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我想在ListView中編輯一個字段。 我的意思是當我在列表視圖中選擇行時，一個字段變爲文本框而不是文本塊。 但它不起作用 - 我一直都在看到兩個控件。wpf可編輯ListView
XAML：
<Window x:Class="fastnn_speedTest.Window1"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:sys="clr-namespace:System;assembly=mscorlib"
xmlns:local="clr-namespace:fastnn_speedTest"
DataContext="{Binding RelativeSource={RelativeSource Self}}"
Title="fastnn: not saved" Height="300" Width="300">
<Window.Resources>
<local:BoolToVisibilityConverter x:Key="VisibilityOfBool" />
<local:StringToIntValueConverter x:Key="StringToInt" />
<local:StringToFloatValueConverter x:Key="StringToFloat" />
<ObjectDataProvider MethodName="GetValues" ObjectType="{x:Type sys:Enum}" x:Key="ActivationEnum">
<ObjectDataProvider.MethodParameters>
<x:Type x:TypeName="local:Network+Layer+ActivFunction" />
</ObjectDataProvider.MethodParameters>
</ObjectDataProvider>
<ObjectDataProvider MethodName="GetValues" ObjectType="{x:Type sys:Enum}" x:Key="ComputeMethodEnum">
<ObjectDataProvider.MethodParameters>
<x:Type x:TypeName="local:Training+ComputeMethodEnum" />
</ObjectDataProvider.MethodParameters>
</ObjectDataProvider>
<Style TargetType="{x:Type TextBlock}" x:Key="ListTextBlockStyle">
<Setter Property="VerticalAlignment" Value="Center" />
<Setter Property="Visibility" Value="{Binding Path=IsSelected, RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type ListViewItem}}, Converter={StaticResource VisibilityOfBool}, ConverterParameter=True}" />
</Style>
<Style TargetType="{x:Type FrameworkElement}" x:Key="ListTextBoxStyle">
<Setter Property="VerticalAlignment" Value="Center" />
<Setter Property="Visibility" Value="{Binding Path=IsSelected, RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type ListViewItem}}, Converter={StaticResource VisibilityOfBool}, ConverterParameter=False}" />
</Style>
<DataTemplate x:Key="ActivationTemplate">
<ComboBox ItemsSource="{Binding Source={StaticResource ActivationEnum}}" SelectedValue="{Binding Path=Activation}" Width="100"/>
</DataTemplate>
<DataTemplate x:Key="NeuronsTemplate">
<Grid>
<TextBox Text="{Binding Path=Neurons}" Width="40" Style="{Binding Source=StaticResource ListTextBoxStyle }"></TextBox>
<TextBlock Text="{Binding Path=Neurons}" Width="40" Style="{Binding Source=StaticResource ListTextBlockStyle }"></TextBlock>
</Grid>
</DataTemplate>
</Window.Resources>
<Grid Background="LightGray">
<Grid.RowDefinitions>
<RowDefinition Height="auto"></RowDefinition>
<RowDefinition Height="*"></RowDefinition>
<RowDefinition Height="auto"></RowDefinition>
</Grid.RowDefinitions>
<Menu Grid.Row="0">
<MenuItem Header="File">
<MenuItem Header="New" Click="MenuNew_Click"></MenuItem>
<MenuItem Header="Open" Click="MenuOpen_Click"></MenuItem>
<Separator></Separator>
<MenuItem Header="Save" Click="MenuSave_Click"></MenuItem>
<MenuItem Header="Save As" Click="MenuSaveAs_Click"></MenuItem>
<Separator></Separator>
<MenuItem Header="Exit"></MenuItem>
</MenuItem>
</Menu>
<TabControl Grid.Row="1" Name="Tabs">
<TabItem Header="Network">
<Grid>
<Grid.RowDefinitions>
<RowDefinition Height="*"></RowDefinition>
<RowDefinition Height="auto"></RowDefinition>
</Grid.RowDefinitions>
<ListView Grid.Row="0" x:Name="NetworkListview" ItemsSource="{Binding network.Layers}" IsSynchronizedWithCurrentItem="True">
<ListView.View>
<GridView>
<GridViewColumn Width="100" Header="layer name" DisplayMemberBinding="{Binding Name}"/>
<GridViewColumn Width="60" Header="neurons" CellTemplate="{StaticResource NeuronsTemplate}"/>
<GridViewColumn Width="110" Header="activation" CellTemplate="{StaticResource ActivationTemplate}"/>
</GridView>
</ListView.View>
</ListView>
<UniformGrid Grid.Row="1" Rows="1">
<Button Name="AddLayerButton" Click="AddLayerButton_Click">Add layer</Button>
<Button Name="RemoveLayerButton" Click="RemoveLayerButton_Click">Remove layer</Button>
</UniformGrid>
</Grid>
</TabItem>
<TabItem Header="Data set">
<UniformGrid Columns="2" Height="70" Width="220">
<Label>input dimmension</Label>
<TextBox Text="{Binding Path=data_set.InputDimmension, Mode=TwoWay, Converter={StaticResource StringToInt}}"></TextBox>
<Label>output dimmension</Label>
<TextBox Text="{Binding Path=data_set.OutputDimmension, Mode=TwoWay, Converter={StaticResource StringToInt}}"></TextBox>
<Label>number of samples</Label>
<TextBox Text="{Binding Path=data_set.SamplesNumber, Mode=TwoWay}"></TextBox>
</UniformGrid>
</TabItem>
<TabItem Header="Training">
<UniformGrid Columns="2" Width="230" Height="170">
<Label>learning rate</Label>
<TextBox Text="{Binding Path=training.LearningRate, Mode=TwoWay, Converter={StaticResource StringToFloat}}"></TextBox>
<Label>epochs</Label>
<TextBox Text="{Binding Path=training.Epochs, Mode=TwoWay, Converter={StaticResource StringToInt}}"></TextBox>
<Label>weights stddev</Label>
<TextBox Text="{Binding Path=training.WeightsStddev, Mode=TwoWay, Converter={StaticResource StringToFloat}}"></TextBox>
<Label>srand(0)</Label>
<CheckBox Margin="0,4,0,0" IsChecked="{Binding Path=training.SrandZero}"></CheckBox>
<Label>compute method</Label>
<ComboBox Name="ComputeMethodCombo" ItemsSource="{Binding Source={StaticResource ComputeMethodEnum}}" SelectedValue="{Binding Path=training.ComputeMethod}"></ComboBox>
<Label>select device</Label>
<ComboBox Name="DeviceComboBox" SelectedIndex="{Binding Path=training.DeviceIndex}"></ComboBox>
<Label>click to run test</Label>
<Button Margin="2" Name="RunTestButton" Click="RunTestButton_Click">Run test</Button>
</UniformGrid>
</TabItem>
<TabItem Header="Output">
<Grid>
<Grid.RowDefinitions>
<RowDefinition Height="*"></RowDefinition>
<RowDefinition Height="auto"></RowDefinition>
</Grid.RowDefinitions>
<TextBox Grid.Row="0" Name="LogTextBox"></TextBox>
<UniformGrid Grid.Row="1" Rows="1">
<Button>Save</Button>
<Button Name="ClearButton" Click="ClearButton_Click">Clear</Button>
<Button>Eerror chart</Button>
<Button>Speed chart</Button>
</UniformGrid>
</Grid>
</TabItem>
</TabControl>
<StatusBar Grid.Row="2">
<StatusBarItem>
<TextBlock>text</TextBlock>
</StatusBarItem>
</StatusBar>
</Grid>
轉換器：
public class BoolToVisibilityConverter : IValueConverter
{
public object Convert(object value, Type targetType,
object parameter, System.Globalization.CultureInfo culture)
{
bool param = bool.Parse(parameter as string);
bool val = (bool)value;
return val == param ? Visibility.Visible : Visibility.Hidden;
}
public object ConvertBack(object value, Type targetType,
object parameter, System.Globalization.CultureInfo culture)
{
throw new NotImplementedException();
}
}
，幷包含這勢必列表視圖的ObservableCollection網絡類：
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Collections.ObjectModel;
using System.ComponentModel;
using System.Windows;
using System.Xml.Serialization;
namespace fastnn_speedTest
{
public class Network
{
public class Layer : INotifyPropertyChanged
{
public enum ActivFunction { LINEAR, EXPONENTIAL, ARCUSTANGENT }
private string name;
[XmlIgnore]
public string Name
{
get
{
return name;
}
set
{
name = value;
RaisePropertyChanged("Name");
}
}
[XmlAttribute]
public ActivFunction Activation { get; set; }
[XmlAttribute]
public int Neurons { get; set; }
public event PropertyChangedEventHandler PropertyChanged;
protected virtual void RaisePropertyChanged(String propertyName)
{
if (PropertyChanged != null)
{
PropertyChanged(this, new PropertyChangedEventArgs(propertyName));
}
}
}
public ObservableCollection<Layer> Layers { get; set; }
public Network()
{
Layers = new ObservableCollection<Layer>();
}
public void AddLayer(Layer layer)
{
int last = Layers.Count;
if (last > 0)
{
Layers.Last().Name = "Layer " + last + " (hidden)";
}
layer.Name = "Layer " + (last + 1) + " (output)";
Layers.Add(layer);
}
public void RemoveLayer(int index)
{
if(index >= 0 && index < Layers.Count)
Layers.RemoveAt(index);
}
public void Clear()
{
Layers.Clear();
}
public void Validate()
{
if (Layers.Count < 1)
throw new ArgumentException("minimum number of layers is 1");
foreach (Layer layer in Layers)
{
if (layer.Neurons <= 0)
throw new ArgumentException("neurons in each layer must be > 0");
}
if(Layers.Last().Activation != Layer.ActivFunction.LINEAR)
throw new ArgumentException("last layer must be linear");
}
}
}
你可以發佈轉換器的代碼？我懷疑問題出在那裏，因爲你正在發送顯式的轉換器參數。 – 2011-05-01 16:40:17
我沒有實現轉換器 - 這是WPF默認的... – user606521 2011-05-01 17:10:48