C# 当combobox本身是datagrid列的一部分时，无法将combobox选定项绑定到文本框

当我在DataGrid中使用的comboxbox中更改所选索引时，我希望将主题名称绑定到文本框中

这是我的密码 ////

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更改选择时，请提供将组合框的项目绑定到文本框的任何解决方案。

您可以通过在DataGrid上设置IsSynchronizedWithCurrentItem=“True”来实现此目的

 <DataGrid x:Name="GridWithComboBox" IsSynchronizedWithCurrentItem="True" .....

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IsSynchronizedWithCurrentItem=“True”无法使用当前代码。我是否也需要更改文本框绑定？在文本框绑定中使用SelectedItem而不是SelectedValue，但我得到的输出与以前相同。当我在组合框中更改主题名称时，它不会更新我的文本框值。当您更改组合选择时，它是否会影响其他单元格？在StudentModel上实现INotifyPropertyChanged接口，绑定仅在触发PropertyChanged事件时才起作用

 using System;
 using System.Windows;
 using System.Windows.Data;

 namespace WpfGridDemo
 {
 public partial class MainWindow : Window
 {
     public MainWindow()
     {
         InitializeComponent();
         StudentDetails studentDetailsList = new StudentDetails();
         this.DataContext = studentDetailsList;
     }
 }
 }

using System.Collections.ObjectModel;

namespace WpfGridDemo
{
public class StudentDetails
{

    public ObservableCollection<Subjects> SubjectList
    {
        get;
        set;
    }

    public ObservableCollection<StudentModel> StudentDetailsList
    {
        get;
        set;
    }

    public StudentDetails()
    {
        StudentDetailsList = new ObservableCollection<StudentModel>();
        StudentDetailsList.Add(new StudentModel() { Name = "Rohit", Subject = "Java" });
        StudentDetailsList.Add(new StudentModel() { Name = "Tarun", Subject = "C#" });

        SubjectList = new ObservableCollection<Subjects>();
        SubjectList.Add(new Subjects() { SubjectNames = "Java" });
        SubjectList.Add(new Subjects() { SubjectNames = "C#" });
        SubjectList.Add(new Subjects() { SubjectNames = "Python" });
        SubjectList.Add(new Subjects() { SubjectNames = "Rails" });
    }
 }
}

  using System.ComponentModel;
  namespace WpfGridDemo
   {
   public class StudentModel : INotifyPropertyChanged
   {
    private string subject;
    public string Subject
    {
        get
        {
            return this.subject;
        }
        set
        {
            this.subject = value;
            this.OnPropertyChanged("Subject");
        }
    }

    public string Name
    { get; set; }


    public event PropertyChangedEventHandler PropertyChanged;

    private void OnPropertyChanged(string propertyName)
    {
        if (PropertyChanged != null)
        {
            PropertyChanged.Invoke(this, new PropertyChangedEventArgs(propertyName));
        }
    }

}

public class Subjects : INotifyPropertyChanged
{
    private string _subjectNames;
    public string SubjectNames
    {
        get
        {
            return this._subjectNames;
        }
        set
        {
            this._subjectNames = value;
            this.OnPropertyChanged("SubjectNames");
        }
    }

    public event PropertyChangedEventHandler PropertyChanged;

    private void OnPropertyChanged(string propertyName)
    {
        if (PropertyChanged != null)
        {
            PropertyChanged.Invoke(this, new PropertyChangedEventArgs(propertyName));
        }
    }
   }
 }

 <DataGrid x:Name="GridWithComboBox" IsSynchronizedWithCurrentItem="True" .....

SelectedValue="{Binding Subject,UpdateSourceTrigger=PropertyChanged}"