在c#wpf中,我可以动态地将listview列构建为类方法吗?
我将使用listview显示数据列表,数据类包含以下元素:在c#wpf中,我可以动态地将listview列构建为类方法吗?,c#,wpf,listview,dynamic,C#,Wpf,Listview,Dynamic,我将使用listview显示数据列表,数据类包含以下元素: class MyData { static Random rnd = new Random(); public int id { get; set; } public string name { get; set; } public bool selected { get; set; } private LED[] LEDs = new LED[21]; private byte[] s
class MyData
{
static Random rnd = new Random();
public int id { get; set; }
public string name { get; set; }
public bool selected { get; set; }
private LED[] LEDs = new LED[21];
private byte[] servos = new byte[21];
}
并希望以如下表格格式显示数据:
{selected} {id} {name} {servo[1]} {servo[2]} ......
(伺服[0]应隐藏)
对于每列的布局:
- {selected] : checkbox
- {id} : right alignment
- {name] : left alignment
- {servo} : right alignment, with background based on LED setting
我已经构建了列表视图,如下所示
<ListView x:Name="lvData" FontSize="13" Background="LightGoldenrodYellow" Margin="0,0,0,0" >
<ListView.ItemContainerStyle>
<Style TargetType="ListViewItem">
<Setter Property="HorizontalContentAlignment" Value="Stretch"/>
</Style>
</ListView.ItemContainerStyle>
<ListView.View>
<GridView>
<GridViewColumn >
<GridViewColumn.CellTemplate>
<DataTemplate>
<CheckBox IsChecked="{Binding selected}" Checked="Selection_Changed" Unchecked="Selection_Changed" />
</DataTemplate>
</GridViewColumn.CellTemplate>
</GridViewColumn>
<GridViewColumn Header="id" Width="60">
<GridViewColumn.CellTemplate>
<DataTemplate >
<TextBlock Text="{Binding id}" TextAlignment="Right" />
</DataTemplate>
</GridViewColumn.CellTemplate>
</GridViewColumn>
<GridViewColumn Header="name" Width="100" DisplayMemberBinding="{Binding name}"/>
<GridViewColumn Header="s01" Width="35">
<GridViewColumn.CellTemplate>
<DataTemplate>
<Grid Background="{Binding Path=LED01}" Margin="-5,0,-5,0">
<Label Margin="0,0,0,0" Content="{Binding Path=S01}" HorizontalContentAlignment="Right"></Label>
</Grid>
</DataTemplate>
</GridViewColumn.CellTemplate>
</GridViewColumn>
<GridViewColumn Header="s02" Width="35">
<GridViewColumn.CellTemplate>
<DataTemplate>
<Grid Background="{Binding Path=LED02}" Margin="-5,0,-5,0">
<Label Margin="0,0,0,0" Content="{Binding Path=S01}" HorizontalContentAlignment="Right"></Label>
</Grid>
</DataTemplate>
</GridViewColumn.CellTemplate>
</GridViewColumn>
:
{repeat for s03...s20}
:
</GridView>
</ListView.View>
</ListView>
两种方法GetLED和GetServo根据给定索引的阵列LED和Servo的值返回颜色和显示
我已经多次重复GridViewColumn块,并且创建了40个虚拟属性,因为它不能直接绑定到方法,这看起来真的很愚蠢
我可以知道是否有任何简单的方法来构建listview吗
实际上,数组的大小不是固定的,21只是最大大小
我想知道它是否可以动态构建列,以便可以根据实际大小创建列,并且这些重复的列可以在循环中完成。并基于类方法设置背景和数据内容,这样我就可以直接设置为GetLED(?)和GetServo(?),而无需为其构建虚拟属性
提前谢谢。你的问题有点冗长和合乎逻辑。我试图实现您需要的功能 敬请关注以下事项: 型号 我将LED和伺服细节分为不同的类,并将该类的List对象分为MyData类
class MyData
{
public int id { get; set; }
public string name { get; set; }
public bool selected { get; set; }
public List<MySubData> lstSubData { get; set; }
}
class MySubData
{
public string LED;
public string Servo;
}
XAML
<Window x:Class="WPFTest.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
xmlns:local="clr-namespace:WPFTest"
mc:Ignorable="d"
Title="TestWPF" Height="300" Width="400"
WindowStyle="SingleBorderWindow"
WindowStartupLocation="CenterScreen">
<Grid>
<ListView x:Name="lvData" FontSize="13" Background="LightGoldenrodYellow" Margin="0,0,0,0" >
<ListView.ItemContainerStyle>
<Style TargetType="ListViewItem">
<Setter Property="HorizontalContentAlignment" Value="Stretch"/>
</Style>
</ListView.ItemContainerStyle>
</ListView>
</Grid>
</Window>
代码隐藏
我应用的主要逻辑是代码隐藏(C#)。我生成ListView。仅在CS页面中查看。
此代码将为UI和数据生成动态GridView和DataTable
我采集了样本数据来模拟您的需求。您可以获取实际数据。我使用变量globalServo来定义列数的设置(正如您在注释中提到的)
public partial class MainWindow : Window
{
public int globalServo = 21;
public MainWindow()
{
InitializeComponent();
List<MyData> lstMyData = new List<MyData>();
for (int i = 1; i < 6; i++)
{
List<MySubData> lstMySubData = new List<MySubData>();
for (int j = 0; j < globalServo; j++)
{
lstMySubData.Add(new MySubData() { LED = "LED" + j, Servo = "Servo" + j });
}
lstMyData.Add(new MyData()
{
id = i,
name = "name-" + i,
selected = Convert.ToBoolean(i % 2),
lstSubData = lstMySubData
});
}
lvData.View = GenerateGridView();
lvData.ItemsSource = GenerateSource(lstMyData).DefaultView;
}
private GridView GenerateGridView()
{
GridView view = new GridView();
view.Columns.Add(new GridViewColumn() { Header = "Id", DisplayMemberBinding = new Binding("Id") });
view.Columns.Add(new GridViewColumn() { Header = "Name", DisplayMemberBinding = new Binding("Name") });
view.Columns.Add(new GridViewColumn() { Header = "Selected", CellTemplate = GetCheckboxTemplate() });
for (int i = 1; i <= globalServo; i++)
{
view.Columns.Add(new GridViewColumn() { Header = "Servo" + i, CellTemplate = GetTextBlockTemplate(i) });
}
return view;
}
private DataTable GenerateSource(List<MyData> dataList)
{
DataTable dt = new DataTable();
dt.Columns.Add("Id");
dt.Columns.Add("Name");
dt.Columns.Add("Selected");
for (int i = 1; i <= globalServo; i++)
{
dt.Columns.Add("Servo" + i);
}
foreach (var item in dataList)
{
DataRow row = dt.NewRow();
row["Id"] = item.id;
row["Name"] = item.name;
row["Selected"] = item.selected;
for (int i = 1; i <= globalServo; i++)
{
row["Servo" + i] = item.lstSubData[i - 1].Servo + "##" + item.lstSubData[i - 1].LED;
}
dt.Rows.Add(row);
}
return dt;
}
private DataTemplate GetCheckboxTemplate()
{
DataTemplate dt = new DataTemplate(typeof(CheckBox));
FrameworkElementFactory chkElement = new FrameworkElementFactory(typeof(CheckBox));
dt.VisualTree = chkElement;
Binding bind = new Binding();
bind.Path = new PropertyPath("Selected");
chkElement.SetBinding(CheckBox.IsCheckedProperty, bind);
return dt;
}
private DataTemplate GetTextBlockTemplate(int Index)
{
TextConverter textConverter = new TextConverter();
ColorConverter colorConverter = new ColorConverter();
DataTemplate dt = new DataTemplate(typeof(TextBlock));
FrameworkElementFactory txtElement = new FrameworkElementFactory(typeof(TextBlock));
dt.VisualTree = txtElement;
Binding bind = new Binding();
bind.Path = new PropertyPath("Servo" + Index);
bind.Converter = textConverter;
txtElement.SetBinding(TextBlock.TextProperty, bind);
Binding bind1 = new Binding();
bind1.Path = new PropertyPath("Servo" + Index);
bind1.Converter = colorConverter;
txtElement.SetBinding(TextBlock.BackgroundProperty, bind1);
return dt;
}
}
公共部分类主窗口:窗口
{
公共int globalServo=21;
公共主窗口()
{
初始化组件();
List lstMyData=新列表();
对于(int i=1;i<6;i++)
{
List lstMySubData=新列表();
对于(int j=0;j 对于(int i=1;i LED和伺服的大小将始终相同,对吗?是的,它将为它们构建一个类,因此它将成为带有LED的伺服类数组。但在现有程序中,它们是两个数组。好的。我正在考虑解决方案。我想到了一种方法,但需要一些时间来告诉您。如果LED和伺服某些行的列为空?例如:对于id=1,有10个LED和伺服,但是对于id=2,有15个。然后在ListView中,对于id=1的行,5列将显示为空。我想最简单的方法可能是用代码而不是xaml构建这些列。非常感谢,我将尝试了解详细信息。并在测试后更新状态。@JamesMA检查一下,我还加了“注释”。让我知道。简而言之,我将所有内容都移到了代码后面。非常感谢您提供的示例,它在我的案例中似乎很有效。我尝试研究代码,因为我以前没有尝试从代码中构建listview,我想在这里澄清一些逻辑。似乎已经创建了一个数据表,其中包含GetLED值和GetServo值的动态列由“##”分隔。移到我的例子中,lstSubData中元素的内容变成GetServo(i)+“##”+GetLED(i)。以及转换器(TextConverter和ColorConverter)将处理这些动态列以从中提取文本和颜色。在这种情况下,每当数据更新时,它可能需要重建DataTable。不是吗?这是否意味着listview无法直接链接到方法,因此它必须创建具有最终值的元素?顺便说一句,我可以知道如何在代码中设置textalignment吗?我不能在FrameworkElementFactory中找到这样的属性。是的。您每次都必须重新生成DataTable。我认为,在您的情况下没有其他方法。
<Window x:Class="WPFTest.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
xmlns:local="clr-namespace:WPFTest"
mc:Ignorable="d"
Title="TestWPF" Height="300" Width="400"
WindowStyle="SingleBorderWindow"
WindowStartupLocation="CenterScreen">
<Grid>
<ListView x:Name="lvData" FontSize="13" Background="LightGoldenrodYellow" Margin="0,0,0,0" >
<ListView.ItemContainerStyle>
<Style TargetType="ListViewItem">
<Setter Property="HorizontalContentAlignment" Value="Stretch"/>
</Style>
</ListView.ItemContainerStyle>
</ListView>
</Grid>
</Window>
public partial class MainWindow : Window
{
public int globalServo = 21;
public MainWindow()
{
InitializeComponent();
List<MyData> lstMyData = new List<MyData>();
for (int i = 1; i < 6; i++)
{
List<MySubData> lstMySubData = new List<MySubData>();
for (int j = 0; j < globalServo; j++)
{
lstMySubData.Add(new MySubData() { LED = "LED" + j, Servo = "Servo" + j });
}
lstMyData.Add(new MyData()
{
id = i,
name = "name-" + i,
selected = Convert.ToBoolean(i % 2),
lstSubData = lstMySubData
});
}
lvData.View = GenerateGridView();
lvData.ItemsSource = GenerateSource(lstMyData).DefaultView;
}
private GridView GenerateGridView()
{
GridView view = new GridView();
view.Columns.Add(new GridViewColumn() { Header = "Id", DisplayMemberBinding = new Binding("Id") });
view.Columns.Add(new GridViewColumn() { Header = "Name", DisplayMemberBinding = new Binding("Name") });
view.Columns.Add(new GridViewColumn() { Header = "Selected", CellTemplate = GetCheckboxTemplate() });
for (int i = 1; i <= globalServo; i++)
{
view.Columns.Add(new GridViewColumn() { Header = "Servo" + i, CellTemplate = GetTextBlockTemplate(i) });
}
return view;
}
private DataTable GenerateSource(List<MyData> dataList)
{
DataTable dt = new DataTable();
dt.Columns.Add("Id");
dt.Columns.Add("Name");
dt.Columns.Add("Selected");
for (int i = 1; i <= globalServo; i++)
{
dt.Columns.Add("Servo" + i);
}
foreach (var item in dataList)
{
DataRow row = dt.NewRow();
row["Id"] = item.id;
row["Name"] = item.name;
row["Selected"] = item.selected;
for (int i = 1; i <= globalServo; i++)
{
row["Servo" + i] = item.lstSubData[i - 1].Servo + "##" + item.lstSubData[i - 1].LED;
}
dt.Rows.Add(row);
}
return dt;
}
private DataTemplate GetCheckboxTemplate()
{
DataTemplate dt = new DataTemplate(typeof(CheckBox));
FrameworkElementFactory chkElement = new FrameworkElementFactory(typeof(CheckBox));
dt.VisualTree = chkElement;
Binding bind = new Binding();
bind.Path = new PropertyPath("Selected");
chkElement.SetBinding(CheckBox.IsCheckedProperty, bind);
return dt;
}
private DataTemplate GetTextBlockTemplate(int Index)
{
TextConverter textConverter = new TextConverter();
ColorConverter colorConverter = new ColorConverter();
DataTemplate dt = new DataTemplate(typeof(TextBlock));
FrameworkElementFactory txtElement = new FrameworkElementFactory(typeof(TextBlock));
dt.VisualTree = txtElement;
Binding bind = new Binding();
bind.Path = new PropertyPath("Servo" + Index);
bind.Converter = textConverter;
txtElement.SetBinding(TextBlock.TextProperty, bind);
Binding bind1 = new Binding();
bind1.Path = new PropertyPath("Servo" + Index);
bind1.Converter = colorConverter;
txtElement.SetBinding(TextBlock.BackgroundProperty, bind1);
return dt;
}
}