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Hi, I used one excellent article from Code Project to build a TCP server in C# (.Net 2.0) with System.Net.Sockets and it's working great. I only have a minor issue:
The server is reasonably fast to provide answers, the round trip is usually less than 50ms. But some clients split their requests in 2 packets and the server has to wait for the last packet before it can provide an answer. In those situations the round trip time becomes close to 200ms because the server ACK to the first packet is delayed around 150ms. The only way I've found to go around this is to let the server reply to the first packet with a single space character: the client ignores it and the delay is minimal when the server has something to reply.
I tried to set NoDelay = true on the socket but it has no effect on this problem. Are there any other options I am missing?
Thanks!
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How do you separate a string into two strings?
string s = "hello:you";
sting left;
string right;
for example the string above should return:
left = "hello";
right = "you";
Please note that the left and right strings of the separator i.e. : can vary
Thanks
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string[] stringarray = s.Split(':');
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i want to Open Folder Option,My Network Places, Map Network Drive, Disconnect Network Drive, Search Files and Folder.
i use following code :
System.Diagnostics.Process.Start("explorer.exe", "My Network Place");
but not Works?
Sanjit.rajbanshi@wlinktech.com
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hey...
I am working on an application that used the complete form for drawing(using openGL) but the problem is that after I add menus to my application the menus are not displayed at run-time....
kindly tell how to solve this problem??
someone also suggeted to use of panel how to setup panel for drawing in C#?/
thanks
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You probably would find it easier to use DirectX. If you must use OpenGL, then I'd use C++, you're not going to be doing much directly in C#, I would expect.
Christian Graus - Microsoft MVP - C++
Metal Musings - Rex and my new metal blog
"I am working on a project that will convert a FORTRAN code to corresponding C++ code.I am not aware of FORTRAN syntax" ( spotted in the C++/CLI forum )
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If your using forms to display then the OGL takes over all drawing so you cant use the default drawing UI components.
You'll have to create your own GUI components in OGL - i've done this in DirectX, and there are some good tutorials out there (CUnit for Directx is a good overview)
Its been a long time since i used OGL, but to write to the panel instead of a form i think its just passing the Win32 draw parameter fo the panel instead of the form when you start OGL (it really was a long time ago)
HTH
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Hi All,
i am new to this forum...
i am developing a simple Voice\Video Chat application in C# using TcpListener and TcpClient classes...
Evrything works fine(Control Message passing and communication) but when any of the client disconnects,
CPU usage on the machine which runs the server reaches to 99%...which never falls after taht..
and server application crashes after some time...
Anybody faced similar problem here...
i am closing client and streams after use.....but of no use...
i am unable to figure out the problem area....
please guied....
waiting for reply...
atul hirve
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atulah wrote: but when any of the client disconnects,
CPU usage on the machine which runs the server reaches to 99%...which never falls after taht..
and server application crashes after some time...
It seems that the thread which is assigned for the particular client is still running on the server machine and trying to get communicated with the client,. This is making the processor utilization high. One solution could be sending one quit message to server when client is going to close. When server gets the message, release the threads and all other resources allocated for this client. I think this will solve problem.
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thanks man....
i will try it..and let u know what happens....
atul hirve
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-I have made an application in c#.net,window application.
-Now to install it on other computers, i want to make its setup.
-I have already made setup of the application using d below link :
http://www.codersource.net/csharp_installer_projects.html[^]
- I have made my database in sqlserver2000,
-I have copied its 2 (database file and log file) from its actual path (C:\Program Files\Microsoft SQL Server\MSSQL\Data) and pasted it in my dotnet application folder.
-While making setup of application i just included those 2 database files with the application(from >bin>debug) of project (as instructed in above link)
Setup is build without errors, but when i run i get errors,they r related to sqlserver.
-Do i need to make database setup separately?How?
I would be grateful,if any help is offered.
Thank you.
Regards nekshan.
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the only error facing by all users is of .net framework. if the target machine doesn't have .net framework then not able to run setup. check this is facing error.
or
my friend is on lunch once he came then i ask him & then replay u the exact error which u faced.
bye.
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I created setup(as instructed in that link) just included 1 application of my proj(from >bin>debug)and my 2 sqlserver (database files) in the application setup(as instructed in that given link).
(In that link they used access,i have used sqlserver.)
It is build successfully, but
M getting this error after running the created setup (application):
System.InvalidOperationException: The ConnectionString property has not been initialized.
at System.Data.SqlClient.SqlConnection.PermissionDemand()
at System.Data.SqlClient.SqlConnectionFactory.PermissionDemand(DbConnection outerConnection)
at System.Data.ProviderBase.DbConnectionClosed.OpenConnection(DbConnection outerConnection, DbConnectionFactory connectionFactory)
at System.Data.SqlClient.SqlConnection.Open()
at WindowsApplication1.login.login1_Click(Object sender, EventArgs e)
at System.Windows.Forms.Control.OnClick(EventArgs e)
at System.Windows.Forms.Button.OnClick(EventArgs e)
at System.Windows.Forms.Button.PerformClick()
at System.Windows.Forms.Form.ProcessDialogKey(Keys keyData)
at System.Windows.Forms.Control.ProcessDialogKey(Keys keyData)
at System.Windows.Forms.TextBoxBase.ProcessDialogKey(Keys keyData)
at System.Windows.Forms.Control.PreProcessMessage(Message& msg)
at System.Windows.Forms.Control.PreProcessControlMessageInternal(Control target, Message& msg)
at System.Windows.Forms.Application.ThreadContext.PreTranslateMessage(MSG& msg)
plz chk n tell
thanks.
wen r u coming??
tc cu soon.
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You said you're using SQL Server, and copied the database files on the client machine, but is SQL Server actually installed on that machine? If not, you're out of luck.
You will either have to install SQL Server on the machine where you install the database files, or you will have to go for some other data source, like MS Access.
Cheers,
Vikram.
"But nowadays, it means nothing. Features are never frozen, development keeps happening, bugs never get fixed, and documentation is something you might find on wikipedia."
- Marc Clifton on betas. Join the CP group at NationStates. Password: byalmightybob
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Yes, SQL Server is installed on that machine.
Even if i run that setup on my own pc(which has sqlserver), it is giving this error 
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I've read the article that tells u how to make a setup... and the database it was talking abt was a MS Access Database which they copied in the application folder but in case of MSSQL, I think this will not suffice coz you need to restore that Database in the SQL Server on the end user machine. or whatever ur network configurations are. So just install the application on the end user and restore the Database on the End user machine so that it can work properly.
hope it helps
Rocky
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does anyone know how to query an excel file then writing the results of the query into a new excel file?
is this possible?
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I am developing a small program for Window Mobile 5. I wonder how I can reload the parent window after closing a child window. I have a variable that needs to be refreshed in the parent window. (its a configuration variable that needs to be updated)
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Hi All,
I am new to this forum....
I am working on simple Voice\Video Chat Application.
i have implemented it using TcpListener and TcpClient classes in C#.
Everything works fine(control message passing and communication) but
when any of the client disconnects, the CPU usage on the machine where server
runs reaches to 99%. which never comes down...
Anybody faced similar problem here? is there any problem with
TcpListner,Client or streams?
I have tried closing them after use...but of no use....
Please Guid....
Waiting for reply....
atul hirve
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Hi every one,
I just started to make an MDI aplication in C# and I was tryin to split the MDI parent window showing a treeView to manage a few links. and I was trying to open a new form when we click on a tree Node so I coded some thing like this in the after select Event
void treeView1_AfterSelect()...<br />
{<br />
myForm1 f = new myForm1();<br />
f.Show();<br />
}
but the prblem is that the new window doesnt show up. So what should I do here??
thanks in advance
Rocky
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make a break point and
be sure that it enter this handler in debug mode
if it does not enter this handler then try to code another handler to the treeview control in order to display the form
also make form.MDIParent= this ; this mean the parent window
Amr Abdel-Mohsen Hafez
Software engineer
Cairo
E g y p t
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I coded somethin like this and its definately goin in that event handler
void tV1_NodeMouseClick()..
{
if(e.Node.Name == "Node0")
{
Form1 m = new Form1();
m.MdiParent = this;
m.Text = "Trial";
m.Show();
}
}
It works if I remove the splitcontainer from the MDI parent form but it doesnt show up at all when I have this splitContainer on. What I was tryint to do is to show the new window in the other half of the screen while keeping the treeView on the leftside of the screen
if there's an alternative in ur mind on how to appcomlish this idea
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make the panel2 of the split container collapsed
panel2Collapsed=true from the properties window
and resize the panel1 as you want..
then try your code , it will work well..
Myform frm=new Myform();
frm.MDIParent=this;
frm.show();
and good luck to complete ur project
Amr Abdel-Mohsen Hafez
Software engineer
Cairo
E g y p t
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