未处理COMException(转载) 未处理webexception

InAlphaImage.cs add this in the top of the file:
using System.Runtime.InteropServices;
And replace:
factory.CreateImageFromBuffer(pbBuf, cbBuf,BufferDisposalFlag.BufferDisposalFlagNone, outalphaImage._image);

With:
// Copy stream data into an unmanaged global buffer that will befreed by the factory once
// note that we cannot pass pbBuf directly since it might be movedaround or freed by the
IntPtr p =Marshal.AllocHGlobal((int)cbBuf);
Marshal.Copy(pbBuf, 0, p, (int)cbBuf);
factory.CreateImageFromBuffer(p, cbBuf,BufferDisposalFlag.BufferDisposalFlagGlobalFree, outalphaImage._image);