how to update a wpf application?

Question

0.00/5 (No votes)

See more:

in wpf:
I created a slider and bind it to window background.here is the code:

C#

Value="{Binding Path=Background.Color.B, ElementName=windowhelp, Mode=TwoWay}"

now when I run window and change the slider value , window background does not ghange!
how can I change window background when I change the slider value?

Posted 1-Sep-13 21:56pm

e121

Updated 1-Sep-13 23:00pm

ridoy

v4

Add a Solution

Comments

Pheonyx 2-Sep-13 4:12am

If you are using a slider then you will need some sort of converter I would have thought. What values does your Slider output, if they are not "Colors" then you will need to build a converter that converts the integer value output of your slider to a colour so that it can be bound to the background property.

e121 2-Sep-13 4:46am

No!
When I bind slider output there are colors!

listen.my code works but not up to date!
in fact when I change slider , The background does not change.
for ghanging window background color I have to change slider.Then change window size so that window background color changes!

I want to change window background color when I change slider quickly.

1 solution

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

Shai Vashdi · Answer 1 · 2014-04-20T12:36:00

Hi,

This is my solution for the problem:

MainWindow.cs:

XML

<Window x:Class="WpfApplication3.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:local="clr-namespace:WpfApplication3"
        Title="MainWindow" Height="350" Width="525" x:Name="window" removed="LightBlue">
    <Window.Resources>
        <local:BrushToIntConverter x:Key="BrushToIntConverter" />
    </Window.Resources>
    <DockPanel>
        <Slider DockPanel.Dock="Top" Minimum="0" Maximum="256" Value="{Binding Path=Background, ElementName=window, Mode=TwoWay, Converter={StaticResource  ResourceKey=BrushToIntConverter}, ConverterParameter=R}"/>
        <Slider DockPanel.Dock="Top" Minimum="0" Maximum="256" Value="{Binding Path=Background, ElementName=window, Mode=TwoWay, Converter={StaticResource  ResourceKey=BrushToIntConverter}, ConverterParameter=G}"/>
        <Slider DockPanel.Dock="Top" Minimum="0" Maximum="256" Value="{Binding Path=Background, ElementName=window, Mode=TwoWay, Converter={StaticResource  ResourceKey=BrushToIntConverter}, ConverterParameter=B}"/>
    </DockPanel>
</Window>

Three silders for R,G,B.

And the Brush to Int Converter:

C#

[ValueConversion(typeof(System.Windows.Media.Brush), typeof(int))]
public class BrushToIntConverter : IValueConverter
{
    protected System.Windows.Media.Color m_Color = System.Windows.Media.Colors.White;

    public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
    {
        System.Windows.Media.SolidColorBrush brush = value as System.Windows.Media.SolidColorBrush;

        m_Color = brush.Color;

        switch (parameter as string)
        {
            case "R":
                return m_Color.R;
            case "G":
                return m_Color.G;
            case "B":
                return m_Color.B;
        }

        return 0;
    }

    public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
    {
        int intValue = (int)Math.Round((double)value);

        byte r = m_Color.R;
        byte g = m_Color.G;
        byte b = m_Color.B;

        switch (parameter as string)
        {
            case "R":
                r = (byte)intValue;
                break;
            case "G":
                g = (byte)intValue;
                break;
            case "B":
                b = (byte)intValue;
                break;
        }

        m_Color = new System.Windows.Media.Color() { R = r, G = g, B = b, A = m_Color.A };

        return new System.Windows.Media.SolidColorBrush(m_Color);
    }
}