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C# 如何使用C正确地将图像源链接绑定到wpf xaml#_C#_Wpf_Xaml - Fatal编程技术网

C# 如何使用C正确地将图像源链接绑定到wpf xaml#

C# 如何使用C正确地将图像源链接绑定到wpf xaml#,c#,wpf,xaml,C#,Wpf,Xaml,在ViewModel中定义公共属性 Source="{Binding Path, Converter={StaticResource MyPathConverter}}" private void MyPathConverter() { try { string Path = @"http://qa-ads.transim.com/www/delivery/avw.php?zoneid=9&cb=131441234131313&n=

在ViewModel中定义公共属性

Source="{Binding Path, Converter={StaticResource MyPathConverter}}"
private void MyPathConverter()
{
    try
    {
        string Path = @"http://qa-ads.transim.com/www/delivery/avw.php?zoneid=9&cb=131441234131313&n=a25d26ed";
        Image image = new Image();
        image.UriSource = new Uri(Path);
    }
    catch (Exception ex) { /*Ignoe Function*/ }
}
请看这里

Xaml:

public class YourViewModel : INotifyPropertyChanged
{
    public event PropertyChangedEventHandler PropertyChanged;

    protected void RaisePropertyChanged(string propertyName)
    {
        PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(propertyName));
    }

    private string imageSource;

    public string ImageSource
    {
        get { return imageSource; }
        set
        {
            imageSource = value;
            RaisePropertyChanged(nameof(ImageSource));
        }
    }
}
<Image Source="{Binding Path=ImageSource}"/>
注意:别忘了为viewModel设置DataContext

ImageSource = "http://qa-ads.transim.com/www/images/c94efa71e756c4920ac93560f9ce8520.jpg";

可能重复的?您能告诉我如何使用链接在xaml和C#中绑定图像的正确方法吗?请注意,设置
UpdateSourceTrigger=PropertyChanged
在单向绑定中无效。我已经删除了它。只是写UpdateSourceTrigger的坏习惯谢谢你的编辑:)先生这是干什么的-->这个。DataContext=new yourViewModel()?DataContext是视图查找数据的地方。请参阅此处以增加一点精度,UI元素的DataContext属性提供未明确指定源的任何绑定的源对象(通过设置source、RelativeSource或ElementName)。因此,当您编写
{Binding Path=ImageSource}
时,框架希望有一个对象具有分配给当前DataContext的ImageSource属性。此外,DataContext属性值被继承到可视化树中的子元素。因此,当您设置主窗口的DataContext时,该值将自动对Image元素可用。
ImageSource = "http://qa-ads.transim.com/www/images/c94efa71e756c4920ac93560f9ce8520.jpg";
this.DataContext = new YourViewModel()