在我的 wpf mvvm 应用程序中,我编写了用于图像上传并保存到数据库的代码。 代码运行良好,图像保存到数据库。 这里我需要从数据库中检索图像并显示在图像框中。这是我的插入代码
public void Upload(object obj)
{
try
{
Microsoft.Win32.OpenFileDialog dlg = new Microsoft.Win32.OpenFileDialog();
dlg.DefaultExt = ".png";
dlg.Filter = "Image files (*.png;*.jpg)|*.png;*.jpg";
Nullable<bool> result = dlg.ShowDialog();
if (result == true)
{
string filename = dlg.FileName;
UploadText = filename;
FileStream FS = new FileStream(filename, FileMode.Open, FileAccess.Read);
byte[] img = new byte[FS.Length];
FS.Read(img, 0, Convert.ToInt32(FS.Length));
UploadLogo = img;
Stream reader = File.OpenRead(filename);
System.Drawing.Image photo = System.Drawing.Image.FromStream((Stream)reader);
MemoryStream finalStream = new MemoryStream();
photo.Save(finalStream, ImageFormat.Png);
// translate to image source
PngBitmapDecoder decoder = new PngBitmapDecoder(finalStream, BitmapCreateOptions.PreservePixelFormat,
BitmapCacheOption.Default);
ClientLogo = decoder.Frames[0]; ;
}
}
catch (Exception ex)
{
throw ex;
}
}
如何将此字节数据转换为图像
提前致谢
最佳答案
使用下面的代码
object binaryData = ("select ImageDataColunm from table where id=yourID");// use your code to retrive image from database and store it into 'object' data type
byte[] bytes = (byte[])binaryData;
string base64String = Convert.ToBase64String(bytes, 0, bytes.Length);
AspImageID.ImageUrl= "data:image/png;base64," + base64String;
编辑:,您可以 See the Solution here fro WPF
关于c# - 从sql数据库检索图像(字节数组)并显示图像,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/26758262/