struct _packet
{
public pType header;
public byte[] data;
};
enum pType
{
AwaitingRequest = 0,
Transfer = 1,
FileName = 2,
FileSize = 3,
BeginTransfer = 4,
EndTransfer = 5,
ReadyToRecieve = 6
};
C# byte[] to struct packet
Author
I need to send a struct
Whoops, forgot I''m not on my other machine, so the login information wasn''t saved.
~Graham
----
while (your_engine >= my_engine)
my_engine++;
~Graham
----
while (your_engine >= my_engine)
my_engine++;
Author
I tried (byte[])pack; and (byte[])(object)pack; but on every cast I get Cast not valid.
quote:Original post by Anonymous Poster
You need to cast it:
(char *)&yourStructInstance
~Graham
C# is not C++.
Make a new byte array and put the values in manually.
P.S. Won''t you need to put the length of the data payload into the packet also?
Manually assigning values works, but another method is as follows:
[StructLayout(LayoutKind.Sequential, Pack=1)]
struct YourClass {
// Whatever
}
GCHandle handle = GCHandle.Alloc(test, GCHandleType.Pinned);
try {
t = (Test2)Marshal.PtrToStructure(handle.AddrOfPinnedObject(), typeof(Test2));
}
finally {
handle.Free();
}
There''s a number of ways to accomplish this if this doesn''t do it for you, try gooling it.
[StructLayout(LayoutKind.Sequential, Pack=1)]
struct YourClass {
// Whatever
}
GCHandle handle = GCHandle.Alloc(test, GCHandleType.Pinned);
try {
t = (Test2)Marshal.PtrToStructure(handle.AddrOfPinnedObject(), typeof(Test2));
}
finally {
handle.Free();
}
There''s a number of ways to accomplish this if this doesn''t do it for you, try gooling it.
Doh, wasn''t paying enough attention to the title. My apologies
~Graham
----
while (your_engine >= my_engine)
my_engine++;
~Graham
----
while (your_engine >= my_engine)
my_engine++;
Author
@antareus: no, since an int will take the first 2 bytes, all I have to do is take whats left of it... as for seeing how long it is, thats what .Length is for 
@cavemanbob: Thanks, I''ll try that out.
@cavemanbob: Thanks, I''ll try that out.
The only trouble with my method above is that you need to tell it how big the data bit is going to be. It''s probably just easier to make a constructor in the struct that takes the byte array and fills the header member and Array.Copy the rest of the data over.
You could also use MemoryStream and write to the byte[] array like a stream. That way you can use stuff like WriteInt32()... (or whatever size type you want to use to send your enum)
[edited by - joanusdmentia on April 4, 2004 6:07:23 AM]
[edited by - joanusdmentia on April 4, 2004 6:07:23 AM]
This topic is closed to new replies.
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