.net – How to hide the header of a WPF ListView

gridviewlistviewnetwpfwpf-controls

I want to be able to hide the header at the top of each grid column in a WPF ListView.

This is the XAML for my ListView:

   <Window x:Class="ListViewTest.Test0.ListViewTest"
   xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
   xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
   Title="Empty ListView Grid" Height="216" Width="435" FlowDirection="LeftToRight" HorizontalAlignment="Stretch" VerticalAlignment="Stretch" Grid.IsSharedSizeScope="False">
    <Window.Resources>
        <XmlDataProvider x:Key="CustomersDS" Source="C:\data.xml"/>
    </Window.Resources>


    <ListView Margin="0,0,0,50" ItemTemplate="{DynamicResource CustomerTemplate}" ItemsSource="{Binding Source={StaticResource CustomersDS}, XPath=/Customers/Customer}">
        <ListView.View>
            <GridView>
                <GridViewColumn  DisplayMemberBinding="{Binding XPath=Code}"/>
                <GridViewColumn  DisplayMemberBinding="{Binding XPath=Name}"/>
                <GridViewColumn  DisplayMemberBinding="{Binding XPath=Country}"/>
            </GridView>
        </ListView.View>
    </ListView>


</Window>

The data I am binding this to is:

 <Customers>
  <Customer>
 <Code>1234</Code>
 <Name>EPI</Name>
 <Country>Sesame Street</Country>
  </Customer>
  <Customer>
 <Code>3234</Code>
 <Name>Paul</Name>
 <Country>United Kingdom</Country>
  </Customer>
 <Customer>
 <Code>3344</Code>
 <Name>Juan</Name>
 <Country>Spain</Country>
  </Customer>
 <Customer>
 <Code>4321</Code>
 <Name>Dodo</Name>
 <Country>Mars</Country>
  </Customer>
</Customers>

Best Answer

Define a Style like so

<Window.Resources>
    ....
    <Style x:Key="myHeaderStyle" TargetType="{x:Type GridViewColumnHeader}">
        <Setter Property="Visibility" Value="Collapsed" />
    </Style>
</Window.Resources>

Apply it like so

<GridView ColumnHeaderContainerStyle="{StaticResource myHeaderStyle}">
    ....
</GridView>

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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;

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    }

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

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