Question

如何更改用于GridViewColumn的CellTemplate的Datatemplate想要更改为其他datatemplate，以便用户只有在选择特定行并且焦点位于文本框上时才能编辑第一列的值

我创建了一个示例应用来重现问题。

以下是xaml文件中的代码：

<Window x:Class="WpfApplication1.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"
        xmlns:local="clr-namespace:WpfApplication1">
    <Window.Resources>

        <Style TargetType="{x:Type TextBox}" >
            <Setter Property="BorderThickness" Value="0"/>
            <Style.Triggers>
                <Trigger Property="IsFocused" Value="True">
                    <Setter Property="IsReadOnly" Value="False" />
                </Trigger>
                <Trigger Property="IsFocused" Value="False">
                    <Setter Property="Background" Value="{Binding RelativeSource={RelativeSource Mode=FindAncestor, AncestorType={x:Type ListBoxItem}}, Path=Background}"/>
                    <Setter Property="IsReadOnly" Value="True" />
                </Trigger>
                <Trigger Property="IsReadOnly" Value="False">
                    <Setter Property="Background" Value="White"/>                    
                </Trigger>
            </Style.Triggers>
        </Style>

        <DataTemplate x:Key="DefaultTemplate">
            <StackPanel Orientation="Horizontal">
                <TextBlock Text="{Binding Name}"/>
            </StackPanel>
        </DataTemplate>

        <DataTemplate x:Key="EditableTemplate">
            <StackPanel Orientation="Horizontal">
                <TextBox Text="{Binding Name}"/>
            </StackPanel>
        </DataTemplate>

        <Style x:Key="ListViewStyle" TargetType="{x:Type ListView}">
            <Setter Property="View">
                <Setter.Value>
                    <GridView >
                        <GridViewColumn Header="Name" CellTemplate="{StaticResource DefaultTemplate}"/>
                        <GridViewColumn Header="Age">
                            <GridViewColumn.CellTemplate>
                            <DataTemplate>
                                <StackPanel Orientation="Horizontal">
                                    <TextBlock Text="{Binding Age}"/>
                                </StackPanel>
                            </DataTemplate>
                            </GridViewColumn.CellTemplate>
                        </GridViewColumn>

                    </GridView>
                </Setter.Value>
            </Setter>
        </Style>

    </Window.Resources>
    <StackPanel>       
        <ListView x:Name="FoldersListView" Margin="3" SelectionMode="Single"  ItemsSource="{Binding Path=ObjectCollection}"                  
                         IsSynchronizedWithCurrentItem="True" Style="{StaticResource ListViewStyle}">

        </ListView>
     </StackPanel>

</Window>

下面是xaml.cs文件

using System;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.ComponentModel;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;

namespace WpfApplication1
{

    public class ViewModelBase : INotifyPropertyChanged
    {
        public event PropertyChangedEventHandler PropertyChanged;
        public void RaisePropertyChanged(string propertyName)
        {
            if (null != PropertyChanged)
            {
                PropertyChanged(this, new PropertyChangedEventArgs(propertyName));
            }
        }
    }

    /// <summary>
    /// Interaction logic for MainWindow.xaml
    /// </summary>
    public partial class MainWindow : Window
    {
        public testVM VM = new testVM();
        public MainWindow()
        {
            InitializeComponent();
            this.DataContext = VM;
        }     
    }

    public class testVM : ViewModelBase
    {
        List<emplyee> myProperty = new List<emplyee>();

        private string _title;
        public string Title
        {
            get { return _title; }
            set
            {
                _title = value;
                RaisePropertyChanged("Title");
            }
        }

        public testVM()
        {
            objectCollection.Add(new emplyee() { Name = "aaa India",Age="10" });
            objectCollection.Add(new emplyee() { Name = "bbb India",Age="20" });
            objectCollection.Add(new emplyee() { Name = "ccc India",Age="30" });
            objectCollection.Add(new emplyee() { Name = "ddd India",Age="40" });
        }

        public List<emplyee> MyProperty { get{return myProperty;} }

        private ObservableCollection<emplyee> objectCollection = new ObservableCollection<emplyee>();
        public ObservableCollection<emplyee> ObjectCollection
        {
            get
            {


                return objectCollection;
            }
            set
            {
                objectCollection = value;

            }
        }


    }

    public class emplyee
    {
        public emplyee()
        {

        }

        public string Name { get; set; }
        public string Age { get; set; }

    }
}

如何动态选择数据模板？

Answer 1

要动态选择数据模板，请使用DataTemplateSelector类。您必须覆盖其SelectTemplate方法。

如何更改用于GridViewColumn的CellTemplate的Datatemplate

1 个答案: