如何获得随着数据绑定值更改而更新的图像？

由 发布于

I have a class cTailoredReading and a string property for an image. Right now, the below code works. When I create an instance of the class and set the datacontext, the image control updates and shows the specified image.

However, when I call DisplayedImageChange it isn't updating the image control.

任何建议/指示都将非常有帮助，因为我为此努力了几天。

cTailoredReading.cs：

class cTailoredReading
    {
        public cTailoredReading(string sTitle, string sFocus)
        {
            Title = sTitle;
            Focus = sFocus;

            Title_Image = @"C:\Users\local-paul\Pictures\Elly\3rd Birthday Photoshoot\BABY0363.JPG";
        }

        public void DisplayedImageChange()
        {
            Title_Image =  @"C:\Users\local-paul\Pictures\Elly\3rd Birthday Photoshoot\BABY0364.JPG"; 
        }

        public string Title_Image { get; set; }
    }

XAML：

<Image x:Name="ResourceMainImage" Source="{Binding Title_Image}" Width="80" Height="80"/>

更新

所以我尝试添加一个INotifyPropertyChanged事件，现在面对StackOverFlowException :(

cTailoredReading.cs的开头：

class cTailoredReading : INotifyPropertyChanged
    {
        public event PropertyChangedEventHandler PropertyChanged;

        // This method is called by the Set accessor of each property.
        // The CallerMemberName attribute that is applied to the optional propertyName
        // parameter causes the property name of the caller to be substituted as an argument.
        private void NotifyPropertyChanged([CallerMemberName] String propertyName = "")
        {
            if (PropertyChanged != null)
            {
                PropertyChanged(this, new PropertyChangedEventArgs(propertyName));
            }
        }

修改后的属性

public string Title_Image {
            get
            {
                //return @"C:\Users\local-paul\Pictures\Elly\3rd Birthday Photoshoot\BABY0364.JPG";
                return this.Title_Image;
            }
            set
            {
                if (value != this.Title_Image)
                {
                    this.Title_Image = value;
                    NotifyPropertyChanged();
                }

            }
        }