Windows Presentation Foundation

Contains Element?

Posted on by coder 


   
  
<Page xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    x:Class="ElemCollMethods.Pane1"
    WindowTitle="UI Element Collection Methods Sample">
 <StackPanel>
    <TextBlock Name="txt" FontSize="16">UI Element Collection - Methods</TextBlock>

    <TabControl>
        <TabItem MouseLeftButtonUp="ContainsElement">
            <TabItem.Header>Contains Element?</TabItem.Header>
        </TabItem>
    </TabControl>
    <StackPanel Name="sp1"></StackPanel>

 </StackPanel>
</Page>
//File:Window.xaml.cs

using System;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Documents;
using System.Windows.Navigation;
using System.Windows.Shapes;
using System.Windows.Data;
using System.Windows.Input;

namespace ElemCollMethods
{

  public partial class Pane1 : Page
  {
    System.Windows.Controls.Button btn, btn1, btn2, btn3;

        void ContainsElement(object sender, RoutedEventArgs e)
        {
            sp1.Children.Clear();
            btn = new Button();
      btn.Content = "Click to clear";
            sp1.Children.Add(btn);
            btn.Click += (ClearControls);
      btn1 = new Button();
      btn1.Content = "Click to clear";
            sp1.Children.Add(btn1);
            btn1.Click += (ClearControls);
      btn2 = new Button();
      btn2.Content = "Click to clear";
            sp1.Children.Add(btn2);
            btn2.Click += (ClearControls);
      btn3 = new Button();
      btn3.Content = "Click to clear";
            sp1.Children.Add(btn3);
            btn3.Click += (ClearControls);

            TextBlock txt1 = new TextBlock();
            sp1.Children.Add(txt1);
            txt1.Text = "This StackPanel contains UIElement btn1: " + sp1.Children.Contains(btn1).ToString();
        }
        
    void ClearControls(object sender, RoutedEventArgs e)
    {
            sp1.Children.Clear();
        }        
  }
}

Clear Controls

Posted on by coder 


   
  
<Page xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    x:Class="ElemCollMethods.Pane1"
    WindowTitle="UI Element Collection Methods Sample">
 <StackPanel>
    <TextBlock Name="txt" FontSize="16">UI Element Collection - Methods</TextBlock>

    <TabControl>
    
        <TabItem MouseLeftButtonUp="ClearButtons">
            <TabItem.Header>Clear Controls</TabItem.Header>
        </TabItem>
    </TabControl>
    <StackPanel Name="sp1"></StackPanel>

 </StackPanel>
</Page>

//File:Window.xaml.cs
using System;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Documents;
using System.Windows.Navigation;
using System.Windows.Shapes;
using System.Windows.Data;
using System.Windows.Input;

namespace ElemCollMethods
{

  public partial class Pane1 : Page
  {
    System.Windows.Controls.Button btn, btn1, btn2, btn3;


    void ClearButtons(object sender, MouseButtonEventArgs e)
    {
            sp1.Children.Clear();
            btn = new Button();
      btn.Content = "Click to clear";
            sp1.Children.Add(btn);
            btn.Click += (ClearControls);
      btn1 = new Button();
      btn1.Content = "Click to clear";
            sp1.Children.Add(btn1);
            btn1.Click += (ClearControls);
      btn2 = new Button();
      btn2.Content = "Click to clear";
            sp1.Children.Add(btn2);
            btn2.Click += (ClearControls);
      btn3 = new Button();
      btn3.Content = "Click to clear";
            sp1.Children.Add(btn3);
            btn3.Click += (ClearControls);
    }
        
    void ClearControls(object sender, RoutedEventArgs e)
    {
            sp1.Children.Clear();
        }    
  }
}

Show Index of Controls

Posted on by coder 


   
  
<Page xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    x:Class="ElemCollMethods.Pane1"
    WindowTitle="UI Element Collection Methods Sample">
 <StackPanel>
    <TextBlock Name="txt" FontSize="16">UI Element Collection - Methods</TextBlock>

    <TabControl>
        <TabItem MouseLeftButtonUp="ShowIndex">
            <TabItem.Header>Show Index of Controls</TabItem.Header>
        </TabItem>
    </TabControl>
    <StackPanel Name="sp1"></StackPanel>

 </StackPanel>
</Page>

//File:Window.xaml.cs
using System;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Documents;
using System.Windows.Navigation;
using System.Windows.Shapes;
using System.Windows.Data;
using System.Windows.Input;

namespace ElemCollMethods
{

  public partial class Pane1 : Page
  {
    System.Windows.Controls.Button btn, btn1, btn2, btn3;


    void ShowIndex(object sender, MouseButtonEventArgs e)
    {
            sp1.Children.Clear();
            btn = new Button();
      btn.Content = "Click for index";
      btn.Click += (PrintIndex);
            sp1.Children.Add(btn);

            btn1 = new Button();
      btn1.Content = "Click for index";
            sp1.Children.Add(btn1);
            btn1.Click += (PrintIndex1);

      btn2 = new Button();
      btn2.Content = "Click for index";
            sp1.Children.Add(btn2);
            btn2.Click += (PrintIndex2);

      btn3 = new Button();
      btn3.Content = "Click for index";
            sp1.Children.Add(btn3);
            btn3.Click += (PrintIndex3);

    }
    void PrintIndex(object sender, RoutedEventArgs e)
    {
            btn.Content = ((sp1.Children.IndexOf(btn)).ToString());
        }
    void PrintIndex1(object sender, RoutedEventArgs e)
    {
            btn1.Content = ((sp1.Children.IndexOf(btn1)).ToString());
        }
    void PrintIndex2(object sender, RoutedEventArgs e)
    {
            btn2.Content = ((sp1.Children.IndexOf(btn2)).ToString());
        }
    void PrintIndex3(object sender, RoutedEventArgs e)
    {
            btn3.Content = ((sp1.Children.IndexOf(btn3)).ToString());
        }
  }
}

Add child control

Posted on by coder 


   
  

<Page xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    x:Class="ElemCollMethods.Pane1"
    WindowTitle="UI Element Collection Methods Sample">
 <StackPanel>
    <TextBlock Name="txt" FontSize="16">UI Element Collection - Methods</TextBlock>

    <TabControl>
        <TabItem MouseLeftButtonUp="AddButton">
            <TabItem.Header>Add Control</TabItem.Header>
        </TabItem>
    </TabControl>
    <StackPanel Name="sp1"></StackPanel>

 </StackPanel>
</Page>
//File:Window.xaml.cs

using System;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Documents;
using System.Windows.Navigation;
using System.Windows.Shapes;
using System.Windows.Data;
using System.Windows.Input;

namespace ElemCollMethods
{

  public partial class Pane1 : Page
  {
    System.Windows.Controls.Button btn, btn1, btn2, btn3;

    void AddButton(object sender, MouseButtonEventArgs e)
    {
      sp1.Children.Clear();
      btn = new Button();
      btn.Content = "New Button";
      sp1.Children.Add(btn);
    }
  }
}

Insert Button to a Panel

Posted on by coder 


   
  
<Page xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    x:Class="ElemCollMethods.Pane1"
    WindowTitle="UI Element Collection Methods Sample">
 <StackPanel>
    <TextBlock Name="txt" FontSize="16">UI Element Collection - Methods</TextBlock>

    <TabControl>
    
        <TabItem MouseLeftButtonUp="InsertButton">
            <TabItem.Header>Insert Control</TabItem.Header>
        </TabItem>
    </TabControl>
    <StackPanel Name="sp1"></StackPanel>

 </StackPanel>
</Page>


//File:Window.xaml.cs

using System;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Documents;
using System.Windows.Navigation;
using System.Windows.Shapes;
using System.Windows.Data;
using System.Windows.Input;

namespace ElemCollMethods
{

  public partial class Pane1 : Page
  {
    System.Windows.Controls.Button btn, btn1, btn2, btn3;

    void InsertButton(object sender, MouseButtonEventArgs e)
    {
            sp1.Children.Clear();
            btn = new Button();
      btn.Content = "Click to insert button";
            sp1.Children.Add(btn);
            btn.Click += (InsertControls);
      btn1 = new Button();
      btn1.Content = "Click to insert button";
            sp1.Children.Add(btn1);
            btn1.Click += (InsertControls);
    }
    void InsertControls(object sender, RoutedEventArgs e)
    {
      btn2 = new Button();
      btn2.Content = "Inserted Button";
            sp1.Children.Insert(1, btn2);
        }
  }
}

Remove Control from a Panel

Posted on by coder 


   
  
<Page xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    x:Class="ElemCollMethods.Pane1"
    WindowTitle="UI Element Collection Methods Sample">
 <StackPanel>
    <TextBlock Name="txt" FontSize="16">UI Element Collection - Methods</TextBlock>

    <TabControl>
        <TabItem MouseLeftButtonUp="RemoveButton">
            <TabItem.Header>Remove Control</TabItem.Header>
        </TabItem>
    </TabControl>
    <StackPanel Name="sp1"></StackPanel>

 </StackPanel>
</Page>

//File:Window.xaml.cs
using System;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Documents;
using System.Windows.Navigation;
using System.Windows.Shapes;
using System.Windows.Data;
using System.Windows.Input;

namespace ElemCollMethods
{

  public partial class Pane1 : Page
  {
    System.Windows.Controls.Button btn, btn1, btn2, btn3;

    void RemoveButton(object sender, MouseButtonEventArgs e)
    {
            sp1.Children.Clear();
            btn = new Button();
      btn.Content = "Click to insert button";
            sp1.Children.Add(btn);
            btn.Click += (InsertControls);
      btn1 = new Button();
      btn1.Content = "Click to insert button";
            sp1.Children.Add(btn1);
            btn1.Click += (InsertControls);
            if ((sp1.Children.IndexOf(btn) >= 0) || (sp1.Children.IndexOf(btn1) >= 0) || (sp1.Children.IndexOf(btn2) >= 0) || (sp1.Children.IndexOf(btn3) >= 0))
            {
                sp1.Children.RemoveAt(0);
            }
    }
    void InsertControls(object sender, RoutedEventArgs e)
    {
      btn2 = new Button();
      btn2.Content = "Inserted Button";
            sp1.Children.Insert(1, btn2);
        }
  }
}

Add a control to a Panel

Posted on by coder 


   
  
<Page xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    x:Class="ElemCollMethods.Pane1"
    WindowTitle="UI Element Collection Methods Sample">
 <StackPanel>
    <TextBlock Name="txt" FontSize="16">UI Element Collection - Methods</TextBlock>

    <TabControl>
        <TabItem MouseLeftButtonUp="AddButton">
            <TabItem.Header>Add Control</TabItem.Header>
        </TabItem>
    </TabControl>
    <StackPanel Name="sp1"></StackPanel>

 </StackPanel>
</Page>

//File:Window.xaml.cs
using System;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Documents;
using System.Windows.Navigation;
using System.Windows.Shapes;
using System.Windows.Data;
using System.Windows.Input;

namespace ElemCollMethods
{

  public partial class Pane1 : Page
  {
    System.Windows.Controls.Button btn, btn1, btn2, btn3;

    void AddButton(object sender, MouseButtonEventArgs e)
    {
      sp1.Children.Clear();
      btn = new Button();
      btn.Content = "New Button";
      sp1.Children.Add(btn);
    }
  }
}