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TreeListView question
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This is a migrated thread and some comments may be shown as answers.
Fabiana
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Fabiana asked on 05 May 2010, 12:46 PM
Hello! I would like to know how to remove a second line in RadTreeLIstView, with the text "PersonName". I would like to appear just First and Last Name when click in RadTreeLIstView. I created a RadTreeListView with 2 columns and a NamedLIst() class.

Another question is: I inserted IsEditable="True", but I can´t edit, why ?



See my example and attached image:

-----------------------------------------MainPage.xaml ----------------------------
<UserControl x:Class="SilverlightApplication1.MainPage"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:local="clr-namespace:SilverlightApplication1"
        xmlns:telerik="clr-namespace:Telerik.Windows.Controls;assembly=Telerik.Windows.Controls"
        xmlns:nav="clr-namespace:Telerik.Windows.Controls;assembly=Telerik.Windows.Controls.Navigation"
             mc:Ignorable="d" xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
             xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
             Height="213" Width="469" xmlns:my="clr-namespace:Telerik.Windows.Controls.TreeView;assembly=Telerik.Windows.Controls.Navigation">


    <nav:RadTreeListView Background="White" x:Name="RadTreeListViewTest" BorderBrush="#a9a9a9" BorderThickness="1" HorizontalContentAlignment="Center" Width="415" Height="170"
                         IsDragDropEnabled="False" IsDragPreviewEnabled="False" IsDragTooltipEnabled="False"
                                                    SelectionMode="Single"
                                                    IsSingleExpandPath="False"
                                                    IsExpandOnSingleClickEnabled="True"
                                                    IsLineEnabled="True" IsEditable="True">

        <nav:RadTreeListView.Columns>

            <nav:RadColumn Header="First Name" PropertyName="FirstName" Width="150" IsEditable="True" >
                <nav:RadColumn.CellTemplate>
                    <DataTemplate>
                        <TextBlock Foreground="#284869" Text="{Binding FirstName}" VerticalAlignment="Center" />
                    </DataTemplate>
                </nav:RadColumn.CellTemplate>
            </nav:RadColumn>

            <nav:RadColumn Header="Last Name" PropertyName="LastName" Width="150" IsEditable="True">
                <nav:RadColumn.CellTemplate>
                    <DataTemplate>
                        <TextBlock Foreground="#284869" Text="{Binding LastName}" VerticalAlignment="Center" />
                    </DataTemplate>
                </nav:RadColumn.CellTemplate>
            </nav:RadColumn>



        </nav:RadTreeListView.Columns>


    </nav:RadTreeListView>

</UserControl>

----------------------------------MainPage.xaml.cs-------------------------------

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;
using System.Collections;
using System.Collections.ObjectModel;


namespace SilverlightApplication1
{
    public partial class MainPage : UserControl
    {
        public MainPage()
        {
            InitializeComponent();

             //Add only Folders, after click add parents...
            IList itemsSource = new ObservableCollection<object>();
            itemsSource = new NameList();

            this.RadTreeListViewTest.ItemsSource = itemsSource;

        
        }
    }
}



------------------------------NamedList() class--------------------------



using System;
using System.Net;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Documents;
using System.Windows.Ink;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Animation;
using System.Windows.Shapes;
using System.Collections.ObjectModel;


    public class NameList : ObservableCollection<PersonName>
    {
        public NameList(): base()
        {
            Add(new PersonName("XX", "11"));
            Add(new PersonName("WW", "22"));
            Add(new PersonName("AA", "33"));
            Add(new PersonName("QQ", "44"));
            Add(new PersonName("RR", "55"));
        }
    }

    public class PersonName
    {
        private string firstName;
        private string lastName;

        public PersonName(string first, string last)
        {
            this.firstName = first;
            this.lastName = last;
        }

        public string FirstName
        {
            get { return firstName; }
            set { firstName = value; }
        }

        public string LastName
        {
            get { return lastName; }
            set { lastName = value; }
        }
    }



9 Answers, 1 is accepted

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Miroslav
Telerik team
answered on 05 May 2010, 03:13 PM
Hello Fabiana,

This PersonName string comes from the default ItemTemplate of the TreeListVIew. The ItemTemplate is used as a details view in this case.

Assigning an empty data template (containing just a Grid for example) should hide this.

Please note that using inline templates in SL4 may lead to bad memory leaks, more info here (this is due to a bug):

http://forums.silverlight.net/forums/t/171739.aspx

All the best,
Miroslav
the Telerik team

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Fabiana
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Rank 1
answered on 05 May 2010, 05:04 PM
Hello Miroslav.

Thank you for information, but I am having some questions using RadTreeListView in all my test application before buy Telerik Controls for silverlight. I know that is not a final version, but if possible, can you change my RadTreeListView, to exclude details line in each node, and resolve memory leak? Can you send for me a good way to do it? Because I will use this similar code in an application to show for people, and they will decide if we will buy telerik, based on performance, etc... etc...So it´s very importante for us before decide something. Thank you very much!!



 <nav:RadTreeListView Background="White" x:Name="RadTreeListViewTest" BorderBrush="#a9a9a9" BorderThickness="1" HorizontalContentAlignment="Center" Width="415" Height="170"
                         IsDragDropEnabled="False" IsDragPreviewEnabled="False" IsDragTooltipEnabled="False"
                                                    SelectionMode="Single"
                                                    IsSingleExpandPath="True"
                                                    IsExpandOnSingleClickEnabled="True"
                                                    IsLineEnabled="True" IsEditable="True">
        
  
            <nav:RadTreeListView.Columns>

            <nav:RadColumn Header="First Name" PropertyName="FirstName" Width="150" IsEditable="True">
                
                <nav:RadColumn.CellTemplate>
                    <DataTemplate >
                       <TextBlock Foreground="#284869" Text="{Binding FirstName}" VerticalAlignment="Center" />  
                    </DataTemplate>
                </nav:RadColumn.CellTemplate>
            </nav:RadColumn>

            <nav:RadColumn Header="Last Name" PropertyName="LastName" Width="150" IsEditable="True">
                <nav:RadColumn.CellTemplate>
                    <DataTemplate>
                        <TextBlock Foreground="#284869" Text="{Binding LastName}" VerticalAlignment="Center" />
                    </DataTemplate>
                </nav:RadColumn.CellTemplate>
            </nav:RadColumn>



        </nav:RadTreeListView.Columns>


    </nav:RadTreeListView>
0
Miroslav
Telerik team
answered on 06 May 2010, 02:21 PM
Hi Fabiana,

Of course, I can do this for you.

The attached project is based on the code you pasted and has the changes I mentioned. It is a Silverlight 4 project, VS 2010.

Do get back to us if you have questions or need more help.

All the best,
Miroslav
the Telerik team

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Fabiana
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Rank 1
answered on 06 May 2010, 03:06 PM
Hello Miroslav!!

Thank you very much for project. Now, I am stating understand this control. Before you sent this example for me, I created a ticket, ... so ignore my ticket, I will close it now!

I have just 2 questions based in this modified example:

1) "LastName" column  data into a combobox control. How to do it ?
2) User will edit just "FirstName" column data. How to do it ?

Can you modify your example ? After this, I can continuous with my application tester...
Thank you very much!
0
Miroslav
Telerik team
answered on 06 May 2010, 03:27 PM
Hi Fabiana,

You can put a ComboBox as the cell's content. The ItemsSource of the ComboBox may come from different sources. I have shown just one way to bind it but this may not always be a good approach.

The first column can be edited by setting its CellEditTemplate.

The modified project is attached.

Hopefully this will help you,

All the best,
Miroslav
the Telerik team

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Fabiana
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Rank 1
answered on 06 May 2010, 04:41 PM
Hi Miroslav!
Thank you very much for your example. Now I can continuous with my tests with RadTreeListView!

0
Fabiana
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Rank 1
answered on 10 May 2010, 06:14 PM
Hi Miroslav.

Based in your good example, I have one more question: I want to insert a column that show status ( "read" for value 1 and "unread" for value 2). How to do it?
I created a Status column, with Combobox... I changed Class... but how to insert JUST  "read" and "unread" options in this combo status, and select correct status based on binding class ( 1 or 2 ) ?
Thanks!!!




<UserControl x:Class="SilverlightApplication1.MainPage"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:local="clr-namespace:SilverlightApplication1"
        xmlns:telerik="http://schemas.telerik.com/2008/xaml/presentation"
        xmlns:nav="clr-namespace:Telerik.Windows.Controls;assembly=Telerik.Windows.Controls.Navigation"
             mc:Ignorable="d" xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
             xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
             Height="213" Width="660"
             xmlns:my="clr-namespace:SilverlightApplication1"
             
             >

    <UserControl.Resources>
        
        <my:NameList x:Key="comboStatusSource"/>
        
        <telerik:CellTemplate x:Key="firstNameTemplate" >
            <TextBlock Foreground="#284869" Text="{Binding FirstName}" VerticalAlignment="Center"  Margin="2"/>
        </telerik:CellTemplate>

        <telerik:CellTemplate x:Key="firstNameEditTemplate" >
            <TextBox Foreground="#284869" Text="{Binding FirstName, Mode=TwoWay}" VerticalAlignment="Center" />
        </telerik:CellTemplate>

        <telerik:CellTemplate x:Key="lastNameTemplate" >
            <TextBlock Foreground="#284869" Text="{Binding LastName}" VerticalAlignment="Center"  Margin="2"/>
        </telerik:CellTemplate>
        
        <telerik:CellTemplate x:Key="statusNameTemplate">
            <telerik:RadComboBox Text="{Binding Status, Mode=TwoWay}" DisplayMemberPath="Status"  ItemsSource="{Binding Source={StaticResource comboStatusSource}}" IsEditable="True" IsFilteringEnabled="True" IsReadOnly="False" Foreground="#284869" Margin="2"/>
        </telerik:CellTemplate>
        
        <DataTemplate x:Key="itemTemplate">
            <Grid />
        </DataTemplate>

    </UserControl.Resources>
    
    

    <nav:RadTreeListView Background="White" x:Name="RadTreeListViewTest" BorderBrush="#a9a9a9" BorderThickness="1" HorizontalContentAlignment="Center" Width="574" Height="170"
                         IsDragDropEnabled="False" IsDragPreviewEnabled="False" IsDragTooltipEnabled="False"
                         IsEditable="True"
                                                    SelectionMode="Single"
                         ItemTemplate="{StaticResource itemTemplate}"
                                                    IsSingleExpandPath="False"
                                                    IsExpandOnSingleClickEnabled="True"
                                                    IsLineEnabled="True" >

        <nav:RadTreeListView.Columns>

            <nav:RadColumn Header="First Name" PropertyName="FirstName" Width="150" IsEditable="True" CellTemplate="{StaticResource firstNameTemplate}"
                           CellEditTemplate="{StaticResource firstNameEditTemplate}" />

            <nav:RadColumn Header="Last Name" PropertyName="LastName" Width="150" IsEditable="False" CellTemplate="{StaticResource lastNameTemplate}" />

            <nav:RadColumn Header="Status" PropertyName="Status" Width="150" IsEditable="False" CellTemplate="{StaticResource statusNameTemplate}" />

        </nav:RadTreeListView.Columns>


    </nav:RadTreeListView>

</UserControl>



----CLASS--------------

using System;
using System.Net;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Documents;
using System.Windows.Ink;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Animation;
using System.Windows.Shapes;
using System.Collections.ObjectModel;
using System.ComponentModel;

namespace SilverlightApplication1
{
    public class NameList : ObservableCollection<PersonName>
    {
        public NameList()
            : base()
        {
            Add(new PersonName("XX", "1DD",1)); // 1=unread
            Add(new PersonName("WW", "TDD2",2)); // 2=read
            Add(new PersonName("AA", "ED188",1)); // 1=unread
            Add(new PersonName("QQ", "RR1",1)); // 1=unread
            Add(new PersonName("RR", "KJ2",2)); // 2=read
        }
    }

    public class PersonName : INotifyPropertyChanged
    {
        public PersonName(string first, string last, int status)
        {
            this.firstName = first;
            this.lastName = last;
            this.status = status;
        }


        private String firstName;
        /// <summary>
        ///     Gets or sets the first name.
        /// </summary>
        public String FirstName
        {
            get
            {
                return this.firstName;
            }
            set
            {
                if (this.firstName != value)
                {
                    this.firstName = value;
                    OnPropertyChanged("FirstName");
                }
            }
        }



        private String lastName;
        /// <summary>
        ///     Gets or sets the last name.
        /// </summary>
        public String LastName
        {
            get
            {
                return this.lastName;
            }
            set
            {
                if (this.lastName != value)
                {
                    this.lastName = value;
                    OnPropertyChanged("LastName");
                }
            }
        }


        private int status;
        /// <summary>
        ///     Gets or sets the last name.
        /// </summary>
        public int Status
        {
            get
            {
                return this.status;
            }
            set
            {
                if (this.status != value)
                {
                    this.status = value;
                    OnPropertyChanged("Status");
                }
            }
        }


        /// <summary>
        ///     Event for INotifyPropertyChanged.
        /// </summary>
        public event PropertyChangedEventHandler PropertyChanged;

        /// <summary>
        ///     Raises the INotifyPropertyChanged event.
        /// </summary>
        /// <param name="propertyName">The property to be included in the INotifyPropertyChanged EventArgs.</param>
        protected virtual void OnPropertyChanged(String propertyName)
        {
            if (PropertyChanged != null)
            {
                PropertyChanged(this, new PropertyChangedEventArgs(propertyName));
            }
        }

    }

}
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Accepted
Miroslav
Telerik team
answered on 13 May 2010, 03:48 PM
Hi Fabiana,

This can be done with a value converter in the ItemTemplate of the ComboBox.

I have done this in the attached project.

Hopefully this will help you.

Sincerely yours,
Miroslav
the Telerik team

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Fabiana
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answered on 18 May 2010, 08:30 PM
Thank you very much Miroslav!!!
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Fabiana
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Miroslav
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Fabiana
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