Re: C sharp file creation at specified time. - C# Discussion Boards

Hi everybody,

I am new to c# and have a question that is rather related to wireshark or how to capture messages in plain text sent over the network.

I created a socket server and a tcpclient in c#. I am sending a message like "Here I am" over tcp using the client. The Server answers with a simple string like "Hello". I do this on a local ip address and port 7.

I see the messages in the command line (console), but Wireshark does not show me the text. I am filtering ip.adress source and ip.address dest, but the capture window is empty.

I appreciate any help.

Cheers

Lillepige

This question has more to do with Wireshark than C#. I suggest you go to their website to see how to use it.

The difficult we do right away...
...the impossible takes slightly longer.

What does this have to do with C#?

Chances are you didn't capture on the correct interface.

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Dave Kreskowiak

Install Fiddler.

Bastard Programmer from Hell Suspicious | :suss:

If you can't read my code, try converting it here[^]

If the two apps are both on the same PC it probably is not routed via you NIC (going via 127.0.0.1 which wireshark cannot monitor)- so you cannot see it

Ta

Hi, I want to create a text file in C sharp at the specified time in a day for e.g., 00:30 am. Pl help.

What have you tried so far ? Show us some code.

Is your application guaranteed to be running at that time every day ?

« There is only one difference between a madman and me. The madman thinks he is sane. I know I am mad. » Salvador Dali

Hi, I have been following the below logic in C#
1- Text file is written at a source location continuously with fixed file name and destination.
2- Source needs to replicated at specified interval say 3 mins or more. Reason in case of loss of source file data is not lost as its written at destination path. i.e., replicated.
3- During EOD source file will be moved to backup folder and needs to be created at specified time. Such file backup needs to be retain as per number of files or a days.
4- File at destination should be with the naming convention such as file_YYYYMMDD.
5- Program should be running as service in client machine which needs to be auto start mode.

To start with i have been facing issue in below code for file creation. I have still not created main method.

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading;
using System.Security.Permissions;
using System.IO;
using System.Configuration;
using System.Security.AccessControl;

namespace SyncFile
{
class Create
{

public void Sync (string spath, string dpath, string sbpath, string dbpath)
{
String source = ConfigurationManager.AppSettings["spath"];
String target = ConfigurationManager.AppSettings["dpath"];
String bsource = ConfigurationManager.AppSettings["sbpath"];
String btarget = ConfigurationManager.AppSettings["dbpath"];
FileSystemWatcher fsw = new FileSystemWatcher();
fsw.NotifyFilter = NotifyFilters.LastAccess | NotifyFilters.LastWrite | NotifyFilters.FileName | NotifyFilters.DirectoryName;
fsw.Created += new FileSystemEventHandler(FileCreated);
fsw.EnableRaisingEvents = true;
}

public void FileCreated(Object source, FileSystemEventArgs e)
{
FileSecurity fs = new FileSecurity();
fs.AddAccessRule(new FileSystemAccessRule("spath", FileSystemRights.ReadData, AccessControlType.Allow));
if (!File.Exists("dpath"))
{
//File.SetCreationTime("dpath",(00,01,00));

DateTime fileTime = DateTime.Now;
//File.SetCreationTime("dpath", new DateTime(2014, 4, 3));
File.CreateText("dpath" + "File_"+ DateTime.Now.ToString("ddMMYYYY"));
}
else
{
// Take an action that will affect the write time.
File.SetLastWriteTime("dpath", new DateTime(1985,4,3));
Thread.Sleep (30000);
}
}
}
}

This is a significant change from your original specific question to many general questions.

kanswal77 wrote:
To start with i have been facing issue in below code for file creation

What issue: where in the code does the issue occur. What error message do you see ?

« There is only one difference between a madman and me. The madman thinks he is sane. I know I am mad. » Salvador Dali

NO error while debugging but code is not executing as per logic. How can we define file creation in code at the specific time in a day, say at 00:30 am.

I don't think we'll make progress here until you really tell us what you are doing now, and answer questions people have already asked you, like my question: "Is your application guaranteed to be running at that time every day ?"

At issue here is whether you have have created an application, or a service, that's "always on," or, whether you have run an application that sets up a Windows Task that will execute at the correct intervals. And, what happens if the computer is put to sleep/hibernate, or automatically goes into sleep mode ?

And, what about Nicholas Marty's suggestion to use a batch file ?

CodeProject is your friend: take a look at: "How to create a task in Windows Task Scheduler" [^]

« There is only one difference between a madman and me. The madman thinks he is sane. I know I am mad. » Salvador Dali

The program is at initial stage. What i am looking is the method of file creation at specific time in c sharp, not using batch file or task scheduler as the program would be running at client PC. Would thankful if some one can share the logic to build the same in code.

There are many ways (and for some you wouldn't even have to use a c# program)

Solution 1
No need for C#. Create a batch file that you run daily at that specified time using the Task Scheduler. (Windows 7 explanation[^], but something like that exists in basically every OS)
Requirements: The OS has to be running during that time.

Batch-File :

BAT

copy /y NUL YourFileName.txt > NUL

Or just write some text into the file. It doesn't actually matter what you write inside your batch script. The Task Scheduler will just execute it.

Solution 2
Again, use the Task Scheduler. Just write your application in c# that outputs something to your text file.
Requirements: The OS has to be running during that time.

Solution 3
Write an Application that is always running. Implement a Timer that periodically checks what time it is. You'll probably need to check if you have already written the file for that day and reset it when you're rolling over to the next day.
Requirements: The OS and your application have to be running during that time.

There are probably many other possibilities depending on what exactly you're trying to do.

Without any information about what you're trying to do, it's basically impossible to recommend you anything. You may get a few ideas from this or you could provide some further details.

Thanks Nicholas for the possible way of achieving. What i am looking is to create a c# program which would be running at client PC and would be replicating the source file with destination. Currently the program is not completed and is looking for the sample logic where file would be created at destination folder at specific time say 00:30 am every day. If you refer the code, i am trying to use file system watcher for the replication. How to use below in file creation at the specified time.
File.SetCreationTime("dpath", new DateTime(2014, 4, 3));

How to define time in DateTime(2014, 4, 3) function. What would be the logic code ?

OK, so what's the problem?

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Dave Kreskowiak

Im currently stuck on a part of my assignment that i can't seem to figure out. It involves me setting up a game board, using a tablelayoutpanel as the gameboard.

So far, I have displayed the tile "Squares" on the board, but the tiles (cells) are not in order as so:

http://i.stack.imgur.com/vHYz7.png [1]

I need the start tile to be displayed in the bottom left, and the finish to be in the top right, with the cells in the middle in order as so:

http://i.stack.imgur.com/dcdy8.png [2]

The methods which pertain to this part are these:

C#

/////This method sets up the game board using and array of "Squares", (still a work in progress, but mostly done)

private void SetupGameBoard() {

                    for (int i = 0; i <= 41; i++) {

            SquareControl squareCreate = new SquareControl(Board.Squares[i], null);

            int coloumn = 0;
            int row = 0;

            MapSquareNumToScreenRowAndColumn(i, out coloumn, out row);

            boardTableLayoutPanel.Controls.Add(squareCreate, coloumn, row);

        }


    }// SetupGameBaord

And this,

C#

private static void MapSquareNumToScreenRowAndColumn(int squareNumber, out int rowNumber, out int columnNumber) {



           // ######################## Add more code to this method and replace the next two lines by something more sensible.  ###############################
           rowNumber = 0;      // Use 0 to make the compiler happy for now.
           columnNumber = 0;   // Use 0 to make the compiler happy for now.



       }//end MapSquareNumToScreenRowAndColumn

What I've grasped so far is that in MapSquareToScreenRowandcColumn is where my calculation of figuring out where the squares fall into place needs to happen.

Would really love some tips/advice/help/anything on this.

If you guys need more info, let me know.

Thanks!

EDIT:

So I've figured out sort of how to do, just wondering about a better way to do it. In MapSqauretoScreenRowandColumn I put this little if statement just to test:

<pre lang="c#">

if (squareNumber >= 0 && squareNumber <= 5) {

rowNumber = 6;

}

So if the sqaurenumber is more than 0 and less than 5, its placed in the right row. My question is, is there a better way to do this for the rest? instead of writing a bunch of lines for this, is there are way to do it in a few?

EDIT2: Also, just a note, the top left of the board is (0,0) and the bottom right is (6,5)

Why do you not make it simpler and have a loop that goes through the rows, with an inner loop that goes through the columns. Something like:

C#

for (int row = 0; row < MAXROWS; ++row)
{
    for (int column = 0; column < MAXCOLUMNS; ++column)
    {
        // square[row][column] is the logical location of each square in the board.
        // You can calculate screen position by multiplying each index by the
        // appropriate number of pixels in the side of a square
    }
}

Thanks for the reply. This is an exercise for my firt Uni c# programming class, so I'm fairly new to this.

Could you elaborate the comment section some more please?

I don't think I'm meant to calculate the number of pixels and such, since these squares are being placed inside tabellayoutpanel cells.

thanks again for the reply

You are correct you do not need to calculate pixel size. As to the rest it's a fairly simple issue of mathemtaics rather than programming. You have two loops, one for rows and one for columns. Within the columns loop you do whatever is necessary to position a square on the board, and given the row and column number you can make decisions as to what should be in each square. Rather than trying to work out the C# coding for this you should do some drawings on paper and think about what information you need at each point.

Thank a lot for the reply! I think I have some grasp of it now, but am having some trouble visualising it. I asked a friend for some advice, according to him,

Quote:
the trick to getting it to work is dividing the square numbers in even rows by 6 and the remainder is the column number of that square number, then for the odd row's you just get the remainder of them but depending on what the remainder is, will determine what column they are, like if(squarenum % 6 == 0) then column is 5
and to find the row numbers you just use division by 6 aswell, like each 6 times you go through the loop go up(or down) a row

I think I understand what I have to do, just not really sure how. For example, how can I find the "even rows".

Funny thing is, I love puzzles like this, but this just has me completly stumped!

Again, thanks a lot for the replies guys.

EDIT:

OKAY! so I decided just to do it the long way, but I really want to know if there is a way to do it in less code. Here is my solution, any/all input would be very much appreciated!

C#

/// <summary>
       /// For a given square number, tells you the corresponding row and column numbers.
       /// Pre:  none.
       /// Post: returns the row and column numbers, via "out" parameters.
       /// </summary>
       /// <param name="squareNumber">The input square number.</param>
       /// <param name="rowNumber">The output row number.</param>
       /// <param name="columnNumber">The output column number.</param>
       private static void MapSquareNumToScreenRowAndColumn(int squareNumber, out int rowNumber, out int columnNumber){

           // ######################## Add more code to this method and replace the next two lines by something more sensible.  ###############################
           rowNumber = 0; // Use 0 to make the compiler happy for now.
           columnNumber = 0; // Use 0 to make the compiler happy for now.

           columnNumber = squareNumber % 6;
           rowNumber = squareNumber/6;

           //switch statement for assigning column values to odd rows
           int remainder = squareNumber%6;
           switch (remainder){
               case 0:
                   columnNumber = 5;
                   break;
               case 1:
                   columnNumber = 4;
                   break;
               case 2:
                   columnNumber = 3;
                   break;
               case 3:
                   columnNumber = 2;
                   break;
               case 4:
                   columnNumber = 1;
                   break;
               case 5:
                   columnNumber = 0;
                   break;

           }

           if (squareNumber >=0 && squareNumber <= 5){
               rowNumber = 6;
               columnNumber = squareNumber%6;

           }

           if (squareNumber >=6 && squareNumber <= 11){
               rowNumber = 5;
           }

           if (squareNumber >=12 && squareNumber <= 17){
               rowNumber = 4;
               columnNumber = squareNumber%6;
           }
           if (squareNumber >=18 && squareNumber <= 23){
               rowNumber = 3;

           }
           if (squareNumber >= 24 && squareNumber <= 29){
               rowNumber = 2;
               columnNumber = squareNumber%6;

           }
           if (squareNumber >= 30 && squareNumber <= 35){
               rowNumber = 1;

           }
           if (squareNumber >= 36 && squareNumber <= 41){
               rowNumber = 0;
               columnNumber = squareNumber % 6;
           }


       }//end MapSquareNumToScreenRowAndColumn

modified 18-Oct-14 0:55am.

Why are you making it so complicated? For example why code that switch statement above, rather than the statements:

C#

int remainder = squareNumber % 6;
columnNumber = 5 - remainder;

and something similar for the rows.

However I still think you would be better with the two loops I suggested, which always give you both row and column. If you want to add the left-to-right, right-to-left feature then you just need to enhance it slightly with something like this:

C#

for (int row = MAXROWS; row >= 0 ; --row) // going from 6 down to 0
{
    for (int column = 0; column < MAXCOLUMNS; ++column) // 0 to 5
    {
        if (row & 1)
            column = 5 - column; // right to left if odd row
    }
}

I think I know what you are saying, but I am unsure whether that would works since my calculation for columnumer and rownumber has to takeplace in the second method mentioned in the OP. Since the first the method is calling the second method in a loop, wouldn't this cause the calculation in the second method to not work?

I've have been thinking, maybe I can use LINQ for this? Though I am very unsure how to use LINQ maybe its worth thinking about?

The calculation I have given you is all you need. Inside the second loop you have the values for row and column so you can access the exact location required.

Member 11160467 wrote:
how can I find the "even rows"

By studying the code in my reply here Smile | :)

« There is only one difference between a madman and me. The madman thinks he is sane. I know I am mad. » Salvador Dali

Richard MacCutchan wrote:
// You can calculate screen position by multiplying each index by the
// appropriate number of pixels in the side of a square

In this case the OP is using a TableLayoutPanel where the position of his graphic-whatever is specified by row,column number, and their size is a factor in the layout design of the TLP ... although of course he could be setting row-height, and column-width in code for all we can tell from the post, I'd guess he's creating the layout of the TLP at design-time.

The interesting part is the alternate switching of cell order from left-to-right to right-to-left per row.

« There is only one difference between a madman and me. The madman thinks he is sane. I know I am mad. » Salvador Dali