GridView.Cells;  
        
            // add using     
        
            using System.Collections.ObjectModel;  
        
            using System.Windows.Browser;  
        
            using System.ComponentModel;  
        
            using System.Collections;  
        
            using System.Windows.Controls.Primitives;

    
            void tabPreview_Loaded(object sender, RoutedEventArgs e)   
        
            {  
        
                BuildColumns();   
        
            }   
        
            private void BuildColumns()   
        
            {  
        
               this.radResult.Columns.Clear(); //<-- This method doesnt show in intellisense, neither Add method will show up here   
        
            }

Am I doing anything wrong here?

GridView

answered on 28 Aug 2009

2 answers

166 views

Problem in RadGridView, when used with pagination

Hello telerik,

I have tried to implement pagination using RadGridview, i have downloaded the latest WPF Q2 SP1 samples.. and looked into the example in GridView -> Performance - > Server page, sort etc...

When i tried to group the columns by dragging the column header on to the header droppable zone, items have been grouped.

but when i tried to change the current page to some other page by clicking any number on the Pagination control and after that when i tried to group the columns, it is throwing exception...

Is this a bug?

Reproduce steps:

1) Launched the C# Samples from Start -> Programs -> Telerik

2) Select Grid View control -> Performance -> Server page, sort etc...Now able to see the radgrid view with pagination on the right panel

3) Click on second page ("2") on the pagination control

4) Drag any column header to group, I have dragged "Company Name" column.. Now error is thrown...

When i tried to debug i fournd the following as the inner exception:

"Unable to cast object of type 'Telerik.Windows.Examples.Customer' to type 'Telerik.Windows.Data.IGroup'."

Thanks,

Kranthi

GridView

answered on 28 Aug 2009

1 answer

138 views

themes for Q2 is broken

the predefined themes for q2 is broken. We installed Q2 and themes no longer display for the grid. We uninstalled Q2 and went back to Q1 and themes display fine. Have not tried the work around for winforms of setting the theme from code in the initialize event. Will let you know.

GridView

answered on 28 Aug 2009

1 answer

121 views

Date And Time Picker

I want to use the RadDatePicker and RadTimePicker together but bound to one datetime object. Do you have an example of how to do this?

Thanks,

Billy Jacobs

TimePicker

answered on 28 Aug 2009

1 answer

153 views

Expand PanelBarItem in the code-behind file

Hello Telerik,

I am using RadPanelBar in one of my application, Now i need to expand one of the panelbaritems from one of my function in the code-behind.

for example i need to expand the third item in panel bar when i click on a button.

Consider I am binding a list of "Car" objects to a panelbar, now when i am looping through the items of panelbar i am getting each car item..

In this case how to i expand the "n-th" item of panelbar..

expecting a solution asap...

thanks,

- Kranthi

PanelBar

answered on 27 Aug 2009

1 answer

122 views

Filter Child Grid

Hello
I want to filter my child grid
when I watch the DateView dv it is filtered
but in the child grid I still see all the rows and not only the filtered rows
this is my code

    
             private void OnChildGridLoaded(object sender, RoutedEventArgs e)  
        
                    {  
        
                        // Pull data from the detail table based on the relation.  
        
                        var dataRowView = (DataRowView)((RadGridView)sender).ParentRow.DataContext;  
        
                        var ds = dataRowView.DataView.Table.DataSet;  
        
                        var childData = dataRowView.CreateChildView(ds.Relations["BudgetRelation"]);  
        
                        if (((ComboBoxValues.ComboValues)cmbActivityType.SelectedValue).Id != 0)  
        
                        {  
        
                            dv = new DataView(childData.ToTable(), "ActivityTypeID=" + ((ComboBoxValues.ComboValues)cmbActivityType.SelectedValue).Id, "", DataViewRowState.CurrentRows);  
        
                            ((RadGridView)sender).DataContext = dv;  
        
                        }  
        
                        else   
        
                            ((RadGridView)sender).DataContext = childData;  
        
                        ((GridViewComboBoxColumn)((RadGridView)sender).Columns["ActivityTypeName"]).ItemsSource = ComboBoxValues.GetComboValues(dtActivityType);  
        
                    }

Thanks

By the way, I'm still waiting for an answer about second child hierarchy.

GridView

answered on 27 Aug 2009