我有这个:
byte[] ar = new byte[ArrayAnsammlung[DurchLaeufer].Length];
ArrayAnsammlung[DurchLaeufer].CopyTo(ar, 0);
TypeConverter tc = TypeDescriptor.GetConverter(typeof(Bitmap));
try
{
bild = (Bitmap)tc.ConvertFrom(ar);
}
catch (Exception ddd)
{
Console.WriteLine(ddd.ToString());
}
ar 包含位图数据,即 Blue-Green-Red-Alpha-Blue...
我正在尝试将其转换为位图图片。这是控制台显示的内容:
A first chance exception of type 'System.ArgumentException' occurred in System.Drawing.dll
System.ArgumentException: Invalid Parameter.
at System.Drawing.Image.FromStream(Stream stream, Boolean useEmbeddedColorManagement, Boolean validateImageData)
at System.Drawing.ImageConverter.ConvertFrom(ITypeDescriptorContext context, CultureInfo culture, Object value)
at System.ComponentModel.TypeConverter.ConvertFrom(Object value)
at SK.MainWindow.thread() in MainWindow.xaml.cs:Zeile 523.
如何解决这个问题?
试试这个:
public static Bitmap BytesToBitmap(byte[] byteArray)
{
using (MemoryStream ms = new MemoryStream(byteArray))
{
Bitmap img = (Bitmap)Image.FromStream(ms);
return img;
}
}
我不确定为什么
TypeConverter
不起作用,但您可以使用 Bitmap
类的 Stream 构造函数轻松实现此目的:
var memoryStream = new MemoryStream(ar)
var bild = new Bitmap(memoryStream);
请注意,根据 MSDN,
memoryStream
必须在对象的生命周期内保持活动状态。