C# resource.resx 图片资源读取问题
2021/9/15 9:35:01
本文主要是介绍C# resource.resx 图片资源读取问题,对大家解决编程问题具有一定的参考价值,需要的程序猿们随着小编来一起学习吧!
直接读取出来是Bitmap类型 xmal 中无法直接转换,我们需要编写一个转换器
using System; using System.Collections.Generic; using System.ComponentModel; using System.Drawing; using System.Globalization; using System.Linq; using System.Runtime.InteropServices; using System.Text; using System.Threading.Tasks; using System.Windows; using System.Windows.Data; using System.Windows.Interop; using System.Windows.Media.Imaging; namespace MyApp { class ResourceToSourceConverter : IValueConverter { [DllImport("gdi32.dll", SetLastError = true)] private static extern bool DeleteObject(IntPtr hObject); public object Convert(object value, Type targetType, object parameter, CultureInfo culture) { if (value == null) { return null; } Bitmap bitmap = (Bitmap)value; IntPtr hBitmap = bitmap.GetHbitmap(); BitmapSource bitmapSource = Imaging.CreateBitmapSourceFromHBitmap(hBitmap, IntPtr.Zero, Int32Rect.Empty, BitmapSizeOptions.FromEmptyOptions()); //DeleteObject 处理内存泄漏问题 return !DeleteObject(hBitmap) ? throw new Win32Exception() : bitmapSource; } public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture) { throw new NotImplementedException(); } } }
xaml 中使用
<Image Height="130"> <Image.Source> <Binding Source="{x:Static res:Resources.title}"> <Binding.Converter> <local:ResourceToSourceConverter /> </Binding.Converter> </Binding> </Image.Source> </Image> <Page.Background> <ImageBrush> <ImageBrush.ImageSource> <Binding Source="{x:Static res:Resources.bg}"> <Binding.Converter> <local:ResourceToSourceConverter /> </Binding.Converter> </Binding> </ImageBrush.ImageSource> </ImageBrush> </Page.Background>
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