如何读取imageStream for imageBrush [英] how to read memoryStream for imageBrush

问题描述

您好！如何将图像保存到MemoryStream并从memorystream调用到Imagebrush！

这是代码

Hello! How to save image to MemoryStream and calling from memorystream to Imagebrush!
this is code

bit = new byte[listPictures.Count];
 //bit = File.ReadAllBytes(listPictures[0]);
foreach (string tt in listPictures.ToArray())
                {
                   Uri resourceUri = new Uri(tt, UriKind.Relative);
                   StreamResourceInfo stream_info = Application.GetResourceStream(resourceUri);
//MemoryStream ms = new MemoryStream();
                    //stream_info.Stream.CopyTo(ms);
                    //ms.ToArray();
using (MemoryStream ms = new MemoryStream(bit))
                    {
                        ms.Write(bit, 0, bit.Length);
                                           
                        encoder.Frames.Add(BitmapFrame.Create(stream_info.Stream));
                        //temp = BitmapFrame.Create(ms);
                        //encoder.Save(ms);
                        bit = ms.ToArray();
                        ms.Close();
                    }

}

推荐答案

我想要将内存流转换为imagebrush

I guess to want to convert memory stream to imagebrush

using (var stream = new MemoryStream(data))
{
    var bitmap = new BitmapImage();
    bitmap.BeginInit();
    bitmap.StreamSource = stream;
    bitmap.CacheOption = BitmapCacheOption.OnLoad;
    bitmap.EndInit();
    bitmap.Freeze();
}

现在你可以将这个bitmapimage作为图像的来源。



BitmapCacheOption .OnLoad在这种情况下很重要，因为否则BitmapImage可能会在按需加载时尝试访问流，并且流可能已经关闭。



冻结位图是可选的但如果你确实冻结它，你可以在线程之间共享位图，否则是不可能的。



参考：http://stackoverflow.com/questions/5346727/convert-memory-stream-to-bitmapimage [ ^ ]



另请参阅此

https://social.msdn.microsoft.com/Forums/vstudio/en-US/8327dd31-2db1-4daa-a81c-aff60b63fee6/converting-an-imagebitmapimage-object-into-byte-array-and -vice-versa？forum = wpf [ ^ ]

这篇关于如何读取imageStream for imageBrush的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！