Re: ReferenceEquals and checking for null - C# Discussion Boards

How to Create a Trial Version in C# dot net [modified]

Sasi Kumar. V10-Oct-07 1:07

10-Oct-07 1:07

Hi Friends I need a details and program for create a Trial version to an application in C# dot net 2005. Help me dear's..........

I got a code for this in vb dot net but i want it in c# help me ......

http://www.codeproject.com/useritems/registration.asp

regards

Sasi Kumar.V

-- modified at 7:12 Wednesday 10th October, 2007

Re: How to Create a Trial Version in C# dot net

Christian Graus10-Oct-07 1:21

Christian Graus

10-Oct-07 1:21

Sasi Kumar. V wrote:
I got a code for this in vb dot net but i want it in c# help me ......

It should be easy enough to convert. There's tons of ways of doing this anyhow, all pretty straightforward.

Christian Graus - Microsoft MVP - C++

"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 )

Re: How to Create a Trial Version in C# dot net

Sasi Kumar. V10-Oct-07 1:36

Sasi Kumar. V

10-Oct-07 1:36

send me one of the way

Re: How to Create a Trial Version in C# dot net

lmoelleb10-Oct-07 2:11

lmoelleb

10-Oct-07 2:11

Compile it, then open the DLL in .NET reflector and disassemble as C#. I have not said this is the best way, but it certainly is a way. Wink | ;)

Re: How to Create a Trial Version in C# dot net

Pete O'Hanlon10-Oct-07 3:17

Pete O'Hanlon

10-Oct-07 3:17

Why do you need to do this? It's .NET and presumably it's should be CLS Compliant which means that it should be accessible from your assembly.

Deja View - the feeling that you've seen this post before.

ReferenceEquals and checking for null

Rob Philpott10-Oct-07 0:59

Rob Philpott

10-Oct-07 0:59

Where I'm working at the moment, I'm seeing a lot of this sort of thing:

if (ReferenceEquals(curve, null))
{
    // do something
}

whereas I would personally just use:

if (curve == null)
{
    // do something
}

Now I know that equality is more complicated than it sounds, so my question is, is there any merit in using the first approach over the second?

Regards,
Rob Philpott.

Re: ReferenceEquals and checking for null

CPallini10-Oct-07 1:57

CPallini

10-Oct-07 1:57

Well, IMHO ReferenceEquals method, when used to compare a reference with null, it's merely redundant.
Smile | :)

If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler.
-- Alfonso the Wise, 13th Century King of Castile.

Re: ReferenceEquals and checking for null

Michael Potter10-Oct-07 3:24

Michael Potter

10-Oct-07 3:24

That would depend on where it is used.

For example: When you override the == operator, you may want to use ReferenceEquals() so that you don't end up with an infinite loop or other undesired effect.

Re: ReferenceEquals and checking for null

Anthony Mushrow10-Oct-07 3:46

Anthony Mushrow

10-Oct-07 3:46

override operators... you can do that?

My current favourite word is: Waffle

Cheese is still good though.

Re: ReferenceEquals and checking for null

J4amieC10-Oct-07 4:06

J4amieC

10-Oct-07 4:06

public static operator bool == (MyObject lhs, MyObject rhs)<br />
{<br />
// your equality code here<br />
}

---

How to get answers to your questions[^]

Re: ReferenceEquals and checking for null

Michael Potter10-Oct-07 4:09

Michael Potter

10-Oct-07 4:09

Yes you can: Reference[^]

Activate an existing browser session with a .Net executable

Joachim Maes10-Oct-07 0:43

Joachim Maes

10-Oct-07 0:43

Hello,

I'm looking for a way to activate an existing browser session by means of a C# .Net executable.
I have found some code where I would be able to look for all active programs, and eventually even kill them. I did not find a way to activate a process, however.

private void button1_Click(object sender, System.EventArgs e)
{
System.Diagnostics.Process[] myProcesses;
myProcesses = System.Diagnostics.Process.GetProcesses();

foreach (System.Diagnostics.Process instance in myProcesses)
{
MessageBox.Show (instance.MainWindowTitle);
instance.Kill();
}
}

I need this to avoid the user to have logged in again.
I want to activate his open internet session, and eventually even refresh his session with a new url.
E.g.
http://localhost/sid=abc123?nameId=10
should be replaced by
http://localhost/sid=abc123?nameId=20 , in the same session, and triggered by an executable.

Is this possible ?

Help would be very much appreciated.

Re: Activate an existing browser session with a .Net executable

Christian Graus10-Oct-07 0:57

Christian Graus

10-Oct-07 0:57

I doubt it's possible.

Christian Graus - Microsoft MVP - C++

"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 )

Sending Mail using MAPI

M. J. Jaya Chitra10-Oct-07 0:32

M. J. Jaya Chitra

10-Oct-07 0:32

Hai all,

I have to send mails through MAPI.

I have gone through the articles given in code project.

I have created a sample application. But when the send() method is called it is prompting a dialog box intimating an application is trying to send mail automatically... ... from the Microsoft outlook application. While clicking on the "Yes" option it is sending the mail.

But the above task should be automated in my module and it has to be done in a windows service.

Can any one give me a solution to perform the above without displaying the message box.

Thanks a lot in advance.

Best Regards,
M. J. Jaya Chitra

Re: Sending Mail using MAPI

TJoe10-Oct-07 9:37

TJoe

10-Oct-07 9:37

Is there a reason you have to use MAPI over SMTP?

In this[^] example they specify the user cannot edit the message (which I believe means it is not shown to them).

Take care,
Tom

-----------------------------------------------
Check out my blog at http://tjoe.wordpress.com

Re: Sending Mail using MAPI

M. J. Jaya Chitra10-Oct-07 18:07

M. J. Jaya Chitra

10-Oct-07 18:07

Yes, because i have to have the items in the "Send Items" folder of the outlook.

Best Regards,
M. J. Jaya Chitra

Re: Sending Mail using MAPI

TJoe11-Oct-07 2:21

TJoe

11-Oct-07 2:21

That makes sense. Can you post the code that you are using to call MAPISendMail?

Take care,
Tom

-----------------------------------------------
Check out my blog at http://tjoe.wordpress.com

Re: Sending Mail using MAPI

M. J. Jaya Chitra11-Oct-07 2:29

M. J. Jaya Chitra

11-Oct-07 2:29

The code is:

using System;<br />
using System.Collections.Generic;<br />
using System.ComponentModel;<br />
using System.Data;<br />
using System.Drawing;<br />
using System.Text;<br />
using System.Windows.Forms;<br />
using Microsoft.Office.Core;<br />
using Outlook = Microsoft.Office.Interop.Outlook;<br />
<br />
namespace ExchangeMAPI<br />
{<br />
    public partial class MailUsingMAPI : Form<br />
    {<br />
        public MailUsingMAPI()<br />
        {<br />
            InitializeComponent();<br />
        }<br />
<br />
        private void btnSendMail_Click(object sender, EventArgs e)<br />
        {<br />
            object missing = System.Reflection.Missing.Value;<br />
<br />
            // get the Outlook Application Object<br />
            Outlook.Application outlookApplication = new Outlook.Application();<br />
            //outlookApplication.Session.Logon(<br />
            // get the namespace object<br />
            Outlook.NameSpace nameSpace = outlookApplication.GetNamespace("MAPI");<br />
<br />
            nameSpace.Logoff();<br />
            // Logon to Session, here we use an already opened Outlook<br />
            nameSpace.Logon(missing, missing, true, false);<br />
<br />
            Outlook.MailItem mail = (Outlook.MailItem)outlookApplication.CreateItem(Microsoft.Office.Interop.Outlook.OlItemType.olMailItem);<br />
            mail.To = txtReceiverAddress.Text;<br />
            //mail.SenderEmailAddress = txtSenderAddress.Text;<br />
            mail.Subject = txtSubject.Text;<br />
            mail.BodyFormat = Outlook.OlBodyFormat.olFormatHTML;<br />
            //mail.Body ="<html><body><p>"+ txtMessage.Text+@"</p></body></html>";<br />
            mail.HTMLBody = "<html><body><p>" + txtMessage.Text + @"</p></body></html>";<br />
            mail.Send();<br />
        }<br />
    }<br />
}

Best Regards,
M. J. Jaya Chitra

Re: Sending Mail using MAPI

TJoe11-Oct-07 3:01

TJoe

11-Oct-07 3:01

You are using the Outlook interop, not MAPI (even though you are getting the MAPI namespace). If you look at the documentation[^] for the MailItem.Send method, you will see that it says the dialog will be shown. This is a security measure, so I doubt you would be able to programmatically suppress it.

You should be able to configure the Outlook UI to suppress it though (depending on your version). I'm running Outlook 2007, and I can disable it under the "Tools->Trust Center..." menu item. In the dialog select "Programmatic Access", and select the "Never warn me..." option. This is not recommended by Microsoft or me.

Take care,
Tom

-----------------------------------------------
Check out my blog at http://tjoe.wordpress.com

Re: Sending Mail using MAPI

M. J. Jaya Chitra11-Oct-07 17:52

M. J. Jaya Chitra

11-Oct-07 17:52

I am using Microsoft Outlook 2003, so where can i find this option.

Best Regards,
M. J. Jaya Chitra

Re: Sending Mail using MAPI

TJoe12-Oct-07 1:57

TJoe

12-Oct-07 1:57

Sorry, I don't have Outlook 2003, so you'll have to find it yourself. This[^] may help though.

Take care,
Tom

-----------------------------------------------
Check out my blog at http://tjoe.wordpress.com

the static keyword

Dextter10-Oct-07 0:28

Dextter

10-Oct-07 0:28

Hi,
I'm new to programming in C#, actually learning under someone. I recently saw the following line of code in the code-behind of an ASP.NET Web application page :

//all the other autogenerated codes

static DataSet dSet; // explain this line please.

What does it mean to make a DataSet static?

Thanks for your time. Smile | :)

Obinna from Nigeria.

Re: the static keyword

Christian Graus10-Oct-07 0:31

Christian Graus

10-Oct-07 0:31

ObinnaAj wrote:
What does it mean to make a DataSet static?

Hi, Obinna. In an ASP.NET project, this makes no difference, because of how ASP.NET works. In general, it means that if you have a class like this:

class Widget
{
public static int widgetCount = 0;
}

then the value of widgetCount is the same across all instances of the program. If the Widget constructor looked like this:

public Widget()
{
++widgetCount;
}

Then, every widget would have the same value, and it woild not be 1, it would be equal to the number of widgets that had been created. In fact, in C#, if you do this:

Widget w = new Widget();
int n = w.widgetCount;

The compiler would not allow it. You need to do this:

int n = Widget.widgetCount;

Christian Graus - Microsoft MVP - C++

"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 )

Re: the static keyword

N a v a n e e t h10-Oct-07 0:51

N a v a n e e t h

10-Oct-07 0:51

Christian Graus wrote:
public Widget()
{
++widgetCount;
}

Could you tell any sample scenario where we need to use this kind of increment ? i don't find any use of incrementing the static value.

My Website | Ask smart questions

Re: the static keyword

Christian Graus10-Oct-07 0:57

Christian Graus

10-Oct-07 0:57

Well, a count of objects seemed like a decent real world example. Another may be a database connection string. Basically, if the value is always the same, or if it is a value you want to be able to make all instances aware of, static does that for you.

Once you know how it works, if you ever need it, you'll know.

Christian Graus - Microsoft MVP - C++

"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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