C# 和 WPF 图像

Question

我正在尝试做一个简单的打开对话框并将图像 jpeg 文件添加到图像对象，我太接近了...我希望，但不确定我缺少什么，任何帮助将不胜感激，得到了 C# 代码和下面的wpf：

private void btn_Open_Click(object sender, RoutedEventArgs e)
{
     OpenFileDialog ofd = new OpenFileDialog();
     ofd.Filter = "Image jpeg(*.jpg)|*.jpg|Image png(*.png)|*.png";
     ofd.DefaultExt = ".jpeg";
     Nullable<bool> result = ofd.ShowDialog();

     Images i = new Images();

     // Process open file dialog box results 
     if (result == true)
     {
         // Open document 

         i.Imagepath = ofd.FileName;

         Cropped.Source = i;

     }  
}

它在 Crooped.Source = i 上显示错误，Cropped 是图像名称，我将更进一步，用户使用鼠标控制将裁剪图像。

下面是 wpf xaml：

<Border BorderBrush="Black" BorderThickness="1" HorizontalAlignment="Left" Height="291" Margin="26,10,0,0" VerticalAlignment="Top" Width="313">
    <Image x:Name="Cropped" Source="{Binding}" />
</Border>

Answer 1

private void btn_Open_Click(object sender, RoutedEventArgs e)
{
    var ofd = new OpenFileDialog();
    ofd.Filter = "Image jpeg(*.jpg)|*.jpg|Image png(*.png)|*.png";
    ofd.DefaultExt = ".jpeg";

    // Process open file dialog box results 
    if (ofd.ShowDialog() == true)
    {
        Cropped.Source = new BitmapImage(new Uri(ofd.FileName));
    }  
}

Answer 2

试试看：

if (result == true)
            {
                Cropped.Source = new BitmapImage(new Uri(ofd.FileName));
            }