如何使用 C# 更改 image.source？
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How can I change image.source with C#?
提问by thefriend
I'm developing a Windows Phone app.I have an image . This is its XAML code:
我正在开发 Windows Phone 应用程序。我有一个图像。这是它的 XAML 代码：
<Image x:Name="imageclock" Grid.Row="1"
Source="Image/Myimage.png" Height="240" Width="240"
/>
And i want change image.source with this code:
我想用以下代码更改 image.source：
private void ClickonBtn(object sender, EventArgs e)
{
BitmapImage bm = new BitmapImage(new Uri("Image/Darktheme.png", UriKind.RelativeOrAbsolute));
imageclock.Source = bm;
}
But when i complied, imageclock.Source=Null and this is error:
但是当我遵守时， imageclock.Source=Null 这是错误：
An exception of type 'System.NullReferenceException' occurred in Newappver1.DLL but was not handled in user code
Newappver1.DLL 中出现“System.NullReferenceException”类型的异常，但未在用户代码中处理
采纳答案by 3wic
Your code looks ok but maybe you need to add @before the image path to handle the /in the code behind like this :
您的代码看起来不错，但也许您需要@在图像路径之前添加以处理/后面的代码，如下所示：
BitmapImage bm = new BitmapImage(new Uri(@"Image/Darktheme.png", UriKind.RelativeOrAbsolute));
回答by Tiago S
imageclock.Source = new BitmapImage(new Uri("ms-appx:///Image/Darktheme.png"));
source https://msdn.microsoft.com/library/windows/apps/windows.ui.xaml.controls.image.source.aspx
源https://msdn.microsoft.com/library/windows/apps/windows.ui.xaml.controls.image.source.aspx
