Author: coder

Insert to a Panel by index

Posted on by coder 


   
  
<StackPanel
  xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
  xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
  x:Class="WpfApplication1.RoutedEventAddRemoveHandler" 
  Name="root">
    <StackPanel.Resources>
      <Style TargetType="{x:Type Button}">
        <Setter Property="Height" Value="20"/>
        <Setter Property="Width" Value="250"/>
        <Setter Property="HorizontalAlignment" Value="Left"/>
      </Style>
    </StackPanel.Resources>
  <TextBlock Name="text1">Clicking the button below</TextBlock>
  <Button Name="b1" Click="MakeButton">Make new button and add handler to it</Button>
</StackPanel>
//File:Window.xaml.cs

using System.Windows;
using System.Windows.Controls;

namespace WpfApplication1 {
    public partial class RoutedEventAddRemoveHandler {
        
        void MakeButton(object sender, RoutedEventArgs e)
        {
            Button b2 = new Button();
            b2.Content = "New Button";
            root.Children.Insert(root.Children.Count, b2);
            DockPanel.SetDock(b2, Dock.Top);
            text1.Text = "click me...";
            b1.IsEnabled = false;
        }
    }
}

Get all children from a Panel

Posted on by coder 


   
  
<StackPanel Name="root"
  xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
  xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
  x:Class="WpfApplication1.DPClearValue">
    <StackPanel.Resources>
      <Style TargetType="Button">
        <Setter Property="Height" Value="20"/>
        <Setter Property="Width" Value="250"/>
        <Setter Property="HorizontalAlignment" Value="Left"/>
      </Style>
      <Style TargetType="Ellipse">
        <Setter Property="Height" Value="50"/>
        <Setter Property="Width" Value="50"/>
        <Setter Property="Fill" Value="Black"/>
      </Style>
      <Style TargetType="Rectangle">
        <Setter Property="Height" Value="50"/>
        <Setter Property="Width" Value="50"/>
        <Setter Property="Fill" Value="Blue"/>
      </Style>
      <Style TargetType="Polygon">
        <Setter Property="Points" Value="10,60 60,60 60,10"/>
        <Setter Property="Fill" Value="Blue"/>
      </Style>
      <Style x:Key="ShapeStyle" TargetType="Shape">
        <Setter Property="Fill" Value="Red"/>
      </Style>
    </StackPanel.Resources>
  <DockPanel Name="myDockPanel">
    <Ellipse Height="100"  Width="100" Style="{StaticResource ShapeStyle}"/>
    <Rectangle Height="100" Width="100"  Style="{StaticResource ShapeStyle}" />
    <Polygon Points="10,110 110,110 110,10" Style="{StaticResource ShapeStyle}"/>
  </DockPanel>
    <Button Name="RedButton" Click="MakeEverythingRed">Make everything red</Button>
    <Button Name="ClearButton" Click="RestoreDefaultProperties">
  Clear local values
  </Button>

</StackPanel>

//File:Window.xaml.cs


using System.Windows;
using System.Collections;
using System.Windows.Media;
using System.Windows.Controls;
using System.Windows.Shapes;

namespace WpfApplication1 {
    public partial class DPClearValue {

        void RestoreDefaultProperties(object sender, RoutedEventArgs e)
        {
            UIElementCollection uic = myDockPanel.Children;
            foreach (Shape uie in uic)
            {
                LocalValueEnumerator locallySetProperties = uie.GetLocalValueEnumerator();
                while (locallySetProperties.MoveNext())
                {
                    DependencyProperty propertyToClear = (DependencyProperty)locallySetProperties.Current.Property;
                    if (!propertyToClear.ReadOnly) { uie.ClearValue(propertyToClear); }
                }
            }
        }
        void MakeEverythingRed(object sender, RoutedEventArgs e)
        {
            UIElementCollection uic = myDockPanel.Children;
            foreach (Shape uie in uic) {uie.Fill = new SolidColorBrush(Colors.Red);}
        }
    }
}

Search for an element by using Panel.FindName()

Posted on by coder 


   
  

<StackPanel Name="root"
  xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
  xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
  x:Class="WpfApplication1.FEFindName">
  <StackPanel.Resources>
      <Style TargetType="{x:Type Button}">
        <Setter Property="Height" Value="20"/>
        <Setter Property="Width" Value="250"/>
        <Setter Property="HorizontalAlignment" Value="Left"/>
      </Style>
      <Style TargetType="{x:Type TextBlock}">
        <Setter Property="HorizontalAlignment" Value="Left"/>
        <Setter Property="FontSize" Value="20"/>
      </Style>
  </StackPanel.Resources>
  <Button Click="Find">Find element with the ID "dog" and change color</Button>
  <StackPanel Name="stackPanel">
    <TextBlock Name="cat">Cat</TextBlock>
    <TextBlock Name="dog">Dog</TextBlock>
    <TextBlock Name="fish">Fish</TextBlock>    
  </StackPanel>
</StackPanel>
//File:Window.xaml.cs

using System;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Media;

namespace WpfApplication1
{
    public partial class FEFindName {
        void Find(object sender, RoutedEventArgs e)
        {
            object wantedNode = stackPanel.FindName("dog");
            if (wantedNode is TextBlock)
            {
                TextBlock wantedChild = wantedNode as TextBlock;
                wantedChild.Foreground = Brushes.Blue;
            }
        }
    }
}

Password for PasswordBox

Posted on by coder 


   
   

<Window x:Class="SimpleStyles.Window1"
  xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
  xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
  Title="SimpleStyles"
  Background="#F8F8F8">
  <ScrollViewer>
    <WrapPanel>
      <HeaderedItemsControl Header="TextBox">
        <StackPanel>
          <TextBox HorizontalAlignment="Center" Margin="8" Text="Edit Me" />
          <PasswordBox HorizontalAlignment="Center" Margin="8" Password="Password" />
        </StackPanel>
      </HeaderedItemsControl>
   
    </WrapPanel>
  </ScrollViewer>
</Window>

Display a Password Entry Box and get the input

Posted on by coder 


   
  

<Window x:Class="WpfApplication1.Window1"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    Title="WPF" Height="100" Width="300">
    <StackPanel Orientation="Horizontal">
        <TextBlock Margin="5" VerticalAlignment="Center">
            Enter Password:
        </TextBlock>
        <PasswordBox Name="passwordBox" PasswordChar="!" 
                     VerticalAlignment="Center" Width="150" />
        <Button Content="OK" IsDefault="True" Margin="5" Name="button1" 
                VerticalAlignment="Center" Click="button1_Click" />
    </StackPanel>
</Window>
//File:Window.xaml.cs
using System.Windows;

namespace WpfApplication1
{
    public partial class Window1 : Window
    {
        public Window1()
        {
            InitializeComponent();
        }
        private void button1_Click(object sender, RoutedEventArgs e)
        {
            MessageBox.Show("Password entered: " + passwordBox.Password,Title);
        }
    }
}

Multiple Subpaths with PathFigure

Posted on by coder 


   
   
<Window  
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    x:Class="SDKSample.SampleViewer"
    Title="  Examples" >

   <Canvas> 
          <Path Stroke="Black" StrokeThickness="1">
            <Path.Data>
              <PathGeometry>
                <PathGeometry.Figures>
                  <PathFigureCollection>
                    <PathFigure IsClosed="True" StartPoint="10,100">
                      <PathFigure.Segments>
                        <PathSegmentCollection>
                          <LineSegment Point="100,100" />
                          <LineSegment Point="100,50" />
                        </PathSegmentCollection>
                      </PathFigure.Segments>
                    </PathFigure>
                    <PathFigure IsClosed="True" StartPoint="10,10">
                      <PathFigure.Segments>
                        <PathSegmentCollection>
                          <LineSegment Point="100,10" />
                          <LineSegment Point="100,40" />
                        </PathSegmentCollection>
                      </PathFigure.Segments>
                    </PathFigure>                    
                  </PathFigureCollection>
                </PathGeometry.Figures>
              </PathGeometry>
            </Path.Data>
          </Path>
       
   </Canvas> 


</Window>