C# 具有网格高度的数据绑定类属性

我有以下课程：

public class Height
{
    public GridLength GridHeight = new GridLength(200);
}

我想将此字段绑定到网格的第一行高度：

    <Grid.RowDefinitions>
        <RowDefinition Height="{Binding Path=GridHeight, Mode=OneWay}"></RowDefinition>
        <RowDefinition></RowDefinition>
    </Grid.RowDefinitions>

然而，根本没有互动。我看不出有什么不对。

---

非常感谢有人能解释如何将类属性数据绑定到行高属性。

您需要将

GridHeight

设置为属性，而不是字段

如果希望更新

Height

类，可能还需要为该类实现

public class Height
{
    public Height() 
    {
        this.GridHeight = new GridLength(200);
    }

    // Needs to be a property for data binding
    public GridLength GridHeight { get; set; }
}

---

绑定仅适用于属性而不适用于字段，并且仅在实现Inotifypropertychanged接口时更新

因此，无论何时更新GridHeight上的值，网格都会自动更新其值

public class Height:INotifyPropertyChanged
{
    GridLength _gridheight = new GridLength(200);
    public GridLength GridHeight
            {
                    get{
                            return _gridheight;
                       }

                    set{
                            if(_gridheight==value)
                               return;

                            _gridheight=value;
                            NotifyPropertyChanged("GridHeight")
                        }

         }

  public event PropertyChangedEventHandler PropertyChanged;

    private void NotifyPropertyChanged(string propertyName = "")
    {
        if (PropertyChanged != null)
        {
            PropertyChanged(this, new PropertyChangedEventArgs(propertyName));
        }
    }

}

---

非常感谢您提及InotifyProperty更改！

public class Height:INotifyPropertyChanged
{
    GridLength _gridheight = new GridLength(200);
    public GridLength GridHeight
            {
                    get{
                            return _gridheight;
                       }

                    set{
                            if(_gridheight==value)
                               return;

                            _gridheight=value;
                            NotifyPropertyChanged("GridHeight")
                        }

         }

  public event PropertyChangedEventHandler PropertyChanged;

    private void NotifyPropertyChanged(string propertyName = "")
    {
        if (PropertyChanged != null)
        {
            PropertyChanged(this, new PropertyChangedEventArgs(propertyName));
        }
    }

}