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Hi.
Im building a web chat application and im using async sockets in the server-side.
The client connects to the server socket via flash component.
My question is , when does the connection dies? if i close my browser i see that the server is closing the connection. is that because TCP socket sends data every x seconds to check the connection? and if it does , can i rely on it? or should i use UDP socket and try to handle the connection state myself.
Thank you.
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TCP uses an explicit RST (reset) message to close a connection. The connection can also die due to a timeout.
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Where is the timeout for the connection set?
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socket.ReceiveTimeout and SendTimeout
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TCP sockets are by definition reliable. UDP sockets on the other hand are not. As stated above, the browser is closing the connection explicitly.
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Is there a way to export a WinGrid with more than 256 columns to a single Excel sheet.
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They have Ultra-Win-Grid for that.
♫ 99 little bugs in the code,
99 bugs in the code
We fix a bug, compile it again
101 little bugs in the code ♫
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Is there anyway which we can convert the multi page tiff files into pdf format in C#? I googled for quite sometime. Majority of the code uses a third party s/w which will be licensed for commercial use.
Is there any free s/w that can be used in C# to convert the same? Or any open source tool for the same?
Thanks
Success is the good fortune that comes from aspiration, desperation, perspiration and inspiration.
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I would suggest using [ItextSharp].
This open source on itext (java) based library, will provide you with the possibility to create a new pdf based on whatever images you want.
Example to get you started
[Itext-convert-tiff-to-PDF]
Another thing you can use is ghostscript, but I think this can just be used from the commandline...
Kraeven
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Thank you for this.
One of my java developer friend has already examined this. Some of the files are able to convert, but some are end up with error message saying that 'Byte array not a valid JPEG file'.
One of our senior developer suggested that it may be because of JPEG-2000 issue, because of that some of the tiff files are not able to convert to PDF.
However, I am able to view all the tiff files without any issues using FastStone Image viewer,converting to PDF at one short. But this will be a licensed one for commercial purposes.
I want to know if there are any free versions or is it possible to achieve this somehow in dotnet.
Thanks in advance
meeram395.
Success is the good fortune that comes from aspiration, desperation, perspiration and inspiration.
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Hi!
How to open image without show picture box style e.g : background AND border 
Thanks
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Hello Everybody,
I have some problem while to pass the value of of Object.
DObject D = new DObject();
Dobject D1 = new DObject();
Private void ChageValues()
{
D = ComeFromFile();
D1 = D;
D1.Name = "Piter";
}
if i am try to change the property of D1 then D is also changing.
So How can i Sepreate to both of them.
If you can think then I Can.
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You can use ICloneable interface so that it will make only copy of the object.
Success is the good fortune that comes from aspiration, desperation, perspiration and inspiration.
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Try doing a deep copy or clone of D - Something like D1 = D.Clone().
The funniest thing about this particular signature is that by the time you realise it doesn't say anything it's too late to stop reading it.
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########## Please see the modified solution below ##########
Include this method in one of your class:
public static void CopyTo(object S, object T)
{
foreach (var pS in S.GetType().GetProperties())
{
foreach (var pT in T.GetType().GetProperties())
{
if (pT.Name != pS.Name) continue;
(pT.GetSetMethod()).Invoke(T, new object[] { pS.GetGetMethod().Invoke(S, null) });
}
};
}
I hope this is helpful 
♫ 99 little bugs in the code,
99 bugs in the code
We fix a bug, compile it again
101 little bugs in the code ♫
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Please don't.. 
As a last resort maybe, if you don't control the source of the type.
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Ok.
♫ 99 little bugs in the code,
99 bugs in the code
We fix a bug, compile it again
101 little bugs in the code ♫
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That's a code horror. You are calling GetProperties far too many times -- you probably only need to once.
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Thanks sir, will keep it in mind in future
♫ 99 little bugs in the code,
99 bugs in the code
We fix a bug, compile it again
101 little bugs in the code ♫
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To understand this behavior, you'll need to know the difference between a value type and a reference type.
Your 'DObject' is a reference type and hence assignment results in the variable pointing to the same object instead of a new object being created as in the case of a value type.
You'll need to implement IClonable interface and implement its Clone method, and then do something like this
D1 = D.Clone();
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In your example you don't need to initialize the objects.
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I propose another solution, seeing problems with my previous solutions, although working.
You can write your own
Clone() function inside your class. You need to mark your class as
[Serializable]
Function can be written as:
public object Clone()
{
object oClone;
using (MemoryStream myStream = new MemoryStream())
{
BinaryFormatter binFormatter = new BinaryFormatter();
binFormatter.Serialize(myStream, this);
myStream.Position = 0;
oClone = binFormatter.Deserialize(myStream);
}
return oClone;
}
You can call this function as
eg:
Person p2 = (Person)p1.Clone();
♫ 99 little bugs in the code,
99 bugs in the code
We fix a bug, compile it again
101 little bugs in the code ♫
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Hi, I think this is your answer here.
Use of MemberWiseClone method of System.Object.
Please refer below example, you will come to know how to pass value of object and if you change one then other will not change like any other value type.
class Program
{
static void Main(string[] args)
{
D1 d = new D1();
d.Prop1 = "Sample...";
D1 d2 = d.ShalloCopy();
d2.Prop1 = "Some else";
}
}
class D1
{
public string Prop1 { get; set; }
public D1 ShalloCopy()
{
return (D1)this.MemberwiseClone();
}
}
In above example, when you make change into d2 then d will remain same it will not change.
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