Questions on UI for WPF Forum

8 answers

127 views

Validating Data on a Property Level can't catch the error

I have created RadGridview to check the Validating Data on a Property Level. When i run the code and give invalid value, exception is thrown but it wouldn't been caught by the RadGridView. I am Using
WPF 4.0 Version 2010.2 924

Here is the Code

<Window x:Class="WpfApplication1.Window1"

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

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

Title="Window1" Height="300" Width="565" xmlns:telerik="http://schemas.telerik.com/2008/xaml/presentation" Loaded="Window_Loaded">

<Grid>

<telerik:RadGridView Name="radGridView1" AddingNewDataItem="radGridView1_AddingNewDataItem" ShowInsertRow="True">

</telerik:RadGridView>

</Grid>

</Window>

using System;

using System.Windows;

using System.Collections.ObjectModel;

namespace WpfApplication1

{

/// <summary>

/// Interaction logic for Window1.xaml

/// </summary>

public partial class Window1 : Window

{

public Window1()

{

InitializeComponent();

}

public ObservableCollection<Employee> GetEmployees()

{

ObservableCollection<Employee> employees = new ObservableCollection<Employee>();

return employees;

}

private void radGridView1_AddingNewDataItem(object sender, Telerik.Windows.Controls.GridView.GridViewAddingNewEventArgs e)

{

e.NewObject = new Employee();

}

private void Window_Loaded(object sender, RoutedEventArgs e)

{

this.radGridView1.ItemsSource = this.GetEmployees();

}

public class Employee

{

string _FirstName;

public string FirstName

{

get { return _FirstName; }

set

{

if (value.Length > 5)

{

throw new Exception("Firstname must be less than 6");

}

_FirstName = value;

}

check the attachment for error screen shot.

GridView

answered on 05 Jun 2012

3 answers

130 views

Word 2007 options like dialog

I there any code snippet (or already existing control) on how to make an option dialog like the one of Microsoft Word 2007.

I would like to use Telerik controls so that I can take advantage of the themes.

I'm using PRISM and my goal is to make a "options service" component in which different modules can push options view.

Regards,

Nicolas

General Discussions

answered on 05 Jun 2012

7 answers

356 views

Table width when exporting with RadDocument

Hi,

I've implemented this helpful example code (http://demos.telerik.com/silverlight/#GridView/PrintAndExportWithRadDocument) and it is all working as expected, however the table that is created does not take up the whole width of the page. I notice it uses the column widths of the RadGridView, however they are not ideal in the A4 pdf. I would like the table that is created for the pdf to size itself based on content. Is this possible, and if so, how would I do it? I figure it's got something to do with this line:

cell.PreferredWidth = new TableWidthUnit((float)columns[i].ActualWidth);

Thanks

GridView

answered on 05 Jun 2012

1 answer

139 views

RadTreeView + QueryableEntityCollectionView + Drag & Drop

I'm working on a project where I have a large amount of data stored in a database organized into a tree. I'm using the EntityFramework, so I'm using the QueryableEntityCollectionView to filter my data and a RadTreeView to display it.

However, I also need support for drag & drop to add/move/delete items. By default, the RadTreeView won't let me drop into this tree as it is. If it was an IList or an ObservableCollection, it will let me, but I need to be able to refresh/filter the visible nodes in the tree.

Is there a way to override the d&d support in RadTreeView to allow drops, and run custom code on drop complete?

I did see this post (http://www.telerik.com/community/forums/silverlight/treeview/use-drag-and-drop-to-rearrange-items-and-then-persist-order-back-to-database.aspx) but it's for silverlight and I don't think the WCF side is needed for a WPF + EF application.

Any advice?
Thanks!

TreeView

answered on 05 Jun 2012

0 answers

124 views

Double-fired OnDrop for listbox inside RadTileView

When the list box lives inside a RadTileView, the OnDrop event will get fired twice with the same parameters.

<telerik:RadTileView>

<telerik:RadTileViewItem>

<Grid x:Name="LayoutRoot" Background="White">

<Grid.Resources>

<Style TargetType="ListViewItem">

<Setter Property="telerik:DragDropManager.AllowCapturedDrag" Value="True"></Setter>

</Style>

<DataTemplate x:Key="ApplicationTemplate">

<StackPanel Orientation="Horizontal">

<TextBlock Margin="5" Text="{Binding Name}" VerticalAlignment="Center"></TextBlock>

</StackPanel>

</DataTemplate>

</Grid.Resources>

<Grid.ColumnDefinitions>

<ColumnDefinition></ColumnDefinition>

</Grid.ColumnDefinitions>

<ListView x:Name="ApplicationList" ItemTemplate="{StaticResource ApplicationTemplate}" AllowDrop="True"/>

<ListView x:Name="MyAppList" Background="Gray" Grid.Column="1"

ItemTemplate="{StaticResource ApplicationTemplate}" AllowDrop="True"/>

</Grid>

</telerik:RadTileViewItem>

</telerik:RadTileView>

public partial class MainWindow : Window

{

public MainWindow()

{

InitializeComponent();

ObservableCollection<Item> items = new ObservableCollection<Item>();

for (int i = 1; i <= 10; i++)

items.Add(new Item() { Name = string.Format("item {0}", i) });

ApplicationList.ItemsSource = items;

MyAppList.ItemsSource = new ObservableCollection<Item>();

DragDropManager.AddDragInitializeHandler(ApplicationList, OnDragInitialize);

DragDropManager.AddDragInitializeHandler(MyAppList, OnDragInitialize);

DragDropManager.AddGiveFeedbackHandler(ApplicationList, OnGiveFeedback);

DragDropManager.AddGiveFeedbackHandler(MyAppList, OnGiveFeedback);

DragDropManager.AddDragDropCompletedHandler(ApplicationList, OnDragCompleted);

DragDropManager.AddDragDropCompletedHandler(MyAppList, OnDragCompleted);

DragDropManager.AddDropHandler(ApplicationList, OnDrop);

DragDropManager.AddDropHandler(MyAppList, OnDrop);

}

private void OnDragInitialize(object sender, DragInitializeEventArgs args)

{

args.AllowedEffects = DragDropEffects.Move;

//args.AllowedEffects = DragDropEffects.All;

args.Data = ((FrameworkElement)args.OriginalSource).DataContext;

args.DragVisual = new ContentControl { Content = args.Data, ContentTemplate = LayoutRoot.Resources["ApplicationTemplate"] as DataTemplate };

}

private void OnGiveFeedback(object sender, Telerik.Windows.DragDrop.GiveFeedbackEventArgs args)

{

System.Diagnostics.Trace.WriteLine(string.Format("{0} - OnGiveFeedback sender={1}", DateTime.Now, sender));

args.SetCursor(Cursors.Arrow);

args.Handled = true;

}

private void OnDrop(object sender, Telerik.Windows.DragDrop.DragEventArgs args)

{

System.Diagnostics.Trace.WriteLine(string.Format("{0} - OnDrop sender={1}", DateTime.Now, sender));

((IList)(sender as ListBox).ItemsSource).Add(((DataObject)args.Data).GetData(typeof(Item)));

}

public void OnDragCompleted(object sender, Telerik.Windows.DragDrop.DragDropCompletedEventArgs args)

{

System.Diagnostics.Trace.WriteLine(string.Format("{0} - OnDragCompleted sender={1}", DateTime.Now, sender));

((IList)(sender as ListBox).ItemsSource).Remove(args.Data);

}

public class Item

{

public string Name { get; set; }

}

DragAndDrop

asked on 05 Jun 2012

0 answers

77 views

Limit drop target

I have implemented a basic drag-n-drop using Telerik's new DragDropManager, pretty much the same as instructed here http://www.telerik.com/help/wpf/dragdropmanager-getting-started.html except that I am using ListView instead of ListBox.

Although it works, but I need help on the following two things:

How to I limit the drag-n-drop so that it can only happen between the two listviews? i.e. disallow dropping to the same listview as the drag source.
How to change cursor based on the above criteria? I try to monitor OnGiveFeedback(), but the sender is always the drag source...

DragAndDrop

asked on 05 Jun 2012

0 answers

89 views

Replace GridViewGroupFooterCell

Hi guys,
basically I have a class derived from GridViewGroupFooterCell, and I need to replace GridViewGroupFooterCell with the derived one in the GridView. Do you guys have any idea how I can archive this?

Thanks in advance.

-Henry

GridView

asked on 05 Jun 2012

3 answers

82 views

Frozen groupheaders

Is it possible to 'freeze' the groupheader row?
This way the current group would always be visible while (vertically) scrolling the data in the gridview.

GridView

answered on 05 Jun 2012

1 answer

168 views

Gridview Visiblity based on ComboBox value & Passing Observable Collection as Converter Parameter

Hi,

I have a requirement

Requirement 1# : Inside a Hirerchy Template placed 2 Grids where in

1st grid 3 columns where 1 column has Combo Box loaded with Values.

For ex: Football, Disco

If i select Football, 2 grid placed inside Hirechy Template should be visible or else visbility of that grid should be collapsed.

How can i solve this.

Requirement 2#: Can i pass Observable collection as converter parameter

<Radcombobox selecteditem={Binding collection, converter={}} -> to show as like A,B,C (Selected Items as comma separated)

<controls:RadGridView Name="clubsGrid"

ItemsSource="{Binding Clubs}" Grid.Row="0"

AutoGenerateColumns="False" IsReadOnly="True" SelectionMode="Single" DataContext="{StaticResource MyViewModel}">

<controls:RadGridView.ChildTableDefinitions>

<controls:GridViewTableDefinition/>

</controls:RadGridView.ChildTableDefinitions>

<controls:RadGridView.Columns>

<controls:GridViewDataColumn DataMemberBinding="{Binding Name}"

Header="Est."></controls:GridViewDataColumn>

<controls:GridViewDataColumn DataMemberBinding="{Binding Established}"></controls:GridViewDataColumn>

</controls:RadGridView.Columns>

<controls:RadGridView.HierarchyChildTemplate>

<DataTemplate>

<controls:RadGridView Name="playersGrid"

ItemsSource="{Binding Players}"

AutoGenerateColumns="False" EnableRowVirtualization="False" EnableColumnVirtualization="False"

> 

                                        <controls:RadGridView.ChildTableDefinitions> 
                <controls:GridViewTableDefinition/> 
            </controls:RadGridView.ChildTableDefinitions>

<controls:RadGridView.Columns>

<controls:GridViewDataColumn DataMemberBinding="{Binding Name}">

</controls:GridViewDataColumn>

<controls:GridViewDataColumn DataMemberBinding="{Binding SelectedItem.Name}">

<controls:GridViewDataColumn.CellEditTemplate>

<DataTemplate>

<RadControls:RadComboBox ItemsSource="{Binding Hobbies, Mode=OneTime}" SelectedItem="{Binding SelectedItem,Mode=TwoWay}" SelectedValue="Name" DisplayMemberPath="Name" >

</RadControls:RadComboBox>

</DataTemplate>

</controls:GridViewDataColumn.CellEditTemplate>

</controls:GridViewDataColumn

</controls:RadGridView.Columns

> 

                                    
<
 
 
telerik:RadGridView.HierarchyChildTemplate>
 
 
 
 
<HierarchicalDataTemplate>
 


                                    <controls:RadGridView Name="Hobbies" 
                                     ItemsSource="{Binding Hobbies}" 
                                     AutoGenerateColumns="True" EnableRowVirtualization="False" EnableColumnVirtualization="False"/>

</controls:RadGridView

> 

</
 
 
HierarchicalDataTemplate>
 
 
 
 
</telerik:RadGridView.HierarchyChildTemplate>

</DataTemplate>

</controls:RadGridView.HierarchyChildTemplate>

</controls:RadGridView>

GridView

answered on 05 Jun 2012

1 answer

76 views

FilterDialog under grid

I,

in my project I use Telerik V2010.3.1314.35 and with my RadGridView, when I click on the filter icon in a column header, sometime the filter dialog appear behind the grid ?!?

Thank's

GridView

answered on 05 Jun 2012