Data Reader Completion Rate, label text does not change - C# Discussion Boards

eAero24-Jun-09 6:10

24-Jun-09 6:10

Hi im new to c# and im building a program to telnet my server. Im trying to prevent the situation below

HostName> A command that will take a long time
The next command HostName>

Where the application sends the next command before the server has completed the last one .

Here is my code

public void Run(string cmd)
        {
            System.Threading.Thread.Sleep(300);
            string lastCharacter = Status.Substring(Status.Length - 2, 1);
            if (lastCharacter == ">")
            {
                WriteLine(cmd + "\n");
            }
            else
            {
                Run(cmd);
            }
        }

I want to get rid of the System.Threading.Thread.Sleep(); functions because they are a major source of exceptions in the program . Is there anyway to solve this problem without System.Threading.Thread.Sleep() and withut sucking up all the CPU time ?

Re: Better way to achive this ?

PIEBALDconsult24-Jun-09 6:42

PIEBALDconsult

24-Jun-09 6:42

I have a thread reading the responses and it doesn't signal the sending code until it sees the expected response.

This is done in a telnet scripting class I wrote, but which is not yet ready for distribution.

How to execute .jar file in c#

Gresziu24-Jun-09 6:04

Gresziu

24-Jun-09 6:04

Hi everybody, im trying to execute a .jar file in my c# program, i have try several times and get examples, but i can't do it.

I execute in the cmd, like this
java -Xms60m -Xmx256m -jar C:\\Programming\\Interface.jar";
and this open the program.

But, trying with the Process class:

Process process = new Process();
System.Diagnostics.ProcessStartInfo procInfo =
new System.Diagnostics.ProcessStartInfo("java -Xms60m -Xmx256m -jar C:\\Programming\\Interface.jar");

process = System.Diagnostics.Process.Start(procInfo);

and other instructions, i get an exception, the file can't be found.

Some one knows??
Thanks in advance.

Re: How to execute .jar file in c#

Ravadre24-Jun-09 7:56

Ravadre

24-Jun-09 7:56

If you would read the parameter's name, you would see that it's called fileName, therefore - there is no file name called "java -Xm......". Try

<br />
Process proc = Process.Start("java", "-Xms60m...."); <br />

Also, make you that java exec is in your env path, otherwise supply full path to it.

Re: How to execute .jar file in c#

Gresziu24-Jun-09 23:45

Gresziu

24-Jun-09 23:45

Thanks for the answer dude, but it's not working still, i dont get an exception, just a ms-dos window for a second.

Process proc = Process.Start("java",
"java -Xms60m -Xmx256m -jar C:\\Programming\\Interface.jar");
proc.EnableRaisingEvents = false;
proc.WaitForExit();

Have i write it correctly? I really don't understand why waitForExit is neither working..

Re: How to execute .jar file in c#

Gresziu25-Jun-09 0:33

Gresziu

25-Jun-09 0:33

FINALLY IS WORKING!!! Here is the code, thanks for ur time..

string path = "C:\\Programming";

Process process = new Process();
process.EnableRaisingEvents = false;

process.StartInfo.FileName = "java.exe";
process.StartInfo.Arguments = "-jar " + '"' + path+ "\\interface.jar";
process.Start();

Re: How to execute .jar file in c#

A P Prajwal30-Nov-09 0:56

A P Prajwal

30-Nov-09 0:56

Hi,

Use the following code to run .jar file from c#

private int ExecuteProcess(string cmd, string cmdParams, string workingDirectory, int timeout, out string stdOutput)
{
using (Process process = Process.Start(new ProcessStartInfo(cmd, cmdParams)))
{
process.StartInfo.WorkingDirectory = workingDirectory;
//process.StartInfo.WindowStyle = ProcessWindowStyle.Hidden;
process.StartInfo.CreateNoWindow = true;
process.StartInfo.UseShellExecute = false;
process.StartInfo.RedirectStandardInput = true;
process.StartInfo.RedirectStandardOutput = true;
process.StartInfo.RedirectStandardError = true;
process.Start();
stdOutput = process.StandardOutput.ReadToEnd();
process.WaitForExit(timeout);
return process.ExitCode;
}
}

string stdOutput;
string parameters = "Prajwal";
int exitCode = ExecuteProcess(@"C:\Program Files\Java\jre1.6.0\bin\Java.exe", " -jar samplejarfilename.jar " + parameters
,path, 5000, out stdOutput );

Data Reader Completion Rate, label text does not change

Ersan Ercek24-Jun-09 5:32

Ersan Ercek

24-Jun-09 5:32

Dear All,

I have 2 problems with the software I am devoloping.

1. Through data reader it gets data from As400 and inserts it into a local database. I have label that is supposed to notify regarding the status of the process. But its text does not change at all untill data is inserted into local access file. There are several commands to change the text between.
2. Do you have any idea how to get the completion rate of the inserting process?

Thanks in advance

Re: Data Reader Completion Rate, label text does not change

Manas Bhardwaj24-Jun-09 5:38

Manas Bhardwaj

24-Jun-09 5:38

Ersan Ercek wrote:
There are several commands to change the text between

Are you changing th text using a seperate thread?

Ersan Ercek wrote:
Do you have any idea how to get the completion rate of the inserting process?

Well, there is nothing as such which can tell you the exact rate of completion, but you may simulate it taking the average of some attempts.

Manas Bhardwaj
Please remember to rate helpful or unhelpful answers, it lets us and people reading the forums know if our answers are any good.

Re: Data Reader Completion Rate, label text does not change

Ersan Ercek24-Jun-09 5:49

Ersan Ercek

24-Jun-09 5:49

Are you changing the text using a seperate thread?

I did not understand what you mean excatly but here are sample codes.

con.ConnectionString = "Driver={Client Access ODBC Driver (32-bit)};System=xxxx;Uid=xxxxx;Pwd=xxxxxxx";
try
{
con.Open();
cmd = new OdbcCommand();
cmd.Connection = con;
cmd.CommandType = CommandType.Text;

lblStatus.Text = "Starting Select Process";

cmd.CommandText = "Select Article, Store, Month, Year, Day, SUM(UD) AS UNIT, " +
"SUM(Value) AS VALUE from Data" +
" Where Year="+txtYil.Text+" AND Month= "+txtAy.Text+" AND Day BETWEEN "+
txtBaslangic.Text+" AND "+txtBitis.Text+
"GROUP BY Article, Store, Month, Year, Day";

cmd.CommandTimeout = 0;

lblStatus.Text = "Data is being selected";

dr = cmd.ExecuteReader();
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}

lblStatus.Text = "Data is being inserted to Access";

oleCon = u.oleCon("NXAC"+txtYil.Text+txtAy.Text+".mdb");
oleCon.Open();

while (dr.Read())
{
if (olecmd != null)
{
olecmd.Dispose();
}
olecmd = new OleDbCommand();
olecmd.Connection = oleCon;
olecmd.CommandType = CommandType.Text;

Re: Data Reader Completion Rate, label text does not change

musefan24-Jun-09 6:02

musefan

24-Jun-09 6:02

try calling...

this.Refresh();

after each text update, this is a quick fix.

I would suggest you look into the BackgroundWorker component for a better solution

Life goes very fast. Tomorrow, today is already yesterday.

Re: Data Reader Completion Rate, label text does not change

Ersan Ercek24-Jun-09 21:38

Ersan Ercek

24-Jun-09 21:38

I went for Background worker, it is a great solution.

Thanks alot.

Send Email in Arabic

ASysSolvers24-Jun-09 5:14

ASysSolvers

24-Jun-09 5:14

I want to send Email in Arabic ;

I have used genaral SmtpMail class to send email,.. but when i send Arabic text email it shows like '?????????' for the all text;

i did objMsg.BodyFormat = MailFormat.Html; also but no Luck.

There are many ActiveX,.Component available,..
But i want to know in using .Net class same SMTP;

If any body know plz tell me;
Your corperation is appreciated!

B/rgs
Anushka

Re: Send Email in Arabic

Manas Bhardwaj24-Jun-09 5:21

Manas Bhardwaj

24-Jun-09 5:21

try using

mailMessage.BodyEncoding = Encoding.Unicode;

Manas Bhardwaj
Please remember to rate helpful or unhelpful answers, it lets us and people reading the forums know if our answers are any good.

Re: Send Email in Arabic

Gary Stafford24-Jun-09 5:56

Gary Stafford

24-Jun-09 5:56

I've used

theMessage.BodyEncoding = Encoding.UTF8;<br />

Is using Encoding.Unicode better for Arabic than Encoding.UTF8?

Regards,

Gary

When adding a webreference to my C# Windows Application i get:Operation is not valid due to the current state of the object.

DotNetCoderJunior24-Jun-09 5:03

DotNetCoderJunior

24-Jun-09 5:03

Hi
I'm trying to add a web reference to my windows app, but .net is not allowing this, i'm getting the following error Operation is not valid due to the current state of the object., i understand that this has to do with proxy, how do i solve his problem, my browser opens the web service without a problem

thanx in advance

Re: When adding a webreference to my C# Windows Application i get:Operation is not valid due to the current state of the object.

Manas Bhardwaj24-Jun-09 5:07

Manas Bhardwaj

24-Jun-09 5:07

try this in your application's web config/ app config and add the following under the <configuration> element:

<system.net> 
<defaultProxy>

<proxy usesystemdefault="True" proxyaddress=http://someproxy:someport bypassonlocal="True"/> 
</defaultProxy>

</system.net>

Manas Bhardwaj
Please remember to rate helpful or unhelpful answers, it lets us and people reading the forums know if our answers are any good.

Re: When adding a webreference to my C# Windows Application i get:Operation is not valid due to the current state of the object.

DotNetCoderJunior24-Jun-09 21:23

DotNetCoderJunior

24-Jun-09 21:23

i tried that it doesn't seem to be working.

GridView: row focus on mouse right click before ContextMenu pops up.

Raybarg24-Jun-09 4:03

Raybarg

24-Jun-09 4:03

Google and I were not friends today, so I ask you guys here!

This project has GridView control and MenuStrip which is set in grid's ContextMenuStrip to pop up when user is pressing right mouse button over the grid.

When user is pressing right mouse button over GridView the current row is not automatically set to the row "under" mouse pointer.

How is it possible to change current row (focus on) to the row under mouse pointer at that point before toolstrip menu is shown?

Re: GridView: row focus on mouse right click before ContextMenu pops up.

led mike24-Jun-09 4:42

led mike

24-Jun-09 4:42

Raybarg wrote:
How is it possible to change current row (focus on) to the row under mouse pointer at that point before toolstrip menu is shown?

It may not be. Without looking at the Grid documentation I would guess, like other controls, you can determine the row based on the mouse pointer coordinates.

Keep in mind this is a complete guess on my part and if I am wrong someone else will likely reply to you with the correct solution.

Re: GridView: row focus on mouse right click before ContextMenu pops up.

Ennis Ray Lynch, Jr.24-Jun-09 4:55

Ennis Ray Lynch, Jr.

24-Jun-09 4:55

In the cell mouse down event open your context menu rather than using the built in context menu property.

Need custom software developed? I do C# development and consulting all over the United States.

A man said to the universe:
"Sir I exist!"
"However," replied the universe,
"The fact has not created in me
A sense of obligation."
--Stephen Crane

Re: GridView: row focus on mouse right click before ContextMenu pops up.

Manas Bhardwaj24-Jun-09 4:59

Manas Bhardwaj

24-Jun-09 4:59

The row is selected on the left mouse down.
while in your case, you do a right mouse click to show the menu strip.
You can instead fake this in the OnCellMouseClickEvent

if (e.Button == MouseButtons.Right)
{
	if(this.datagridview1.SelectedRows.Count > 0)
	    this.datagridview1.SelectedRows[0].Selected = false;
	this.datagridview1.Rows[e.RowIndex].Selected = true;
}

Manas Bhardwaj
Please remember to rate helpful or unhelpful answers, it lets us and people reading the forums know if our answers are any good.

Re: GridView: row focus on mouse right click before ContextMenu pops up.

Raybarg24-Jun-09 21:08

Raybarg

24-Jun-09 21:08

Yes, that works with the solution Ennis suggested to pop the menu after doing that.

And here is how I got the menu positioned correctly:

Point pt = MyGrid.PointToClient(Control.MousePosition);
MyMenuStrip.Show(MyGrid, pt.X, pt.Y);

Thank you all for helping in this simple matter.

Re: GridView: row focus on mouse right click before ContextMenu pops up.

Raybarg30-Jun-09 0:05

Raybarg

30-Jun-09 0:05

Hi again!

Since I had CurrencyManager in BindingContext, your suggested solution resulted in CurrencyManager position not changing when user right-clicked the grid so I had to google again, this time with more words in the issue to succeed.

Here's the solution:
Using DataGridViewCellMouseEventArgs e I can change current row by setting CurrentCell property:

this.datagridview1.CurrentCell = this.datagridview1[e.ColumnIndex, e.RowIndex];

And I repaste the code submitted in other post which pops the context menu also:

Point pt = datagridview1.PointToClient(Control.MousePosition);
menustrip1.Show(datagridview1, pt.X, pt.Y);

Thanks for your help again, the grid is working exactly like I want it to now!

Multi-threaded TCP Server Problem

kordel22224-Jun-09 3:35

kordel222

24-Jun-09 3:35

hi. I coded a multi threaded TCP Server (using .net 2.0)
and also I coded a client side program.Client side programs are executing on Mobile Devices
When the client number is six or seven a serious problem occurs , The problem is even if a mobile device send a message to server properly (Socket.Send is succesful and then start waiting for the response ) but often the response message does not arrive to client side.I think this is so weird
Is there a concurrent use of server side network i/o or something and needed to thread synchronization
to send data to clients or this is all about wireless network performance

Use Ctrl+Left/Right to switch messages, Ctrl+Up/Down to switch threads, Ctrl+Shift+Left/Right to switch pages.