Re: how to delete mail from mail server using C# - C# Discussion Boards

1-Sep-09 19:25

i programmatically send and read mail and save the mail into my database.
but i want delete a mail which will delete from my database and also from my mail server.how can i delete mail from mail server???

please help me.
advance thanks

Md Shafikul Islam

ThatsAlok1-Sep-09 19:50

ThatsAlok

1-Sep-09 19:50

Which mail server are you talking about??

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khosnur1-Sep-09 20:38

1-Sep-09 20:38

linux server using pop3 and smtp

Tamer Oz1-Sep-09 19:55

1-Sep-09 19:55

If you are talking about Exchange server there is a web service of Exchange 2007 sp2,
if you are talking about pop3 mail server you can try connecting to server by simulating telnet from your application and delete mail.

khosnur1-Sep-09 20:43

1-Sep-09 20:43

many many thanks
i am using pop3 mail server i programmatically connect the server and the mail ID but it do not delete the mail would u see the code and answer me the fault.

public MAIL_ERROR Connect(string host, int port, string username, string password)
{
try
{
_conn.Host = host;
_conn.Port = port;
_conn.Connect();
System.Threading.Thread.Sleep(_TimeOut);
return Login(username, password);
}
catch (Exception e)
{
System.Diagnostics.Trace.Write(e.ToString());
return MAIL_ERROR.ERROR_CANTCONNECT;
}
}

public MAIL_ERROR DeleteMessage(int id)
{
if (this._state != POP3_STATE.POP3_LOGGEDIN)
{
throw new MailException("You are not logged into the mail server");
}
string ret = "";
SendCommandSynchronous(string.Format("DELE {0}\r\n", id), out ret, false);

if (ret.Contains("OK") == false)
{
throw new MailException(ret);
}
else
{
return MAIL_ERROR.ERROR_NONE;
}
}

Tamer Oz1-Sep-09 20:58

1-Sep-09 20:58

Everything seems ok.

Could you pls send the SendCommandSynchronous method

khosnur1-Sep-09 21:21

1-Sep-09 21:21

thanks again for reply..
here is the method:

private MAIL_ERROR SendCommandSynchronous(string cmd, out string response, bool bMultiLineResponse)
{

// Remove any data that was left over on the buffer
string deadData = _conn.Receive();
_conn.Send(cmd);

response = WaitForResponse(bMultiLineResponse);
return MAIL_ERROR.ERROR_NONE;
}

private string WaitForResponse(bool bMultiLine)
{
int timeout = 5000; // wait 10 seconds for response

int waitedTime = 0;
string strRet = "";
while (waitedTime < timeout)
{
System.Threading.Thread.Sleep(_TimeOut);
strRet += _conn.Receive();

if (CommandComplete(strRet, bMultiLine) == true)
{
return strRet;
}
waitedTime += _TimeOut;

}
return strRet;
}

Tamer Oz1-Sep-09 21:44

1-Sep-09 21:44

Could you try

private string GetResponse()
{

    //read till finding new line, return.

    string strPrev = null;

    string strCurrent = null;

    string strMessage = null;

    NetworkStream ns = default(NetworkStream);

    ns = client.GetStream;//Previously instanced and connected TcpClient

    while (true)
    {

        byte[] buffer = new byte[1];
        //read by 1 byte 1 byte

        ns.Read(buffer, 0, buffer.Length);

        strCurrent = System.Text.Encoding.GetEncoding(1254).GetString(buffer);

        strMessage = strMessage + strCurrent;

        if (strCurrent == @"\r" && strPrev == @"\n")
        {

            break; // TODO: might not be correct. Was : Exit While
        }


        strPrev = strCurrent;
    }


    return strMessage;
}

private void SendMessage(string str)
{

    str = str + "\r\n";
    //Controlchars.CrLf '10+13

    byte[] buffer = System.Text.Encoding.GetEncoding(1254).GetBytes(str);

    NetworkStream ns = client.GetStream;


    ns.Write(buffer, 0, buffer.Length);
}

khosnur1-Sep-09 20:46

1-Sep-09 20:46

here id i send mail receive number when read the mail i got that number.
i pass that receive number for mail delete

OnPaint Event

Reza Shojaee1-Sep-09 19:03

Reza Shojaee

1-Sep-09 19:03

Hi everybody

I have a panel in my form, I used backgraound image for my panel.
In the Panel OnPaint event body, I draw ellipse with various position and dimension on each times.
So I use a timer, On the OnTimer event I Refresh panel for clearing previous ellipse and draw new ellipse with new parameters.

when form refreshed a bit jumping occurred in my background image, since I use mentioned operation every second, these jumping annoy the user.
I want to know how can disappear these jumping, Maybe for clearing prior ellipse use another method instead refresh or invalidate.

Best Regards,
Reza Shojaee

Re: OnPaint Event

Christian Graus1-Sep-09 20:56

Christian Graus

1-Sep-09 20:56

You can turn on double buffering.

this.SetStyle(
ControlStyles.AllPaintingInWmPaint |
ControlStyles.UserPaint |
ControlStyles.DoubleBuffer,true);

Christian Graus

Driven to the arms of OSX by Vista.

Read my blog to find out how I've worked around bugs in Microsoft tools and frameworks.

connections

ihe1-Sep-09 18:56

ihe

1-Sep-09 18:56

Please I would like your help in the following questions,(Please supply code example.)
:

1. How can I make a program’s able to link with its database independent of location?

There is a program I am trying to create. It works fine only if the database is placed in a particular location. I would like the program to be such that a user can install the program in any location and my program can look for and locate the database.

In a multi-tier network application, let us assume the following conditions exist:

• The front –end is in VB.NET/ C# .NET. (I am at home with any of them so you can write the code in any of these languages) The back-end is an oracle database.

2. How can I link the two? The front-end is not in the same computer as the database.

3. How can I make my apps able to read/ write real-time data?
Thank you .

ihe

Christian Graus1-Sep-09 20:59

Christian Graus

1-Sep-09 20:59

ihe wrote:
1. How can I make a program’s able to link with its database independent of location?

Depends on the DB type. If it's a file, like an MDB, you need to let the user browse to it, and build a connection string to that file.

ihe wrote:
2. How can I link the two? The front-end is not in the same computer as the database.

Well, it depends. Are they on the same network ? Then you just need a network path. If not, then it will need to be on the internet, which means it will be visible on the same URL to everyone. So, you need to let the user specify a network path, and build a connection string from it, I expect.

ihe wrote:
3. How can I make my apps able to read/ write real-time data?

I'm not sure what you mean. If your DB is over a network, that will slow down the DB. Your best bet is to cache data and have another thread periodically storing it to the DB. Minimising the number of DB calls will make it faster.

Christian Graus

Driven to the arms of OSX by Vista.

Read my blog to find out how I've worked around bugs in Microsoft tools and frameworks.

Ashfield1-Sep-09 21:00

Ashfield

1-Sep-09 21:00

ihe wrote:
1. How can I make a program’s able to link with its database independent of location?

You need to specify the server location in your connection string, so, in practical terms searching for your database is not feasible - you would need to connect to every instance of every server and see if your database was on that server. There would eb all sorts of security issues, and if the database existed on multiple servers which would you use.

ihe wrote:
2. How can I link the two? The front-end is not in the same computer as the database.

See answer 1, using the conneciton string. A good source of info is www.connectionstrings.com[^]

ihe wrote:
3. How can I make my apps able to read/ write real-time data?

Not sure what you mean. You write to and read from a database in real time.

Bob
Ashfield Consultants Ltd
Proud to be a 2009 Code Project MVP

ihe4-Sep-09 13:21

ihe

4-Sep-09 13:21

Thanks. www.connectionstrings.com is very good.

Real time:
Let us assume that there is an on-going continuous process. I want to be able to monitor it, without being present. I want to design a program that would write the start time / end time to a database without a user clicking a button. The program would monitor and detect when the process is ongoing.
If there is any variable associated with this process, the program would write these values in the database as well.

The program should write the values as the process is occurring. It should not involve any human interference as this would cause a loss in time (lag time) for the human to click the control (for saving).

The program should monitor, detect and write the event as fast as the process occurs. A type of survellience.

Please explain how I would go ahead in this program

ihe

Group Selection in List View

Ashfield5-Sep-09 2:28

Ashfield

5-Sep-09 2:28

ihe wrote:

Please explain how I would go ahead in this program

Its your coursework, not ours Have a try and come bac with specific problems, but if you have no idea where to start ask your tutor.

Bob
Ashfield Consultants Ltd
Proud to be a 2009 Code Project MVP

vhassan1-Sep-09 18:46

vhassan

1-Sep-09 18:46

I have listview that contain multiple groups.
each group has multiple items.

when I select single item it gets highlighted.
but when I click on group the listview item selection is changed. I get no item selected.

What I should I do to keep the item selected unless user clicks on other item not group.

Please tell.

Convert xml file to word document

Swetha Srinivasan1-Sep-09 18:46

Swetha Srinivasan

1-Sep-09 18:46

Hi
Is there any way in which i can convert a xml file to a word document..can u please demonstrate with a small example??

Re: Convert xml file to word document

Tamer Oz1-Sep-09 19:59

Re: Convert xml file to word document

1-Sep-09 19:59

You can use word interop to write xml file's content to word document. If you google 'how to create document with word interop' you'll find tons of examples.

Swetha Srinivasan1-Sep-09 20:15

Swetha Srinivasan

1-Sep-09 20:15

Now i am already using the interop object.I just want to know if this can be done in any other way.

Re: Convert xml file to word document

Tamer Oz1-Sep-09 20:27