从XAML文件填充与复选框列表视图 [英] Populating a listview with checkboxes from a XAML file
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问题描述
首先，非常感谢戴夫·克莱默和Jasti为我安排这么远！
First, many thanks to Dave Clemmer and Jasti for getting me this far!
我有一个ListView看起来像这样（除了Load按钮已经被添加，因为这截屏拍摄）：
I've got a listview that looks like this (except a Load button has been added since this screen shot was taken):
这里的XAML code：
Here's the XAML code:
<Window.Resources>
<DataTemplate x:Key="YoungPicCell">
<StackPanel Orientation="Horizontal">
<Image Height="200" Width="200" Stretch="None" Source="{Binding YoungPic}" />
</StackPanel>
</DataTemplate>
<DataTemplate x:Key="MediumPicCell">
<StackPanel Orientation="Horizontal">
<Image Height="200" Width="200" Stretch="None" Source="{Binding MediumPic}" />
</StackPanel>
</DataTemplate>
<DataTemplate x:Key="AdultPicCell">
<StackPanel Orientation="Horizontal">
<Image Height="200" Width="200" Stretch="None" Source="{Binding AdultPic}" />
</StackPanel>
</DataTemplate>
<DataTemplate x:Key="TerrainCell">
<StackPanel Orientation="Vertical">
<CheckBox Content="Salt Water" Name="SaltWaterCheckbox" IsThreeState="False" IsChecked="{Binding Saltwater}" />
<CheckBox Content="Fresh Water" Name="FreshWaterCheckbox" IsThreeState="False" IsChecked="{Binding Freshwater}" />
<CheckBox Content="Grassland / Plains" Name="GrasslandsCheckbox" IsThreeState="False" IsChecked="{Binding Grassland}" />
<CheckBox Content="Swamp" Name="SwampCheckbox" IsThreeState="False" IsChecked="{Binding Swamp}" />
<CheckBox Content="Tropical Forest" Name="TropicalForestCheckbox" IsThreeState="False" IsChecked="{Binding TropicalForest}" />
<CheckBox Content="Forest" Name="ForestCheckbox" IsThreeState="False" IsChecked="{Binding Forest}" />
<CheckBox Content="Forest Edge" Name="ForestEdgeCheckbox" IsThreeState="False" IsChecked="{Binding ForestEdge}" />
<CheckBox Content="Sand" Name="SandCheckbox" IsThreeState="False" IsChecked="{Binding Sand}" />
<CheckBox Content="Coastal" Name="CoastalCheckbox" IsThreeState="False" IsChecked="{Binding Coastal}" />
<CheckBox Content="River Border" Name="RiverBorderCheckbox" IsThreeState="False" IsChecked="{Binding RiverBorder}" />
<CheckBox Content="LakeBorder" Name="LakeBorderCheckbox" IsThreeState="False" IsChecked="{Binding LakeBorder}" />
<CheckBox Content="Floodplain" Name="FloodplainCheckbox" IsThreeState="False" IsChecked="{Binding Floodplain}" />
</StackPanel>
</DataTemplate>
<DataTemplate x:Key="PlacePlantsCell">
<StackPanel Orientation="Vertical">
<Label Margin="10" Content="Random" HorizontalAlignment="Center" ></Label>
<Slider Margin="10" Width="190" Value="50" Orientation="Horizontal" HorizontalAlignment="Center" IsSnapToTickEnabled="True" Maximum="100" TickPlacement="BottomRight" TickFrequency="5"> </Slider>
<Button Margin="10" Content="Randomly Seed Plants" HorizontalAlignment="Center" Height="23" Name="SeedButton" ></Button>
</StackPanel>
</DataTemplate>
</Window.Resources>
<DockPanel>
<Grid>
<ListView ItemsSource="{Binding Path=lsvData, Mode=TwoWay}" Name="listView1">
<ListView.View>
<GridView>
<GridViewColumn Width="152" Header="Name" DisplayMemberBinding="{Binding Path=Name}" />
<GridViewColumn Width="202" Header="Picture of Young Plant" DisplayMemberBinding="{Binding Path=YoungPic}" CellTemplate="{StaticResource YoungPicCell}" />
<GridViewColumn Width="202" Header="Picture of Medium Plant" DisplayMemberBinding="{Binding Path=MediumPic}" CellTemplate="{StaticResource MediumPicCell}" />
<GridViewColumn Width="202" Header="Picture of Adult Plant" DisplayMemberBinding="{Binding Path=AdultPic}" CellTemplate="{StaticResource AdultPicCell}" />
<GridViewColumn Width="202" Header="Terrain / Environments" CellTemplate="{StaticResource TerrainCell}" />
<GridViewColumn Width="202" Header="Place Plants" CellTemplate="{StaticResource PlacePlantsCell}" />
</GridView>
</ListView.View>
</ListView>
<Button Content="New Plant" DockPanel.Dock="Bottom" Height="23" HorizontalAlignment="Left" Margin="160,240,0,0" Name="NewPlant" VerticalAlignment="Top" Width="75" Click="NewPlant_Click" />
<Button Content="Save" DockPanel.Dock="Bottom" Height="23" HorizontalAlignment="Center" Margin="1099,240,15,0" Name="SavePlant" VerticalAlignment="Top" Width="75" Click="SavePlant_Click"/>
<Button Content="Load" DockPanel.Dock="Bottom" Height="23" HorizontalAlignment="Left" Margin="26,240,0,0" Name="LoadPlants" VerticalAlignment="Top" Click="LoadPlants_Click" Width="75" />
</Grid>
</DockPanel>
下面是当你点击Load按钮的加载XML文件：
Here is the XML file that is being loaded when you click on the Load button:
<?xml version="1.0" encoding="UTF-8"?>
<Plants>
<Species>
<Name>Alethopteris</Name>
<YoungPic>AlethopterisYoung.bmp</YoungPic>
<MediumPic>AlethopterisMedium.bmp</MediumPic>
<AdultPic>AlethopterisAdult.bmp</AdultPic>
<Saltwater>true</Saltwater>
<FreshWater>False</FreshWater>
<Grasslands>False</Grasslands>
<Swamp>False</Swamp>
<TropicalForrest>False</TropicalForrest>
<Forest>False</Forest>
<ForestEdge>False</ForestEdge>
<Sand>False</Sand>
<Coastal>False</Coastal>
<RiverBorder>False</RiverBorder>
<LakeBorder>False</LakeBorder>
<Floodplain>False</Floodplain>
</Species>
</Plants>
和，最后，这里的相关code背后：
And, lastly, here's the relevant code behind:
public PlantDisplay()
{
InitializeComponent();
_wvm = new WindowViewModel();
this.DataContext = _wvm;
}
public class LVData
{
public string Name { get; set; }
public string YoungPic { get; set; }
public string MediumPic { get; set; }
public string AdultPic { get; set; }
public bool SaltWater { get; set; }
public bool FreshWater { get; set; }
public bool Grasslands { get; set; }
public bool Swamp { get; set; }
public bool TropicalForrest { get; set; }
public bool Forest { get; set; }
public bool ForestEdge { get; set; }
public bool Sand { get; set; }
public bool Coastal { get; set; }
public bool RiverBorder { get; set; }
public bool LakeBorder { get; set; }
public bool Floodplain { get; set; }
}
public class WindowViewModel : INotifyPropertyChanged
{
public event PropertyChangedEventHandler PropertyChanged;
//called when a property is changed
protected void RaisePropertyChanged(string PropertyName)
{
if (PropertyChanged != null)
{
PropertyChanged(this, new PropertyChangedEventArgs(PropertyName));
}
}
private ObservableCollection<LVData> _plantList = new ObservableCollection<LVData>();
public ObservableCollection<LVData> lsvData
{
get { return _plantList; }
set { _plantList = value; RaisePropertyChanged("lsvData"); }
}
public void PopulateDataFromXML()
{
XDocument loaded = XDocument.Load(@"DinoIslandPlants.xml");
var Plants = from x in loaded.Descendants("Plants")
select new
{
Name = x.Descendants("Name").First().Value,
YoungPic = x.Descendants("YoungPic").First().Value,
MediumPic = x.Descendants("MediumPic").First().Value,
AdultPic = x.Descendants("AdultPic").First().Value,
SaltWater = x.Descendants("SaltWater").First().Value
};
foreach (var _plant in Plants)
{
_plantList.Add(new LVData {
Name = _plant.Name,
YoungPic = _plant.YoungPic,
MediumPic = _plant.MediumPic,
AdultPic = _plant.AdultPic,
SaltWater = Convert.ToBoolean(_plant.SaltWater) });
}
RaisePropertyChanged("lsvData");
}
}
我有两个问题：
- 它的崩溃在这条线：盐水= Convert.ToBoolean（_plant.SaltWater）}）;
- 这不是装工厂的形象，而是显示路径字符串。
任何意见，建议？
为我节省了XAML文件中boolean值的方法是否正确？
Any ideas, suggestions? Is the way I'm saving a boolean in the XAML file correct?
在此先感谢！
推荐答案
有关问题1的问题是，在你的XML你有项目咸水。
在您的code你有这一行。
The problem regarding question 1 is that in your XML you have the item Saltwater. In your code you have this line.
SaltWater = x.Descendants("SaltWater").First().Value
注意咸水和海水之间的区别？如果你解决你的情况，我相信你会选择那一问题。
Notice the difference between SaltWater and Saltwater? If you fix your case I believe you will sort that problem.
我不知道为什么。首先（）。值不会抛出异常。也许其他人可以回答你。
I am not sure why .First().Value does not throw an exception. Maybe another person could answer that for you.
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