如何在wpf中设置Image.Source运行时. [英] How To Set Image.Source runtime in wpf.

问题描述

我在我的xaml页面页面中添加了一个图像控件，如下所示:

Hi ,

I have added one image control in my xaml page page as

<Image x:Name="imgQRCode" Grid.Column="0" HorizontalAlignment="Left" Height="439" Margin="10,51,0,0" VerticalAlignment="Top" Width="418" />

我想在运行时设置其图像路径.
为此，我正在尝试这种方式

and I want to set its image path at runtime.
For this I am trying this way

imgQRCode.Source = new BitmapImage(new Uri("D:\\sample.bmp"));

它没有给出任何错误；但是此示例图像也不会在运行时显示.

请提出我错了的地方或进一步指导.

预先感谢.

Its not giving any error;but This sample image also not displayed at runtime.

Please suggest where I am wrong or guide further.

Thanks in advance.

推荐答案

您的代码似乎还可以，尽管使用WPF，绑定仍可以正常使用.
那行代码根本没有被调用吗?
是在其他线程中调用的吗?在这种情况下，应使用类型为BitmapImage的局部变量，加载位图并Freeze()，然后设置属性.

Your code seems ok, though with WPF, binding is used normally.
Is that line of code called at all?
Is it called in a different thread? In that case, you should use a local variable of type BitmapImage, load the bitmap and Freeze() it, then set the property.

我认为这将是

i think this will be

imgQRCode.Source = new BitmapImage(new Uri("D://sample.bmp"));

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