Wpf – How to set a WPF ListView Selected Item color

background-colorlistviewlistviewitemstyleswpf

I am trying to recreate the Mail UI from Windows 8 in a WPF application running on Windows 7. Here's what I want to achieve:

Target UI

In particular, I don't know how to change the background color for selected items e.g. the Inbox item in the first column and the mail from Twitter in the second column. I have tried several solutions from other similar Stackoverflow Questions but none seem to work for me. e.g.

Selected item loses style when focus moved out in WPF ListBox

WPF ListView Inactive Selection Color

Here is the code I have for my listview:

<ListView Grid.Row="0" SelectedItem="{Binding Path=SelectedArea}" ItemsSource="{Binding Path=Areas}" Background="#DCE3E5" >

                    <ListView.Resources>

                        <!-- Template that is used upon selection of an Area -->
                        <ControlTemplate x:Key="SelectedTemplate" TargetType="ListViewItem">
                            <Border Background="#388095" Cursor="Hand" >
                                <TextBlock Text="{Binding Name}" Margin="5" />
                            </Border>                                
                        </ControlTemplate>

                        <Style TargetType="ListViewItem">
                            <Setter Property="Template">
                                <Setter.Value>                                        
                                    <!-- Base Template that is replaced upon selection -->
                                    <ControlTemplate TargetType="ListViewItem">
                                        <Border Background="#DCE3E5" Cursor="Hand"  >
                                            <TextBlock Text="{Binding Name}" Margin="5" />
                                        </Border>
                                    </ControlTemplate>
                                </Setter.Value>
                            </Setter>
                            <Style.Triggers>
                                <MultiTrigger>
                                    <MultiTrigger.Conditions>
                                        <Condition Property="IsSelected" Value="true" />
                                    </MultiTrigger.Conditions>
                                    <Setter Property="Template" Value="{StaticResource SelectedTemplate}" />
                                </MultiTrigger>
                            </Style.Triggers>
                        </Style>

                    </ListView.Resources>                        

                </ListView>

How can I change the background color of the selected item? And how do I retain the color change when the focus changes.

Best Answer

I did something similar to this recently:

<ListView.Resources>                
    <ControlTemplate x:Key="SelectedTemplate" TargetType="ListViewItem">
        <Border CornerRadius="5" BorderThickness="1" BorderBrush="DarkGray" Background="#FF92C6F9" Padding="2" HorizontalAlignment="Left" Margin="5" Tag="{Binding Value}" Cursor="Hand" MouseUp="Border_MouseUp_1">                        
            <TextBlock Text="{Binding Name}" Margin="5" />
        </Border>
    </ControlTemplate>
    <Style TargetType="ListViewItem">
        <Setter Property="Template">
            <Setter.Value>
                <ControlTemplate TargetType="ListViewItem">
                    <Border CornerRadius="5" BorderThickness="1" BorderBrush="DarkGray" Background="WhiteSmoke" Padding="2" HorizontalAlignment="Left" Margin="5" Tag="{Binding Value}" Cursor="Hand" MouseUp="Border_MouseUp_1" >                                    
                        <TextBlock Text="{Binding Name}" Margin="5" />
                    </Border>
                </ControlTemplate>
            </Setter.Value>
        </Setter>
        <Style.Triggers>
            <MultiTrigger>
                <MultiTrigger.Conditions>
                    <Condition Property="IsSelected" Value="true" />
                    <Condition Property="Selector.IsSelectionActive" Value="true" />
                </MultiTrigger.Conditions>                            
                <Setter Property="Template" Value="{StaticResource SelectedTemplate}" />                            
            </MultiTrigger>
        </Style.Triggers>
    </Style>
</ListView.Resources>

I believe removing:

<Condition Property="Selector.IsSelectionActive" Value="true" />

will allow you to keep the background color after focus is lost.

EDIT:

In response to your question below:

You can bind the tag property of the TextBlock to the command parameter, and then execute the command on the MouseUp event of the TextBlock:

<TextBlock x:Name="MyTextBlock" Text="Click Me!" Tag="{Binding MyCommandParameter}" MouseUp="MyTextBlock_MouseUp" />

And in the code behind:

    private void MyTextBlock_MouseUp(object sender, MouseButtonEventArgs e)
    {
        TextBlock tb = sender as TextBlock;

        if (tb != null && tb.Tag != null)
        {
            ViewModel.MyCommand.Execute(tb.Tag);
        }            
    }

Related Solutions

Android – How to lazy load images in ListView in Android

Here's what I created to hold the images that my app is currently displaying. Please note that the "Log" object in use here is my custom wrapper around the final Log class inside Android.

package com.wilson.android.library;

/*
 Licensed to the Apache Software Foundation (ASF) under one or more
contributor license agreements.  See the NOTICE file
distributed with this work for additional information
regarding copyright ownership.  The ASF licenses this file
to you under the Apache License, Version 2.0 (the
"License"); you may not use this file except in compliance
with the License.  You may obtain a copy of the License at

http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing,
software distributed under the License is distributed on an
"AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
KIND, either express or implied.  See the License for the
specific language governing permissions and limitations
under the License.
*/
import java.io.IOException;

public class DrawableManager {
    private final Map<String, Drawable> drawableMap;

    public DrawableManager() {
        drawableMap = new HashMap<String, Drawable>();
    }

    public Drawable fetchDrawable(String urlString) {
        if (drawableMap.containsKey(urlString)) {
            return drawableMap.get(urlString);
        }

        Log.d(this.getClass().getSimpleName(), "image url:" + urlString);
        try {
            InputStream is = fetch(urlString);
            Drawable drawable = Drawable.createFromStream(is, "src");


            if (drawable != null) {
                drawableMap.put(urlString, drawable);
                Log.d(this.getClass().getSimpleName(), "got a thumbnail drawable: " + drawable.getBounds() + ", "
                        + drawable.getIntrinsicHeight() + "," + drawable.getIntrinsicWidth() + ", "
                        + drawable.getMinimumHeight() + "," + drawable.getMinimumWidth());
            } else {
              Log.w(this.getClass().getSimpleName(), "could not get thumbnail");
            }

            return drawable;
        } catch (MalformedURLException e) {
            Log.e(this.getClass().getSimpleName(), "fetchDrawable failed", e);
            return null;
        } catch (IOException e) {
            Log.e(this.getClass().getSimpleName(), "fetchDrawable failed", e);
            return null;
        }
    }

    public void fetchDrawableOnThread(final String urlString, final ImageView imageView) {
        if (drawableMap.containsKey(urlString)) {
            imageView.setImageDrawable(drawableMap.get(urlString));
        }

        final Handler handler = new Handler() {
            @Override
            public void handleMessage(Message message) {
                imageView.setImageDrawable((Drawable) message.obj);
            }
        };

        Thread thread = new Thread() {
            @Override
            public void run() {
                //TODO : set imageView to a "pending" image
                Drawable drawable = fetchDrawable(urlString);
                Message message = handler.obtainMessage(1, drawable);
                handler.sendMessage(message);
            }
        };
        thread.start();
    }

    private InputStream fetch(String urlString) throws MalformedURLException, IOException {
        DefaultHttpClient httpClient = new DefaultHttpClient();
        HttpGet request = new HttpGet(urlString);
        HttpResponse response = httpClient.execute(request);
        return response.getEntity().getContent();
    }
}

Wpf – Listview selection color

Change the ItemContainerStyle on the ListView to a style that doesn't change the background when an item is selected but instead changes the color of a border. Below is an example:

  <Style x:Key="MyListViewItemStyle" TargetType="{x:Type ListViewItem}">
     <Setter Property="Background" Value="{Binding SourceType, Converter={StaticResource SourceGroupConverter}}" />
     <Setter Property="Template">
        <Setter.Value>
           <ControlTemplate TargetType="{x:Type ListViewItem}">
              <Border
                 x:Name="Border"
                 BorderBrush="Transparent"
                 BorderThickness="1"
                 Background="{TemplateBinding Background}">
                 <GridViewRowPresenter Columns="{TemplateBinding GridView.ColumnCollection}" Content="{TemplateBinding Content}"/>
              </Border>
              <ControlTemplate.Triggers>
                 <Trigger Property="IsSelected" Value="true">
                    <Setter TargetName="Border" Property="BorderBrush" Value="Black"/>
                 </Trigger>
              </ControlTemplate.Triggers>
           </ControlTemplate>
        </Setter.Value>
     </Setter>
  </Style>

And then use the style like this:

<ListView ItemContainerStyle="{StaticResource MyListViewItemStyle}">
   ...
</ListView>

Best Answer

Related Solutions

Android – How to lazy load images in ListView in Android

Wpf – Listview selection color

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