How to select All lst item from Silverlight 2 beta 2 li... RSS

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  sajesh28l@gm...

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  How to select All lst item from Silverlight 2 beta 2 listbox

  Aug 04, 2008 04:36 AM | LINK

  Hi, I have one listbox i want to select all the list item from this listbox.How i can use foreach statement in list box control.can anybody help me to this? how i can hnadle foreach for this list box.this box is dynamically filled at run time thx in advance regards, Sajesh

  ListBox Template

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  Jim Mangaly

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  Re: How to select All lst item from Silverlight 2 beta 2 listbox

  Aug 04, 2008 04:50 AM | LINK

  Try using the VisualTreeHelper.GetChild() method in a loop:  http://msdn.microsoft.com/en-us/library/system.windows.media.visualtreehelper.getchild(VS.95).aspx

  (If this answers your question, MARK this reply as the answer)

  Jim (http://jimmangaly.blogspot.com/)

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  rajesh shirp...

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  Re: How to select All lst item from Silverlight 2 beta 2 listbox

  Aug 04, 2008 04:56 AM | LINK

   hi sajesh,

  Chk this link out 

  Thanks
  Rajesh Shirpuram
  
  (If this has answered your question, please click on "mark as answer" on this post. Thank you!)
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  sajesh28l@gm...

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  Re: How to select All lst item from Silverlight 2 beta 2 listbox

  Aug 04, 2008 06:49 AM | LINK

  Hi jim, Thanks for spending time for reply to my post.Can you give me sample codes for how i can use VisualTreeHelper.GetChild() .My requirement is filling and show all list items as selected in listbox on runtime. like listbox.items[i].selected =true; Regards, Sajesh
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  Jim Mangaly

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  Re: How to select All lst item from Silverlight 2 beta 2 listbox

  Aug 04, 2008 08:36 AM | LINK

  Hi Sajesh, you can use the following helper function that uses the VisualTreeHelper.GetChild() method:

  private void GetChildren(UIElement parent, Type targetType, ref List<UIElement> children)
          {
              int count = VisualTreeHelper.GetChildrenCount(parent);
              if (count > 0)
              {
                  for (int i = 0; i < count; i++)
                  {
                      UIElement child = (UIElement)VisualTreeHelper.GetChild(parent, i);
                      if (child.GetType() == targetType)
                      {
                          children.Add(child);
                      }
                      GetChildren(child, targetType, ref children);
                  }
              }
          }

  Then call this method like this:

  List<UIElement> result = new List<UIElement>();
  GetChildren(nameofYourListBox, typeof(ListBoxItem), ref result);

  "result" will have the result :). Now you have all the ListBoxItems in a List.

  (If this answers your question, MARK this reply as the answer)

  Jim (http://jimmangaly.blogspot.com/)

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  sajesh28l@gm...

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  Re: How to select All lst item from Silverlight 2 beta 2 listbox

  Aug 07, 2008 03:05 AM | LINK

  Hi jim, Thanks very much for spent time to help me.But my requirement is not like that In my application I was using onle list box with Check boxes as item templte.,so user can select multiple check boxes's .After user selecting check boxes i want to pass all checkboxes in listbox what is checked  to another list box.i mean i want to dynamically add the  checkboxes[what is checked] in another list box  . can't iterate through the list of checkboxes in a Listbox  to see what is checked. i use DataTemplate to display content.how to find checkbox controls in listbox?

  My Xaml code,

   

    <ListBox Height="150" x:Name="lstfeilds" VerticalAlignment="Center" Width="160" Canvas.Left="90" ScrollViewer.VerticalScrollBarVisibility="Visible" DisplayMemberPath="Tname" DataContext="Tname" >
                                 <ListBox.ItemTemplate>
                                     <DataTemplate>
                                      <CheckBox Content="{Binding Tname}" Margin="2" IsChecked="false" ClickMode="Press"                   
  Click="CheckBox_Click"/>                                
                                      </DataTemplate>
                                   </ListBox.ItemTemplate>
                               </ListBox>
  

   

    can youe help me?
  

  Thanks in advance,

   

  Regards, Sajesh

  ListBox Template

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  Jonathan She...

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  Re: How to select All lst item from Silverlight 2 beta 2 listbox

  Aug 12, 2008 08:57 AM | LINK

  Hi Sajesh,

  Below is a working sample. Please compare it with yours. 

  <UserControl
  	xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
  	xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
  	x:Class="SLTest1.Page"
  	Width="640" Height="480">
  
  	<Grid x:Name="LayoutRoot" Background="White" >
  		<ListBox x:Name="myListBox" Margin="27,80,0,238" VerticalAlignment="Stretch" HorizontalAlignment="Left" Width="222">
              <ListBox.ItemTemplate>
                  <DataTemplate>
                          <CheckBox Content="{Binding}" IsChecked="false" ClickMode="Press" Click="CheckBox_Click"></CheckBox>
                  </DataTemplate>
              </ListBox.ItemTemplate>
          </ListBox>
          <ListBox x:Name="destListBox" HorizontalAlignment="Right" Margin="0,80,54,238" VerticalAlignment="Stretch" Width="222">
               
          </ListBox>
      </Grid>
  </UserControl>

   

  using System;
  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.Generic;
  
  namespace SLTest1
  {
  	public partial class Page : UserControl
  	{
          List<string> myList = new List<string>();
          public Page()
  		{
  			// Required to initialize variables
  			InitializeComponent();
              this.Loaded += new RoutedEventHandler(Page_Loaded);
  		}
  
          void Page_Loaded(object sender, RoutedEventArgs e)
          {
              LoadData(); 
          }
  
         
          private void CheckBox_Click(object sender, RoutedEventArgs e)
          {
              CheckBox curCheckBox = sender as CheckBox;
              if (curCheckBox.IsChecked == true)
              {
                  //delete the checked item.

                  //myList.Remove(curCheckBox.Content.ToString());
                  //myListBox.ItemsSource = null;
                  //myListBox.ItemsSource = myList;
  
                  ListBoxItem newItem = new ListBoxItem();
  
                  newItem.Content = curCheckBox.Content;
                  destListBox.Items.Add(newItem);
              }
              else 
              {
                  List delList = new List();
                  foreach (ListBoxItem lbi in destListBox.Items) 
                  {
                      if (lbi.Content.ToString() == curCheckBox.Content.ToString()) 
                      {
                          delList.Add(lbi);
                      }
                  }
                  foreach (ListBoxItem lbi in delList) 
                  {
                      destListBox.Items.Remove(lbi);
                  }
              }
          }
          private void LoadData() 
          {
              
              myList.Add("aaaaa");
              myList.Add("bbbbb");
              myList.Add("ccccc");
              myList.Add("ddddd");
              myList.Add("eeeee");
              myList.Add("fffff");
              myListBox.ItemsSource = myList;
          }
          
  	}
  }

  Best regards,

  Jonathan  

   

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