C# 将当前项作为数据模板中的命令参数发送

考虑以下类别：

public class Customer
{
    public Int32 Id { get; set; }
    public String FirstName { get; set; }
    public String LastName { get; set; }
}

考虑以下视图模型（在MVVM设计模式中）

试试这个：

 <Button Content="DELETE!" 
         Command="{Binding ElementName=CustomersManagement, Path=DataContext.RemoveCustomer}" 
         CommandParameter="{Binding}"/>

---

请参考以下示例

<Window x:Class="DelegateComd_Learning.MainWindow"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    Title="MainWindow" Height="350" Width="525" x:Name="CustomersManagement" >
<Window.Resources>       

</Window.Resources>
<StackPanel>
    <ItemsControl ItemsSource="{Binding Persons}">
        <ItemsControl.ItemTemplate>
            <DataTemplate>
                <StackPanel Orientation="Horizontal" x:Name="stck">
                    <Label Content="{Binding FirstName}" />
                    <Label Content="{Binding LastName }" />
                    <Button Content="DELETE!" DataContext="{Binding ElementName=CustomersManagement , Path=DataContext }" Command="{Binding RemoveCustomer }"
                            CommandParameter="{Binding ElementName=stck,Path=DataContext}"/>
                </StackPanel>
            </DataTemplate>
        </ItemsControl.ItemTemplate>
        <ItemsControl.ItemsPanel>
            <ItemsPanelTemplate>
                <WrapPanel />
            </ItemsPanelTemplate>
        </ItemsControl.ItemsPanel>
    </ItemsControl>
</StackPanel>

公共部分类主窗口：窗口
{
公共主窗口（）
{
初始化组件（）；
this.DataContext=newtestviewmodel（）；
}      
}
类TestViewModel
{
私有可观测集合myVar；
公众人士
{
获取{return myVar；}
设置{myVar=value；}
}
public DelegateCommand RemoveCustomer{get；set；}
公共TestViewModel（）
{
人员=新的可观察集合（）；
对于（int i=0；i<10；i++）
{
添加（newperson（）{FirstName=“Test”+i，LastName=“Testlst”+i}）；
}
RemoveCustomer=新的DelegateCommand（Removeperson）；
}
私人无效删除人（个人prps）
{
}
}
公共阶层人士
{
私有字符串名；
公共字符串名
{
获取{return firstName；}
设置{firstName=value；}
}
私有字符串lastName；
公共字符串姓氏
{
获取{return lastName；}
设置{lastName=value；}
}
}

@Will您能提供更多详细信息吗？绑定到整个DataContext而不是DataTemplate绑定到的对象。@rolls绑定有一个默认路径，值为“.”，没问题。

DataContext="{Binding ElementName=CustomersManagement, Path=DataContext }" 
    Command="{Binding RemoveCustomer }" CommandParamter="??????????"

 <Button Content="DELETE!" 
         Command="{Binding ElementName=CustomersManagement, Path=DataContext.RemoveCustomer}" 
         CommandParameter="{Binding}"/>

<Window x:Class="DelegateComd_Learning.MainWindow"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    Title="MainWindow" Height="350" Width="525" x:Name="CustomersManagement" >
<Window.Resources>       

</Window.Resources>
<StackPanel>
    <ItemsControl ItemsSource="{Binding Persons}">
        <ItemsControl.ItemTemplate>
            <DataTemplate>
                <StackPanel Orientation="Horizontal" x:Name="stck">
                    <Label Content="{Binding FirstName}" />
                    <Label Content="{Binding LastName }" />
                    <Button Content="DELETE!" DataContext="{Binding ElementName=CustomersManagement , Path=DataContext }" Command="{Binding RemoveCustomer }"
                            CommandParameter="{Binding ElementName=stck,Path=DataContext}"/>
                </StackPanel>
            </DataTemplate>
        </ItemsControl.ItemTemplate>
        <ItemsControl.ItemsPanel>
            <ItemsPanelTemplate>
                <WrapPanel />
            </ItemsPanelTemplate>
        </ItemsControl.ItemsPanel>
    </ItemsControl>
</StackPanel>

 public partial class MainWindow : Window
{

    public MainWindow()
    {
        InitializeComponent();
        this.DataContext = new TestViewModel();
    }      
}
class TestViewModel
{
    private ObservableCollection<Person> myVar;

    public ObservableCollection<Person> Persons
    {
        get { return myVar; }
        set { myVar = value; }
    }

    public DelegateCommand<Person> RemoveCustomer { get; set; }

    public TestViewModel()
    {
        Persons = new ObservableCollection<Person>();
        for (int i = 0; i < 10; i++)
        {
            Persons.Add(new Person() { FirstName = "Test"+i, LastName = "Testlst"+i });
        }
        RemoveCustomer = new DelegateCommand<Person>(Removeperson);
    }
    private void Removeperson(Person prps)
    {

    }
}

public class Person
{
    private string firstName;

    public string FirstName
    {
        get { return firstName; }
        set { firstName = value; }
    }
    private string lastName;

    public string LastName
    {
        get { return lastName; }
        set { lastName = value; }
    }
}