compare string to button text

[Demosthenes]

I am using visual c++ 2003 i believe.

I created a new win32 application, and put 1 button on the form and
changed it's text to "Start".
and this code does not work:
private: System::Void button1_Click(System::Object * sender,
System::EventArgs * e)
{
if (button1->Text == "Start")
{
button1->Text = "Stop";
}
else
{
button1->Text == "Start";
}
}
the project compiles ok, but when the code executes, the if statement
always goes to the else clause. The text on the button is "Start"
though. I think I am not understanding some fundamental concepts
with
pointers/objects....

[Cholo Lennon]

Demosthenes wrote:

I am using visual c++ 2003 i believe.

I created a new win32 application, and put 1 button on the form and
changed it's text to "Start".
and this code does not work:
private: System::Void button1_Click(System::Object * sender,
System::EventArgs * e)
{
if (button1->Text == "Start")
{
button1->Text = "Stop";
}
else
{
button1->Text == "Start";
}
}
the project compiles ok, but when the code executes, the if statement
always goes to the else clause. The text on the button is "Start"
though. I think I am not understanding some fundamental concepts
with
pointers/objects....

When comparing add S prefix to your literals:

if (button1->Text == S"Start")
...
else
...

Take a look to:

http://www.codeproject.com/KB/mcpp/managed_types.aspx
http://punkouter.wordpress.com/2007/...y-reference-ob
jects-equality/
Regards
--
Cholo Lennon
Bs.As.
ARG

[Ben Voigt [C++ MVP]]

Cholo Lennon wrote:

Demosthenes wrote:

>I am using visual c++ 2003 i believe.

I created a new win32 application, and put 1 button on the form and
changed it's text to "Start".
and this code does not work:
private: System::Void button1_Click(System::Object * sender,
System::EventArgs * e)
{
if (button1->Text == "Start")
{
button1->Text = "Stop";
}
else
{
button1->Text == "Start";
}
}
the project compiles ok, but when the code executes, the if statement
always goes to the else clause. The text on the button is "Start"
though. I think I am not understanding some fundamental concepts
with
pointers/objects....

When comparing add S prefix to your literals:

if (button1->Text == S"Start")

or even better,

if (button1->Text->Equals(S"Start"))

This makes it clear it is not pointer comparison.

...
else
...

Take a look to:

http://www.codeproject.com/KB/mcpp/managed_types.aspx
http://punkouter.wordpress.com/2007/...y-reference-ob
jects-equality/
Regards

[Demosthenes]

On Mar 27, 5:14*pm, "Ben Voigt [C++ MVP]" <[e-mail]:

Cholo Lennon wrote:

Demostheneswrote:

I am using visual c++ 2003 i believe.

I created a new win32 application, and put 1 button on the form and
changed it's text to "Start".

and this code does not work:

private: System::Void button1_Click(System::Object * *sender,
System::EventArgs * *e)
* * {
* * * * * *if (button1->Text == "Start")
* * * * {
* * * * * button1->Text = "Stop";
* * * * * * }
* * * else
* * * * {
* * * * * button1->Text == "Start";
* * * * *}
* * }

the project compiles ok, but when the code executes, the if statement
always goes to the else clause. *The text on the button is "Start"
though. *I think I am not understanding some fundamental concepts
with
pointers/objects....

When comparing add S prefix to your literals:

if (button1->Text == S"Start")

or even better,

if (button1->Text->Equals(S"Start"))

This makes it clear it is not pointer comparison.

* * * *...
else
* * * *...

Take a look to:

http://www.codeproject.com/KB/mcpp/managed_types.aspx
http://punkouter.wordpress.com/2007/...ing-equality-r...
jects-equality/

Regards- Hide quoted text -

- Show quoted text -- Hide quoted text -

- Show quoted text -

thanks guys, now i run into a strange thing here, the first time i
press the button, the buttons text = start, and gets set to stop.
Then from stop to start, then it never works again. here is my code

if (button1->Text == S"Start")
{
button1->Text = "Stop";
}
else
{
button1->Text = "Start";
}

[Demosthenes]

On Mar 28, 9:37*am, Demosthenes <[e-mail]:

On Mar 27, 5:14*pm, "Ben Voigt [C++ MVP]" <[e-mail]:

Cholo Lennon wrote:

>Demostheneswrote:
>I am using visual c++ 2003 i believe.

>I created a new win32 application, and put 1 button on the form and
>changed it's text to "Start".

>and this code does not work:

>private: System::Void button1_Click(System::Object * *sender,
>System::EventArgs * *e)
>* * {
>* * * * * *if (button1->Text == "Start")
>* * * * {
>* * * * * button1->Text = "Stop";
>* * * * * * }
>* * * else
>* * * * {
>* * * * * button1->Text == "Start";
>* * * * *}
>* * }

>the project compiles ok, but when the code executes, the if statement
>always goes to the else clause. *The text on the button is "Start"
>though. *I think I am not understanding some fundamental concepts
>with
>pointers/objects....

When comparing add S prefix to your literals:

if (button1->Text == S"Start")

or even better,

if (button1->Text->Equals(S"Start"))

This makes it clear it is not pointer comparison.

* * * *...
else
* * * *...

Take a look to:

>http://www.codeproject.com/KB/mcpp/managed_types.aspx
>http://punkouter.wordpress.com/2007/...ing-equality-r....
jects-equality/

Regards- Hide quoted text -

- Show quoted text -- Hide quoted text -

- Show quoted text -

thanks guys, now i run into a strange thing here, the first time i
press the button, the buttons text = start, and gets set to stop.
Then from stop to start, then it never works again. *here is my code

* * *if (button1->Text == S"Start")
* * * * {
* * * * * button1->Text = "Stop";
* * * * }
* * * else
* * * * {
* * * * * button1->Text = "Start";
* * * * }- Hide quoted text -

- Show quoted text -

but this seems to work fine:

if (button1->Text->Equals(S"Start"))
{
button1->Text = "Stop";
timer1->Enabled = true;
timer1->Start;
}
else
{
button1->Text = "Start";
timer1->Stop;
timer1->Enabled = false;
}